merge with stable

mercurial/cext/manifest.c

@@ -1,940 +1,952 b''
 /*
  * manifest.c - manifest type that does on-demand parsing.
  *
  * Copyright 2015, Google Inc.
  *
  * This software may be used and distributed according to the terms of
  * the GNU General Public License, incorporated herein by reference.
  */
 #include <Python.h>
 
 #include <assert.h>
 #include <stdlib.h>
 #include <string.h>
 
 #include "charencode.h"
 #include "util.h"
 
 #define DEFAULT_LINES 100000
 
 typedef struct {
 	char *start;
 	Py_ssize_t len; /* length of line including terminal newline */
 	char hash_suffix;
 	bool from_malloc;
 	bool deleted;
 } line;
 
 typedef struct {
 	PyObject_HEAD
 	PyObject *pydata;
 	line *lines;
 	int numlines; /* number of line entries */
 	int livelines; /* number of non-deleted lines */
 	int maxlines; /* allocated number of lines */
 	bool dirty;
 } lazymanifest;
 
 #define MANIFEST_OOM -1
 #define MANIFEST_NOT_SORTED -2
 #define MANIFEST_MALFORMED -3
 
 /* get the length of the path for a line */
 static size_t pathlen(line *l)
 {
 	return strlen(l->start);
 }
 
 /* get the node value of a single line */
 static PyObject *nodeof(line *l)
 {
 	char *s = l->start;
 	ssize_t llen = pathlen(l);
 	PyObject *hash = unhexlify(s + llen + 1, 40);
 	if (!hash) {
 		return NULL;
 	}
 	if (l->hash_suffix != '\0') {
 		char newhash[21];
 		memcpy(newhash, PyBytes_AsString(hash), 20);
 		Py_DECREF(hash);
 		newhash[20] = l->hash_suffix;
 		hash = PyBytes_FromStringAndSize(newhash, 21);
 	}
 	return hash;
 }
 
 /* get the node hash and flags of a line as a tuple */
 static PyObject *hashflags(line *l)
 {
 	char *s = l->start;
 	size_t plen = pathlen(l);
 	PyObject *hash = nodeof(l);
 
 	/* 40 for hash, 1 for null byte, 1 for newline */
 	size_t hplen = plen + 42;
 	Py_ssize_t flen = l->len - hplen;
 	PyObject *flags;
 	PyObject *tup;
 
 	if (!hash)
 		return NULL;
 	flags = PyBytes_FromStringAndSize(s + hplen - 1, flen);
 	if (!flags) {
 		Py_DECREF(hash);
 		return NULL;
 	}
 	tup = PyTuple_Pack(2, hash, flags);
 	Py_DECREF(flags);
 	Py_DECREF(hash);
 	return tup;
 }
 
 /* if we're about to run out of space in the line index, add more */
 static bool realloc_if_full(lazymanifest *self)
 {
 	if (self->numlines == self->maxlines) {
 		self->maxlines *= 2;
 		self->lines = realloc(self->lines, self->maxlines * sizeof(line));
 	}
 	return !!self->lines;
 }
 
 /*
  * Find the line boundaries in the manifest that 'data' points to and store
  * information about each line in 'self'.
  */
 static int find_lines(lazymanifest *self, char *data, Py_ssize_t len)
 {
 	char *prev = NULL;
 	while (len > 0) {
 		line *l;
 		char *next = memchr(data, '\n', len);
 		if (!next) {
 			return MANIFEST_MALFORMED;
 		}
 		next++; /* advance past newline */
 		if (!realloc_if_full(self)) {
 			return MANIFEST_OOM; /* no memory */
 		}
 		if (prev && strcmp(prev, data) > -1) {
 			/* This data isn't sorted, so we have to abort. */
 			return MANIFEST_NOT_SORTED;
 		}
 		l = self->lines + ((self->numlines)++);
 		l->start = data;
 		l->len = next - data;
 		l->hash_suffix = '\0';
 		l->from_malloc = false;
 		l->deleted = false;
 		len = len - l->len;
 		prev = data;
 		data = next;
 	}
 	self->livelines = self->numlines;
 	return 0;
 }
 
+static void lazymanifest_init_early(lazymanifest *self)
+{
+	self->pydata = NULL;
+	self->lines = NULL;
+	self->numlines = 0;
+	self->maxlines = 0;
+}
+
 static int lazymanifest_init(lazymanifest *self, PyObject *args)
 {
 	char *data;
 	Py_ssize_t len;
 	int err, ret;
 	PyObject *pydata;
+
+	lazymanifest_init_early(self);
 	if (!PyArg_ParseTuple(args, "S", &pydata)) {
 		return -1;
 	}
 	err = PyBytes_AsStringAndSize(pydata, &data, &len);
 
 	self->dirty = false;
 	if (err == -1)
 		return -1;
 	self->pydata = pydata;
 	Py_INCREF(self->pydata);
 	Py_BEGIN_ALLOW_THREADS
 	self->lines = malloc(DEFAULT_LINES * sizeof(line));
 	self->maxlines = DEFAULT_LINES;
 	self->numlines = 0;
 	if (!self->lines)
 		ret = MANIFEST_OOM;
 	else
 		ret = find_lines(self, data, len);
 	Py_END_ALLOW_THREADS
 	switch (ret) {
 	case 0:
 		break;
 	case MANIFEST_OOM:
 		PyErr_NoMemory();
 		break;
 	case MANIFEST_NOT_SORTED:
 		PyErr_Format(PyExc_ValueError,
 			     "Manifest lines not in sorted order.");
 		break;
 	case MANIFEST_MALFORMED:
 		PyErr_Format(PyExc_ValueError,
 			     "Manifest did not end in a newline.");
 		break;
 	default:
 		PyErr_Format(PyExc_ValueError,
 			     "Unknown problem parsing manifest.");
 	}
 	return ret == 0 ? 0 : -1;
 }
 
 static void lazymanifest_dealloc(lazymanifest *self)
 {
 	/* free any extra lines we had to allocate */
 	int i;
 	for (i = 0; self->lines && (i < self->numlines); i++) {
 		if (self->lines[i].from_malloc) {
 			free(self->lines[i].start);
 		}
 	}
 	free(self->lines);
 	self->lines = NULL;
 	if (self->pydata) {
 		Py_DECREF(self->pydata);
 		self->pydata = NULL;
 	}
 	PyObject_Del(self);
 }
 
 /* iteration support */
 
 typedef struct {
 	PyObject_HEAD lazymanifest *m;
 	Py_ssize_t pos;
 } lmIter;
 
 static void lmiter_dealloc(PyObject *o)
 {
 	lmIter *self = (lmIter *)o;
 	Py_DECREF(self->m);
 	PyObject_Del(self);
 }
 
 static line *lmiter_nextline(lmIter *self)
 {
 	do {
 		self->pos++;
 		if (self->pos >= self->m->numlines) {
 			return NULL;
 		}
 		/* skip over deleted manifest entries */
 	} while (self->m->lines[self->pos].deleted);
 	return self->m->lines + self->pos;
 }
 
 static PyObject *lmiter_iterentriesnext(PyObject *o)
 {
 	size_t pl;
 	line *l;
 	Py_ssize_t consumed;
 	PyObject *ret = NULL, *path = NULL, *hash = NULL, *flags = NULL;
 	l = lmiter_nextline((lmIter *)o);
 	if (!l) {
 		goto done;
 	}
 	pl = pathlen(l);
 	path = PyBytes_FromStringAndSize(l->start, pl);
 	hash = nodeof(l);
 	consumed = pl + 41;
 	flags = PyBytes_FromStringAndSize(l->start + consumed,
 					   l->len - consumed - 1);
 	if (!path || !hash || !flags) {
 		goto done;
 	}
 	ret = PyTuple_Pack(3, path, hash, flags);
 done:
 	Py_XDECREF(path);
 	Py_XDECREF(hash);
 	Py_XDECREF(flags);
 	return ret;
 }
 
 #ifdef IS_PY3K
 #define LAZYMANIFESTENTRIESITERATOR_TPFLAGS Py_TPFLAGS_DEFAULT
 #else
 #define LAZYMANIFESTENTRIESITERATOR_TPFLAGS Py_TPFLAGS_DEFAULT \
 	| Py_TPFLAGS_HAVE_ITER
 #endif
 
 static PyTypeObject lazymanifestEntriesIterator = {
 	PyVarObject_HEAD_INIT(NULL, 0) /* header */
 	"parsers.lazymanifest.entriesiterator", /*tp_name */
 	sizeof(lmIter),                  /*tp_basicsize */
 	0,                               /*tp_itemsize */
 	lmiter_dealloc,                  /*tp_dealloc */
 	0,                               /*tp_print */
 	0,                               /*tp_getattr */
 	0,                               /*tp_setattr */
 	0,                               /*tp_compare */
 	0,                               /*tp_repr */
 	0,                               /*tp_as_number */
 	0,                               /*tp_as_sequence */
 	0,                               /*tp_as_mapping */
 	0,                               /*tp_hash */
 	0,                               /*tp_call */
 	0,                               /*tp_str */
 	0,                               /*tp_getattro */
 	0,                               /*tp_setattro */
 	0,                               /*tp_as_buffer */
 	LAZYMANIFESTENTRIESITERATOR_TPFLAGS, /* tp_flags */
 	"Iterator for 3-tuples in a lazymanifest.",  /* tp_doc */
 	0,                               /* tp_traverse */
 	0,                               /* tp_clear */
 	0,                               /* tp_richcompare */
 	0,                               /* tp_weaklistoffset */
 	PyObject_SelfIter,               /* tp_iter: __iter__() method */
 	lmiter_iterentriesnext,          /* tp_iternext: next() method */
 };
 
 static PyObject *lmiter_iterkeysnext(PyObject *o)
 {
 	size_t pl;
 	line *l = lmiter_nextline((lmIter *)o);
 	if (!l) {
 		return NULL;
 	}
 	pl = pathlen(l);
 	return PyBytes_FromStringAndSize(l->start, pl);
 }
 
 #ifdef IS_PY3K
 #define LAZYMANIFESTKEYSITERATOR_TPFLAGS Py_TPFLAGS_DEFAULT
 #else
 #define LAZYMANIFESTKEYSITERATOR_TPFLAGS Py_TPFLAGS_DEFAULT \
 	| Py_TPFLAGS_HAVE_ITER
 #endif
 
 static PyTypeObject lazymanifestKeysIterator = {
 	PyVarObject_HEAD_INIT(NULL, 0) /* header */
 	"parsers.lazymanifest.keysiterator", /*tp_name */
 	sizeof(lmIter),                  /*tp_basicsize */
 	0,                               /*tp_itemsize */
 	lmiter_dealloc,                  /*tp_dealloc */
 	0,                               /*tp_print */
 	0,                               /*tp_getattr */
 	0,                               /*tp_setattr */
 	0,                               /*tp_compare */
 	0,                               /*tp_repr */
 	0,                               /*tp_as_number */
 	0,                               /*tp_as_sequence */
 	0,                               /*tp_as_mapping */
 	0,                               /*tp_hash */
 	0,                               /*tp_call */
 	0,                               /*tp_str */
 	0,                               /*tp_getattro */
 	0,                               /*tp_setattro */
 	0,                               /*tp_as_buffer */
 	LAZYMANIFESTKEYSITERATOR_TPFLAGS, /* tp_flags */
 	"Keys iterator for a lazymanifest.",  /* tp_doc */
 	0,                               /* tp_traverse */
 	0,                               /* tp_clear */
 	0,                               /* tp_richcompare */
 	0,                               /* tp_weaklistoffset */
 	PyObject_SelfIter,               /* tp_iter: __iter__() method */
 	lmiter_iterkeysnext,             /* tp_iternext: next() method */
 };
 
 static lazymanifest *lazymanifest_copy(lazymanifest *self);
 
 static PyObject *lazymanifest_getentriesiter(lazymanifest *self)
 {
 	lmIter *i = NULL;
 	lazymanifest *t = lazymanifest_copy(self);
 	if (!t) {
 		PyErr_NoMemory();
 		return NULL;
 	}
 	i = PyObject_New(lmIter, &lazymanifestEntriesIterator);
 	if (i) {
 		i->m = t;
 		i->pos = -1;
 	} else {
 		Py_DECREF(t);
 		PyErr_NoMemory();
 	}
 	return (PyObject *)i;
 }
 
 static PyObject *lazymanifest_getkeysiter(lazymanifest *self)
 {
 	lmIter *i = NULL;
 	lazymanifest *t = lazymanifest_copy(self);
 	if (!t) {
 		PyErr_NoMemory();
 		return NULL;
 	}
 	i = PyObject_New(lmIter, &lazymanifestKeysIterator);
 	if (i) {
 		i->m = t;
 		i->pos = -1;
 	} else {
 		Py_DECREF(t);
 		PyErr_NoMemory();
 	}
 	return (PyObject *)i;
 }
 
 /* __getitem__ and __setitem__ support */
 
 static Py_ssize_t lazymanifest_size(lazymanifest *self)
 {
 	return self->livelines;
 }
 
 static int linecmp(const void *left, const void *right)
 {
 	return strcmp(((const line *)left)->start,
 		      ((const line *)right)->start);
 }
 
 static PyObject *lazymanifest_getitem(lazymanifest *self, PyObject *key)
 {
 	line needle;
 	line *hit;
 	if (!PyBytes_Check(key)) {
 		PyErr_Format(PyExc_TypeError,
 			     "getitem: manifest keys must be a string.");
 		return NULL;
 	}
 	needle.start = PyBytes_AsString(key);
 	hit = bsearch(&needle, self->lines, self->numlines, sizeof(line),
 		      &linecmp);
 	if (!hit || hit->deleted) {
 		PyErr_Format(PyExc_KeyError, "No such manifest entry.");
 		return NULL;
 	}
 	return hashflags(hit);
 }
 
 static int lazymanifest_delitem(lazymanifest *self, PyObject *key)
 {
 	line needle;
 	line *hit;
 	if (!PyBytes_Check(key)) {
 		PyErr_Format(PyExc_TypeError,
 			     "delitem: manifest keys must be a string.");
 		return -1;
 	}
 	needle.start = PyBytes_AsString(key);
 	hit = bsearch(&needle, self->lines, self->numlines, sizeof(line),
 		      &linecmp);
 	if (!hit || hit->deleted) {
 		PyErr_Format(PyExc_KeyError,
 			     "Tried to delete nonexistent manifest entry.");
 		return -1;
 	}
 	self->dirty = true;
 	hit->deleted = true;
 	self->livelines--;
 	return 0;
 }
 
 /* Do a binary search for the insertion point for new, creating the
  * new entry if needed. */
 static int internalsetitem(lazymanifest *self, line *new)
 {
 	int start = 0, end = self->numlines;
 	while (start < end) {
 		int pos = start + (end - start) / 2;
 		int c = linecmp(new, self->lines + pos);
 		if (c < 0)
 			end = pos;
 		else if (c > 0)
 			start = pos + 1;
 		else {
 			if (self->lines[pos].deleted)
 				self->livelines++;
 			if (self->lines[pos].from_malloc)
 				free(self->lines[pos].start);
 			start = pos;
 			goto finish;
 		}
 	}
 	/* being here means we need to do an insert */
 	if (!realloc_if_full(self)) {
 		PyErr_NoMemory();
 		return -1;
 	}
 	memmove(self->lines + start + 1, self->lines + start,
 		(self->numlines - start) * sizeof(line));
 	self->numlines++;
 	self->livelines++;
 finish:
 	self->lines[start] = *new;
 	self->dirty = true;
 	return 0;
 }
 
 static int lazymanifest_setitem(
 	lazymanifest *self, PyObject *key, PyObject *value)
 {
 	char *path;
 	Py_ssize_t plen;
 	PyObject *pyhash;
 	Py_ssize_t hlen;
 	char *hash;
 	PyObject *pyflags;
 	char *flags;
 	Py_ssize_t flen;
 	size_t dlen;
 	char *dest;
 	int i;
 	line new;
 	if (!PyBytes_Check(key)) {
 		PyErr_Format(PyExc_TypeError,
 			     "setitem: manifest keys must be a string.");
 		return -1;
 	}
 	if (!value) {
 		return lazymanifest_delitem(self, key);
 	}
 	if (!PyTuple_Check(value) || PyTuple_Size(value) != 2) {
 		PyErr_Format(PyExc_TypeError,
 			     "Manifest values must be a tuple of (node, flags).");
 		return -1;
 	}
 	if (PyBytes_AsStringAndSize(key, &path, &plen) == -1) {
 		return -1;
 	}
 
 	pyhash = PyTuple_GetItem(value, 0);
 	if (!PyBytes_Check(pyhash)) {
 		PyErr_Format(PyExc_TypeError,
 			     "node must be a 20-byte string");
 		return -1;
 	}
 	hlen = PyBytes_Size(pyhash);
 	/* Some parts of the codebase try and set 21 or 22
 	 * byte "hash" values in order to perturb things for
 	 * status. We have to preserve at least the 21st
 	 * byte. Sigh. If there's a 22nd byte, we drop it on
 	 * the floor, which works fine.
 	 */
 	if (hlen != 20 && hlen != 21 && hlen != 22) {
 		PyErr_Format(PyExc_TypeError,
 			     "node must be a 20-byte string");
 		return -1;
 	}
 	hash = PyBytes_AsString(pyhash);
 
 	pyflags = PyTuple_GetItem(value, 1);
 	if (!PyBytes_Check(pyflags) || PyBytes_Size(pyflags) > 1) {
 		PyErr_Format(PyExc_TypeError,
 			     "flags must a 0 or 1 byte string");
 		return -1;
 	}
 	if (PyBytes_AsStringAndSize(pyflags, &flags, &flen) == -1) {
 		return -1;
 	}
 	/* one null byte and one newline */
 	dlen = plen + 41 + flen + 1;
 	dest = malloc(dlen);
 	if (!dest) {
 		PyErr_NoMemory();
 		return -1;
 	}
 	memcpy(dest, path, plen + 1);
 	for (i = 0; i < 20; i++) {
 		/* Cast to unsigned, so it will not get sign-extended when promoted
 		 * to int (as is done when passing to a variadic function)
 		 */
 		sprintf(dest + plen + 1 + (i * 2), "%02x", (unsigned char)hash[i]);
 	}
 	memcpy(dest + plen + 41, flags, flen);
 	dest[plen + 41 + flen] = '\n';
 	new.start = dest;
 	new.len = dlen;
 	new.hash_suffix = '\0';
 	if (hlen > 20) {
 		new.hash_suffix = hash[20];
 	}
 	new.from_malloc = true;     /* is `start` a pointer we allocated? */
 	new.deleted = false;        /* is this entry deleted? */
 	if (internalsetitem(self, &new)) {
 		return -1;
 	}
 	return 0;
 }
 
 static PyMappingMethods lazymanifest_mapping_methods = {
 	(lenfunc)lazymanifest_size,             /* mp_length */
 	(binaryfunc)lazymanifest_getitem,       /* mp_subscript */
 	(objobjargproc)lazymanifest_setitem,    /* mp_ass_subscript */
 };
 
 /* sequence methods (important or __contains__ builds an iterator) */
 
 static int lazymanifest_contains(lazymanifest *self, PyObject *key)
 {
 	line needle;
 	line *hit;
 	if (!PyBytes_Check(key)) {
 		/* Our keys are always strings, so if the contains
 		 * check is for a non-string, just return false. */
 		return 0;
 	}
 	needle.start = PyBytes_AsString(key);
 	hit = bsearch(&needle, self->lines, self->numlines, sizeof(line),
 		      &linecmp);
 	if (!hit || hit->deleted) {
 		return 0;
 	}
 	return 1;
 }
 
 static PySequenceMethods lazymanifest_seq_meths = {
 	(lenfunc)lazymanifest_size, /* sq_length */
 	0, /* sq_concat */
 	0, /* sq_repeat */
 	0, /* sq_item */
 	0, /* sq_slice */
 	0, /* sq_ass_item */
 	0, /* sq_ass_slice */
 	(objobjproc)lazymanifest_contains, /* sq_contains */
 	0, /* sq_inplace_concat */
 	0, /* sq_inplace_repeat */
 };
 
 
 /* Other methods (copy, diff, etc) */
 static PyTypeObject lazymanifestType;
 
 /* If the manifest has changes, build the new manifest text and reindex it. */
 static int compact(lazymanifest *self)
 {
 	int i;
 	ssize_t need = 0;
 	char *data;
 	line *src, *dst;
 	PyObject *pydata;
 	if (!self->dirty)
 		return 0;
 	for (i = 0; i < self->numlines; i++) {
 		if (!self->lines[i].deleted) {
 			need += self->lines[i].len;
 		}
 	}
 	pydata = PyBytes_FromStringAndSize(NULL, need);
 	if (!pydata)
 		return -1;
 	data = PyBytes_AsString(pydata);
 	if (!data) {
 		return -1;
 	}
 	src = self->lines;
 	dst = self->lines;
 	for (i = 0; i < self->numlines; i++, src++) {
 		char *tofree = NULL;
 		if (src->from_malloc) {
 			tofree = src->start;
 		}
 		if (!src->deleted) {
 			memcpy(data, src->start, src->len);
 			*dst = *src;
 			dst->start = data;
 			dst->from_malloc = false;
 			data += dst->len;
 			dst++;
 		}
 		free(tofree);
 	}
 	Py_DECREF(self->pydata);
 	self->pydata = pydata;
 	self->numlines = self->livelines;
 	self->dirty = false;
 	return 0;
 }
 
 static PyObject *lazymanifest_text(lazymanifest *self)
 {
 	if (compact(self) != 0) {
 		PyErr_NoMemory();
 		return NULL;
 	}
 	Py_INCREF(self->pydata);
 	return self->pydata;
 }
 
 static lazymanifest *lazymanifest_copy(lazymanifest *self)
 {
 	lazymanifest *copy = NULL;
 	if (compact(self) != 0) {
 		goto nomem;
 	}
 	copy = PyObject_New(lazymanifest, &lazymanifestType);
 	if (!copy) {
 		goto nomem;
 	}
+	lazymanifest_init_early(copy);
 	copy->numlines = self->numlines;
 	copy->livelines = self->livelines;
 	copy->dirty = false;
 	copy->lines = malloc(self->maxlines *sizeof(line));
 	if (!copy->lines) {
 		goto nomem;
 	}
 	memcpy(copy->lines, self->lines, self->numlines * sizeof(line));
 	copy->maxlines = self->maxlines;
 	copy->pydata = self->pydata;
 	Py_INCREF(copy->pydata);
 	return copy;
 nomem:
 	PyErr_NoMemory();
 	Py_XDECREF(copy);
 	return NULL;
 }
 
 static lazymanifest *lazymanifest_filtercopy(
 	lazymanifest *self, PyObject *matchfn)
 {
 	lazymanifest *copy = NULL;
 	int i;
 	if (!PyCallable_Check(matchfn)) {
 		PyErr_SetString(PyExc_TypeError, "matchfn must be callable");
 		return NULL;
 	}
 	/* compact ourselves first to avoid double-frees later when we
 	 * compact tmp so that it doesn't have random pointers to our
 	 * underlying from_malloc-data (self->pydata is safe) */
 	if (compact(self) != 0) {
 		goto nomem;
 	}
 	copy = PyObject_New(lazymanifest, &lazymanifestType);
 	if (!copy) {
 		goto nomem;
 	}
+	lazymanifest_init_early(copy);
 	copy->dirty = true;
 	copy->lines = malloc(self->maxlines * sizeof(line));
 	if (!copy->lines) {
 		goto nomem;
 	}
 	copy->maxlines = self->maxlines;
 	copy->numlines = 0;
 	copy->pydata = self->pydata;
 	Py_INCREF(self->pydata);
 	for (i = 0; i < self->numlines; i++) {
 		PyObject *arglist = NULL, *result = NULL;
 		arglist = Py_BuildValue(PY23("(s)", "(y)"),
 					self->lines[i].start);
 		if (!arglist) {
 			return NULL;
 		}
 		result = PyObject_CallObject(matchfn, arglist);
 		Py_DECREF(arglist);
 		/* if the callback raised an exception, just let it
 		 * through and give up */
 		if (!result) {
 			free(copy->lines);
 			Py_DECREF(self->pydata);
 			return NULL;
 		}
 		if (PyObject_IsTrue(result)) {
 			assert(!(self->lines[i].from_malloc));
 			copy->lines[copy->numlines++] = self->lines[i];
 		}
 		Py_DECREF(result);
 	}
 	copy->livelines = copy->numlines;
 	return copy;
 nomem:
 	PyErr_NoMemory();
 	Py_XDECREF(copy);
 	return NULL;
 }
 
 static PyObject *lazymanifest_diff(lazymanifest *self, PyObject *args)
 {
 	lazymanifest *other;
 	PyObject *pyclean = NULL;
 	bool listclean;
 	PyObject *emptyTup = NULL, *ret = NULL;
 	PyObject *es;
 	int sneedle = 0, oneedle = 0;
 	if (!PyArg_ParseTuple(args, "O!|O", &lazymanifestType, &other, &pyclean)) {
 		return NULL;
 	}
 	listclean = (!pyclean) ? false : PyObject_IsTrue(pyclean);
 	es = PyBytes_FromString("");
 	if (!es) {
 		goto nomem;
 	}
 	emptyTup = PyTuple_Pack(2, Py_None, es);
 	Py_DECREF(es);
 	if (!emptyTup) {
 		goto nomem;
 	}
 	ret = PyDict_New();
 	if (!ret) {
 		goto nomem;
 	}
 	while (sneedle != self->numlines || oneedle != other->numlines) {
 		line *left = self->lines + sneedle;
 		line *right = other->lines + oneedle;
 		int result;
 		PyObject *key;
 		PyObject *outer;
 		/* If we're looking at a deleted entry and it's not
 		 * the end of the manifest, just skip it. */
 		if (sneedle < self->numlines && left->deleted) {
 			sneedle++;
 			continue;
 		}
 		if (oneedle < other->numlines && right->deleted) {
 			oneedle++;
 			continue;
 		}
 		/* if we're at the end of either manifest, then we
 		 * know the remaining items are adds so we can skip
 		 * the strcmp. */
 		if (sneedle == self->numlines) {
 			result = 1;
 		} else if (oneedle == other->numlines) {
 			result = -1;
 		} else {
 			result = linecmp(left, right);
 		}
 		key = result <= 0 ?
 			PyBytes_FromString(left->start) :
 			PyBytes_FromString(right->start);
 		if (!key)
 			goto nomem;
 		if (result < 0) {
 			PyObject *l = hashflags(left);
 			if (!l) {
 				goto nomem;
 			}
 			outer = PyTuple_Pack(2, l, emptyTup);
 			Py_DECREF(l);
 			if (!outer) {
 				goto nomem;
 			}
 			PyDict_SetItem(ret, key, outer);
 			Py_DECREF(outer);
 			sneedle++;
 		} else if (result > 0) {
 			PyObject *r = hashflags(right);
 			if (!r) {
 				goto nomem;
 			}
 			outer = PyTuple_Pack(2, emptyTup, r);
 			Py_DECREF(r);
 			if (!outer) {
 				goto nomem;
 			}
 			PyDict_SetItem(ret, key, outer);
 			Py_DECREF(outer);
 			oneedle++;
 		} else {
 			/* file exists in both manifests */
 			if (left->len != right->len
 			    || memcmp(left->start, right->start, left->len)
 			    || left->hash_suffix != right->hash_suffix) {
 				PyObject *l = hashflags(left);
 				PyObject *r;
 				if (!l) {
 					goto nomem;
 				}
 				r = hashflags(right);
 				if (!r) {
 					Py_DECREF(l);
 					goto nomem;
 				}
 				outer = PyTuple_Pack(2, l, r);
 				Py_DECREF(l);
 				Py_DECREF(r);
 				if (!outer) {
 					goto nomem;
 				}
 				PyDict_SetItem(ret, key, outer);
 				Py_DECREF(outer);
 			} else if (listclean) {
 				PyDict_SetItem(ret, key, Py_None);
 			}
 			sneedle++;
 			oneedle++;
 		}
 		Py_DECREF(key);
 	}
 	Py_DECREF(emptyTup);
 	return ret;
 nomem:
 	PyErr_NoMemory();
 	Py_XDECREF(ret);
 	Py_XDECREF(emptyTup);
 	return NULL;
 }
 
 static PyMethodDef lazymanifest_methods[] = {
 	{"iterkeys", (PyCFunction)lazymanifest_getkeysiter, METH_NOARGS,
 	 "Iterate over file names in this lazymanifest."},
 	{"iterentries", (PyCFunction)lazymanifest_getentriesiter, METH_NOARGS,
 	 "Iterate over (path, nodeid, flags) tuples in this lazymanifest."},
 	{"copy", (PyCFunction)lazymanifest_copy, METH_NOARGS,
 	 "Make a copy of this lazymanifest."},
 	{"filtercopy", (PyCFunction)lazymanifest_filtercopy, METH_O,
 	 "Make a copy of this manifest filtered by matchfn."},
 	{"diff", (PyCFunction)lazymanifest_diff, METH_VARARGS,
 	 "Compare this lazymanifest to another one."},
 	{"text", (PyCFunction)lazymanifest_text, METH_NOARGS,
 	 "Encode this manifest to text."},
 	{NULL},
 };
 
 #ifdef IS_PY3K
 #define LAZYMANIFEST_TPFLAGS Py_TPFLAGS_DEFAULT
 #else
 #define LAZYMANIFEST_TPFLAGS Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_SEQUENCE_IN
 #endif
 
 static PyTypeObject lazymanifestType = {
 	PyVarObject_HEAD_INIT(NULL, 0) /* header */
 	"parsers.lazymanifest",                           /* tp_name */
 	sizeof(lazymanifest),                             /* tp_basicsize */
 	0,                                                /* tp_itemsize */
 	(destructor)lazymanifest_dealloc,                 /* tp_dealloc */
 	0,                                                /* tp_print */
 	0,                                                /* tp_getattr */
 	0,                                                /* tp_setattr */
 	0,                                                /* tp_compare */
 	0,                                                /* tp_repr */
 	0,                                                /* tp_as_number */
 	&lazymanifest_seq_meths,                          /* tp_as_sequence */
 	&lazymanifest_mapping_methods,                    /* tp_as_mapping */
 	0,                                                /* tp_hash */
 	0,                                                /* tp_call */
 	0,                                                /* tp_str */
 	0,                                                /* tp_getattro */
 	0,                                                /* tp_setattro */
 	0,                                                /* tp_as_buffer */
 	LAZYMANIFEST_TPFLAGS,                             /* tp_flags */
 	"TODO(augie)",                                    /* tp_doc */
 	0,                                                /* tp_traverse */
 	0,                                                /* tp_clear */
 	0,                                                /* tp_richcompare */
 	0,                                             /* tp_weaklistoffset */
 	(getiterfunc)lazymanifest_getkeysiter,                /* tp_iter */
 	0,                                                /* tp_iternext */
 	lazymanifest_methods,                             /* tp_methods */
 	0,                                                /* tp_members */
 	0,                                                /* tp_getset */
 	0,                                                /* tp_base */
 	0,                                                /* tp_dict */
 	0,                                                /* tp_descr_get */
 	0,                                                /* tp_descr_set */
 	0,                                                /* tp_dictoffset */
 	(initproc)lazymanifest_init,                      /* tp_init */
 	0,                                                /* tp_alloc */
 };
 
 void manifest_module_init(PyObject * mod)
 {
 	lazymanifestType.tp_new = PyType_GenericNew;
 	if (PyType_Ready(&lazymanifestType) < 0)
 		return;
 	Py_INCREF(&lazymanifestType);
 
 	PyModule_AddObject(mod, "lazymanifest",
 			   (PyObject *)&lazymanifestType);
 }

mercurial/crecord.py

@@ -1,1784 +1,1784 b''
 # stuff related specifically to patch manipulation / parsing
 #
 # Copyright 2008 Mark Edgington <[e-mail]>
 #
 # This software may be used and distributed according to the terms of the
 # GNU General Public License version 2 or any later version.
 #
 # This code is based on the Mark Edgington's crecord extension.
 # (Itself based on Bryan O'Sullivan's record extension.)
 
 from __future__ import absolute_import
 
 import locale
 import os
 import re
 import signal
 
 from .i18n import _
 from . import (
     encoding,
     error,
     patch as patchmod,
     scmutil,
     util,
 )
 from .utils import (
     stringutil,
 )
 stringio = util.stringio
 
 # This is required for ncurses to display non-ASCII characters in default user
 # locale encoding correctly.  --immerrr
 locale.setlocale(locale.LC_ALL, u'')
 
 # patch comments based on the git one
 diffhelptext = _("""# To remove '-' lines, make them ' ' lines (context).
 # To remove '+' lines, delete them.
 # Lines starting with # will be removed from the patch.
 """)
 
 hunkhelptext = _("""#
 # If the patch applies cleanly, the edited hunk will immediately be
 # added to the record list. If it does not apply cleanly, a rejects file
 # will be generated. You can use that when you try again. If all lines
 # of the hunk are removed, then the edit is aborted and the hunk is left
 # unchanged.
 """)
 
 patchhelptext = _("""#
 # If the patch applies cleanly, the edited patch will immediately
 # be finalised. If it does not apply cleanly, rejects files will be
 # generated. You can use those when you try again.
 """)
 
 try:
     import curses
     curses.error
 except ImportError:
     # I have no idea if wcurses works with crecord...
     try:
         import wcurses as curses
         curses.error
     except ImportError:
         # wcurses is not shipped on Windows by default, or python is not
         # compiled with curses
         curses = False
 
 class fallbackerror(error.Abort):
     """Error that indicates the client should try to fallback to text mode."""
     # Inherits from error.Abort so that existing behavior is preserved if the
     # calling code does not know how to fallback.
 
 def checkcurses(ui):
     """Return True if the user wants to use curses
 
     This method returns True if curses is found (and that python is built with
     it) and that the user has the correct flag for the ui.
     """
     return curses and ui.interface("chunkselector") == "curses"
 
 class patchnode(object):
     """abstract class for patch graph nodes
     (i.e. patchroot, header, hunk, hunkline)
     """
 
     def firstchild(self):
         raise NotImplementedError("method must be implemented by subclass")
 
     def lastchild(self):
         raise NotImplementedError("method must be implemented by subclass")
 
     def allchildren(self):
         "Return a list of all of the direct children of this node"
         raise NotImplementedError("method must be implemented by subclass")
 
     def nextsibling(self):
         """
         Return the closest next item of the same type where there are no items
         of different types between the current item and this closest item.
         If no such item exists, return None.
         """
         raise NotImplementedError("method must be implemented by subclass")
 
     def prevsibling(self):
         """
         Return the closest previous item of the same type where there are no
         items of different types between the current item and this closest item.
         If no such item exists, return None.
         """
         raise NotImplementedError("method must be implemented by subclass")
 
     def parentitem(self):
         raise NotImplementedError("method must be implemented by subclass")
 
     def nextitem(self, skipfolded=True):
         """
         Try to return the next item closest to this item, regardless of item's
         type (header, hunk, or hunkline).
 
         If skipfolded == True, and the current item is folded, then the child
         items that are hidden due to folding will be skipped when determining
         the next item.
 
         If it is not possible to get the next item, return None.
         """
         try:
             itemfolded = self.folded
         except AttributeError:
             itemfolded = False
         if skipfolded and itemfolded:
             nextitem = self.nextsibling()
             if nextitem is None:
                 try:
                     nextitem = self.parentitem().nextsibling()
                 except AttributeError:
                     nextitem = None
             return nextitem
         else:
             # try child
             item = self.firstchild()
             if item is not None:
                 return item
 
             # else try next sibling
             item = self.nextsibling()
             if item is not None:
                 return item
 
             try:
                 # else try parent's next sibling
                 item = self.parentitem().nextsibling()
                 if item is not None:
                     return item
 
                 # else return grandparent's next sibling (or None)
                 return self.parentitem().parentitem().nextsibling()
 
             except AttributeError: # parent and/or grandparent was None
                 return None
 
     def previtem(self):
         """
         Try to return the previous item closest to this item, regardless of
         item's type (header, hunk, or hunkline).
 
         If it is not possible to get the previous item, return None.
         """
         # try previous sibling's last child's last child,
         # else try previous sibling's last child, else try previous sibling
         prevsibling = self.prevsibling()
         if prevsibling is not None:
             prevsiblinglastchild = prevsibling.lastchild()
             if ((prevsiblinglastchild is not None) and
                 not prevsibling.folded):
                 prevsiblinglclc = prevsiblinglastchild.lastchild()
                 if ((prevsiblinglclc is not None) and
                     not prevsiblinglastchild.folded):
                     return prevsiblinglclc
                 else:
                     return prevsiblinglastchild
             else:
                 return prevsibling
 
         # try parent (or None)
         return self.parentitem()
 
 class patch(patchnode, list): # todo: rename patchroot
     """
     list of header objects representing the patch.
     """
     def __init__(self, headerlist):
         self.extend(headerlist)
         # add parent patch object reference to each header
         for header in self:
             header.patch = self
 
 class uiheader(patchnode):
     """patch header
 
     xxx shouldn't we move this to mercurial/patch.py ?
     """
 
     def __init__(self, header):
         self.nonuiheader = header
         # flag to indicate whether to apply this chunk
         self.applied = True
         # flag which only affects the status display indicating if a node's
         # children are partially applied (i.e. some applied, some not).
         self.partial = False
 
         # flag to indicate whether to display as folded/unfolded to user
         self.folded = True
 
         # list of all headers in patch
         self.patch = None
 
         # flag is False if this header was ever unfolded from initial state
         self.neverunfolded = True
         self.hunks = [uihunk(h, self) for h in self.hunks]
 
     def prettystr(self):
         x = stringio()
         self.pretty(x)
         return x.getvalue()
 
     def nextsibling(self):
         numheadersinpatch = len(self.patch)
         indexofthisheader = self.patch.index(self)
 
         if indexofthisheader < numheadersinpatch - 1:
             nextheader = self.patch[indexofthisheader + 1]
             return nextheader
         else:
             return None
 
     def prevsibling(self):
         indexofthisheader = self.patch.index(self)
         if indexofthisheader > 0:
             previousheader = self.patch[indexofthisheader - 1]
             return previousheader
         else:
             return None
 
     def parentitem(self):
         """
         there is no 'real' parent item of a header that can be selected,
         so return None.
         """
         return None
 
     def firstchild(self):
         "return the first child of this item, if one exists.  otherwise None."
         if len(self.hunks) > 0:
             return self.hunks[0]
         else:
             return None
 
     def lastchild(self):
         "return the last child of this item, if one exists.  otherwise None."
         if len(self.hunks) > 0:
             return self.hunks[-1]
         else:
             return None
 
     def allchildren(self):
         "return a list of all of the direct children of this node"
         return self.hunks
 
     def __getattr__(self, name):
         return getattr(self.nonuiheader, name)
 
 class uihunkline(patchnode):
     "represents a changed line in a hunk"
     def __init__(self, linetext, hunk):
         self.linetext = linetext
         self.applied = True
         # the parent hunk to which this line belongs
         self.hunk = hunk
         # folding lines currently is not used/needed, but this flag is needed
         # in the previtem method.
         self.folded = False
 
     def prettystr(self):
         return self.linetext
 
     def nextsibling(self):
         numlinesinhunk = len(self.hunk.changedlines)
         indexofthisline = self.hunk.changedlines.index(self)
 
         if (indexofthisline < numlinesinhunk - 1):
             nextline = self.hunk.changedlines[indexofthisline + 1]
             return nextline
         else:
             return None
 
     def prevsibling(self):
         indexofthisline = self.hunk.changedlines.index(self)
         if indexofthisline > 0:
             previousline = self.hunk.changedlines[indexofthisline - 1]
             return previousline
         else:
             return None
 
     def parentitem(self):
         "return the parent to the current item"
         return self.hunk
 
     def firstchild(self):
         "return the first child of this item, if one exists.  otherwise None."
         # hunk-lines don't have children
         return None
 
     def lastchild(self):
         "return the last child of this item, if one exists.  otherwise None."
         # hunk-lines don't have children
         return None
 
 class uihunk(patchnode):
     """ui patch hunk, wraps a hunk and keep track of ui behavior """
     maxcontext = 3
 
     def __init__(self, hunk, header):
         self._hunk = hunk
         self.changedlines = [uihunkline(line, self) for line in hunk.hunk]
         self.header = header
         # used at end for detecting how many removed lines were un-applied
         self.originalremoved = self.removed
 
         # flag to indicate whether to display as folded/unfolded to user
         self.folded = True
         # flag to indicate whether to apply this chunk
         self.applied = True
         # flag which only affects the status display indicating if a node's
         # children are partially applied (i.e. some applied, some not).
         self.partial = False
 
     def nextsibling(self):
         numhunksinheader = len(self.header.hunks)
         indexofthishunk = self.header.hunks.index(self)
 
         if (indexofthishunk < numhunksinheader - 1):
             nexthunk = self.header.hunks[indexofthishunk + 1]
             return nexthunk
         else:
             return None
 
     def prevsibling(self):
         indexofthishunk = self.header.hunks.index(self)
         if indexofthishunk > 0:
             previoushunk = self.header.hunks[indexofthishunk - 1]
             return previoushunk
         else:
             return None
 
     def parentitem(self):
         "return the parent to the current item"
         return self.header
 
     def firstchild(self):
         "return the first child of this item, if one exists.  otherwise None."
         if len(self.changedlines) > 0:
             return self.changedlines[0]
         else:
             return None
 
     def lastchild(self):
         "return the last child of this item, if one exists.  otherwise None."
         if len(self.changedlines) > 0:
             return self.changedlines[-1]
         else:
             return None
 
     def allchildren(self):
         "return a list of all of the direct children of this node"
         return self.changedlines
 
     def countchanges(self):
         """changedlines -> (n+,n-)"""
         add = len([l for l in self.changedlines if l.applied
                    and l.prettystr()[0] == '+'])
         rem = len([l for l in self.changedlines if l.applied
                    and l.prettystr()[0] == '-'])
         return add, rem
 
     def getfromtoline(self):
         # calculate the number of removed lines converted to context lines
         removedconvertedtocontext = self.originalremoved - self.removed
 
         contextlen = (len(self.before) + len(self.after) +
                       removedconvertedtocontext)
         if self.after and self.after[-1] == '\\ No newline at end of file\n':
             contextlen -= 1
         fromlen = contextlen + self.removed
         tolen = contextlen + self.added
 
         # diffutils manual, section "2.2.2.2 detailed description of unified
         # format": "an empty hunk is considered to end at the line that
         # precedes the hunk."
         #
         # so, if either of hunks is empty, decrease its line start. --immerrr
         # but only do this if fromline > 0, to avoid having, e.g fromline=-1.
         fromline, toline = self.fromline, self.toline
         if fromline != 0:
             if fromlen == 0:
                 fromline -= 1
-            if tolen == 0:
+            if tolen == 0 and toline > 0:
                 toline -= 1
 
         fromtoline = '@@ -%d,%d +%d,%d @@%s\n' % (
             fromline, fromlen, toline, tolen,
             self.proc and (' ' + self.proc))
         return fromtoline
 
     def write(self, fp):
         # updated self.added/removed, which are used by getfromtoline()
         self.added, self.removed = self.countchanges()
         fp.write(self.getfromtoline())
 
         hunklinelist = []
         # add the following to the list: (1) all applied lines, and
         # (2) all unapplied removal lines (convert these to context lines)
         for changedline in self.changedlines:
             changedlinestr = changedline.prettystr()
             if changedline.applied:
                 hunklinelist.append(changedlinestr)
             elif changedlinestr[0] == "-":
                 hunklinelist.append(" " + changedlinestr[1:])
 
         fp.write(''.join(self.before + hunklinelist + self.after))
 
     pretty = write
 
     def prettystr(self):
         x = stringio()
         self.pretty(x)
         return x.getvalue()
 
     def reversehunk(self):
         """return a recordhunk which is the reverse of the hunk
 
         Assuming the displayed patch is diff(A, B) result. The returned hunk is
         intended to be applied to B, instead of A.
 
         For example, when A is "0\n1\n2\n6\n" and B is "0\n3\n4\n5\n6\n", and
         the user made the following selection:
 
                  0
             [x] -1           [x]: selected
             [ ] -2           [ ]: not selected
             [x] +3
             [ ] +4
             [x] +5
                  6
 
         This function returns a hunk like:
 
                  0
                 -3
                 -4
                 -5
                 +1
                 +4
                  6
 
         Note "4" was first deleted then added. That's because "4" exists in B
         side and "-4" must exist between "-3" and "-5" to make the patch
         applicable to B.
         """
         dels = []
         adds = []
         for line in self.changedlines:
             text = line.linetext
             if line.applied:
                 if text[0] == '+':
                     dels.append(text[1:])
                 elif text[0] == '-':
                     adds.append(text[1:])
             elif text[0] == '+':
                 dels.append(text[1:])
                 adds.append(text[1:])
         hunk = ['-%s' % l for l in dels] + ['+%s' % l for l in adds]
         h = self._hunk
         return patchmod.recordhunk(h.header, h.toline, h.fromline, h.proc,
                                    h.before, hunk, h.after)
 
     def __getattr__(self, name):
         return getattr(self._hunk, name)
 
     def __repr__(self):
         return '<hunk %r@%d>' % (self.filename(), self.fromline)
 
 def filterpatch(ui, chunks, chunkselector, operation=None):
     """interactively filter patch chunks into applied-only chunks"""
     chunks = list(chunks)
     # convert chunks list into structure suitable for displaying/modifying
     # with curses.  create a list of headers only.
     headers = [c for c in chunks if isinstance(c, patchmod.header)]
 
     # if there are no changed files
     if len(headers) == 0:
         return [], {}
     uiheaders = [uiheader(h) for h in headers]
     # let user choose headers/hunks/lines, and mark their applied flags
     # accordingly
     ret = chunkselector(ui, uiheaders, operation=operation)
     appliedhunklist = []
     for hdr in uiheaders:
         if (hdr.applied and
             (hdr.special() or len([h for h in hdr.hunks if h.applied]) > 0)):
             appliedhunklist.append(hdr)
             fixoffset = 0
             for hnk in hdr.hunks:
                 if hnk.applied:
                     appliedhunklist.append(hnk)
                     # adjust the 'to'-line offset of the hunk to be correct
                     # after de-activating some of the other hunks for this file
                     if fixoffset:
                         #hnk = copy.copy(hnk) # necessary??
                         hnk.toline += fixoffset
                 else:
                     fixoffset += hnk.removed - hnk.added
 
     return (appliedhunklist, ret)
 
 def chunkselector(ui, headerlist, operation=None):
     """
     curses interface to get selection of chunks, and mark the applied flags
     of the chosen chunks.
     """
     ui.write(_('starting interactive selection\n'))
     chunkselector = curseschunkselector(headerlist, ui, operation)
     origsigtstp = sentinel = object()
     if util.safehasattr(signal, 'SIGTSTP'):
         origsigtstp = signal.getsignal(signal.SIGTSTP)
     try:
         curses.wrapper(chunkselector.main)
         if chunkselector.initexc is not None:
             raise chunkselector.initexc
         # ncurses does not restore signal handler for SIGTSTP
     finally:
         if origsigtstp is not sentinel:
             signal.signal(signal.SIGTSTP, origsigtstp)
     return chunkselector.opts
 
 def testdecorator(testfn, f):
     def u(*args, **kwargs):
         return f(testfn, *args, **kwargs)
     return u
 
 def testchunkselector(testfn, ui, headerlist, operation=None):
     """
     test interface to get selection of chunks, and mark the applied flags
     of the chosen chunks.
     """
     chunkselector = curseschunkselector(headerlist, ui, operation)
     if testfn and os.path.exists(testfn):
         testf = open(testfn, 'rb')
         testcommands = [x.rstrip('\n') for x in testf.readlines()]
         testf.close()
         while True:
             if chunkselector.handlekeypressed(testcommands.pop(0), test=True):
                 break
     return chunkselector.opts
 
 _headermessages = { # {operation: text}
     'apply': _('Select hunks to apply'),
     'discard': _('Select hunks to discard'),
     None: _('Select hunks to record'),
 }
 
 class curseschunkselector(object):
     def __init__(self, headerlist, ui, operation=None):
         # put the headers into a patch object
         self.headerlist = patch(headerlist)
 
         self.ui = ui
         self.opts = {}
 
         self.errorstr = None
         # list of all chunks
         self.chunklist = []
         for h in headerlist:
             self.chunklist.append(h)
             self.chunklist.extend(h.hunks)
 
         # dictionary mapping (fgcolor, bgcolor) pairs to the
         # corresponding curses color-pair value.
         self.colorpairs = {}
         # maps custom nicknames of color-pairs to curses color-pair values
         self.colorpairnames = {}
 
         # Honor color setting of ui section. Keep colored setup as
         # long as not explicitly set to a falsy value - especially,
         # when not set at all. This is to stay most compatible with
         # previous (color only) behaviour.
         uicolor = stringutil.parsebool(self.ui.config('ui', 'color'))
         self.usecolor = uicolor is not False
 
         # the currently selected header, hunk, or hunk-line
         self.currentselecteditem = self.headerlist[0]
 
         # updated when printing out patch-display -- the 'lines' here are the
         # line positions *in the pad*, not on the screen.
         self.selecteditemstartline = 0
         self.selecteditemendline = None
 
         # define indentation levels
         self.headerindentnumchars = 0
         self.hunkindentnumchars = 3
         self.hunklineindentnumchars = 6
 
         # the first line of the pad to print to the screen
         self.firstlineofpadtoprint = 0
 
         # keeps track of the number of lines in the pad
         self.numpadlines = None
 
         self.numstatuslines = 1
 
         # keep a running count of the number of lines printed to the pad
         # (used for determining when the selected item begins/ends)
         self.linesprintedtopadsofar = 0
 
         # the first line of the pad which is visible on the screen
         self.firstlineofpadtoprint = 0
 
         # stores optional text for a commit comment provided by the user
         self.commenttext = ""
 
         # if the last 'toggle all' command caused all changes to be applied
         self.waslasttoggleallapplied = True
 
         # affects some ui text
         if operation not in _headermessages:
             raise error.ProgrammingError('unexpected operation: %s' % operation)
         self.operation = operation
 
     def uparrowevent(self):
         """
         try to select the previous item to the current item that has the
         most-indented level.  for example, if a hunk is selected, try to select
         the last hunkline of the hunk prior to the selected hunk.  or, if
         the first hunkline of a hunk is currently selected, then select the
         hunk itself.
         """
         currentitem = self.currentselecteditem
 
         nextitem = currentitem.previtem()
 
         if nextitem is None:
             # if no parent item (i.e. currentitem is the first header), then
             # no change...
             nextitem = currentitem
 
         self.currentselecteditem = nextitem
 
     def uparrowshiftevent(self):
         """
         select (if possible) the previous item on the same level as the
         currently selected item.  otherwise, select (if possible) the
         parent-item of the currently selected item.
         """
         currentitem = self.currentselecteditem
         nextitem = currentitem.prevsibling()
         # if there's no previous sibling, try choosing the parent
         if nextitem is None:
             nextitem = currentitem.parentitem()
         if nextitem is None:
             # if no parent item (i.e. currentitem is the first header), then
             # no change...
             nextitem = currentitem
 
         self.currentselecteditem = nextitem
         self.recenterdisplayedarea()
 
     def downarrowevent(self):
         """
         try to select the next item to the current item that has the
         most-indented level.  for example, if a hunk is selected, select
         the first hunkline of the selected hunk.  or, if the last hunkline of
         a hunk is currently selected, then select the next hunk, if one exists,
         or if not, the next header if one exists.
         """
         #self.startprintline += 1 #debug
         currentitem = self.currentselecteditem
 
         nextitem = currentitem.nextitem()
         # if there's no next item, keep the selection as-is
         if nextitem is None:
             nextitem = currentitem
 
         self.currentselecteditem = nextitem
 
     def downarrowshiftevent(self):
         """
         select (if possible) the next item on the same level as the currently
         selected item.  otherwise, select (if possible) the next item on the
         same level as the parent item of the currently selected item.
         """
         currentitem = self.currentselecteditem
         nextitem = currentitem.nextsibling()
         # if there's no next sibling, try choosing the parent's nextsibling
         if nextitem is None:
             try:
                 nextitem = currentitem.parentitem().nextsibling()
             except AttributeError:
                 # parentitem returned None, so nextsibling() can't be called
                 nextitem = None
         if nextitem is None:
             # if parent has no next sibling, then no change...
             nextitem = currentitem
 
         self.currentselecteditem = nextitem
         self.recenterdisplayedarea()
 
     def rightarrowevent(self):
         """
         select (if possible) the first of this item's child-items.
         """
         currentitem = self.currentselecteditem
         nextitem = currentitem.firstchild()
 
         # turn off folding if we want to show a child-item
         if currentitem.folded:
             self.togglefolded(currentitem)
 
         if nextitem is None:
             # if no next item on parent-level, then no change...
             nextitem = currentitem
 
         self.currentselecteditem = nextitem
 
     def leftarrowevent(self):
         """
         if the current item can be folded (i.e. it is an unfolded header or
         hunk), then fold it.  otherwise try select (if possible) the parent
         of this item.
         """
         currentitem = self.currentselecteditem
 
         # try to fold the item
         if not isinstance(currentitem, uihunkline):
             if not currentitem.folded:
                 self.togglefolded(item=currentitem)
                 return
 
         # if it can't be folded, try to select the parent item
         nextitem = currentitem.parentitem()
 
         if nextitem is None:
             # if no item on parent-level, then no change...
             nextitem = currentitem
             if not nextitem.folded:
                 self.togglefolded(item=nextitem)
 
         self.currentselecteditem = nextitem
 
     def leftarrowshiftevent(self):
         """
         select the header of the current item (or fold current item if the
         current item is already a header).
         """
         currentitem = self.currentselecteditem
 
         if isinstance(currentitem, uiheader):
             if not currentitem.folded:
                 self.togglefolded(item=currentitem)
                 return
 
         # select the parent item recursively until we're at a header
         while True:
             nextitem = currentitem.parentitem()
             if nextitem is None:
                 break
             else:
                 currentitem = nextitem
 
         self.currentselecteditem = currentitem
 
     def updatescroll(self):
         "scroll the screen to fully show the currently-selected"
         selstart = self.selecteditemstartline
         selend = self.selecteditemendline
 
         padstart = self.firstlineofpadtoprint
         padend = padstart + self.yscreensize - self.numstatuslines - 1
         # 'buffered' pad start/end values which scroll with a certain
         # top/bottom context margin
         padstartbuffered = padstart + 3
         padendbuffered = padend - 3
 
         if selend > padendbuffered:
             self.scrolllines(selend - padendbuffered)
         elif selstart < padstartbuffered:
             # negative values scroll in pgup direction
             self.scrolllines(selstart - padstartbuffered)
 
     def scrolllines(self, numlines):
         "scroll the screen up (down) by numlines when numlines >0 (<0)."
         self.firstlineofpadtoprint += numlines
         if self.firstlineofpadtoprint < 0:
             self.firstlineofpadtoprint = 0
         if self.firstlineofpadtoprint > self.numpadlines - 1:
             self.firstlineofpadtoprint = self.numpadlines - 1
 
     def toggleapply(self, item=None):
         """
         toggle the applied flag of the specified item.  if no item is specified,
         toggle the flag of the currently selected item.
         """
         if item is None:
             item = self.currentselecteditem
 
         item.applied = not item.applied
 
         if isinstance(item, uiheader):
             item.partial = False
             if item.applied:
                 # apply all its hunks
                 for hnk in item.hunks:
                     hnk.applied = True
                     # apply all their hunklines
                     for hunkline in hnk.changedlines:
                         hunkline.applied = True
             else:
                 # un-apply all its hunks
                 for hnk in item.hunks:
                     hnk.applied = False
                     hnk.partial = False
                     # un-apply all their hunklines
                     for hunkline in hnk.changedlines:
                         hunkline.applied = False
         elif isinstance(item, uihunk):
             item.partial = False
             # apply all it's hunklines
             for hunkline in item.changedlines:
                 hunkline.applied = item.applied
 
             siblingappliedstatus = [hnk.applied for hnk in item.header.hunks]
             allsiblingsapplied = not (False in siblingappliedstatus)
             nosiblingsapplied = not (True in siblingappliedstatus)
 
             siblingspartialstatus = [hnk.partial for hnk in item.header.hunks]
             somesiblingspartial = (True in siblingspartialstatus)
 
             #cases where applied or partial should be removed from header
 
             # if no 'sibling' hunks are applied (including this hunk)
             if nosiblingsapplied:
                 if not item.header.special():
                     item.header.applied = False
                     item.header.partial = False
             else: # some/all parent siblings are applied
                 item.header.applied = True
                 item.header.partial = (somesiblingspartial or
                                         not allsiblingsapplied)
 
         elif isinstance(item, uihunkline):
             siblingappliedstatus = [ln.applied for ln in item.hunk.changedlines]
             allsiblingsapplied = not (False in siblingappliedstatus)
             nosiblingsapplied = not (True in siblingappliedstatus)
 
             # if no 'sibling' lines are applied
             if nosiblingsapplied:
                 item.hunk.applied = False
                 item.hunk.partial = False
             elif allsiblingsapplied:
                 item.hunk.applied = True
                 item.hunk.partial = False
             else: # some siblings applied
                 item.hunk.applied = True
                 item.hunk.partial = True
 
             parentsiblingsapplied = [hnk.applied for hnk
                                      in item.hunk.header.hunks]
             noparentsiblingsapplied = not (True in parentsiblingsapplied)
             allparentsiblingsapplied = not (False in parentsiblingsapplied)
 
             parentsiblingspartial = [hnk.partial for hnk
                                      in item.hunk.header.hunks]
             someparentsiblingspartial = (True in parentsiblingspartial)
 
             # if all parent hunks are not applied, un-apply header
             if noparentsiblingsapplied:
                 if not item.hunk.header.special():
                     item.hunk.header.applied = False
                     item.hunk.header.partial = False
             # set the applied and partial status of the header if needed
             else: # some/all parent siblings are applied
                 item.hunk.header.applied = True
                 item.hunk.header.partial = (someparentsiblingspartial or
                                             not allparentsiblingsapplied)
 
     def toggleall(self):
         "toggle the applied flag of all items."
         if self.waslasttoggleallapplied: # then unapply them this time
             for item in self.headerlist:
                 if item.applied:
                     self.toggleapply(item)
         else:
             for item in self.headerlist:
                 if not item.applied:
                     self.toggleapply(item)
         self.waslasttoggleallapplied = not self.waslasttoggleallapplied
 
     def togglefolded(self, item=None, foldparent=False):
         "toggle folded flag of specified item (defaults to currently selected)"
         if item is None:
             item = self.currentselecteditem
         if foldparent or (isinstance(item, uiheader) and item.neverunfolded):
             if not isinstance(item, uiheader):
                 # we need to select the parent item in this case
                 self.currentselecteditem = item = item.parentitem()
             elif item.neverunfolded:
                 item.neverunfolded = False
 
             # also fold any foldable children of the parent/current item
             if isinstance(item, uiheader): # the original or 'new' item
                 for child in item.allchildren():
                     child.folded = not item.folded
 
         if isinstance(item, (uiheader, uihunk)):
             item.folded = not item.folded
 
     def alignstring(self, instr, window):
         """
         add whitespace to the end of a string in order to make it fill
         the screen in the x direction.  the current cursor position is
         taken into account when making this calculation.  the string can span
         multiple lines.
         """
         y, xstart = window.getyx()
         width = self.xscreensize
         # turn tabs into spaces
         instr = instr.expandtabs(4)
         strwidth = encoding.colwidth(instr)
         numspaces = (width - ((strwidth + xstart) % width) - 1)
         return instr + " " * numspaces + "\n"
 
     def printstring(self, window, text, fgcolor=None, bgcolor=None, pair=None,
         pairname=None, attrlist=None, towin=True, align=True, showwhtspc=False):
         """
         print the string, text, with the specified colors and attributes, to
         the specified curses window object.
 
         the foreground and background colors are of the form
         curses.color_xxxx, where xxxx is one of: [black, blue, cyan, green,
         magenta, red, white, yellow].  if pairname is provided, a color
         pair will be looked up in the self.colorpairnames dictionary.
 
         attrlist is a list containing text attributes in the form of
         curses.a_xxxx, where xxxx can be: [bold, dim, normal, standout,
         underline].
 
         if align == True, whitespace is added to the printed string such that
         the string stretches to the right border of the window.
 
         if showwhtspc == True, trailing whitespace of a string is highlighted.
         """
         # preprocess the text, converting tabs to spaces
         text = text.expandtabs(4)
         # strip \n, and convert control characters to ^[char] representation
         text = re.sub(br'[\x00-\x08\x0a-\x1f]',
                 lambda m:'^' + chr(ord(m.group()) + 64), text.strip('\n'))
 
         if pair is not None:
             colorpair = pair
         elif pairname is not None:
             colorpair = self.colorpairnames[pairname]
         else:
             if fgcolor is None:
                 fgcolor = -1
             if bgcolor is None:
                 bgcolor = -1
             if (fgcolor, bgcolor) in self.colorpairs:
                 colorpair = self.colorpairs[(fgcolor, bgcolor)]
             else:
                 colorpair = self.getcolorpair(fgcolor, bgcolor)
         # add attributes if possible
         if attrlist is None:
             attrlist = []
         if colorpair < 256:
             # then it is safe to apply all attributes
             for textattr in attrlist:
                 colorpair |= textattr
         else:
             # just apply a select few (safe?) attributes
             for textattr in (curses.A_UNDERLINE, curses.A_BOLD):
                 if textattr in attrlist:
                     colorpair |= textattr
 
         y, xstart = self.chunkpad.getyx()
         t = "" # variable for counting lines printed
         # if requested, show trailing whitespace
         if showwhtspc:
             origlen = len(text)
             text = text.rstrip(' \n') # tabs have already been expanded
             strippedlen = len(text)
             numtrailingspaces = origlen - strippedlen
 
         if towin:
             window.addstr(text, colorpair)
         t += text
 
         if showwhtspc:
                 wscolorpair = colorpair | curses.A_REVERSE
                 if towin:
                     for i in range(numtrailingspaces):
                         window.addch(curses.ACS_CKBOARD, wscolorpair)
                 t += " " * numtrailingspaces
 
         if align:
             if towin:
                 extrawhitespace = self.alignstring("", window)
                 window.addstr(extrawhitespace, colorpair)
             else:
                 # need to use t, since the x position hasn't incremented
                 extrawhitespace = self.alignstring(t, window)
             t += extrawhitespace
 
         # is reset to 0 at the beginning of printitem()
 
         linesprinted = (xstart + len(t)) / self.xscreensize
         self.linesprintedtopadsofar += linesprinted
         return t
 
     def _getstatuslinesegments(self):
         """-> [str]. return segments"""
         selected = self.currentselecteditem.applied
         spaceselect = _('space: select')
         spacedeselect = _('space: deselect')
         # Format the selected label into a place as long as the longer of the
         # two possible labels.  This may vary by language.
         spacelen = max(len(spaceselect), len(spacedeselect))
         selectedlabel = '%-*s' % (spacelen,
                                   spacedeselect if selected else spaceselect)
         segments = [
             _headermessages[self.operation],
             '-',
             _('[x]=selected **=collapsed'),
             _('c: confirm'),
             _('q: abort'),
             _('arrow keys: move/expand/collapse'),
             selectedlabel,
             _('?: help'),
         ]
         return segments
 
     def _getstatuslines(self):
         """() -> [str]. return short help used in the top status window"""
         if self.errorstr is not None:
             lines = [self.errorstr, _('Press any key to continue')]
         else:
             # wrap segments to lines
             segments = self._getstatuslinesegments()
             width = self.xscreensize
             lines = []
             lastwidth = width
             for s in segments:
                 w = encoding.colwidth(s)
                 sep = ' ' * (1 + (s and s[0] not in '-['))
                 if lastwidth + w + len(sep) >= width:
                     lines.append(s)
                     lastwidth = w
                 else:
                     lines[-1] += sep + s
                     lastwidth += w + len(sep)
         if len(lines) != self.numstatuslines:
             self.numstatuslines = len(lines)
             self.statuswin.resize(self.numstatuslines, self.xscreensize)
         return [stringutil.ellipsis(l, self.xscreensize - 1) for l in lines]
 
     def updatescreen(self):
         self.statuswin.erase()
         self.chunkpad.erase()
 
         printstring = self.printstring
 
         # print out the status lines at the top
         try:
             for line in self._getstatuslines():
                 printstring(self.statuswin, line, pairname="legend")
             self.statuswin.refresh()
         except curses.error:
             pass
         if self.errorstr is not None:
             return
 
         # print out the patch in the remaining part of the window
         try:
             self.printitem()
             self.updatescroll()
             self.chunkpad.refresh(self.firstlineofpadtoprint, 0,
                                   self.numstatuslines, 0,
                                   self.yscreensize - self.numstatuslines,
                                   self.xscreensize)
         except curses.error:
             pass
 
     def getstatusprefixstring(self, item):
         """
         create a string to prefix a line with which indicates whether 'item'
         is applied and/or folded.
         """
 
         # create checkbox string
         if item.applied:
             if not isinstance(item, uihunkline) and item.partial:
                 checkbox = "[~]"
             else:
                 checkbox = "[x]"
         else:
             checkbox = "[ ]"
 
         try:
             if item.folded:
                 checkbox += "**"
                 if isinstance(item, uiheader):
                     # one of "m", "a", or "d" (modified, added, deleted)
                     filestatus = item.changetype
 
                     checkbox += filestatus + " "
             else:
                 checkbox += "  "
                 if isinstance(item, uiheader):
                     # add two more spaces for headers
                     checkbox += "  "
         except AttributeError: # not foldable
             checkbox += "  "
 
         return checkbox
 
     def printheader(self, header, selected=False, towin=True,
                     ignorefolding=False):
         """
         print the header to the pad.  if countlines is True, don't print
         anything, but just count the number of lines which would be printed.
         """
 
         outstr = ""
         text = header.prettystr()
         chunkindex = self.chunklist.index(header)
 
         if chunkindex != 0 and not header.folded:
             # add separating line before headers
             outstr += self.printstring(self.chunkpad, '_' * self.xscreensize,
                                        towin=towin, align=False)
         # select color-pair based on if the header is selected
         colorpair = self.getcolorpair(name=selected and "selected" or "normal",
                                       attrlist=[curses.A_BOLD])
 
         # print out each line of the chunk, expanding it to screen width
 
         # number of characters to indent lines on this level by
         indentnumchars = 0
         checkbox = self.getstatusprefixstring(header)
         if not header.folded or ignorefolding:
             textlist = text.split("\n")
             linestr = checkbox + textlist[0]
         else:
             linestr = checkbox + header.filename()
         outstr += self.printstring(self.chunkpad, linestr, pair=colorpair,
                                    towin=towin)
         if not header.folded or ignorefolding:
             if len(textlist) > 1:
                 for line in textlist[1:]:
                     linestr = " "*(indentnumchars + len(checkbox)) + line
                     outstr += self.printstring(self.chunkpad, linestr,
                                                pair=colorpair, towin=towin)
 
         return outstr
 
     def printhunklinesbefore(self, hunk, selected=False, towin=True,
                              ignorefolding=False):
         "includes start/end line indicator"
         outstr = ""
         # where hunk is in list of siblings
         hunkindex = hunk.header.hunks.index(hunk)
 
         if hunkindex != 0:
             # add separating line before headers
             outstr += self.printstring(self.chunkpad, ' '*self.xscreensize,
                                        towin=towin, align=False)
 
         colorpair = self.getcolorpair(name=selected and "selected" or "normal",
                                       attrlist=[curses.A_BOLD])
 
         # print out from-to line with checkbox
         checkbox = self.getstatusprefixstring(hunk)
 
         lineprefix = " "*self.hunkindentnumchars + checkbox
         frtoline = "   " + hunk.getfromtoline().strip("\n")
 
         outstr += self.printstring(self.chunkpad, lineprefix, towin=towin,
                                    align=False) # add uncolored checkbox/indent
         outstr += self.printstring(self.chunkpad, frtoline, pair=colorpair,
                                    towin=towin)
 
         if hunk.folded and not ignorefolding:
             # skip remainder of output
             return outstr
 
         # print out lines of the chunk preceeding changed-lines
         for line in hunk.before:
             linestr = " "*(self.hunklineindentnumchars + len(checkbox)) + line
             outstr += self.printstring(self.chunkpad, linestr, towin=towin)
 
         return outstr
 
     def printhunklinesafter(self, hunk, towin=True, ignorefolding=False):
         outstr = ""
         if hunk.folded and not ignorefolding:
             return outstr
 
         # a bit superfluous, but to avoid hard-coding indent amount
         checkbox = self.getstatusprefixstring(hunk)
         for line in hunk.after:
             linestr = " "*(self.hunklineindentnumchars + len(checkbox)) + line
             outstr += self.printstring(self.chunkpad, linestr, towin=towin)
 
         return outstr
 
     def printhunkchangedline(self, hunkline, selected=False, towin=True):
         outstr = ""
         checkbox = self.getstatusprefixstring(hunkline)
 
         linestr = hunkline.prettystr().strip("\n")
 
         # select color-pair based on whether line is an addition/removal
         if selected:
             colorpair = self.getcolorpair(name="selected")
         elif linestr.startswith("+"):
             colorpair = self.getcolorpair(name="addition")
         elif linestr.startswith("-"):
             colorpair = self.getcolorpair(name="deletion")
         elif linestr.startswith("\\"):
             colorpair = self.getcolorpair(name="normal")
 
         lineprefix = " "*self.hunklineindentnumchars + checkbox
         outstr += self.printstring(self.chunkpad, lineprefix, towin=towin,
                                    align=False) # add uncolored checkbox/indent
         outstr += self.printstring(self.chunkpad, linestr, pair=colorpair,
                                    towin=towin, showwhtspc=True)
         return outstr
 
     def printitem(self, item=None, ignorefolding=False, recursechildren=True,
                   towin=True):
         """
         use __printitem() to print the the specified item.applied.
         if item is not specified, then print the entire patch.
         (hiding folded elements, etc. -- see __printitem() docstring)
         """
 
         if item is None:
             item = self.headerlist
         if recursechildren:
             self.linesprintedtopadsofar = 0
 
         outstr = []
         self.__printitem(item, ignorefolding, recursechildren, outstr,
                                   towin=towin)
         return ''.join(outstr)
 
     def outofdisplayedarea(self):
         y, _ = self.chunkpad.getyx() # cursor location
         # * 2 here works but an optimization would be the max number of
         # consecutive non selectable lines
         # i.e the max number of context line for any hunk in the patch
         miny = min(0, self.firstlineofpadtoprint - self.yscreensize)
         maxy = self.firstlineofpadtoprint + self.yscreensize * 2
         return y < miny or y > maxy
 
     def handleselection(self, item, recursechildren):
         selected = (item is self.currentselecteditem)
         if selected and recursechildren:
             # assumes line numbering starting from line 0
             self.selecteditemstartline = self.linesprintedtopadsofar
             selecteditemlines = self.getnumlinesdisplayed(item,
                                                           recursechildren=False)
             self.selecteditemendline = (self.selecteditemstartline +
                                         selecteditemlines - 1)
         return selected
 
     def __printitem(self, item, ignorefolding, recursechildren, outstr,
                     towin=True):
         """
         recursive method for printing out patch/header/hunk/hunk-line data to
         screen.  also returns a string with all of the content of the displayed
         patch (not including coloring, etc.).
 
         if ignorefolding is True, then folded items are printed out.
 
         if recursechildren is False, then only print the item without its
         child items.
         """
 
         if towin and self.outofdisplayedarea():
             return
 
         selected = self.handleselection(item, recursechildren)
 
         # patch object is a list of headers
         if isinstance(item, patch):
             if recursechildren:
                 for hdr in item:
                     self.__printitem(hdr, ignorefolding,
                             recursechildren, outstr, towin)
         # todo: eliminate all isinstance() calls
         if isinstance(item, uiheader):
             outstr.append(self.printheader(item, selected, towin=towin,
                                        ignorefolding=ignorefolding))
             if recursechildren:
                 for hnk in item.hunks:
                     self.__printitem(hnk, ignorefolding,
                             recursechildren, outstr, towin)
         elif (isinstance(item, uihunk) and
               ((not item.header.folded) or ignorefolding)):
             # print the hunk data which comes before the changed-lines
             outstr.append(self.printhunklinesbefore(item, selected, towin=towin,
                                                 ignorefolding=ignorefolding))
             if recursechildren:
                 for l in item.changedlines:
                     self.__printitem(l, ignorefolding,
                             recursechildren, outstr, towin)
                 outstr.append(self.printhunklinesafter(item, towin=towin,
                                                 ignorefolding=ignorefolding))
         elif (isinstance(item, uihunkline) and
               ((not item.hunk.folded) or ignorefolding)):
             outstr.append(self.printhunkchangedline(item, selected,
                 towin=towin))
 
         return outstr
 
     def getnumlinesdisplayed(self, item=None, ignorefolding=False,
                              recursechildren=True):
         """
         return the number of lines which would be displayed if the item were
         to be printed to the display.  the item will not be printed to the
         display (pad).
         if no item is given, assume the entire patch.
         if ignorefolding is True, folded items will be unfolded when counting
         the number of lines.
         """
 
         # temporarily disable printing to windows by printstring
         patchdisplaystring = self.printitem(item, ignorefolding,
                                             recursechildren, towin=False)
         numlines = len(patchdisplaystring) // self.xscreensize
         return numlines
 
     def sigwinchhandler(self, n, frame):
         "handle window resizing"
         try:
             curses.endwin()
             self.xscreensize, self.yscreensize = scmutil.termsize(self.ui)
             self.statuswin.resize(self.numstatuslines, self.xscreensize)
             self.numpadlines = self.getnumlinesdisplayed(ignorefolding=True) + 1
             self.chunkpad = curses.newpad(self.numpadlines, self.xscreensize)
         except curses.error:
             pass
 
     def getcolorpair(self, fgcolor=None, bgcolor=None, name=None,
                      attrlist=None):
         """
         get a curses color pair, adding it to self.colorpairs if it is not
         already defined.  an optional string, name, can be passed as a shortcut
         for referring to the color-pair.  by default, if no arguments are
         specified, the white foreground / black background color-pair is
         returned.
 
         it is expected that this function will be used exclusively for
         initializing color pairs, and not curses.init_pair().
 
         attrlist is used to 'flavor' the returned color-pair.  this information
         is not stored in self.colorpairs.  it contains attribute values like
         curses.A_BOLD.
         """
 
         if (name is not None) and name in self.colorpairnames:
             # then get the associated color pair and return it
             colorpair = self.colorpairnames[name]
         else:
             if fgcolor is None:
                 fgcolor = -1
             if bgcolor is None:
                 bgcolor = -1
             if (fgcolor, bgcolor) in self.colorpairs:
                 colorpair = self.colorpairs[(fgcolor, bgcolor)]
             else:
                 pairindex = len(self.colorpairs) + 1
                 if self.usecolor:
                     curses.init_pair(pairindex, fgcolor, bgcolor)
                     colorpair = self.colorpairs[(fgcolor, bgcolor)] = (
                         curses.color_pair(pairindex))
                     if name is not None:
                         self.colorpairnames[name] = curses.color_pair(pairindex)
                 else:
                     cval = 0
                     if name is not None:
                         if name == 'selected':
                             cval = curses.A_REVERSE
                         self.colorpairnames[name] = cval
                     colorpair = self.colorpairs[(fgcolor, bgcolor)] = cval
 
         # add attributes if possible
         if attrlist is None:
             attrlist = []
         if colorpair < 256:
             # then it is safe to apply all attributes
             for textattr in attrlist:
                 colorpair |= textattr
         else:
             # just apply a select few (safe?) attributes
             for textattrib in (curses.A_UNDERLINE, curses.A_BOLD):
                 if textattrib in attrlist:
                     colorpair |= textattrib
         return colorpair
 
     def initcolorpair(self, *args, **kwargs):
         "same as getcolorpair."
         self.getcolorpair(*args, **kwargs)
 
     def helpwindow(self):
         "print a help window to the screen.  exit after any keypress."
         helptext = _(
             """            [press any key to return to the patch-display]
 
 crecord allows you to interactively choose among the changes you have made,
 and confirm only those changes you select for further processing by the command
 you are running (commit/shelve/revert), after confirming the selected
 changes, the unselected changes are still present in your working copy, so you
 can use crecord multiple times to split large changes into smaller changesets.
 the following are valid keystrokes:
 
                 [space] : (un-)select item ([~]/[x] = partly/fully applied)
                       A : (un-)select all items
     up/down-arrow [k/j] : go to previous/next unfolded item
         pgup/pgdn [K/J] : go to previous/next item of same type
  right/left-arrow [l/h] : go to child item / parent item
  shift-left-arrow   [H] : go to parent header / fold selected header
                       f : fold / unfold item, hiding/revealing its children
                       F : fold / unfold parent item and all of its ancestors
                  ctrl-l : scroll the selected line to the top of the screen
                       m : edit / resume editing the commit message
                       e : edit the currently selected hunk
                       a : toggle amend mode, only with commit -i
                       c : confirm selected changes
                       r : review/edit and confirm selected changes
                       q : quit without confirming (no changes will be made)
                       ? : help (what you're currently reading)""")
 
         helpwin = curses.newwin(self.yscreensize, 0, 0, 0)
         helplines = helptext.split("\n")
         helplines = helplines + [" "]*(
             self.yscreensize - self.numstatuslines - len(helplines) - 1)
         try:
             for line in helplines:
                 self.printstring(helpwin, line, pairname="legend")
         except curses.error:
             pass
         helpwin.refresh()
         try:
             with self.ui.timeblockedsection('crecord'):
                 helpwin.getkey()
         except curses.error:
             pass
 
     def commitMessageWindow(self):
         "Create a temporary commit message editing window on the screen."
 
         curses.raw()
         curses.def_prog_mode()
         curses.endwin()
         self.commenttext = self.ui.edit(self.commenttext, self.ui.username())
         curses.cbreak()
         self.stdscr.refresh()
         self.stdscr.keypad(1) # allow arrow-keys to continue to function
 
     def confirmationwindow(self, windowtext):
         "display an informational window, then wait for and return a keypress."
 
         confirmwin = curses.newwin(self.yscreensize, 0, 0, 0)
         try:
             lines = windowtext.split("\n")
             for line in lines:
                 self.printstring(confirmwin, line, pairname="selected")
         except curses.error:
             pass
         self.stdscr.refresh()
         confirmwin.refresh()
         try:
             with self.ui.timeblockedsection('crecord'):
                 response = chr(self.stdscr.getch())
         except ValueError:
             response = None
 
         return response
 
     def reviewcommit(self):
         """ask for 'y' to be pressed to confirm selected. return True if
         confirmed."""
         confirmtext = _(
 """if you answer yes to the following, the your currently chosen patch chunks
 will be loaded into an editor.  you may modify the patch from the editor, and
 save the changes if you wish to change the patch.  otherwise, you can just
 close the editor without saving to accept the current patch as-is.
 
 note: don't add/remove lines unless you also modify the range information.
       failing to follow this rule will result in the commit aborting.
 
 are you sure you want to review/edit and confirm the selected changes [yn]?
 """)
         with self.ui.timeblockedsection('crecord'):
             response = self.confirmationwindow(confirmtext)
         if response is None:
             response = "n"
         if response.lower().startswith("y"):
             return True
         else:
             return False
 
     def toggleamend(self, opts, test):
         """Toggle the amend flag.
 
         When the amend flag is set, a commit will modify the most recently
         committed changeset, instead of creating a new changeset.  Otherwise, a
         new changeset will be created (the normal commit behavior).
         """
 
         try:
             ver = float(util.version()[:3])
         except ValueError:
             ver = 1
         if ver < 2.19:
             msg = _("The amend option is unavailable with hg versions < 2.2\n\n"
                     "Press any key to continue.")
         elif opts.get('amend') is None:
             opts['amend'] = True
             msg = _("Amend option is turned on -- committing the currently "
                     "selected changes will not create a new changeset, but "
                     "instead update the most recently committed changeset.\n\n"
                     "Press any key to continue.")
         elif opts.get('amend') is True:
             opts['amend'] = None
             msg = _("Amend option is turned off -- committing the currently "
                     "selected changes will create a new changeset.\n\n"
                     "Press any key to continue.")
         if not test:
             self.confirmationwindow(msg)
 
     def recenterdisplayedarea(self):
         """
         once we scrolled with pg up pg down we can be pointing outside of the
         display zone. we print the patch with towin=False to compute the
         location of the selected item even though it is outside of the displayed
         zone and then update the scroll.
         """
         self.printitem(towin=False)
         self.updatescroll()
 
     def toggleedit(self, item=None, test=False):
         """
         edit the currently selected chunk
         """
         def updateui(self):
             self.numpadlines = self.getnumlinesdisplayed(ignorefolding=True) + 1
             self.chunkpad = curses.newpad(self.numpadlines, self.xscreensize)
             self.updatescroll()
             self.stdscr.refresh()
             self.statuswin.refresh()
             self.stdscr.keypad(1)
 
         def editpatchwitheditor(self, chunk):
             if chunk is None:
                 self.ui.write(_('cannot edit patch for whole file'))
                 self.ui.write("\n")
                 return None
             if chunk.header.binary():
                 self.ui.write(_('cannot edit patch for binary file'))
                 self.ui.write("\n")
                 return None
 
             # write the initial patch
             patch = stringio()
             patch.write(diffhelptext + hunkhelptext)
             chunk.header.write(patch)
             chunk.write(patch)
 
             # start the editor and wait for it to complete
             try:
                 patch = self.ui.edit(patch.getvalue(), "", action="diff")
             except error.Abort as exc:
                 self.errorstr = str(exc)
                 return None
 
             # remove comment lines
             patch = [line + '\n' for line in patch.splitlines()
                      if not line.startswith('#')]
             return patchmod.parsepatch(patch)
 
         if item is None:
             item = self.currentselecteditem
         if isinstance(item, uiheader):
             return
         if isinstance(item, uihunkline):
             item = item.parentitem()
         if not isinstance(item, uihunk):
             return
 
         # To go back to that hunk or its replacement at the end of the edit
         itemindex = item.parentitem().hunks.index(item)
 
         beforeadded, beforeremoved = item.added, item.removed
         newpatches = editpatchwitheditor(self, item)
         if newpatches is None:
             if not test:
                 updateui(self)
             return
         header = item.header
         editedhunkindex = header.hunks.index(item)
         hunksbefore = header.hunks[:editedhunkindex]
         hunksafter = header.hunks[editedhunkindex + 1:]
         newpatchheader = newpatches[0]
         newhunks = [uihunk(h, header) for h in newpatchheader.hunks]
         newadded = sum([h.added for h in newhunks])
         newremoved = sum([h.removed for h in newhunks])
         offset = (newadded - beforeadded) - (newremoved - beforeremoved)
 
         for h in hunksafter:
             h.toline += offset
         for h in newhunks:
             h.folded = False
         header.hunks = hunksbefore + newhunks + hunksafter
         if self.emptypatch():
             header.hunks = hunksbefore + [item] + hunksafter
         self.currentselecteditem = header
         if len(header.hunks) > itemindex:
             self.currentselecteditem = header.hunks[itemindex]
 
         if not test:
             updateui(self)
 
     def emptypatch(self):
         item = self.headerlist
         if not item:
             return True
         for header in item:
             if header.hunks:
                 return False
         return True
 
     def handlekeypressed(self, keypressed, test=False):
         """
         Perform actions based on pressed keys.
 
         Return true to exit the main loop.
         """
         if keypressed in ["k", "KEY_UP"]:
             self.uparrowevent()
         if keypressed in ["K", "KEY_PPAGE"]:
             self.uparrowshiftevent()
         elif keypressed in ["j", "KEY_DOWN"]:
             self.downarrowevent()
         elif keypressed in ["J", "KEY_NPAGE"]:
             self.downarrowshiftevent()
         elif keypressed in ["l", "KEY_RIGHT"]:
             self.rightarrowevent()
         elif keypressed in ["h", "KEY_LEFT"]:
             self.leftarrowevent()
         elif keypressed in ["H", "KEY_SLEFT"]:
             self.leftarrowshiftevent()
         elif keypressed in ["q"]:
             raise error.Abort(_('user quit'))
         elif keypressed in ['a']:
             self.toggleamend(self.opts, test)
         elif keypressed in ["c"]:
             return True
         elif test and keypressed in ['X']:
             return True
         elif keypressed in ["r"]:
             if self.reviewcommit():
                 self.opts['review'] = True
                 return True
         elif test and keypressed in ['R']:
             self.opts['review'] = True
             return True
         elif keypressed in [' '] or (test and keypressed in ["TOGGLE"]):
             self.toggleapply()
             if self.ui.configbool('experimental', 'spacemovesdown'):
                 self.downarrowevent()
         elif keypressed in ['A']:
             self.toggleall()
         elif keypressed in ['e']:
             self.toggleedit(test=test)
         elif keypressed in ["f"]:
             self.togglefolded()
         elif keypressed in ["F"]:
             self.togglefolded(foldparent=True)
         elif keypressed in ["m"]:
             self.commitMessageWindow()
         elif keypressed in ["?"]:
             self.helpwindow()
             self.stdscr.clear()
             self.stdscr.refresh()
         elif curses.unctrl(keypressed) in ["^L"]:
             # scroll the current line to the top of the screen
             self.scrolllines(self.selecteditemstartline)
 
     def main(self, stdscr):
         """
         method to be wrapped by curses.wrapper() for selecting chunks.
         """
 
         origsigwinch = sentinel = object()
         if util.safehasattr(signal, 'SIGWINCH'):
             origsigwinch = signal.signal(signal.SIGWINCH,
                                          self.sigwinchhandler)
         try:
             return self._main(stdscr)
         finally:
             if origsigwinch is not sentinel:
                 signal.signal(signal.SIGWINCH, origsigwinch)
 
     def _main(self, stdscr):
         self.stdscr = stdscr
         # error during initialization, cannot be printed in the curses
         # interface, it should be printed by the calling code
         self.initexc = None
         self.yscreensize, self.xscreensize = self.stdscr.getmaxyx()
 
         curses.start_color()
         try:
             curses.use_default_colors()
         except curses.error:
             self.usecolor = False
 
         # available colors: black, blue, cyan, green, magenta, white, yellow
         # init_pair(color_id, foreground_color, background_color)
         self.initcolorpair(None, None, name="normal")
         self.initcolorpair(curses.COLOR_WHITE, curses.COLOR_MAGENTA,
                            name="selected")
         self.initcolorpair(curses.COLOR_RED, None, name="deletion")
         self.initcolorpair(curses.COLOR_GREEN, None, name="addition")
         self.initcolorpair(curses.COLOR_WHITE, curses.COLOR_BLUE, name="legend")
         # newwin([height, width,] begin_y, begin_x)
         self.statuswin = curses.newwin(self.numstatuslines, 0, 0, 0)
         self.statuswin.keypad(1) # interpret arrow-key, etc. esc sequences
 
         # figure out how much space to allocate for the chunk-pad which is
         # used for displaying the patch
 
         # stupid hack to prevent getnumlinesdisplayed from failing
         self.chunkpad = curses.newpad(1, self.xscreensize)
 
         # add 1 so to account for last line text reaching end of line
         self.numpadlines = self.getnumlinesdisplayed(ignorefolding=True) + 1
 
         try:
             self.chunkpad = curses.newpad(self.numpadlines, self.xscreensize)
         except curses.error:
             self.initexc = fallbackerror(
                 _('this diff is too large to be displayed'))
             return
         # initialize selecteditemendline (initial start-line is 0)
         self.selecteditemendline = self.getnumlinesdisplayed(
             self.currentselecteditem, recursechildren=False)
 
         while True:
             self.updatescreen()
             try:
                 with self.ui.timeblockedsection('crecord'):
                     keypressed = self.statuswin.getkey()
                 if self.errorstr is not None:
                     self.errorstr = None
                     continue
             except curses.error:
                 keypressed = "foobar"
             if self.handlekeypressed(keypressed):
                 break
 
         if self.commenttext != "":
             whitespaceremoved = re.sub("(?m)^\s.*(\n|$)", "", self.commenttext)
             if whitespaceremoved != "":
                 self.opts['message'] = self.commenttext

mercurial/merge.py

@@ -1,2232 +1,2234 b''
 # merge.py - directory-level update/merge handling for Mercurial
 #
 # Copyright 2006, 2007 Matt Mackall <[e-mail]>
 #
 # This software may be used and distributed according to the terms of the
 # GNU General Public License version 2 or any later version.
 
 from __future__ import absolute_import
 
 import errno
 import hashlib
 import shutil
 import struct
 
 from .i18n import _
 from .node import (
     addednodeid,
     bin,
     hex,
     modifiednodeid,
     nullhex,
     nullid,
     nullrev,
 )
 from .thirdparty import (
     attr,
 )
 from . import (
     copies,
     error,
     filemerge,
     match as matchmod,
     obsutil,
     pycompat,
     scmutil,
     subrepoutil,
     util,
     worker,
 )
 
 _pack = struct.pack
 _unpack = struct.unpack
 
 def _droponode(data):
     # used for compatibility for v1
     bits = data.split('\0')
     bits = bits[:-2] + bits[-1:]
     return '\0'.join(bits)
 
 # Merge state record types. See ``mergestate`` docs for more.
 RECORD_LOCAL = b'L'
 RECORD_OTHER = b'O'
 RECORD_MERGED = b'F'
 RECORD_CHANGEDELETE_CONFLICT = b'C'
 RECORD_MERGE_DRIVER_MERGE = b'D'
 RECORD_PATH_CONFLICT = b'P'
 RECORD_MERGE_DRIVER_STATE = b'm'
 RECORD_FILE_VALUES = b'f'
 RECORD_LABELS = b'l'
 RECORD_OVERRIDE = b't'
 RECORD_UNSUPPORTED_MANDATORY = b'X'
 RECORD_UNSUPPORTED_ADVISORY = b'x'
 
 MERGE_DRIVER_STATE_UNMARKED = b'u'
 MERGE_DRIVER_STATE_MARKED = b'm'
 MERGE_DRIVER_STATE_SUCCESS = b's'
 
 MERGE_RECORD_UNRESOLVED = b'u'
 MERGE_RECORD_RESOLVED = b'r'
 MERGE_RECORD_UNRESOLVED_PATH = b'pu'
 MERGE_RECORD_RESOLVED_PATH = b'pr'
 MERGE_RECORD_DRIVER_RESOLVED = b'd'
 
 ACTION_FORGET = b'f'
 ACTION_REMOVE = b'r'
 ACTION_ADD = b'a'
 ACTION_GET = b'g'
 ACTION_PATH_CONFLICT = b'p'
 ACTION_PATH_CONFLICT_RESOLVE = b'pr'
 ACTION_ADD_MODIFIED = b'am'
 ACTION_CREATED = b'c'
 ACTION_DELETED_CHANGED = b'dc'
 ACTION_CHANGED_DELETED = b'cd'
 ACTION_MERGE = b'm'
 ACTION_LOCAL_DIR_RENAME_GET = b'dg'
 ACTION_DIR_RENAME_MOVE_LOCAL = b'dm'
 ACTION_KEEP = b'k'
 ACTION_EXEC = b'e'
 ACTION_CREATED_MERGE = b'cm'
 
 class mergestate(object):
     '''track 3-way merge state of individual files
 
     The merge state is stored on disk when needed. Two files are used: one with
     an old format (version 1), and one with a new format (version 2). Version 2
     stores a superset of the data in version 1, including new kinds of records
     in the future. For more about the new format, see the documentation for
     `_readrecordsv2`.
 
     Each record can contain arbitrary content, and has an associated type. This
     `type` should be a letter. If `type` is uppercase, the record is mandatory:
     versions of Mercurial that don't support it should abort. If `type` is
     lowercase, the record can be safely ignored.
 
     Currently known records:
 
     L: the node of the "local" part of the merge (hexified version)
     O: the node of the "other" part of the merge (hexified version)
     F: a file to be merged entry
     C: a change/delete or delete/change conflict
     D: a file that the external merge driver will merge internally
        (experimental)
     P: a path conflict (file vs directory)
     m: the external merge driver defined for this merge plus its run state
        (experimental)
     f: a (filename, dictionary) tuple of optional values for a given file
     X: unsupported mandatory record type (used in tests)
     x: unsupported advisory record type (used in tests)
     l: the labels for the parts of the merge.
 
     Merge driver run states (experimental):
     u: driver-resolved files unmarked -- needs to be run next time we're about
        to resolve or commit
     m: driver-resolved files marked -- only needs to be run before commit
     s: success/skipped -- does not need to be run any more
 
     Merge record states (stored in self._state, indexed by filename):
     u: unresolved conflict
     r: resolved conflict
     pu: unresolved path conflict (file conflicts with directory)
     pr: resolved path conflict
     d: driver-resolved conflict
 
     The resolve command transitions between 'u' and 'r' for conflicts and
     'pu' and 'pr' for path conflicts.
     '''
     statepathv1 = 'merge/state'
     statepathv2 = 'merge/state2'
 
     @staticmethod
     def clean(repo, node=None, other=None, labels=None):
         """Initialize a brand new merge state, removing any existing state on
         disk."""
         ms = mergestate(repo)
         ms.reset(node, other, labels)
         return ms
 
     @staticmethod
     def read(repo):
         """Initialize the merge state, reading it from disk."""
         ms = mergestate(repo)
         ms._read()
         return ms
 
     def __init__(self, repo):
         """Initialize the merge state.
 
         Do not use this directly! Instead call read() or clean()."""
         self._repo = repo
         self._dirty = False
         self._labels = None
 
     def reset(self, node=None, other=None, labels=None):
         self._state = {}
         self._stateextras = {}
         self._local = None
         self._other = None
         self._labels = labels
         for var in ('localctx', 'otherctx'):
             if var in vars(self):
                 delattr(self, var)
         if node:
             self._local = node
             self._other = other
         self._readmergedriver = None
         if self.mergedriver:
             self._mdstate = MERGE_DRIVER_STATE_SUCCESS
         else:
             self._mdstate = MERGE_DRIVER_STATE_UNMARKED
         shutil.rmtree(self._repo.vfs.join('merge'), True)
         self._results = {}
         self._dirty = False
 
     def _read(self):
         """Analyse each record content to restore a serialized state from disk
 
         This function process "record" entry produced by the de-serialization
         of on disk file.
         """
         self._state = {}
         self._stateextras = {}
         self._local = None
         self._other = None
         for var in ('localctx', 'otherctx'):
             if var in vars(self):
                 delattr(self, var)
         self._readmergedriver = None
         self._mdstate = MERGE_DRIVER_STATE_SUCCESS
         unsupported = set()
         records = self._readrecords()
         for rtype, record in records:
             if rtype == RECORD_LOCAL:
                 self._local = bin(record)
             elif rtype == RECORD_OTHER:
                 self._other = bin(record)
             elif rtype == RECORD_MERGE_DRIVER_STATE:
                 bits = record.split('\0', 1)
                 mdstate = bits[1]
                 if len(mdstate) != 1 or mdstate not in (
                     MERGE_DRIVER_STATE_UNMARKED, MERGE_DRIVER_STATE_MARKED,
                     MERGE_DRIVER_STATE_SUCCESS):
                     # the merge driver should be idempotent, so just rerun it
                     mdstate = MERGE_DRIVER_STATE_UNMARKED
 
                 self._readmergedriver = bits[0]
                 self._mdstate = mdstate
             elif rtype in (RECORD_MERGED, RECORD_CHANGEDELETE_CONFLICT,
                            RECORD_PATH_CONFLICT, RECORD_MERGE_DRIVER_MERGE):
                 bits = record.split('\0')
                 self._state[bits[0]] = bits[1:]
             elif rtype == RECORD_FILE_VALUES:
                 filename, rawextras = record.split('\0', 1)
                 extraparts = rawextras.split('\0')
                 extras = {}
                 i = 0
                 while i < len(extraparts):
                     extras[extraparts[i]] = extraparts[i + 1]
                     i += 2
 
                 self._stateextras[filename] = extras
             elif rtype == RECORD_LABELS:
                 labels = record.split('\0', 2)
                 self._labels = [l for l in labels if len(l) > 0]
             elif not rtype.islower():
                 unsupported.add(rtype)
         self._results = {}
         self._dirty = False
 
         if unsupported:
             raise error.UnsupportedMergeRecords(unsupported)
 
     def _readrecords(self):
         """Read merge state from disk and return a list of record (TYPE, data)
 
         We read data from both v1 and v2 files and decide which one to use.
 
         V1 has been used by version prior to 2.9.1 and contains less data than
         v2. We read both versions and check if no data in v2 contradicts
         v1. If there is not contradiction we can safely assume that both v1
         and v2 were written at the same time and use the extract data in v2. If
         there is contradiction we ignore v2 content as we assume an old version
         of Mercurial has overwritten the mergestate file and left an old v2
         file around.
 
         returns list of record [(TYPE, data), ...]"""
         v1records = self._readrecordsv1()
         v2records = self._readrecordsv2()
         if self._v1v2match(v1records, v2records):
             return v2records
         else:
             # v1 file is newer than v2 file, use it
             # we have to infer the "other" changeset of the merge
             # we cannot do better than that with v1 of the format
             mctx = self._repo[None].parents()[-1]
             v1records.append((RECORD_OTHER, mctx.hex()))
             # add place holder "other" file node information
             # nobody is using it yet so we do no need to fetch the data
             # if mctx was wrong `mctx[bits[-2]]` may fails.
             for idx, r in enumerate(v1records):
                 if r[0] == RECORD_MERGED:
                     bits = r[1].split('\0')
                     bits.insert(-2, '')
                     v1records[idx] = (r[0], '\0'.join(bits))
             return v1records
 
     def _v1v2match(self, v1records, v2records):
         oldv2 = set() # old format version of v2 record
         for rec in v2records:
             if rec[0] == RECORD_LOCAL:
                 oldv2.add(rec)
             elif rec[0] == RECORD_MERGED:
                 # drop the onode data (not contained in v1)
                 oldv2.add((RECORD_MERGED, _droponode(rec[1])))
         for rec in v1records:
             if rec not in oldv2:
                 return False
         else:
             return True
 
     def _readrecordsv1(self):
         """read on disk merge state for version 1 file
 
         returns list of record [(TYPE, data), ...]
 
         Note: the "F" data from this file are one entry short
               (no "other file node" entry)
         """
         records = []
         try:
             f = self._repo.vfs(self.statepathv1)
             for i, l in enumerate(f):
                 if i == 0:
                     records.append((RECORD_LOCAL, l[:-1]))
                 else:
                     records.append((RECORD_MERGED, l[:-1]))
             f.close()
         except IOError as err:
             if err.errno != errno.ENOENT:
                 raise
         return records
 
     def _readrecordsv2(self):
         """read on disk merge state for version 2 file
 
         This format is a list of arbitrary records of the form:
 
           [type][length][content]
 
         `type` is a single character, `length` is a 4 byte integer, and
         `content` is an arbitrary byte sequence of length `length`.
 
         Mercurial versions prior to 3.7 have a bug where if there are
         unsupported mandatory merge records, attempting to clear out the merge
         state with hg update --clean or similar aborts. The 't' record type
         works around that by writing out what those versions treat as an
         advisory record, but later versions interpret as special: the first
         character is the 'real' record type and everything onwards is the data.
 
         Returns list of records [(TYPE, data), ...]."""
         records = []
         try:
             f = self._repo.vfs(self.statepathv2)
             data = f.read()
             off = 0
             end = len(data)
             while off < end:
                 rtype = data[off:off + 1]
                 off += 1
                 length = _unpack('>I', data[off:(off + 4)])[0]
                 off += 4
                 record = data[off:(off + length)]
                 off += length
                 if rtype == RECORD_OVERRIDE:
                     rtype, record = record[0:1], record[1:]
                 records.append((rtype, record))
             f.close()
         except IOError as err:
             if err.errno != errno.ENOENT:
                 raise
         return records
 
     @util.propertycache
     def mergedriver(self):
         # protect against the following:
         # - A configures a malicious merge driver in their hgrc, then
         #   pauses the merge
         # - A edits their hgrc to remove references to the merge driver
         # - A gives a copy of their entire repo, including .hg, to B
         # - B inspects .hgrc and finds it to be clean
         # - B then continues the merge and the malicious merge driver
         #  gets invoked
         configmergedriver = self._repo.ui.config('experimental', 'mergedriver')
         if (self._readmergedriver is not None
             and self._readmergedriver != configmergedriver):
             raise error.ConfigError(
                 _("merge driver changed since merge started"),
                 hint=_("revert merge driver change or abort merge"))
 
         return configmergedriver
 
     @util.propertycache
     def localctx(self):
         if self._local is None:
             msg = "localctx accessed but self._local isn't set"
             raise error.ProgrammingError(msg)
         return self._repo[self._local]
 
     @util.propertycache
     def otherctx(self):
         if self._other is None:
             msg = "otherctx accessed but self._other isn't set"
             raise error.ProgrammingError(msg)
         return self._repo[self._other]
 
     def active(self):
         """Whether mergestate is active.
 
         Returns True if there appears to be mergestate. This is a rough proxy
         for "is a merge in progress."
         """
         # Check local variables before looking at filesystem for performance
         # reasons.
         return bool(self._local) or bool(self._state) or \
                self._repo.vfs.exists(self.statepathv1) or \
                self._repo.vfs.exists(self.statepathv2)
 
     def commit(self):
         """Write current state on disk (if necessary)"""
         if self._dirty:
             records = self._makerecords()
             self._writerecords(records)
             self._dirty = False
 
     def _makerecords(self):
         records = []
         records.append((RECORD_LOCAL, hex(self._local)))
         records.append((RECORD_OTHER, hex(self._other)))
         if self.mergedriver:
             records.append((RECORD_MERGE_DRIVER_STATE, '\0'.join([
                 self.mergedriver, self._mdstate])))
         # Write out state items. In all cases, the value of the state map entry
         # is written as the contents of the record. The record type depends on
         # the type of state that is stored, and capital-letter records are used
         # to prevent older versions of Mercurial that do not support the feature
         # from loading them.
         for filename, v in self._state.iteritems():
             if v[0] == MERGE_RECORD_DRIVER_RESOLVED:
                 # Driver-resolved merge. These are stored in 'D' records.
                 records.append((RECORD_MERGE_DRIVER_MERGE,
                                 '\0'.join([filename] + v)))
             elif v[0] in (MERGE_RECORD_UNRESOLVED_PATH,
                           MERGE_RECORD_RESOLVED_PATH):
                 # Path conflicts. These are stored in 'P' records.  The current
                 # resolution state ('pu' or 'pr') is stored within the record.
                 records.append((RECORD_PATH_CONFLICT,
                                 '\0'.join([filename] + v)))
             elif v[1] == nullhex or v[6] == nullhex:
                 # Change/Delete or Delete/Change conflicts. These are stored in
                 # 'C' records. v[1] is the local file, and is nullhex when the
                 # file is deleted locally ('dc'). v[6] is the remote file, and
                 # is nullhex when the file is deleted remotely ('cd').
                 records.append((RECORD_CHANGEDELETE_CONFLICT,
                                 '\0'.join([filename] + v)))
             else:
                 # Normal files.  These are stored in 'F' records.
                 records.append((RECORD_MERGED,
                                 '\0'.join([filename] + v)))
         for filename, extras in sorted(self._stateextras.iteritems()):
             rawextras = '\0'.join('%s\0%s' % (k, v) for k, v in
                                   extras.iteritems())
             records.append((RECORD_FILE_VALUES,
                             '%s\0%s' % (filename, rawextras)))
         if self._labels is not None:
             labels = '\0'.join(self._labels)
             records.append((RECORD_LABELS, labels))
         return records
 
     def _writerecords(self, records):
         """Write current state on disk (both v1 and v2)"""
         self._writerecordsv1(records)
         self._writerecordsv2(records)
 
     def _writerecordsv1(self, records):
         """Write current state on disk in a version 1 file"""
         f = self._repo.vfs(self.statepathv1, 'wb')
         irecords = iter(records)
         lrecords = next(irecords)
         assert lrecords[0] == RECORD_LOCAL
         f.write(hex(self._local) + '\n')
         for rtype, data in irecords:
             if rtype == RECORD_MERGED:
                 f.write('%s\n' % _droponode(data))
         f.close()
 
     def _writerecordsv2(self, records):
         """Write current state on disk in a version 2 file
 
         See the docstring for _readrecordsv2 for why we use 't'."""
         # these are the records that all version 2 clients can read
         allowlist = (RECORD_LOCAL, RECORD_OTHER, RECORD_MERGED)
         f = self._repo.vfs(self.statepathv2, 'wb')
         for key, data in records:
             assert len(key) == 1
             if key not in allowlist:
                 key, data = RECORD_OVERRIDE, '%s%s' % (key, data)
             format = '>sI%is' % len(data)
             f.write(_pack(format, key, len(data), data))
         f.close()
 
     def add(self, fcl, fco, fca, fd):
         """add a new (potentially?) conflicting file the merge state
         fcl: file context for local,
         fco: file context for remote,
         fca: file context for ancestors,
         fd:  file path of the resulting merge.
 
         note: also write the local version to the `.hg/merge` directory.
         """
         if fcl.isabsent():
             hash = nullhex
         else:
             hash = hex(hashlib.sha1(fcl.path()).digest())
             self._repo.vfs.write('merge/' + hash, fcl.data())
         self._state[fd] = [MERGE_RECORD_UNRESOLVED, hash, fcl.path(),
                            fca.path(), hex(fca.filenode()),
                            fco.path(), hex(fco.filenode()),
                            fcl.flags()]
         self._stateextras[fd] = {'ancestorlinknode': hex(fca.node())}
         self._dirty = True
 
     def addpath(self, path, frename, forigin):
         """add a new conflicting path to the merge state
         path:    the path that conflicts
         frename: the filename the conflicting file was renamed to
         forigin: origin of the file ('l' or 'r' for local/remote)
         """
         self._state[path] = [MERGE_RECORD_UNRESOLVED_PATH, frename, forigin]
         self._dirty = True
 
     def __contains__(self, dfile):
         return dfile in self._state
 
     def __getitem__(self, dfile):
         return self._state[dfile][0]
 
     def __iter__(self):
         return iter(sorted(self._state))
 
     def files(self):
         return self._state.keys()
 
     def mark(self, dfile, state):
         self._state[dfile][0] = state
         self._dirty = True
 
     def mdstate(self):
         return self._mdstate
 
     def unresolved(self):
         """Obtain the paths of unresolved files."""
 
         for f, entry in self._state.iteritems():
             if entry[0] in (MERGE_RECORD_UNRESOLVED,
                             MERGE_RECORD_UNRESOLVED_PATH):
                 yield f
 
     def driverresolved(self):
         """Obtain the paths of driver-resolved files."""
 
         for f, entry in self._state.items():
             if entry[0] == MERGE_RECORD_DRIVER_RESOLVED:
                 yield f
 
     def extras(self, filename):
         return self._stateextras.setdefault(filename, {})
 
     def _resolve(self, preresolve, dfile, wctx):
         """rerun merge process for file path `dfile`"""
         if self[dfile] in (MERGE_RECORD_RESOLVED,
                            MERGE_RECORD_DRIVER_RESOLVED):
             return True, 0
         stateentry = self._state[dfile]
         state, hash, lfile, afile, anode, ofile, onode, flags = stateentry
         octx = self._repo[self._other]
         extras = self.extras(dfile)
         anccommitnode = extras.get('ancestorlinknode')
         if anccommitnode:
             actx = self._repo[anccommitnode]
         else:
             actx = None
         fcd = self._filectxorabsent(hash, wctx, dfile)
         fco = self._filectxorabsent(onode, octx, ofile)
         # TODO: move this to filectxorabsent
         fca = self._repo.filectx(afile, fileid=anode, changectx=actx)
         # "premerge" x flags
         flo = fco.flags()
         fla = fca.flags()
         if 'x' in flags + flo + fla and 'l' not in flags + flo + fla:
             if fca.node() == nullid and flags != flo:
                 if preresolve:
                     self._repo.ui.warn(
                         _('warning: cannot merge flags for %s '
                           'without common ancestor - keeping local flags\n')
                         % afile)
             elif flags == fla:
                 flags = flo
         if preresolve:
             # restore local
             if hash != nullhex:
                 f = self._repo.vfs('merge/' + hash)
                 wctx[dfile].write(f.read(), flags)
                 f.close()
             else:
                 wctx[dfile].remove(ignoremissing=True)
             complete, r, deleted = filemerge.premerge(self._repo, wctx,
                                                       self._local, lfile, fcd,
                                                       fco, fca,
                                                       labels=self._labels)
         else:
             complete, r, deleted = filemerge.filemerge(self._repo, wctx,
                                                        self._local, lfile, fcd,
                                                        fco, fca,
                                                        labels=self._labels)
         if r is None:
             # no real conflict
             del self._state[dfile]
             self._stateextras.pop(dfile, None)
             self._dirty = True
         elif not r:
             self.mark(dfile, MERGE_RECORD_RESOLVED)
 
         if complete:
             action = None
             if deleted:
                 if fcd.isabsent():
                     # dc: local picked. Need to drop if present, which may
                     # happen on re-resolves.
                     action = ACTION_FORGET
                 else:
                     # cd: remote picked (or otherwise deleted)
                     action = ACTION_REMOVE
             else:
                 if fcd.isabsent(): # dc: remote picked
                     action = ACTION_GET
                 elif fco.isabsent(): # cd: local picked
                     if dfile in self.localctx:
                         action = ACTION_ADD_MODIFIED
                     else:
                         action = ACTION_ADD
                 # else: regular merges (no action necessary)
             self._results[dfile] = r, action
 
         return complete, r
 
     def _filectxorabsent(self, hexnode, ctx, f):
         if hexnode == nullhex:
             return filemerge.absentfilectx(ctx, f)
         else:
             return ctx[f]
 
     def preresolve(self, dfile, wctx):
         """run premerge process for dfile
 
         Returns whether the merge is complete, and the exit code."""
         return self._resolve(True, dfile, wctx)
 
     def resolve(self, dfile, wctx):
         """run merge process (assuming premerge was run) for dfile
 
         Returns the exit code of the merge."""
         return self._resolve(False, dfile, wctx)[1]
 
     def counts(self):
         """return counts for updated, merged and removed files in this
         session"""
         updated, merged, removed = 0, 0, 0
         for r, action in self._results.itervalues():
             if r is None:
                 updated += 1
             elif r == 0:
                 if action == ACTION_REMOVE:
                     removed += 1
                 else:
                     merged += 1
         return updated, merged, removed
 
     def unresolvedcount(self):
         """get unresolved count for this merge (persistent)"""
         return len(list(self.unresolved()))
 
     def actions(self):
         """return lists of actions to perform on the dirstate"""
         actions = {
             ACTION_REMOVE: [],
             ACTION_FORGET: [],
             ACTION_ADD: [],
             ACTION_ADD_MODIFIED: [],
             ACTION_GET: [],
         }
         for f, (r, action) in self._results.iteritems():
             if action is not None:
                 actions[action].append((f, None, "merge result"))
         return actions
 
     def recordactions(self):
         """record remove/add/get actions in the dirstate"""
         branchmerge = self._repo.dirstate.p2() != nullid
         recordupdates(self._repo, self.actions(), branchmerge)
 
     def queueremove(self, f):
         """queues a file to be removed from the dirstate
 
         Meant for use by custom merge drivers."""
         self._results[f] = 0, ACTION_REMOVE
 
     def queueadd(self, f):
         """queues a file to be added to the dirstate
 
         Meant for use by custom merge drivers."""
         self._results[f] = 0, ACTION_ADD
 
     def queueget(self, f):
         """queues a file to be marked modified in the dirstate
 
         Meant for use by custom merge drivers."""
         self._results[f] = 0, ACTION_GET
 
 def _getcheckunknownconfig(repo, section, name):
     config = repo.ui.config(section, name)
     valid = ['abort', 'ignore', 'warn']
     if config not in valid:
         validstr = ', '.join(["'" + v + "'" for v in valid])
         raise error.ConfigError(_("%s.%s not valid "
                                   "('%s' is none of %s)")
                                 % (section, name, config, validstr))
     return config
 
 def _checkunknownfile(repo, wctx, mctx, f, f2=None):
     if wctx.isinmemory():
         # Nothing to do in IMM because nothing in the "working copy" can be an
         # unknown file.
         #
         # Note that we should bail out here, not in ``_checkunknownfiles()``,
         # because that function does other useful work.
         return False
 
     if f2 is None:
         f2 = f
     return (repo.wvfs.audit.check(f)
         and repo.wvfs.isfileorlink(f)
         and repo.dirstate.normalize(f) not in repo.dirstate
         and mctx[f2].cmp(wctx[f]))
 
 class _unknowndirschecker(object):
     """
     Look for any unknown files or directories that may have a path conflict
     with a file.  If any path prefix of the file exists as a file or link,
     then it conflicts.  If the file itself is a directory that contains any
     file that is not tracked, then it conflicts.
 
     Returns the shortest path at which a conflict occurs, or None if there is
     no conflict.
     """
     def __init__(self):
         # A set of paths known to be good.  This prevents repeated checking of
         # dirs.  It will be updated with any new dirs that are checked and found
         # to be safe.
         self._unknowndircache = set()
 
         # A set of paths that are known to be absent.  This prevents repeated
         # checking of subdirectories that are known not to exist. It will be
         # updated with any new dirs that are checked and found to be absent.
         self._missingdircache = set()
 
     def __call__(self, repo, wctx, f):
         if wctx.isinmemory():
             # Nothing to do in IMM for the same reason as ``_checkunknownfile``.
             return False
 
         # Check for path prefixes that exist as unknown files.
         for p in reversed(list(util.finddirs(f))):
             if p in self._missingdircache:
                 return
             if p in self._unknowndircache:
                 continue
             if repo.wvfs.audit.check(p):
                 if (repo.wvfs.isfileorlink(p)
                         and repo.dirstate.normalize(p) not in repo.dirstate):
                     return p
                 if not repo.wvfs.lexists(p):
                     self._missingdircache.add(p)
                     return
                 self._unknowndircache.add(p)
 
         # Check if the file conflicts with a directory containing unknown files.
         if repo.wvfs.audit.check(f) and repo.wvfs.isdir(f):
             # Does the directory contain any files that are not in the dirstate?
             for p, dirs, files in repo.wvfs.walk(f):
                 for fn in files:
                     relf = util.pconvert(repo.wvfs.reljoin(p, fn))
                     relf = repo.dirstate.normalize(relf, isknown=True)
                     if relf not in repo.dirstate:
                         return f
         return None
 
 def _checkunknownfiles(repo, wctx, mctx, force, actions, mergeforce):
     """
     Considers any actions that care about the presence of conflicting unknown
     files. For some actions, the result is to abort; for others, it is to
     choose a different action.
     """
     fileconflicts = set()
     pathconflicts = set()
     warnconflicts = set()
     abortconflicts = set()
     unknownconfig = _getcheckunknownconfig(repo, 'merge', 'checkunknown')
     ignoredconfig = _getcheckunknownconfig(repo, 'merge', 'checkignored')
     pathconfig = repo.ui.configbool('experimental', 'merge.checkpathconflicts')
     if not force:
         def collectconflicts(conflicts, config):
             if config == 'abort':
                 abortconflicts.update(conflicts)
             elif config == 'warn':
                 warnconflicts.update(conflicts)
 
         checkunknowndirs = _unknowndirschecker()
         for f, (m, args, msg) in actions.iteritems():
             if m in (ACTION_CREATED, ACTION_DELETED_CHANGED):
                 if _checkunknownfile(repo, wctx, mctx, f):
                     fileconflicts.add(f)
                 elif pathconfig and f not in wctx:
                     path = checkunknowndirs(repo, wctx, f)
                     if path is not None:
                         pathconflicts.add(path)
             elif m == ACTION_LOCAL_DIR_RENAME_GET:
                 if _checkunknownfile(repo, wctx, mctx, f, args[0]):
                     fileconflicts.add(f)
 
         allconflicts = fileconflicts | pathconflicts
         ignoredconflicts = set([c for c in allconflicts
                                 if repo.dirstate._ignore(c)])
         unknownconflicts = allconflicts - ignoredconflicts
         collectconflicts(ignoredconflicts, ignoredconfig)
         collectconflicts(unknownconflicts, unknownconfig)
     else:
         for f, (m, args, msg) in actions.iteritems():
             if m == ACTION_CREATED_MERGE:
                 fl2, anc = args
                 different = _checkunknownfile(repo, wctx, mctx, f)
                 if repo.dirstate._ignore(f):
                     config = ignoredconfig
                 else:
                     config = unknownconfig
 
                 # The behavior when force is True is described by this table:
                 #  config  different  mergeforce  |    action    backup
                 #    *         n          *       |      get        n
                 #    *         y          y       |     merge       -
                 #   abort      y          n       |     merge       -   (1)
                 #   warn       y          n       |  warn + get     y
                 #  ignore      y          n       |      get        y
                 #
                 # (1) this is probably the wrong behavior here -- we should
                 #     probably abort, but some actions like rebases currently
                 #     don't like an abort happening in the middle of
                 #     merge.update.
                 if not different:
                     actions[f] = (ACTION_GET, (fl2, False), 'remote created')
                 elif mergeforce or config == 'abort':
                     actions[f] = (ACTION_MERGE, (f, f, None, False, anc),
                                   'remote differs from untracked local')
                 elif config == 'abort':
                     abortconflicts.add(f)
                 else:
                     if config == 'warn':
                         warnconflicts.add(f)
                     actions[f] = (ACTION_GET, (fl2, True), 'remote created')
 
     for f in sorted(abortconflicts):
         warn = repo.ui.warn
         if f in pathconflicts:
             if repo.wvfs.isfileorlink(f):
                 warn(_("%s: untracked file conflicts with directory\n") % f)
             else:
                 warn(_("%s: untracked directory conflicts with file\n") % f)
         else:
             warn(_("%s: untracked file differs\n") % f)
     if abortconflicts:
         raise error.Abort(_("untracked files in working directory "
                             "differ from files in requested revision"))
 
     for f in sorted(warnconflicts):
         if repo.wvfs.isfileorlink(f):
             repo.ui.warn(_("%s: replacing untracked file\n") % f)
         else:
             repo.ui.warn(_("%s: replacing untracked files in directory\n") % f)
 
     for f, (m, args, msg) in actions.iteritems():
         if m == ACTION_CREATED:
             backup = (f in fileconflicts or f in pathconflicts or
                       any(p in pathconflicts for p in util.finddirs(f)))
             flags, = args
             actions[f] = (ACTION_GET, (flags, backup), msg)
 
 def _forgetremoved(wctx, mctx, branchmerge):
     """
     Forget removed files
 
     If we're jumping between revisions (as opposed to merging), and if
     neither the working directory nor the target rev has the file,
     then we need to remove it from the dirstate, to prevent the
     dirstate from listing the file when it is no longer in the
     manifest.
 
     If we're merging, and the other revision has removed a file
     that is not present in the working directory, we need to mark it
     as removed.
     """
 
     actions = {}
     m = ACTION_FORGET
     if branchmerge:
         m = ACTION_REMOVE
     for f in wctx.deleted():
         if f not in mctx:
             actions[f] = m, None, "forget deleted"
 
     if not branchmerge:
         for f in wctx.removed():
             if f not in mctx:
                 actions[f] = ACTION_FORGET, None, "forget removed"
 
     return actions
 
 def _checkcollision(repo, wmf, actions):
     """
     Check for case-folding collisions.
     """
 
     # If the repo is narrowed, filter out files outside the narrowspec.
     narrowmatch = repo.narrowmatch()
     if not narrowmatch.always():
         wmf = wmf.matches(narrowmatch)
         if actions:
             narrowactions = {}
             for m, actionsfortype in actions.iteritems():
                 narrowactions[m] = []
                 for (f, args, msg) in actionsfortype:
                     if narrowmatch(f):
                         narrowactions[m].append((f, args, msg))
             actions = narrowactions
 
     # build provisional merged manifest up
     pmmf = set(wmf)
 
     if actions:
         # KEEP and EXEC are no-op
         for m in (ACTION_ADD, ACTION_ADD_MODIFIED, ACTION_FORGET, ACTION_GET,
                   ACTION_CHANGED_DELETED, ACTION_DELETED_CHANGED):
             for f, args, msg in actions[m]:
                 pmmf.add(f)
         for f, args, msg in actions[ACTION_REMOVE]:
             pmmf.discard(f)
         for f, args, msg in actions[ACTION_DIR_RENAME_MOVE_LOCAL]:
             f2, flags = args
             pmmf.discard(f2)
             pmmf.add(f)
         for f, args, msg in actions[ACTION_LOCAL_DIR_RENAME_GET]:
             pmmf.add(f)
         for f, args, msg in actions[ACTION_MERGE]:
             f1, f2, fa, move, anc = args
             if move:
                 pmmf.discard(f1)
             pmmf.add(f)
 
     # check case-folding collision in provisional merged manifest
     foldmap = {}
     for f in pmmf:
         fold = util.normcase(f)
         if fold in foldmap:
             raise error.Abort(_("case-folding collision between %s and %s")
                              % (f, foldmap[fold]))
         foldmap[fold] = f
 
     # check case-folding of directories
     foldprefix = unfoldprefix = lastfull = ''
     for fold, f in sorted(foldmap.items()):
         if fold.startswith(foldprefix) and not f.startswith(unfoldprefix):
             # the folded prefix matches but actual casing is different
             raise error.Abort(_("case-folding collision between "
                                 "%s and directory of %s") % (lastfull, f))
         foldprefix = fold + '/'
         unfoldprefix = f + '/'
         lastfull = f
 
 def driverpreprocess(repo, ms, wctx, labels=None):
     """run the preprocess step of the merge driver, if any
 
     This is currently not implemented -- it's an extension point."""
     return True
 
 def driverconclude(repo, ms, wctx, labels=None):
     """run the conclude step of the merge driver, if any
 
     This is currently not implemented -- it's an extension point."""
     return True
 
 def _filesindirs(repo, manifest, dirs):
     """
     Generator that yields pairs of all the files in the manifest that are found
     inside the directories listed in dirs, and which directory they are found
     in.
     """
     for f in manifest:
         for p in util.finddirs(f):
             if p in dirs:
                 yield f, p
                 break
 
 def checkpathconflicts(repo, wctx, mctx, actions):
     """
     Check if any actions introduce path conflicts in the repository, updating
     actions to record or handle the path conflict accordingly.
     """
     mf = wctx.manifest()
 
     # The set of local files that conflict with a remote directory.
     localconflicts = set()
 
     # The set of directories that conflict with a remote file, and so may cause
     # conflicts if they still contain any files after the merge.
     remoteconflicts = set()
 
     # The set of directories that appear as both a file and a directory in the
     # remote manifest.  These indicate an invalid remote manifest, which
     # can't be updated to cleanly.
     invalidconflicts = set()
 
     # The set of directories that contain files that are being created.
     createdfiledirs = set()
 
     # The set of files deleted by all the actions.
     deletedfiles = set()
 
     for f, (m, args, msg) in actions.items():
         if m in (ACTION_CREATED, ACTION_DELETED_CHANGED, ACTION_MERGE,
                  ACTION_CREATED_MERGE):
             # This action may create a new local file.
             createdfiledirs.update(util.finddirs(f))
             if mf.hasdir(f):
                 # The file aliases a local directory.  This might be ok if all
                 # the files in the local directory are being deleted.  This
                 # will be checked once we know what all the deleted files are.
                 remoteconflicts.add(f)
         # Track the names of all deleted files.
         if m == ACTION_REMOVE:
             deletedfiles.add(f)
         if m == ACTION_MERGE:
             f1, f2, fa, move, anc = args
             if move:
                 deletedfiles.add(f1)
         if m == ACTION_DIR_RENAME_MOVE_LOCAL:
             f2, flags = args
             deletedfiles.add(f2)
 
     # Check all directories that contain created files for path conflicts.
     for p in createdfiledirs:
         if p in mf:
             if p in mctx:
                 # A file is in a directory which aliases both a local
                 # and a remote file.  This is an internal inconsistency
                 # within the remote manifest.
                 invalidconflicts.add(p)
             else:
                 # A file is in a directory which aliases a local file.
                 # We will need to rename the local file.
                 localconflicts.add(p)
         if p in actions and actions[p][0] in (ACTION_CREATED,
                                               ACTION_DELETED_CHANGED,
                                               ACTION_MERGE,
                                               ACTION_CREATED_MERGE):
             # The file is in a directory which aliases a remote file.
             # This is an internal inconsistency within the remote
             # manifest.
             invalidconflicts.add(p)
 
     # Rename all local conflicting files that have not been deleted.
     for p in localconflicts:
         if p not in deletedfiles:
             ctxname = bytes(wctx).rstrip('+')
             pnew = util.safename(p, ctxname, wctx, set(actions.keys()))
             actions[pnew] = (ACTION_PATH_CONFLICT_RESOLVE, (p,),
                              'local path conflict')
             actions[p] = (ACTION_PATH_CONFLICT, (pnew, 'l'),
                           'path conflict')
 
     if remoteconflicts:
         # Check if all files in the conflicting directories have been removed.
         ctxname = bytes(mctx).rstrip('+')
         for f, p in _filesindirs(repo, mf, remoteconflicts):
             if f not in deletedfiles:
                 m, args, msg = actions[p]
                 pnew = util.safename(p, ctxname, wctx, set(actions.keys()))
                 if m in (ACTION_DELETED_CHANGED, ACTION_MERGE):
                     # Action was merge, just update target.
                     actions[pnew] = (m, args, msg)
                 else:
                     # Action was create, change to renamed get action.
                     fl = args[0]
                     actions[pnew] = (ACTION_LOCAL_DIR_RENAME_GET, (p, fl),
                                      'remote path conflict')
                 actions[p] = (ACTION_PATH_CONFLICT, (pnew, ACTION_REMOVE),
                               'path conflict')
                 remoteconflicts.remove(p)
                 break
 
     if invalidconflicts:
         for p in invalidconflicts:
             repo.ui.warn(_("%s: is both a file and a directory\n") % p)
         raise error.Abort(_("destination manifest contains path conflicts"))
 
 def _filternarrowactions(narrowmatch, branchmerge, actions):
     """
     Filters out actions that can ignored because the repo is narrowed.
 
     Raise an exception if the merge cannot be completed because the repo is
     narrowed.
     """
     nooptypes = set(['k']) # TODO: handle with nonconflicttypes
     nonconflicttypes = set('a am c cm f g r e'.split())
     # We mutate the items in the dict during iteration, so iterate
     # over a copy.
     for f, action in list(actions.items()):
         if narrowmatch(f):
             pass
         elif not branchmerge:
             del actions[f] # just updating, ignore changes outside clone
         elif action[0] in nooptypes:
             del actions[f] # merge does not affect file
         elif action[0] in nonconflicttypes:
             raise error.Abort(_('merge affects file \'%s\' outside narrow, '
                                 'which is not yet supported') % f,
                               hint=_('merging in the other direction '
                                      'may work'))
         else:
             raise error.Abort(_('conflict in file \'%s\' is outside '
                                 'narrow clone') % f)
 
 def manifestmerge(repo, wctx, p2, pa, branchmerge, force, matcher,
                   acceptremote, followcopies, forcefulldiff=False):
     """
     Merge wctx and p2 with ancestor pa and generate merge action list
 
     branchmerge and force are as passed in to update
     matcher = matcher to filter file lists
     acceptremote = accept the incoming changes without prompting
     """
     if matcher is not None and matcher.always():
         matcher = None
 
     copy, movewithdir, diverge, renamedelete, dirmove = {}, {}, {}, {}, {}
 
     # manifests fetched in order are going to be faster, so prime the caches
     [x.manifest() for x in
      sorted(wctx.parents() + [p2, pa], key=scmutil.intrev)]
 
     if followcopies:
         ret = copies.mergecopies(repo, wctx, p2, pa)
         copy, movewithdir, diverge, renamedelete, dirmove = ret
 
     boolbm = pycompat.bytestr(bool(branchmerge))
     boolf = pycompat.bytestr(bool(force))
     boolm = pycompat.bytestr(bool(matcher))
     repo.ui.note(_("resolving manifests\n"))
     repo.ui.debug(" branchmerge: %s, force: %s, partial: %s\n"
                   % (boolbm, boolf, boolm))
     repo.ui.debug(" ancestor: %s, local: %s, remote: %s\n" % (pa, wctx, p2))
 
     m1, m2, ma = wctx.manifest(), p2.manifest(), pa.manifest()
     copied = set(copy.values())
     copied.update(movewithdir.values())
 
-    if '.hgsubstate' in m1:
-        # check whether sub state is modified
+    if '.hgsubstate' in m1 and wctx.rev() is None:
+        # Check whether sub state is modified, and overwrite the manifest
+        # to flag the change. If wctx is a committed revision, we shouldn't
+        # care for the dirty state of the working directory.
         if any(wctx.sub(s).dirty() for s in wctx.substate):
             m1['.hgsubstate'] = modifiednodeid
 
     # Don't use m2-vs-ma optimization if:
     # - ma is the same as m1 or m2, which we're just going to diff again later
     # - The caller specifically asks for a full diff, which is useful during bid
     #   merge.
     if (pa not in ([wctx, p2] + wctx.parents()) and not forcefulldiff):
         # Identify which files are relevant to the merge, so we can limit the
         # total m1-vs-m2 diff to just those files. This has significant
         # performance benefits in large repositories.
         relevantfiles = set(ma.diff(m2).keys())
 
         # For copied and moved files, we need to add the source file too.
         for copykey, copyvalue in copy.iteritems():
             if copyvalue in relevantfiles:
                 relevantfiles.add(copykey)
         for movedirkey in movewithdir:
             relevantfiles.add(movedirkey)
         filesmatcher = scmutil.matchfiles(repo, relevantfiles)
         matcher = matchmod.intersectmatchers(matcher, filesmatcher)
 
     diff = m1.diff(m2, match=matcher)
 
     if matcher is None:
         matcher = matchmod.always('', '')
 
     actions = {}
     for f, ((n1, fl1), (n2, fl2)) in diff.iteritems():
         if n1 and n2: # file exists on both local and remote side
             if f not in ma:
                 fa = copy.get(f, None)
                 if fa is not None:
                     actions[f] = (ACTION_MERGE, (f, f, fa, False, pa.node()),
                                   'both renamed from %s' % fa)
                 else:
                     actions[f] = (ACTION_MERGE, (f, f, None, False, pa.node()),
                                   'both created')
             else:
                 a = ma[f]
                 fla = ma.flags(f)
                 nol = 'l' not in fl1 + fl2 + fla
                 if n2 == a and fl2 == fla:
                     actions[f] = (ACTION_KEEP, (), 'remote unchanged')
                 elif n1 == a and fl1 == fla: # local unchanged - use remote
                     if n1 == n2: # optimization: keep local content
                         actions[f] = (ACTION_EXEC, (fl2,), 'update permissions')
                     else:
                         actions[f] = (ACTION_GET, (fl2, False),
                                       'remote is newer')
                 elif nol and n2 == a: # remote only changed 'x'
                     actions[f] = (ACTION_EXEC, (fl2,), 'update permissions')
                 elif nol and n1 == a: # local only changed 'x'
                     actions[f] = (ACTION_GET, (fl1, False), 'remote is newer')
                 else: # both changed something
                     actions[f] = (ACTION_MERGE, (f, f, f, False, pa.node()),
                                   'versions differ')
         elif n1: # file exists only on local side
             if f in copied:
                 pass # we'll deal with it on m2 side
             elif f in movewithdir: # directory rename, move local
                 f2 = movewithdir[f]
                 if f2 in m2:
                     actions[f2] = (ACTION_MERGE, (f, f2, None, True, pa.node()),
                                    'remote directory rename, both created')
                 else:
                     actions[f2] = (ACTION_DIR_RENAME_MOVE_LOCAL, (f, fl1),
                                    'remote directory rename - move from %s' % f)
             elif f in copy:
                 f2 = copy[f]
                 actions[f] = (ACTION_MERGE, (f, f2, f2, False, pa.node()),
                               'local copied/moved from %s' % f2)
             elif f in ma: # clean, a different, no remote
                 if n1 != ma[f]:
                     if acceptremote:
                         actions[f] = (ACTION_REMOVE, None, 'remote delete')
                     else:
                         actions[f] = (ACTION_CHANGED_DELETED,
                                       (f, None, f, False, pa.node()),
                                       'prompt changed/deleted')
                 elif n1 == addednodeid:
                     # This extra 'a' is added by working copy manifest to mark
                     # the file as locally added. We should forget it instead of
                     # deleting it.
                     actions[f] = (ACTION_FORGET, None, 'remote deleted')
                 else:
                     actions[f] = (ACTION_REMOVE, None, 'other deleted')
         elif n2: # file exists only on remote side
             if f in copied:
                 pass # we'll deal with it on m1 side
             elif f in movewithdir:
                 f2 = movewithdir[f]
                 if f2 in m1:
                     actions[f2] = (ACTION_MERGE,
                                    (f2, f, None, False, pa.node()),
                                    'local directory rename, both created')
                 else:
                     actions[f2] = (ACTION_LOCAL_DIR_RENAME_GET, (f, fl2),
                                    'local directory rename - get from %s' % f)
             elif f in copy:
                 f2 = copy[f]
                 if f2 in m2:
                     actions[f] = (ACTION_MERGE, (f2, f, f2, False, pa.node()),
                                   'remote copied from %s' % f2)
                 else:
                     actions[f] = (ACTION_MERGE, (f2, f, f2, True, pa.node()),
                                   'remote moved from %s' % f2)
             elif f not in ma:
                 # local unknown, remote created: the logic is described by the
                 # following table:
                 #
                 # force  branchmerge  different  |  action
                 #   n         *           *      |   create
                 #   y         n           *      |   create
                 #   y         y           n      |   create
                 #   y         y           y      |   merge
                 #
                 # Checking whether the files are different is expensive, so we
                 # don't do that when we can avoid it.
                 if not force:
                     actions[f] = (ACTION_CREATED, (fl2,), 'remote created')
                 elif not branchmerge:
                     actions[f] = (ACTION_CREATED, (fl2,), 'remote created')
                 else:
                     actions[f] = (ACTION_CREATED_MERGE, (fl2, pa.node()),
                                   'remote created, get or merge')
             elif n2 != ma[f]:
                 df = None
                 for d in dirmove:
                     if f.startswith(d):
                         # new file added in a directory that was moved
                         df = dirmove[d] + f[len(d):]
                         break
                 if df is not None and df in m1:
                     actions[df] = (ACTION_MERGE, (df, f, f, False, pa.node()),
                                    'local directory rename - respect move '
                                    'from %s' % f)
                 elif acceptremote:
                     actions[f] = (ACTION_CREATED, (fl2,), 'remote recreating')
                 else:
                     actions[f] = (ACTION_DELETED_CHANGED,
                                   (None, f, f, False, pa.node()),
                                   'prompt deleted/changed')
 
     if repo.ui.configbool('experimental', 'merge.checkpathconflicts'):
         # If we are merging, look for path conflicts.
         checkpathconflicts(repo, wctx, p2, actions)
 
     narrowmatch = repo.narrowmatch()
     if not narrowmatch.always():
         # Updates "actions" in place
         _filternarrowactions(narrowmatch, branchmerge, actions)
 
     return actions, diverge, renamedelete
 
 def _resolvetrivial(repo, wctx, mctx, ancestor, actions):
     """Resolves false conflicts where the nodeid changed but the content
        remained the same."""
     # We force a copy of actions.items() because we're going to mutate
     # actions as we resolve trivial conflicts.
     for f, (m, args, msg) in list(actions.items()):
         if (m == ACTION_CHANGED_DELETED and f in ancestor
             and not wctx[f].cmp(ancestor[f])):
             # local did change but ended up with same content
             actions[f] = ACTION_REMOVE, None, 'prompt same'
         elif (m == ACTION_DELETED_CHANGED and f in ancestor
               and not mctx[f].cmp(ancestor[f])):
             # remote did change but ended up with same content
             del actions[f] # don't get = keep local deleted
 
 def calculateupdates(repo, wctx, mctx, ancestors, branchmerge, force,
                      acceptremote, followcopies, matcher=None,
                      mergeforce=False):
     """Calculate the actions needed to merge mctx into wctx using ancestors"""
     # Avoid cycle.
     from . import sparse
 
     if len(ancestors) == 1: # default
         actions, diverge, renamedelete = manifestmerge(
             repo, wctx, mctx, ancestors[0], branchmerge, force, matcher,
             acceptremote, followcopies)
         _checkunknownfiles(repo, wctx, mctx, force, actions, mergeforce)
 
     else: # only when merge.preferancestor=* - the default
         repo.ui.note(
             _("note: merging %s and %s using bids from ancestors %s\n") %
             (wctx, mctx, _(' and ').join(pycompat.bytestr(anc)
                                             for anc in ancestors)))
 
         # Call for bids
         fbids = {} # mapping filename to bids (action method to list af actions)
         diverge, renamedelete = None, None
         for ancestor in ancestors:
             repo.ui.note(_('\ncalculating bids for ancestor %s\n') % ancestor)
             actions, diverge1, renamedelete1 = manifestmerge(
                 repo, wctx, mctx, ancestor, branchmerge, force, matcher,
                 acceptremote, followcopies, forcefulldiff=True)
             _checkunknownfiles(repo, wctx, mctx, force, actions, mergeforce)
 
             # Track the shortest set of warning on the theory that bid
             # merge will correctly incorporate more information
             if diverge is None or len(diverge1) < len(diverge):
                 diverge = diverge1
             if renamedelete is None or len(renamedelete) < len(renamedelete1):
                 renamedelete = renamedelete1
 
             for f, a in sorted(actions.iteritems()):
                 m, args, msg = a
                 repo.ui.debug(' %s: %s -> %s\n' % (f, msg, m))
                 if f in fbids:
                     d = fbids[f]
                     if m in d:
                         d[m].append(a)
                     else:
                         d[m] = [a]
                 else:
                     fbids[f] = {m: [a]}
 
         # Pick the best bid for each file
         repo.ui.note(_('\nauction for merging merge bids\n'))
         actions = {}
         dms = [] # filenames that have dm actions
         for f, bids in sorted(fbids.items()):
             # bids is a mapping from action method to list af actions
             # Consensus?
             if len(bids) == 1: # all bids are the same kind of method
                 m, l = list(bids.items())[0]
                 if all(a == l[0] for a in l[1:]): # len(bids) is > 1
                     repo.ui.note(_(" %s: consensus for %s\n") % (f, m))
                     actions[f] = l[0]
                     if m == ACTION_DIR_RENAME_MOVE_LOCAL:
                         dms.append(f)
                     continue
             # If keep is an option, just do it.
             if ACTION_KEEP in bids:
                 repo.ui.note(_(" %s: picking 'keep' action\n") % f)
                 actions[f] = bids[ACTION_KEEP][0]
                 continue
             # If there are gets and they all agree [how could they not?], do it.
             if ACTION_GET in bids:
                 ga0 = bids[ACTION_GET][0]
                 if all(a == ga0 for a in bids[ACTION_GET][1:]):
                     repo.ui.note(_(" %s: picking 'get' action\n") % f)
                     actions[f] = ga0
                     continue
             # TODO: Consider other simple actions such as mode changes
             # Handle inefficient democrazy.
             repo.ui.note(_(' %s: multiple bids for merge action:\n') % f)
             for m, l in sorted(bids.items()):
                 for _f, args, msg in l:
                     repo.ui.note('  %s -> %s\n' % (msg, m))
             # Pick random action. TODO: Instead, prompt user when resolving
             m, l = list(bids.items())[0]
             repo.ui.warn(_(' %s: ambiguous merge - picked %s action\n') %
                          (f, m))
             actions[f] = l[0]
             if m == ACTION_DIR_RENAME_MOVE_LOCAL:
                 dms.append(f)
             continue
         # Work around 'dm' that can cause multiple actions for the same file
         for f in dms:
             dm, (f0, flags), msg = actions[f]
             assert dm == ACTION_DIR_RENAME_MOVE_LOCAL, dm
             if f0 in actions and actions[f0][0] == ACTION_REMOVE:
                 # We have one bid for removing a file and another for moving it.
                 # These two could be merged as first move and then delete ...
                 # but instead drop moving and just delete.
                 del actions[f]
         repo.ui.note(_('end of auction\n\n'))
 
     _resolvetrivial(repo, wctx, mctx, ancestors[0], actions)
 
     if wctx.rev() is None:
         fractions = _forgetremoved(wctx, mctx, branchmerge)
         actions.update(fractions)
 
     prunedactions = sparse.filterupdatesactions(repo, wctx, mctx, branchmerge,
                                                 actions)
 
     return prunedactions, diverge, renamedelete
 
 def _getcwd():
     try:
         return pycompat.getcwd()
     except OSError as err:
         if err.errno == errno.ENOENT:
             return None
         raise
 
 def batchremove(repo, wctx, actions):
     """apply removes to the working directory
 
     yields tuples for progress updates
     """
     verbose = repo.ui.verbose
     cwd = _getcwd()
     i = 0
     for f, args, msg in actions:
         repo.ui.debug(" %s: %s -> r\n" % (f, msg))
         if verbose:
             repo.ui.note(_("removing %s\n") % f)
         wctx[f].audit()
         try:
             wctx[f].remove(ignoremissing=True)
         except OSError as inst:
             repo.ui.warn(_("update failed to remove %s: %s!\n") %
                          (f, inst.strerror))
         if i == 100:
             yield i, f
             i = 0
         i += 1
     if i > 0:
         yield i, f
 
     if cwd and not _getcwd():
         # cwd was removed in the course of removing files; print a helpful
         # warning.
         repo.ui.warn(_("current directory was removed\n"
                        "(consider changing to repo root: %s)\n") % repo.root)
 
 def batchget(repo, mctx, wctx, actions):
     """apply gets to the working directory
 
     mctx is the context to get from
 
     yields tuples for progress updates
     """
     verbose = repo.ui.verbose
     fctx = mctx.filectx
     ui = repo.ui
     i = 0
     with repo.wvfs.backgroundclosing(ui, expectedcount=len(actions)):
         for f, (flags, backup), msg in actions:
             repo.ui.debug(" %s: %s -> g\n" % (f, msg))
             if verbose:
                 repo.ui.note(_("getting %s\n") % f)
 
             if backup:
                 # If a file or directory exists with the same name, back that
                 # up.  Otherwise, look to see if there is a file that conflicts
                 # with a directory this file is in, and if so, back that up.
                 absf = repo.wjoin(f)
                 if not repo.wvfs.lexists(f):
                     for p in util.finddirs(f):
                         if repo.wvfs.isfileorlink(p):
                             absf = repo.wjoin(p)
                             break
                 orig = scmutil.origpath(ui, repo, absf)
                 if repo.wvfs.lexists(absf):
                     util.rename(absf, orig)
             wctx[f].clearunknown()
             atomictemp = ui.configbool("experimental", "update.atomic-file")
             wctx[f].write(fctx(f).data(), flags, backgroundclose=True,
                           atomictemp=atomictemp)
             if i == 100:
                 yield i, f
                 i = 0
             i += 1
     if i > 0:
         yield i, f
 
 def _prefetchfiles(repo, ctx, actions):
     """Invoke ``scmutil.prefetchfiles()`` for the files relevant to the dict
     of merge actions.  ``ctx`` is the context being merged in."""
 
     # Skipping 'a', 'am', 'f', 'r', 'dm', 'e', 'k', 'p' and 'pr', because they
     # don't touch the context to be merged in.  'cd' is skipped, because
     # changed/deleted never resolves to something from the remote side.
     oplist = [actions[a] for a in (ACTION_GET, ACTION_DELETED_CHANGED,
                                    ACTION_LOCAL_DIR_RENAME_GET, ACTION_MERGE)]
     prefetch = scmutil.prefetchfiles
     matchfiles = scmutil.matchfiles
     prefetch(repo, [ctx.rev()],
              matchfiles(repo,
                         [f for sublist in oplist for f, args, msg in sublist]))
 
 @attr.s(frozen=True)
 class updateresult(object):
     updatedcount = attr.ib()
     mergedcount = attr.ib()
     removedcount = attr.ib()
     unresolvedcount = attr.ib()
 
     def isempty(self):
         return (not self.updatedcount and not self.mergedcount
                 and not self.removedcount and not self.unresolvedcount)
 
 def applyupdates(repo, actions, wctx, mctx, overwrite, labels=None):
     """apply the merge action list to the working directory
 
     wctx is the working copy context
     mctx is the context to be merged into the working copy
 
     Return a tuple of counts (updated, merged, removed, unresolved) that
     describes how many files were affected by the update.
     """
 
     _prefetchfiles(repo, mctx, actions)
 
     updated, merged, removed = 0, 0, 0
     ms = mergestate.clean(repo, wctx.p1().node(), mctx.node(), labels)
     moves = []
     for m, l in actions.items():
         l.sort()
 
     # 'cd' and 'dc' actions are treated like other merge conflicts
     mergeactions = sorted(actions[ACTION_CHANGED_DELETED])
     mergeactions.extend(sorted(actions[ACTION_DELETED_CHANGED]))
     mergeactions.extend(actions[ACTION_MERGE])
     for f, args, msg in mergeactions:
         f1, f2, fa, move, anc = args
         if f == '.hgsubstate': # merged internally
             continue
         if f1 is None:
             fcl = filemerge.absentfilectx(wctx, fa)
         else:
             repo.ui.debug(" preserving %s for resolve of %s\n" % (f1, f))
             fcl = wctx[f1]
         if f2 is None:
             fco = filemerge.absentfilectx(mctx, fa)
         else:
             fco = mctx[f2]
         actx = repo[anc]
         if fa in actx:
             fca = actx[fa]
         else:
             # TODO: move to absentfilectx
             fca = repo.filectx(f1, fileid=nullrev)
         ms.add(fcl, fco, fca, f)
         if f1 != f and move:
             moves.append(f1)
 
     # remove renamed files after safely stored
     for f in moves:
         if wctx[f].lexists():
             repo.ui.debug("removing %s\n" % f)
             wctx[f].audit()
             wctx[f].remove()
 
     numupdates = sum(len(l) for m, l in actions.items()
                      if m != ACTION_KEEP)
     progress = repo.ui.makeprogress(_('updating'), unit=_('files'),
                                     total=numupdates)
 
     if [a for a in actions[ACTION_REMOVE] if a[0] == '.hgsubstate']:
         subrepoutil.submerge(repo, wctx, mctx, wctx, overwrite, labels)
 
     # record path conflicts
     for f, args, msg in actions[ACTION_PATH_CONFLICT]:
         f1, fo = args
         s = repo.ui.status
         s(_("%s: path conflict - a file or link has the same name as a "
             "directory\n") % f)
         if fo == 'l':
             s(_("the local file has been renamed to %s\n") % f1)
         else:
             s(_("the remote file has been renamed to %s\n") % f1)
         s(_("resolve manually then use 'hg resolve --mark %s'\n") % f)
         ms.addpath(f, f1, fo)
         progress.increment(item=f)
 
     # When merging in-memory, we can't support worker processes, so set the
     # per-item cost at 0 in that case.
     cost = 0 if wctx.isinmemory() else 0.001
 
     # remove in parallel (must come before resolving path conflicts and getting)
     prog = worker.worker(repo.ui, cost, batchremove, (repo, wctx),
                          actions[ACTION_REMOVE])
     for i, item in prog:
         progress.increment(step=i, item=item)
     removed = len(actions[ACTION_REMOVE])
 
     # resolve path conflicts (must come before getting)
     for f, args, msg in actions[ACTION_PATH_CONFLICT_RESOLVE]:
         repo.ui.debug(" %s: %s -> pr\n" % (f, msg))
         f0, = args
         if wctx[f0].lexists():
             repo.ui.note(_("moving %s to %s\n") % (f0, f))
             wctx[f].audit()
             wctx[f].write(wctx.filectx(f0).data(), wctx.filectx(f0).flags())
             wctx[f0].remove()
         progress.increment(item=f)
 
     # get in parallel
     prog = worker.worker(repo.ui, cost, batchget, (repo, mctx, wctx),
                          actions[ACTION_GET])
     for i, item in prog:
         progress.increment(step=i, item=item)
     updated = len(actions[ACTION_GET])
 
     if [a for a in actions[ACTION_GET] if a[0] == '.hgsubstate']:
         subrepoutil.submerge(repo, wctx, mctx, wctx, overwrite, labels)
 
     # forget (manifest only, just log it) (must come first)
     for f, args, msg in actions[ACTION_FORGET]:
         repo.ui.debug(" %s: %s -> f\n" % (f, msg))
         progress.increment(item=f)
 
     # re-add (manifest only, just log it)
     for f, args, msg in actions[ACTION_ADD]:
         repo.ui.debug(" %s: %s -> a\n" % (f, msg))
         progress.increment(item=f)
 
     # re-add/mark as modified (manifest only, just log it)
     for f, args, msg in actions[ACTION_ADD_MODIFIED]:
         repo.ui.debug(" %s: %s -> am\n" % (f, msg))
         progress.increment(item=f)
 
     # keep (noop, just log it)
     for f, args, msg in actions[ACTION_KEEP]:
         repo.ui.debug(" %s: %s -> k\n" % (f, msg))
         # no progress
 
     # directory rename, move local
     for f, args, msg in actions[ACTION_DIR_RENAME_MOVE_LOCAL]:
         repo.ui.debug(" %s: %s -> dm\n" % (f, msg))
         progress.increment(item=f)
         f0, flags = args
         repo.ui.note(_("moving %s to %s\n") % (f0, f))
         wctx[f].audit()
         wctx[f].write(wctx.filectx(f0).data(), flags)
         wctx[f0].remove()
         updated += 1
 
     # local directory rename, get
     for f, args, msg in actions[ACTION_LOCAL_DIR_RENAME_GET]:
         repo.ui.debug(" %s: %s -> dg\n" % (f, msg))
         progress.increment(item=f)
         f0, flags = args
         repo.ui.note(_("getting %s to %s\n") % (f0, f))
         wctx[f].write(mctx.filectx(f0).data(), flags)
         updated += 1
 
     # exec
     for f, args, msg in actions[ACTION_EXEC]:
         repo.ui.debug(" %s: %s -> e\n" % (f, msg))
         progress.increment(item=f)
         flags, = args
         wctx[f].audit()
         wctx[f].setflags('l' in flags, 'x' in flags)
         updated += 1
 
     # the ordering is important here -- ms.mergedriver will raise if the merge
     # driver has changed, and we want to be able to bypass it when overwrite is
     # True
     usemergedriver = not overwrite and mergeactions and ms.mergedriver
 
     if usemergedriver:
         if wctx.isinmemory():
             raise error.InMemoryMergeConflictsError("in-memory merge does not "
                                                     "support mergedriver")
         ms.commit()
         proceed = driverpreprocess(repo, ms, wctx, labels=labels)
         # the driver might leave some files unresolved
         unresolvedf = set(ms.unresolved())
         if not proceed:
             # XXX setting unresolved to at least 1 is a hack to make sure we
             # error out
             return updateresult(updated, merged, removed,
                                 max(len(unresolvedf), 1))
         newactions = []
         for f, args, msg in mergeactions:
             if f in unresolvedf:
                 newactions.append((f, args, msg))
         mergeactions = newactions
 
     try:
         # premerge
         tocomplete = []
         for f, args, msg in mergeactions:
             repo.ui.debug(" %s: %s -> m (premerge)\n" % (f, msg))
             progress.increment(item=f)
             if f == '.hgsubstate': # subrepo states need updating
                 subrepoutil.submerge(repo, wctx, mctx, wctx.ancestor(mctx),
                                      overwrite, labels)
                 continue
             wctx[f].audit()
             complete, r = ms.preresolve(f, wctx)
             if not complete:
                 numupdates += 1
                 tocomplete.append((f, args, msg))
 
         # merge
         for f, args, msg in tocomplete:
             repo.ui.debug(" %s: %s -> m (merge)\n" % (f, msg))
             progress.increment(item=f, total=numupdates)
             ms.resolve(f, wctx)
 
     finally:
         ms.commit()
 
     unresolved = ms.unresolvedcount()
 
     if (usemergedriver and not unresolved
         and ms.mdstate() != MERGE_DRIVER_STATE_SUCCESS):
         if not driverconclude(repo, ms, wctx, labels=labels):
             # XXX setting unresolved to at least 1 is a hack to make sure we
             # error out
             unresolved = max(unresolved, 1)
 
         ms.commit()
 
     msupdated, msmerged, msremoved = ms.counts()
     updated += msupdated
     merged += msmerged
     removed += msremoved
 
     extraactions = ms.actions()
     if extraactions:
         mfiles = set(a[0] for a in actions[ACTION_MERGE])
         for k, acts in extraactions.iteritems():
             actions[k].extend(acts)
             # Remove these files from actions[ACTION_MERGE] as well. This is
             # important because in recordupdates, files in actions[ACTION_MERGE]
             # are processed after files in other actions, and the merge driver
             # might add files to those actions via extraactions above. This can
             # lead to a file being recorded twice, with poor results. This is
             # especially problematic for actions[ACTION_REMOVE] (currently only
             # possible with the merge driver in the initial merge process;
             # interrupted merges don't go through this flow).
             #
             # The real fix here is to have indexes by both file and action so
             # that when the action for a file is changed it is automatically
             # reflected in the other action lists. But that involves a more
             # complex data structure, so this will do for now.
             #
             # We don't need to do the same operation for 'dc' and 'cd' because
             # those lists aren't consulted again.
             mfiles.difference_update(a[0] for a in acts)
 
         actions[ACTION_MERGE] = [a for a in actions[ACTION_MERGE]
                                  if a[0] in mfiles]
 
     progress.complete()
     return updateresult(updated, merged, removed, unresolved)
 
 def recordupdates(repo, actions, branchmerge):
     "record merge actions to the dirstate"
     # remove (must come first)
     for f, args, msg in actions.get(ACTION_REMOVE, []):
         if branchmerge:
             repo.dirstate.remove(f)
         else:
             repo.dirstate.drop(f)
 
     # forget (must come first)
     for f, args, msg in actions.get(ACTION_FORGET, []):
         repo.dirstate.drop(f)
 
     # resolve path conflicts
     for f, args, msg in actions.get(ACTION_PATH_CONFLICT_RESOLVE, []):
         f0, = args
         origf0 = repo.dirstate.copied(f0) or f0
         repo.dirstate.add(f)
         repo.dirstate.copy(origf0, f)
         if f0 == origf0:
             repo.dirstate.remove(f0)
         else:
             repo.dirstate.drop(f0)
 
     # re-add
     for f, args, msg in actions.get(ACTION_ADD, []):
         repo.dirstate.add(f)
 
     # re-add/mark as modified
     for f, args, msg in actions.get(ACTION_ADD_MODIFIED, []):
         if branchmerge:
             repo.dirstate.normallookup(f)
         else:
             repo.dirstate.add(f)
 
     # exec change
     for f, args, msg in actions.get(ACTION_EXEC, []):
         repo.dirstate.normallookup(f)
 
     # keep
     for f, args, msg in actions.get(ACTION_KEEP, []):
         pass
 
     # get
     for f, args, msg in actions.get(ACTION_GET, []):
         if branchmerge:
             repo.dirstate.otherparent(f)
         else:
             repo.dirstate.normal(f)
 
     # merge
     for f, args, msg in actions.get(ACTION_MERGE, []):
         f1, f2, fa, move, anc = args
         if branchmerge:
             # We've done a branch merge, mark this file as merged
             # so that we properly record the merger later
             repo.dirstate.merge(f)
             if f1 != f2: # copy/rename
                 if move:
                     repo.dirstate.remove(f1)
                 if f1 != f:
                     repo.dirstate.copy(f1, f)
                 else:
                     repo.dirstate.copy(f2, f)
         else:
             # We've update-merged a locally modified file, so
             # we set the dirstate to emulate a normal checkout
             # of that file some time in the past. Thus our
             # merge will appear as a normal local file
             # modification.
             if f2 == f: # file not locally copied/moved
                 repo.dirstate.normallookup(f)
             if move:
                 repo.dirstate.drop(f1)
 
     # directory rename, move local
     for f, args, msg in actions.get(ACTION_DIR_RENAME_MOVE_LOCAL, []):
         f0, flag = args
         if branchmerge:
             repo.dirstate.add(f)
             repo.dirstate.remove(f0)
             repo.dirstate.copy(f0, f)
         else:
             repo.dirstate.normal(f)
             repo.dirstate.drop(f0)
 
     # directory rename, get
     for f, args, msg in actions.get(ACTION_LOCAL_DIR_RENAME_GET, []):
         f0, flag = args
         if branchmerge:
             repo.dirstate.add(f)
             repo.dirstate.copy(f0, f)
         else:
             repo.dirstate.normal(f)
 
 def update(repo, node, branchmerge, force, ancestor=None,
            mergeancestor=False, labels=None, matcher=None, mergeforce=False,
            updatecheck=None, wc=None):
     """
     Perform a merge between the working directory and the given node
 
     node = the node to update to
     branchmerge = whether to merge between branches
     force = whether to force branch merging or file overwriting
     matcher = a matcher to filter file lists (dirstate not updated)
     mergeancestor = whether it is merging with an ancestor. If true,
       we should accept the incoming changes for any prompts that occur.
       If false, merging with an ancestor (fast-forward) is only allowed
       between different named branches. This flag is used by rebase extension
       as a temporary fix and should be avoided in general.
     labels = labels to use for base, local and other
     mergeforce = whether the merge was run with 'merge --force' (deprecated): if
       this is True, then 'force' should be True as well.
 
     The table below shows all the behaviors of the update command given the
     -c/--check and -C/--clean or no options, whether the working directory is
     dirty, whether a revision is specified, and the relationship of the parent
     rev to the target rev (linear or not). Match from top first. The -n
     option doesn't exist on the command line, but represents the
     experimental.updatecheck=noconflict option.
 
     This logic is tested by test-update-branches.t.
 
     -c  -C  -n  -m  dirty  rev  linear  |  result
      y   y   *   *    *     *     *     |    (1)
      y   *   y   *    *     *     *     |    (1)
      y   *   *   y    *     *     *     |    (1)
      *   y   y   *    *     *     *     |    (1)
      *   y   *   y    *     *     *     |    (1)
      *   *   y   y    *     *     *     |    (1)
      *   *   *   *    *     n     n     |     x
      *   *   *   *    n     *     *     |    ok
      n   n   n   n    y     *     y     |   merge
      n   n   n   n    y     y     n     |    (2)
      n   n   n   y    y     *     *     |   merge
      n   n   y   n    y     *     *     |  merge if no conflict
      n   y   n   n    y     *     *     |  discard
      y   n   n   n    y     *     *     |    (3)
 
     x = can't happen
     * = don't-care
     1 = incompatible options (checked in commands.py)
     2 = abort: uncommitted changes (commit or update --clean to discard changes)
     3 = abort: uncommitted changes (checked in commands.py)
 
     The merge is performed inside ``wc``, a workingctx-like objects. It defaults
     to repo[None] if None is passed.
 
     Return the same tuple as applyupdates().
     """
     # Avoid cycle.
     from . import sparse
 
     # This function used to find the default destination if node was None, but
     # that's now in destutil.py.
     assert node is not None
     if not branchmerge and not force:
         # TODO: remove the default once all callers that pass branchmerge=False
         # and force=False pass a value for updatecheck. We may want to allow
         # updatecheck='abort' to better suppport some of these callers.
         if updatecheck is None:
             updatecheck = 'linear'
         assert updatecheck in ('none', 'linear', 'noconflict')
     # If we're doing a partial update, we need to skip updating
     # the dirstate, so make a note of any partial-ness to the
     # update here.
     if matcher is None or matcher.always():
         partial = False
     else:
         partial = True
     with repo.wlock():
         if wc is None:
             wc = repo[None]
         pl = wc.parents()
         p1 = pl[0]
         pas = [None]
         if ancestor is not None:
             pas = [repo[ancestor]]
 
         overwrite = force and not branchmerge
 
         p2 = repo[node]
         if pas[0] is None:
             if repo.ui.configlist('merge', 'preferancestor') == ['*']:
                 cahs = repo.changelog.commonancestorsheads(p1.node(), p2.node())
                 pas = [repo[anc] for anc in (sorted(cahs) or [nullid])]
             else:
                 pas = [p1.ancestor(p2, warn=branchmerge)]
 
         fp1, fp2, xp1, xp2 = p1.node(), p2.node(), bytes(p1), bytes(p2)
 
         ### check phase
         if not overwrite:
             if len(pl) > 1:
                 raise error.Abort(_("outstanding uncommitted merge"))
             ms = mergestate.read(repo)
             if list(ms.unresolved()):
                 raise error.Abort(_("outstanding merge conflicts"))
         if branchmerge:
             if pas == [p2]:
                 raise error.Abort(_("merging with a working directory ancestor"
                                    " has no effect"))
             elif pas == [p1]:
                 if not mergeancestor and wc.branch() == p2.branch():
                     raise error.Abort(_("nothing to merge"),
                                      hint=_("use 'hg update' "
                                             "or check 'hg heads'"))
             if not force and (wc.files() or wc.deleted()):
                 raise error.Abort(_("uncommitted changes"),
                                  hint=_("use 'hg status' to list changes"))
             if not wc.isinmemory():
                 for s in sorted(wc.substate):
                     wc.sub(s).bailifchanged()
 
         elif not overwrite:
             if p1 == p2: # no-op update
                 # call the hooks and exit early
                 repo.hook('preupdate', throw=True, parent1=xp2, parent2='')
                 repo.hook('update', parent1=xp2, parent2='', error=0)
                 return updateresult(0, 0, 0, 0)
 
             if (updatecheck == 'linear' and
                     pas not in ([p1], [p2])):  # nonlinear
                 dirty = wc.dirty(missing=True)
                 if dirty:
                     # Branching is a bit strange to ensure we do the minimal
                     # amount of call to obsutil.foreground.
                     foreground = obsutil.foreground(repo, [p1.node()])
                     # note: the <node> variable contains a random identifier
                     if repo[node].node() in foreground:
                         pass # allow updating to successors
                     else:
                         msg = _("uncommitted changes")
                         hint = _("commit or update --clean to discard changes")
                         raise error.UpdateAbort(msg, hint=hint)
                 else:
                     # Allow jumping branches if clean and specific rev given
                     pass
 
         if overwrite:
             pas = [wc]
         elif not branchmerge:
             pas = [p1]
 
         # deprecated config: merge.followcopies
         followcopies = repo.ui.configbool('merge', 'followcopies')
         if overwrite:
             followcopies = False
         elif not pas[0]:
             followcopies = False
         if not branchmerge and not wc.dirty(missing=True):
             followcopies = False
 
         ### calculate phase
         actionbyfile, diverge, renamedelete = calculateupdates(
             repo, wc, p2, pas, branchmerge, force, mergeancestor,
             followcopies, matcher=matcher, mergeforce=mergeforce)
 
         if updatecheck == 'noconflict':
             for f, (m, args, msg) in actionbyfile.iteritems():
                 if m not in (ACTION_GET, ACTION_KEEP, ACTION_EXEC,
                              ACTION_REMOVE, ACTION_PATH_CONFLICT_RESOLVE):
                     msg = _("conflicting changes")
                     hint = _("commit or update --clean to discard changes")
                     raise error.Abort(msg, hint=hint)
 
         # Prompt and create actions. Most of this is in the resolve phase
         # already, but we can't handle .hgsubstate in filemerge or
         # subrepoutil.submerge yet so we have to keep prompting for it.
         if '.hgsubstate' in actionbyfile:
             f = '.hgsubstate'
             m, args, msg = actionbyfile[f]
             prompts = filemerge.partextras(labels)
             prompts['f'] = f
             if m == ACTION_CHANGED_DELETED:
                 if repo.ui.promptchoice(
                     _("local%(l)s changed %(f)s which other%(o)s deleted\n"
                       "use (c)hanged version or (d)elete?"
                       "$$ &Changed $$ &Delete") % prompts, 0):
                     actionbyfile[f] = (ACTION_REMOVE, None, 'prompt delete')
                 elif f in p1:
                     actionbyfile[f] = (ACTION_ADD_MODIFIED, None, 'prompt keep')
                 else:
                     actionbyfile[f] = (ACTION_ADD, None, 'prompt keep')
             elif m == ACTION_DELETED_CHANGED:
                 f1, f2, fa, move, anc = args
                 flags = p2[f2].flags()
                 if repo.ui.promptchoice(
                     _("other%(o)s changed %(f)s which local%(l)s deleted\n"
                       "use (c)hanged version or leave (d)eleted?"
                       "$$ &Changed $$ &Deleted") % prompts, 0) == 0:
                     actionbyfile[f] = (ACTION_GET, (flags, False),
                                        'prompt recreating')
                 else:
                     del actionbyfile[f]
 
         # Convert to dictionary-of-lists format
         actions = dict((m, [])
                        for m in (
                            ACTION_ADD,
                            ACTION_ADD_MODIFIED,
                            ACTION_FORGET,
                            ACTION_GET,
                            ACTION_CHANGED_DELETED,
                            ACTION_DELETED_CHANGED,
                            ACTION_REMOVE,
                            ACTION_DIR_RENAME_MOVE_LOCAL,
                            ACTION_LOCAL_DIR_RENAME_GET,
                            ACTION_MERGE,
                            ACTION_EXEC,
                            ACTION_KEEP,
                            ACTION_PATH_CONFLICT,
                            ACTION_PATH_CONFLICT_RESOLVE))
         for f, (m, args, msg) in actionbyfile.iteritems():
             if m not in actions:
                 actions[m] = []
             actions[m].append((f, args, msg))
 
         if not util.fscasesensitive(repo.path):
             # check collision between files only in p2 for clean update
             if (not branchmerge and
                 (force or not wc.dirty(missing=True, branch=False))):
                 _checkcollision(repo, p2.manifest(), None)
             else:
                 _checkcollision(repo, wc.manifest(), actions)
 
         # divergent renames
         for f, fl in sorted(diverge.iteritems()):
             repo.ui.warn(_("note: possible conflict - %s was renamed "
                            "multiple times to:\n") % f)
             for nf in fl:
                 repo.ui.warn(" %s\n" % nf)
 
         # rename and delete
         for f, fl in sorted(renamedelete.iteritems()):
             repo.ui.warn(_("note: possible conflict - %s was deleted "
                            "and renamed to:\n") % f)
             for nf in fl:
                 repo.ui.warn(" %s\n" % nf)
 
         ### apply phase
         if not branchmerge: # just jump to the new rev
             fp1, fp2, xp1, xp2 = fp2, nullid, xp2, ''
         if not partial and not wc.isinmemory():
             repo.hook('preupdate', throw=True, parent1=xp1, parent2=xp2)
             # note that we're in the middle of an update
             repo.vfs.write('updatestate', p2.hex())
 
         # Advertise fsmonitor when its presence could be useful.
         #
         # We only advertise when performing an update from an empty working
         # directory. This typically only occurs during initial clone.
         #
         # We give users a mechanism to disable the warning in case it is
         # annoying.
         #
         # We only allow on Linux and MacOS because that's where fsmonitor is
         # considered stable.
         fsmonitorwarning = repo.ui.configbool('fsmonitor', 'warn_when_unused')
         fsmonitorthreshold = repo.ui.configint('fsmonitor',
                                                'warn_update_file_count')
         try:
             # avoid cycle: extensions -> cmdutil -> merge
             from . import extensions
             extensions.find('fsmonitor')
             fsmonitorenabled = repo.ui.config('fsmonitor', 'mode') != 'off'
             # We intentionally don't look at whether fsmonitor has disabled
             # itself because a) fsmonitor may have already printed a warning
             # b) we only care about the config state here.
         except KeyError:
             fsmonitorenabled = False
 
         if (fsmonitorwarning
                 and not fsmonitorenabled
                 and p1.node() == nullid
                 and len(actions[ACTION_GET]) >= fsmonitorthreshold
                 and pycompat.sysplatform.startswith(('linux', 'darwin'))):
             repo.ui.warn(
                 _('(warning: large working directory being used without '
                   'fsmonitor enabled; enable fsmonitor to improve performance; '
                   'see "hg help -e fsmonitor")\n'))
 
         stats = applyupdates(repo, actions, wc, p2, overwrite, labels=labels)
 
         if not partial and not wc.isinmemory():
             with repo.dirstate.parentchange():
                 repo.setparents(fp1, fp2)
                 recordupdates(repo, actions, branchmerge)
                 # update completed, clear state
                 util.unlink(repo.vfs.join('updatestate'))
 
                 if not branchmerge:
                     repo.dirstate.setbranch(p2.branch())
 
     # If we're updating to a location, clean up any stale temporary includes
     # (ex: this happens during hg rebase --abort).
     if not branchmerge:
         sparse.prunetemporaryincludes(repo)
 
     if not partial:
         repo.hook('update', parent1=xp1, parent2=xp2,
                   error=stats.unresolvedcount)
     return stats
 
 def graft(repo, ctx, pctx, labels, keepparent=False):
     """Do a graft-like merge.
 
     This is a merge where the merge ancestor is chosen such that one
     or more changesets are grafted onto the current changeset. In
     addition to the merge, this fixes up the dirstate to include only
     a single parent (if keepparent is False) and tries to duplicate any
     renames/copies appropriately.
 
     ctx - changeset to rebase
     pctx - merge base, usually ctx.p1()
     labels - merge labels eg ['local', 'graft']
     keepparent - keep second parent if any
 
     """
     # If we're grafting a descendant onto an ancestor, be sure to pass
     # mergeancestor=True to update. This does two things: 1) allows the merge if
     # the destination is the same as the parent of the ctx (so we can use graft
     # to copy commits), and 2) informs update that the incoming changes are
     # newer than the destination so it doesn't prompt about "remote changed foo
     # which local deleted".
     mergeancestor = repo.changelog.isancestor(repo['.'].node(), ctx.node())
 
     stats = update(repo, ctx.node(), True, True, pctx.node(),
                    mergeancestor=mergeancestor, labels=labels)
 
     pother = nullid
     parents = ctx.parents()
     if keepparent and len(parents) == 2 and pctx in parents:
         parents.remove(pctx)
         pother = parents[0].node()
 
     with repo.dirstate.parentchange():
         repo.setparents(repo['.'].node(), pother)
         repo.dirstate.write(repo.currenttransaction())
         # fix up dirstate for copies and renames
         copies.duplicatecopies(repo, repo[None], ctx.rev(), pctx.rev())
     return stats

tests/test-commit-interactive-curses.t

@@ -1,426 +1,434 b''
 #require tic
 
 Set up a repo
 
   $ cp $HGRCPATH $HGRCPATH.pretest
   $ cat <<EOF >> $HGRCPATH
   > [ui]
   > interactive = true
   > interface = curses
   > [experimental]
   > crecordtest = testModeCommands
   > EOF
 
 Record with noeol at eof (issue5268)
   $ hg init noeol
   $ cd noeol
   $ printf '0' > a
   $ printf '0\n' > b
   $ hg ci -Aqm initial
   $ printf '1\n0' > a
   $ printf '1\n0\n' > b
   $ cat <<EOF >testModeCommands
   > c
   > EOF
   $ HGEDITOR="\"sh\" \"`pwd`/editor.sh\"" hg commit  -i -m "add hunks" -d "0 0"
   $ cd ..
 
 Normal repo
   $ hg init a
   $ cd a
 
 Committing some changes but stopping on the way
 
   $ echo "a" > a
   $ hg add a
   $ cat <<EOF >testModeCommands
   > TOGGLE
   > X
   > EOF
   $ hg commit -i  -m "a" -d "0 0"
   no changes to record
   [1]
   $ hg tip
   changeset:   -1:000000000000
   tag:         tip
   user:        
   date:        Thu Jan 01 00:00:00 1970 +0000
   
 
 Committing some changes
 
   $ cat <<EOF >testModeCommands
   > X
   > EOF
   $ hg commit -i  -m "a" -d "0 0"
   $ hg tip
   changeset:   0:cb9a9f314b8b
   tag:         tip
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     a
   
 Check that commit -i works with no changes
   $ hg commit -i
   no changes to record
   [1]
 
 Committing only one file
 
   $ echo "a" >> a
   >>> open('b', 'wb').write(b"1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n") and None
   $ hg add b
   $ cat <<EOF >testModeCommands
   > TOGGLE
   > KEY_DOWN
   > X
   > EOF
   $ hg commit -i  -m "one file" -d "0 0"
   $ hg tip
   changeset:   1:fb2705a663ea
   tag:         tip
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     one file
   
   $ hg cat -r tip a
   a
   $ cat a
   a
   a
 
 Committing only one hunk while aborting edition of hunk
 
 - Untoggle all the hunks, go down to the second file
 - unfold it
 - go down to second hunk (1 for the first hunk, 1 for the first hunkline, 1 for the second hunk, 1 for the second hunklike)
 - toggle the second hunk
 - toggle on and off the amend mode (to check that it toggles off)
 - edit the hunk and quit the editor immediately with non-zero status
 - commit
 
   $ printf "printf 'editor ran\n'; exit 1" > editor.sh
   $ echo "x" > c
   $ cat b >> c
   $ echo "y" >> c
   $ mv c b
   $ cat <<EOF >testModeCommands
   > A
   > KEY_DOWN
   > f
   > KEY_DOWN
   > KEY_DOWN
   > KEY_DOWN
   > KEY_DOWN
   > TOGGLE
   > a
   > a
   > e
   > X
   > EOF
   $ HGEDITOR="\"sh\" \"`pwd`/editor.sh\"" hg commit -i  -m "one hunk" -d "0 0"
   editor ran
   $ rm editor.sh
   $ hg tip
   changeset:   2:7d10dfe755a8
   tag:         tip
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     one hunk
   
   $ hg cat -r tip b
   1
   2
   3
   4
   5
   6
   7
   8
   9
   10
   y
   $ cat b
   x
   1
   2
   3
   4
   5
   6
   7
   8
   9
   10
   y
   $ hg commit -m "other hunks"
   $ hg tip
   changeset:   3:a6735021574d
   tag:         tip
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     other hunks
   
   $ hg cat -r tip b
   x
   1
   2
   3
   4
   5
   6
   7
   8
   9
   10
   y
 
 Newly added files can be selected with the curses interface
 
   $ hg update -C .
   0 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ echo "hello" > x
   $ hg add x
   $ cat <<EOF >testModeCommands
   > TOGGLE
   > TOGGLE
   > X
   > EOF
   $ hg st
   A x
   ? testModeCommands
   $ hg commit -i  -m "newly added file" -d "0 0"
   $ hg st
   ? testModeCommands
 
 Amend option works
   $ echo "hello world" > x
   $ hg diff -c .
   diff -r a6735021574d -r 2b0e9be4d336 x
   --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
   +++ b/x	Thu Jan 01 00:00:00 1970 +0000
   @@ -0,0 +1,1 @@
   +hello
   $ cat <<EOF >testModeCommands
   > a
   > X
   > EOF
   $ hg commit -i  -m "newly added file" -d "0 0"
   saved backup bundle to $TESTTMP/a/.hg/strip-backup/2b0e9be4d336-3cf0bc8c-amend.hg
   $ hg diff -c .
   diff -r a6735021574d -r c1d239d165ae x
   --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
   +++ b/x	Thu Jan 01 00:00:00 1970 +0000
   @@ -0,0 +1,1 @@
   +hello world
 
+Make file empty
+  $ printf "" > x
+  $ cat <<EOF >testModeCommands
+  > X
+  > EOF
+  $ hg ci -i -m emptify -d "0 0"
+  $ hg update -C '.^' -q
+
 Editing a hunk puts you back on that hunk when done editing (issue5041)
 To do that, we change two lines in a file, pretend to edit the second line,
 exit, toggle the line selected at the end of the edit and commit.
 The first line should be recorded if we were put on the second line at the end
 of the edit.
 
   $ hg update -C .
   0 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ echo "foo" > x
   $ echo "hello world" >> x
   $ echo "bar" >> x
   $ cat <<EOF >testModeCommands
   > f
   > KEY_DOWN
   > KEY_DOWN
   > KEY_DOWN
   > KEY_DOWN
   > e
   > TOGGLE
   > X
   > EOF
   $ printf "printf 'editor ran\n'; exit 0" > editor.sh
-  $ HGEDITOR="\"sh\" \"`pwd`/editor.sh\"" hg commit  -i -m "edit hunk" -d "0 0"
+  $ HGEDITOR="\"sh\" \"`pwd`/editor.sh\"" hg commit  -i -m "edit hunk" -d "0 0" -q
   editor ran
   $ hg cat -r . x
   foo
   hello world
 
 Testing the review option. The entire final filtered patch should show
 up in the editor and be editable. We will unselect the second file and
 the first hunk of the third file. During review, we will decide that
 "lower" sounds better than "bottom", and the final commit should
 reflect this edition.
 
   $ hg update -C .
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ echo "top" > c
   $ cat x >> c
   $ echo "bottom" >> c
   $ mv c x
   $ echo "third a" >> a
   $ echo "we will unselect this" >> b
 
   $ cat > editor.sh <<EOF
   > cat "\$1"
   > cat "\$1" | sed s/bottom/lower/ > tmp
   > mv tmp "\$1"
   > EOF
   $ cat > testModeCommands <<EOF
   > KEY_DOWN
   > TOGGLE
   > KEY_DOWN
   > f
   > KEY_DOWN
   > TOGGLE
   > R
   > EOF
 
   $ HGEDITOR="\"sh\" \"`pwd`/editor.sh\"" hg commit  -i -m "review hunks" -d "0 0"
   # To remove '-' lines, make them ' ' lines (context).
   # To remove '+' lines, delete them.
   # Lines starting with # will be removed from the patch.
   #
   # If the patch applies cleanly, the edited patch will immediately
   # be finalised. If it does not apply cleanly, rejects files will be
   # generated. You can use those when you try again.
   diff --git a/a b/a
   --- a/a
   +++ b/a
   @@ -1,2 +1,3 @@
    a
    a
   +third a
   diff --git a/x b/x
   --- a/x
   +++ b/x
   @@ -1,2 +1,3 @@
    foo
    hello world
   +bottom
 
   $ hg cat -r . a
   a
   a
   third a
 
   $ hg cat -r . b
   x
   1
   2
   3
   4
   5
   6
   7
   8
   9
   10
   y
 
   $ hg cat -r . x
   foo
   hello world
   lower
 
 Check spacemovesdown
 
   $ cat <<EOF >> $HGRCPATH
   > [experimental]
   > spacemovesdown = true
   > EOF
   $ cat <<EOF >testModeCommands
   > TOGGLE
   > TOGGLE
   > X
   > EOF
   $ hg status -q
   M b
   M x
   $ hg commit -i -m "nothing to commit?" -d "0 0"
   no changes to record
   [1]
 
 Check ui.interface logic for the chunkselector
 
 The default interface is text
   $ cp $HGRCPATH.pretest $HGRCPATH
   $ chunkselectorinterface() {
   > $PYTHON <<EOF
   > from mercurial import hg, ui;\
   > repo = hg.repository(ui.ui.load(), ".");\
   > print(repo.ui.interface("chunkselector"))
   > EOF
   > }
   $ chunkselectorinterface
   text
 
 If only the default is set, we'll use that for the feature, too
   $ cp $HGRCPATH.pretest $HGRCPATH
   $ cat <<EOF >> $HGRCPATH
   > [ui]
   > interface = curses
   > EOF
   $ chunkselectorinterface
   curses
 
 It is possible to override the default interface with a feature specific
 interface
   $ cp $HGRCPATH.pretest $HGRCPATH
   $ cat <<EOF >> $HGRCPATH
   > [ui]
   > interface = text
   > interface.chunkselector = curses
   > EOF
 
   $ chunkselectorinterface
   curses
 
   $ cp $HGRCPATH.pretest $HGRCPATH
   $ cat <<EOF >> $HGRCPATH
   > [ui]
   > interface = curses
   > interface.chunkselector = text
   > EOF
 
   $ chunkselectorinterface
   text
 
 If a bad interface name is given, we use the default value (with a nice
 error message to suggest that the configuration needs to be fixed)
 
   $ cp $HGRCPATH.pretest $HGRCPATH
   $ cat <<EOF >> $HGRCPATH
   > [ui]
   > interface = blah
   > EOF
   $ chunkselectorinterface
   invalid value for ui.interface: blah (using text)
   text
 
   $ cp $HGRCPATH.pretest $HGRCPATH
   $ cat <<EOF >> $HGRCPATH
   > [ui]
   > interface = curses
   > interface.chunkselector = blah
   > EOF
   $ chunkselectorinterface
   invalid value for ui.interface.chunkselector: blah (using curses)
   curses
 
   $ cp $HGRCPATH.pretest $HGRCPATH
   $ cat <<EOF >> $HGRCPATH
   > [ui]
   > interface = blah
   > interface.chunkselector = curses
   > EOF
   $ chunkselectorinterface
   invalid value for ui.interface: blah
   curses
 
   $ cp $HGRCPATH.pretest $HGRCPATH
   $ cat <<EOF >> $HGRCPATH
   > [ui]
   > interface = blah
   > interface.chunkselector = blah
   > EOF
   $ chunkselectorinterface
   invalid value for ui.interface: blah
   invalid value for ui.interface.chunkselector: blah (using text)
   text

tests/test-subrepo.t

@@ -1,1943 +1,1983 b''
 Let commit recurse into subrepos by default to match pre-2.0 behavior:
 
   $ echo "[ui]" >> $HGRCPATH
   $ echo "commitsubrepos = Yes" >> $HGRCPATH
 
   $ hg init t
   $ cd t
 
 first revision, no sub
 
   $ echo a > a
   $ hg ci -Am0
   adding a
 
 add first sub
 
   $ echo s = s > .hgsub
   $ hg add .hgsub
   $ hg init s
   $ echo a > s/a
 
 Issue2232: committing a subrepo without .hgsub
 
   $ hg ci -mbad s
   abort: can't commit subrepos without .hgsub
   [255]
 
   $ hg -R s add s/a
   $ hg files -S
   .hgsub
   a
   s/a
 
   $ hg -R s ci -Ams0
   $ hg sum
   parent: 0:f7b1eb17ad24 tip
    0
   branch: default
   commit: 1 added, 1 subrepos
   update: (current)
   phases: 1 draft
   $ hg ci -m1
 
 test handling .hgsubstate "added" explicitly.
 
   $ hg parents --template '{node}\n{files}\n'
   7cf8cfea66e410e8e3336508dfeec07b3192de51
   .hgsub .hgsubstate
   $ hg rollback -q
   $ hg add .hgsubstate
   $ hg ci -m1
   $ hg parents --template '{node}\n{files}\n'
   7cf8cfea66e410e8e3336508dfeec07b3192de51
   .hgsub .hgsubstate
 
 Subrepopath which overlaps with filepath, does not change warnings in remove()
 
   $ mkdir snot
   $ touch snot/file
   $ hg remove -S snot/file
   not removing snot/file: file is untracked
   [1]
   $ hg cat snot/filenot
   snot/filenot: no such file in rev 7cf8cfea66e4
   [1]
   $ rm -r snot
 
 Revert subrepo and test subrepo fileset keyword:
 
   $ echo b > s/a
   $ hg revert --dry-run "set:subrepo('glob:s*')"
   reverting subrepo s
   reverting s/a
   $ cat s/a
   b
   $ hg revert "set:subrepo('glob:s*')"
   reverting subrepo s
   reverting s/a
   $ cat s/a
   a
   $ rm s/a.orig
 
 Revert subrepo with no backup. The "reverting s/a" line is gone since
 we're really running 'hg update' in the subrepo:
 
   $ echo b > s/a
   $ hg revert --no-backup s
   reverting subrepo s
 
 Issue2022: update -C
 
   $ echo b > s/a
   $ hg sum
   parent: 1:7cf8cfea66e4 tip
    1
   branch: default
   commit: 1 subrepos
   update: (current)
   phases: 2 draft
   $ hg co -C 1
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg sum
   parent: 1:7cf8cfea66e4 tip
    1
   branch: default
   commit: (clean)
   update: (current)
   phases: 2 draft
 
 commands that require a clean repo should respect subrepos
 
   $ echo b >> s/a
   $ hg backout tip
   abort: uncommitted changes in subrepository "s"
   [255]
   $ hg revert -C -R s s/a
 
 add sub sub
 
   $ echo ss = ss > s/.hgsub
   $ hg init s/ss
   $ echo a > s/ss/a
   $ hg -R s add s/.hgsub
   $ hg -R s/ss add s/ss/a
   $ hg sum
   parent: 1:7cf8cfea66e4 tip
    1
   branch: default
   commit: 1 subrepos
   update: (current)
   phases: 2 draft
   $ hg ci -m2
   committing subrepository s
   committing subrepository s/ss
   $ hg sum
   parent: 2:df30734270ae tip
    2
   branch: default
   commit: (clean)
   update: (current)
   phases: 3 draft
 
 test handling .hgsubstate "modified" explicitly.
 
   $ hg parents --template '{node}\n{files}\n'
   df30734270ae757feb35e643b7018e818e78a9aa
   .hgsubstate
   $ hg rollback -q
   $ hg status -A .hgsubstate
   M .hgsubstate
   $ hg ci -m2
   $ hg parents --template '{node}\n{files}\n'
   df30734270ae757feb35e643b7018e818e78a9aa
   .hgsubstate
 
 bump sub rev (and check it is ignored by ui.commitsubrepos)
 
   $ echo b > s/a
   $ hg -R s ci -ms1
   $ hg --config ui.commitsubrepos=no ci -m3
 
 leave sub dirty (and check ui.commitsubrepos=no aborts the commit)
 
   $ echo c > s/a
   $ hg --config ui.commitsubrepos=no ci -m4
   abort: uncommitted changes in subrepository "s"
   (use --subrepos for recursive commit)
   [255]
   $ hg id
   f6affe3fbfaa+ tip
   $ hg -R s ci -mc
   $ hg id
   f6affe3fbfaa+ tip
   $ echo d > s/a
   $ hg ci -m4
   committing subrepository s
   $ hg tip -R s
   changeset:   4:02dcf1d70411
   tag:         tip
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     4
   
 
 check caching
 
   $ hg co 0
   0 files updated, 0 files merged, 2 files removed, 0 files unresolved
   $ hg debugsub
 
 restore
 
   $ hg co
   2 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg debugsub
   path s
    source   s
    revision 02dcf1d704118aee3ee306ccfa1910850d5b05ef
 
 new branch for merge tests
 
   $ hg co 1
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ echo t = t >> .hgsub
   $ hg init t
   $ echo t > t/t
   $ hg -R t add t
   adding t/t
 
 5
 
   $ hg ci -m5 # add sub
   committing subrepository t
   created new head
   $ echo t2 > t/t
 
 6
 
   $ hg st -R s
   $ hg ci -m6 # change sub
   committing subrepository t
   $ hg debugsub
   path s
    source   s
    revision e4ece1bf43360ddc8f6a96432201a37b7cd27ae4
   path t
    source   t
    revision 6747d179aa9a688023c4b0cad32e4c92bb7f34ad
   $ echo t3 > t/t
 
 7
 
   $ hg ci -m7 # change sub again for conflict test
   committing subrepository t
   $ hg rm .hgsub
 
 8
 
   $ hg ci -m8 # remove sub
 
 test handling .hgsubstate "removed" explicitly.
 
   $ hg parents --template '{node}\n{files}\n'
   96615c1dad2dc8e3796d7332c77ce69156f7b78e
   .hgsub .hgsubstate
   $ hg rollback -q
   $ hg remove .hgsubstate
   $ hg ci -m8
   $ hg parents --template '{node}\n{files}\n'
   96615c1dad2dc8e3796d7332c77ce69156f7b78e
   .hgsub .hgsubstate
 
 merge tests
 
   $ hg co -C 3
   2 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg merge 5 # test adding
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   (branch merge, don't forget to commit)
   $ hg debugsub
   path s
    source   s
    revision fc627a69481fcbe5f1135069e8a3881c023e4cf5
   path t
    source   t
    revision 60ca1237c19474e7a3978b0dc1ca4e6f36d51382
   $ hg ci -m9
   created new head
   $ hg merge 6 --debug # test change
     searching for copies back to rev 2
   resolving manifests
    branchmerge: True, force: False, partial: False
    ancestor: 1f14a2e2d3ec, local: f0d2028bf86d+, remote: 1831e14459c4
   starting 4 threads for background file closing (?)
    .hgsubstate: versions differ -> m (premerge)
   subrepo merge f0d2028bf86d+ 1831e14459c4 1f14a2e2d3ec
     subrepo t: other changed, get t:6747d179aa9a688023c4b0cad32e4c92bb7f34ad:hg
   getting subrepo t
   resolving manifests
    branchmerge: False, force: False, partial: False
    ancestor: 60ca1237c194, local: 60ca1237c194+, remote: 6747d179aa9a
    t: remote is newer -> g
   getting t
   0 files updated, 0 files merged, 0 files removed, 0 files unresolved
   (branch merge, don't forget to commit)
   $ hg debugsub
   path s
    source   s
    revision fc627a69481fcbe5f1135069e8a3881c023e4cf5
   path t
    source   t
    revision 6747d179aa9a688023c4b0cad32e4c92bb7f34ad
   $ echo conflict > t/t
   $ hg ci -m10
   committing subrepository t
   $ HGMERGE=internal:merge hg merge --debug 7 # test conflict
     searching for copies back to rev 2
   resolving manifests
    branchmerge: True, force: False, partial: False
    ancestor: 1831e14459c4, local: e45c8b14af55+, remote: f94576341bcf
   starting 4 threads for background file closing (?)
    .hgsubstate: versions differ -> m (premerge)
   subrepo merge e45c8b14af55+ f94576341bcf 1831e14459c4
     subrepo t: both sides changed 
    subrepository t diverged (local revision: 20a0db6fbf6c, remote revision: 7af322bc1198)
   starting 4 threads for background file closing (?)
   (M)erge, keep (l)ocal [working copy] or keep (r)emote [merge rev]? m
   merging subrepository "t"
     searching for copies back to rev 2
   resolving manifests
    branchmerge: True, force: False, partial: False
    ancestor: 6747d179aa9a, local: 20a0db6fbf6c+, remote: 7af322bc1198
    preserving t for resolve of t
   starting 4 threads for background file closing (?)
    t: versions differ -> m (premerge)
   picked tool ':merge' for t (binary False symlink False changedelete False)
   merging t
   my t@20a0db6fbf6c+ other t@7af322bc1198 ancestor t@6747d179aa9a
    t: versions differ -> m (merge)
   picked tool ':merge' for t (binary False symlink False changedelete False)
   my t@20a0db6fbf6c+ other t@7af322bc1198 ancestor t@6747d179aa9a
   warning: conflicts while merging t! (edit, then use 'hg resolve --mark')
   0 files updated, 0 files merged, 0 files removed, 1 files unresolved
   use 'hg resolve' to retry unresolved file merges or 'hg merge --abort' to abandon
     subrepo t: merge with t:7af322bc1198a32402fe903e0b7ebcfc5c9bf8f4:hg
   0 files updated, 0 files merged, 0 files removed, 0 files unresolved
   (branch merge, don't forget to commit)
 
 should conflict
 
   $ cat t/t
   <<<<<<< local: 20a0db6fbf6c - test: 10
   conflict
   =======
   t3
   >>>>>>> other: 7af322bc1198 - test: 7
 
 11: remove subrepo t
 
   $ hg co -C 5
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg revert -r 4 .hgsub # remove t
   $ hg ci -m11
   created new head
   $ hg debugsub
   path s
    source   s
    revision e4ece1bf43360ddc8f6a96432201a37b7cd27ae4
 
 local removed, remote changed, keep changed
 
   $ hg merge 6
    remote [merge rev] changed subrepository t which local [working copy] removed
   use (c)hanged version or (d)elete? c
   0 files updated, 0 files merged, 0 files removed, 0 files unresolved
   (branch merge, don't forget to commit)
 BROKEN: should include subrepo t
   $ hg debugsub
   path s
    source   s
    revision e4ece1bf43360ddc8f6a96432201a37b7cd27ae4
   $ cat .hgsubstate
   e4ece1bf43360ddc8f6a96432201a37b7cd27ae4 s
   6747d179aa9a688023c4b0cad32e4c92bb7f34ad t
   $ hg ci -m 'local removed, remote changed, keep changed'
 BROKEN: should include subrepo t
   $ hg debugsub
   path s
    source   s
    revision e4ece1bf43360ddc8f6a96432201a37b7cd27ae4
 BROKEN: should include subrepo t
   $ cat .hgsubstate
   e4ece1bf43360ddc8f6a96432201a37b7cd27ae4 s
   $ cat t/t
   t2
 
 local removed, remote changed, keep removed
 
   $ hg co -C 11
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg merge --config ui.interactive=true 6 <<EOF
   > d
   > EOF
    remote [merge rev] changed subrepository t which local [working copy] removed
   use (c)hanged version or (d)elete? d
   0 files updated, 0 files merged, 0 files removed, 0 files unresolved
   (branch merge, don't forget to commit)
   $ hg debugsub
   path s
    source   s
    revision e4ece1bf43360ddc8f6a96432201a37b7cd27ae4
   $ cat .hgsubstate
   e4ece1bf43360ddc8f6a96432201a37b7cd27ae4 s
   $ hg ci -m 'local removed, remote changed, keep removed'
   created new head
   $ hg debugsub
   path s
    source   s
    revision e4ece1bf43360ddc8f6a96432201a37b7cd27ae4
   $ cat .hgsubstate
   e4ece1bf43360ddc8f6a96432201a37b7cd27ae4 s
 
 local changed, remote removed, keep changed
 
   $ hg co -C 6
   2 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg merge 11
    local [working copy] changed subrepository t which remote [merge rev] removed
   use (c)hanged version or (d)elete? c
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   (branch merge, don't forget to commit)
 BROKEN: should include subrepo t
   $ hg debugsub
   path s
    source   s
    revision e4ece1bf43360ddc8f6a96432201a37b7cd27ae4
 BROKEN: should include subrepo t
   $ cat .hgsubstate
   e4ece1bf43360ddc8f6a96432201a37b7cd27ae4 s
   $ hg ci -m 'local changed, remote removed, keep changed'
   created new head
 BROKEN: should include subrepo t
   $ hg debugsub
   path s
    source   s
    revision e4ece1bf43360ddc8f6a96432201a37b7cd27ae4
 BROKEN: should include subrepo t
   $ cat .hgsubstate
   e4ece1bf43360ddc8f6a96432201a37b7cd27ae4 s
   $ cat t/t
   t2
 
 local changed, remote removed, keep removed
 
   $ hg co -C 6
   2 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg merge --config ui.interactive=true 11 <<EOF
   > d
   > EOF
    local [working copy] changed subrepository t which remote [merge rev] removed
   use (c)hanged version or (d)elete? d
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   (branch merge, don't forget to commit)
   $ hg debugsub
   path s
    source   s
    revision e4ece1bf43360ddc8f6a96432201a37b7cd27ae4
   $ cat .hgsubstate
   e4ece1bf43360ddc8f6a96432201a37b7cd27ae4 s
   $ hg ci -m 'local changed, remote removed, keep removed'
   created new head
   $ hg debugsub
   path s
    source   s
    revision e4ece1bf43360ddc8f6a96432201a37b7cd27ae4
   $ cat .hgsubstate
   e4ece1bf43360ddc8f6a96432201a37b7cd27ae4 s
 
 clean up to avoid having to fix up the tests below
 
   $ hg co -C 10
   2 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ cat >> $HGRCPATH <<EOF
   > [extensions]
   > strip=
   > EOF
   $ hg strip -r 11:15
   saved backup bundle to $TESTTMP/t/.hg/strip-backup/*-backup.hg (glob)
 
 clone
 
   $ cd ..
   $ hg clone t tc
   updating to branch default
   cloning subrepo s from $TESTTMP/t/s
   cloning subrepo s/ss from $TESTTMP/t/s/ss
   cloning subrepo t from $TESTTMP/t/t
   3 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ cd tc
   $ hg debugsub
   path s
    source   s
    revision fc627a69481fcbe5f1135069e8a3881c023e4cf5
   path t
    source   t
    revision 20a0db6fbf6c3d2836e6519a642ae929bfc67c0e
   $ cd ..
 
 clone with subrepo disabled (update should fail)
 
   $ hg clone t -U tc2 --config subrepos.allowed=false
   $ hg update -R tc2 --config subrepos.allowed=false
   abort: subrepos not enabled
   (see 'hg help config.subrepos' for details)
   [255]
   $ ls tc2
   a
 
   $ hg clone t tc3 --config subrepos.allowed=false
   updating to branch default
   abort: subrepos not enabled
   (see 'hg help config.subrepos' for details)
   [255]
   $ ls tc3
   a
 
 And again with just the hg type disabled
 
   $ hg clone t -U tc4 --config subrepos.hg:allowed=false
   $ hg update -R tc4 --config subrepos.hg:allowed=false
   abort: hg subrepos not allowed
   (see 'hg help config.subrepos' for details)
   [255]
   $ ls tc4
   a
 
   $ hg clone t tc5 --config subrepos.hg:allowed=false
   updating to branch default
   abort: hg subrepos not allowed
   (see 'hg help config.subrepos' for details)
   [255]
   $ ls tc5
   a
 
 push
 
   $ cd tc
   $ echo bah > t/t
   $ hg ci -m11
   committing subrepository t
   $ hg push
   pushing to $TESTTMP/t
   no changes made to subrepo s/ss since last push to $TESTTMP/t/s/ss
   no changes made to subrepo s since last push to $TESTTMP/t/s
   pushing subrepo t to $TESTTMP/t/t
   searching for changes
   adding changesets
   adding manifests
   adding file changes
   added 1 changesets with 1 changes to 1 files
   searching for changes
   adding changesets
   adding manifests
   adding file changes
   added 1 changesets with 1 changes to 1 files
 
 push -f
 
   $ echo bah > s/a
   $ hg ci -m12
   committing subrepository s
   $ hg push
   pushing to $TESTTMP/t
   no changes made to subrepo s/ss since last push to $TESTTMP/t/s/ss
   pushing subrepo s to $TESTTMP/t/s
   searching for changes
   abort: push creates new remote head 12a213df6fa9! (in subrepository "s")
   (merge or see 'hg help push' for details about pushing new heads)
   [255]
   $ hg push -f
   pushing to $TESTTMP/t
   pushing subrepo s/ss to $TESTTMP/t/s/ss
   searching for changes
   no changes found
   pushing subrepo s to $TESTTMP/t/s
   searching for changes
   adding changesets
   adding manifests
   adding file changes
   added 1 changesets with 1 changes to 1 files (+1 heads)
   pushing subrepo t to $TESTTMP/t/t
   searching for changes
   no changes found
   searching for changes
   adding changesets
   adding manifests
   adding file changes
   added 1 changesets with 1 changes to 1 files
 
 check that unmodified subrepos are not pushed
 
   $ hg clone . ../tcc
   updating to branch default
   cloning subrepo s from $TESTTMP/tc/s
   cloning subrepo s/ss from $TESTTMP/tc/s/ss
   cloning subrepo t from $TESTTMP/tc/t
   3 files updated, 0 files merged, 0 files removed, 0 files unresolved
 
 the subrepos on the new clone have nothing to push to its source
 
   $ hg push -R ../tcc .
   pushing to .
   no changes made to subrepo s/ss since last push to s/ss
   no changes made to subrepo s since last push to s
   no changes made to subrepo t since last push to t
   searching for changes
   no changes found
   [1]
 
 the subrepos on the source do not have a clean store versus the clone target
 because they were never explicitly pushed to the source
 
   $ hg push ../tcc
   pushing to ../tcc
   pushing subrepo s/ss to ../tcc/s/ss
   searching for changes
   no changes found
   pushing subrepo s to ../tcc/s
   searching for changes
   no changes found
   pushing subrepo t to ../tcc/t
   searching for changes
   no changes found
   searching for changes
   no changes found
   [1]
 
 after push their stores become clean
 
   $ hg push ../tcc
   pushing to ../tcc
   no changes made to subrepo s/ss since last push to ../tcc/s/ss
   no changes made to subrepo s since last push to ../tcc/s
   no changes made to subrepo t since last push to ../tcc/t
   searching for changes
   no changes found
   [1]
 
 updating a subrepo to a different revision or changing
 its working directory does not make its store dirty
 
   $ hg -R s update '.^'
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg push
   pushing to $TESTTMP/t
   no changes made to subrepo s/ss since last push to $TESTTMP/t/s/ss
   no changes made to subrepo s since last push to $TESTTMP/t/s
   no changes made to subrepo t since last push to $TESTTMP/t/t
   searching for changes
   no changes found
   [1]
   $ echo foo >> s/a
   $ hg push
   pushing to $TESTTMP/t
   no changes made to subrepo s/ss since last push to $TESTTMP/t/s/ss
   no changes made to subrepo s since last push to $TESTTMP/t/s
   no changes made to subrepo t since last push to $TESTTMP/t/t
   searching for changes
   no changes found
   [1]
   $ hg -R s update -C tip
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
 
 committing into a subrepo makes its store (but not its parent's store) dirty
 
   $ echo foo >> s/ss/a
   $ hg -R s/ss commit -m 'test dirty store detection'
 
   $ hg out -S -r `hg log -r tip -T "{node|short}"`
   comparing with $TESTTMP/t
   searching for changes
   no changes found
   comparing with $TESTTMP/t/s
   searching for changes
   no changes found
   comparing with $TESTTMP/t/s/ss
   searching for changes
   changeset:   1:79ea5566a333
   tag:         tip
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     test dirty store detection
   
   comparing with $TESTTMP/t/t
   searching for changes
   no changes found
 
   $ hg push
   pushing to $TESTTMP/t
   pushing subrepo s/ss to $TESTTMP/t/s/ss
   searching for changes
   adding changesets
   adding manifests
   adding file changes
   added 1 changesets with 1 changes to 1 files
   no changes made to subrepo s since last push to $TESTTMP/t/s
   no changes made to subrepo t since last push to $TESTTMP/t/t
   searching for changes
   no changes found
   [1]
 
 a subrepo store may be clean versus one repo but not versus another
 
   $ hg push
   pushing to $TESTTMP/t
   no changes made to subrepo s/ss since last push to $TESTTMP/t/s/ss
   no changes made to subrepo s since last push to $TESTTMP/t/s
   no changes made to subrepo t since last push to $TESTTMP/t/t
   searching for changes
   no changes found
   [1]
   $ hg push ../tcc
   pushing to ../tcc
   pushing subrepo s/ss to ../tcc/s/ss
   searching for changes
   adding changesets
   adding manifests
   adding file changes
   added 1 changesets with 1 changes to 1 files
   no changes made to subrepo s since last push to ../tcc/s
   no changes made to subrepo t since last push to ../tcc/t
   searching for changes
   no changes found
   [1]
 
 update
 
   $ cd ../t
   $ hg up -C # discard our earlier merge
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   updated to "c373c8102e68: 12"
   2 other heads for branch "default"
   $ echo blah > t/t
   $ hg ci -m13
   committing subrepository t
 
 backout calls revert internally with minimal opts, which should not raise
 KeyError
 
   $ hg backout ".^" --no-commit
   0 files updated, 0 files merged, 0 files removed, 0 files unresolved
   changeset c373c8102e68 backed out, don't forget to commit.
 
   $ hg up -C # discard changes
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   updated to "925c17564ef8: 13"
   2 other heads for branch "default"
 
 pull
 
   $ cd ../tc
   $ hg pull
   pulling from $TESTTMP/t
   searching for changes
   adding changesets
   adding manifests
   adding file changes
   added 1 changesets with 1 changes to 1 files
   new changesets 925c17564ef8
   (run 'hg update' to get a working copy)
 
 should pull t
 
   $ hg incoming -S -r `hg log -r tip -T "{node|short}"`
   comparing with $TESTTMP/t
   no changes found
   comparing with $TESTTMP/t/s
   searching for changes
   no changes found
   comparing with $TESTTMP/t/s/ss
   searching for changes
   no changes found
   comparing with $TESTTMP/t/t
   searching for changes
   changeset:   5:52c0adc0515a
   tag:         tip
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     13
   
 
   $ hg up
   pulling subrepo t from $TESTTMP/t/t
   searching for changes
   adding changesets
   adding manifests
   adding file changes
   added 1 changesets with 1 changes to 1 files
   new changesets 52c0adc0515a
   0 files updated, 0 files merged, 0 files removed, 0 files unresolved
   updated to "925c17564ef8: 13"
   2 other heads for branch "default"
   $ cat t/t
   blah
 
 bogus subrepo path aborts
 
   $ echo 'bogus=[boguspath' >> .hgsub
   $ hg ci -m 'bogus subrepo path'
   abort: missing ] in subrepository source
   [255]
 
 Issue1986: merge aborts when trying to merge a subrepo that
 shouldn't need merging
 
 # subrepo layout
 #
 #   o   5 br
 #  /|
 # o |   4 default
 # | |
 # | o   3 br
 # |/|
 # o |   2 default
 # | |
 # | o   1 br
 # |/
 # o     0 default
 
   $ cd ..
   $ rm -rf sub
   $ hg init main
   $ cd main
   $ hg init s
   $ cd s
   $ echo a > a
   $ hg ci -Am1
   adding a
   $ hg branch br
   marked working directory as branch br
   (branches are permanent and global, did you want a bookmark?)
   $ echo a >> a
   $ hg ci -m1
   $ hg up default
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ echo b > b
   $ hg ci -Am1
   adding b
   $ hg up br
   1 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ hg merge tip
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   (branch merge, don't forget to commit)
   $ hg ci -m1
   $ hg up 2
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ echo c > c
   $ hg ci -Am1
   adding c
   $ hg up 3
   1 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ hg merge 4
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   (branch merge, don't forget to commit)
   $ hg ci -m1
 
 # main repo layout:
 #
 #   * <-- try to merge default into br again
 # .`|
 # . o   5 br      --> substate = 5
 # . |
 # o |   4 default --> substate = 4
 # | |
 # | o   3 br      --> substate = 2
 # |/|
 # o |   2 default --> substate = 2
 # | |
 # | o   1 br      --> substate = 3
 # |/
 # o     0 default --> substate = 2
 
   $ cd ..
   $ echo 's = s' > .hgsub
   $ hg -R s up 2
   1 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ hg ci -Am1
   adding .hgsub
   $ hg branch br
   marked working directory as branch br
   (branches are permanent and global, did you want a bookmark?)
   $ echo b > b
   $ hg -R s up 3
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg ci -Am1
   adding b
   $ hg up default
   1 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ echo c > c
   $ hg ci -Am1
   adding c
   $ hg up 1
   2 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ hg merge 2
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   (branch merge, don't forget to commit)
   $ hg ci -m1
   $ hg up 2
   1 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ hg -R s up 4
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ echo d > d
   $ hg ci -Am1
   adding d
   $ hg up 3
   2 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ hg -R s up 5
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ echo e > e
   $ hg ci -Am1
   adding e
 
   $ hg up 5
   0 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg merge 4    # try to merge default into br again
    subrepository s diverged (local revision: f8f13b33206e, remote revision: a3f9062a4f88)
   (M)erge, keep (l)ocal [working copy] or keep (r)emote [merge rev]? m
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   (branch merge, don't forget to commit)
   $ cd ..
 
 test subrepo delete from .hgsubstate
 
   $ hg init testdelete
   $ mkdir testdelete/nested testdelete/nested2
   $ hg init testdelete/nested
   $ hg init testdelete/nested2
   $ echo test > testdelete/nested/foo
   $ echo test > testdelete/nested2/foo
   $ hg -R testdelete/nested add
   adding testdelete/nested/foo
   $ hg -R testdelete/nested2 add
   adding testdelete/nested2/foo
   $ hg -R testdelete/nested ci -m test
   $ hg -R testdelete/nested2 ci -m test
   $ echo nested = nested > testdelete/.hgsub
   $ echo nested2 = nested2 >> testdelete/.hgsub
   $ hg -R testdelete add
   adding testdelete/.hgsub
   $ hg -R testdelete ci -m "nested 1 & 2 added"
   $ echo nested = nested > testdelete/.hgsub
   $ hg -R testdelete ci -m "nested 2 deleted"
   $ cat testdelete/.hgsubstate
   bdf5c9a3103743d900b12ae0db3ffdcfd7b0d878 nested
   $ hg -R testdelete remove testdelete/.hgsub
   $ hg -R testdelete ci -m ".hgsub deleted"
   $ cat testdelete/.hgsubstate
   bdf5c9a3103743d900b12ae0db3ffdcfd7b0d878 nested
 
 test repository cloning
 
   $ mkdir mercurial mercurial2
   $ hg init nested_absolute
   $ echo test > nested_absolute/foo
   $ hg -R nested_absolute add
   adding nested_absolute/foo
   $ hg -R nested_absolute ci -mtest
   $ cd mercurial
   $ hg init nested_relative
   $ echo test2 > nested_relative/foo2
   $ hg -R nested_relative add
   adding nested_relative/foo2
   $ hg -R nested_relative ci -mtest2
   $ hg init main
   $ echo "nested_relative = ../nested_relative" > main/.hgsub
   $ echo "nested_absolute = `pwd`/nested_absolute" >> main/.hgsub
   $ hg -R main add
   adding main/.hgsub
   $ hg -R main ci -m "add subrepos"
   $ cd ..
   $ hg clone mercurial/main mercurial2/main
   updating to branch default
   2 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ cat mercurial2/main/nested_absolute/.hg/hgrc \
   >     mercurial2/main/nested_relative/.hg/hgrc
   [paths]
   default = $TESTTMP/mercurial/nested_absolute
   [paths]
   default = $TESTTMP/mercurial/nested_relative
   $ rm -rf mercurial mercurial2
 
 Issue1977: multirepo push should fail if subrepo push fails
 
   $ hg init repo
   $ hg init repo/s
   $ echo a > repo/s/a
   $ hg -R repo/s ci -Am0
   adding a
   $ echo s = s > repo/.hgsub
   $ hg -R repo ci -Am1
   adding .hgsub
   $ hg clone repo repo2
   updating to branch default
   cloning subrepo s from $TESTTMP/repo/s
   2 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg -q -R repo2 pull -u
   $ echo 1 > repo2/s/a
   $ hg -R repo2/s ci -m2
   $ hg -q -R repo2/s push
   $ hg -R repo2/s up -C 0
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ echo 2 > repo2/s/b
   $ hg -R repo2/s ci -m3 -A
   adding b
   created new head
   $ hg -R repo2 ci -m3
   $ hg -q -R repo2 push
   abort: push creates new remote head cc505f09a8b2! (in subrepository "s")
   (merge or see 'hg help push' for details about pushing new heads)
   [255]
   $ hg -R repo update
   0 files updated, 0 files merged, 0 files removed, 0 files unresolved
 
 test if untracked file is not overwritten
 
 (this also tests that updated .hgsubstate is treated as "modified",
 when 'merge.update()' is aborted before 'merge.recordupdates()', even
 if none of mode, size and timestamp of it isn't changed on the
 filesystem (see also issue4583))
 
   $ echo issue3276_ok > repo/s/b
   $ hg -R repo2 push -f -q
   $ touch -t 200001010000 repo/.hgsubstate
 
   $ cat >> repo/.hg/hgrc <<EOF
   > [fakedirstatewritetime]
   > # emulate invoking dirstate.write() via repo.status()
   > # at 2000-01-01 00:00
   > fakenow = 200001010000
   > 
   > [extensions]
   > fakedirstatewritetime = $TESTDIR/fakedirstatewritetime.py
   > EOF
   $ hg -R repo update
   b: untracked file differs
   abort: untracked files in working directory differ from files in requested revision (in subrepository "s")
   [255]
   $ cat >> repo/.hg/hgrc <<EOF
   > [extensions]
   > fakedirstatewritetime = !
   > EOF
 
   $ cat repo/s/b
   issue3276_ok
   $ rm repo/s/b
   $ touch -t 200001010000 repo/.hgsubstate
   $ hg -R repo revert --all
   reverting repo/.hgsubstate
   reverting subrepo s
   $ hg -R repo update
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ cat repo/s/b
   2
   $ rm -rf repo2 repo
 
 
 Issue1852 subrepos with relative paths always push/pull relative to default
 
 Prepare a repo with subrepo
 
   $ hg init issue1852a
   $ cd issue1852a
   $ hg init sub/repo
   $ echo test > sub/repo/foo
   $ hg -R sub/repo add sub/repo/foo
   $ echo sub/repo = sub/repo > .hgsub
   $ hg add .hgsub
   $ hg ci -mtest
   committing subrepository sub/repo
   $ echo test >> sub/repo/foo
   $ hg ci -mtest
   committing subrepository sub/repo
   $ hg cat sub/repo/foo
   test
   test
   $ hg cat sub/repo/foo -Tjson | sed 's|\\\\|/|g'
   [
    {
     "abspath": "foo",
     "data": "test\ntest\n",
     "path": "sub/repo/foo"
    }
   ]
 
  non-exact match:
 
   $ hg cat -T '{path}\n' 'glob:**'
   .hgsub
   .hgsubstate
   sub/repo/foo
   $ hg cat -T '{path}\n' 're:^sub'
   sub/repo/foo
 
  missing subrepos in working directory:
 
   $ mkdir -p tmp/sub/repo
   $ hg cat -r 0 --output tmp/%p_p sub/repo/foo
   $ cat tmp/sub/repo/foo_p
   test
   $ mv sub/repo sub_
   $ hg cat sub/repo/baz
   skipping missing subrepository: sub/repo
   [1]
   $ rm -rf sub/repo
   $ mv sub_ sub/repo
   $ cd ..
 
 Create repo without default path, pull top repo, and see what happens on update
 
   $ hg init issue1852b
   $ hg -R issue1852b pull issue1852a
   pulling from issue1852a
   requesting all changes
   adding changesets
   adding manifests
   adding file changes
   added 2 changesets with 3 changes to 2 files
   new changesets 19487b456929:be5eb94e7215
   (run 'hg update' to get a working copy)
   $ hg -R issue1852b update
   abort: default path for subrepository not found (in subrepository "sub/repo")
   [255]
 
 Ensure a full traceback, not just the SubrepoAbort part
 
   $ hg -R issue1852b update --traceback 2>&1 | grep 'raise error\.Abort'
       raise error.Abort(_("default path for subrepository not found"))
 
 Pull -u now doesn't help
 
   $ hg -R issue1852b pull -u issue1852a
   pulling from issue1852a
   searching for changes
   no changes found
 
 Try the same, but with pull -u
 
   $ hg init issue1852c
   $ hg -R issue1852c pull -r0 -u issue1852a
   pulling from issue1852a
   adding changesets
   adding manifests
   adding file changes
   added 1 changesets with 2 changes to 2 files
   new changesets 19487b456929
   cloning subrepo sub/repo from issue1852a/sub/repo
   2 files updated, 0 files merged, 0 files removed, 0 files unresolved
 
 Try to push from the other side
 
   $ hg -R issue1852a push `pwd`/issue1852c
   pushing to $TESTTMP/issue1852c
   pushing subrepo sub/repo to $TESTTMP/issue1852c/sub/repo
   searching for changes
   no changes found
   searching for changes
   adding changesets
   adding manifests
   adding file changes
   added 1 changesets with 1 changes to 1 files
 
 Incoming and outgoing should not use the default path:
 
   $ hg clone -q issue1852a issue1852d
   $ hg -R issue1852d outgoing --subrepos issue1852c
   comparing with issue1852c
   searching for changes
   no changes found
   comparing with issue1852c/sub/repo
   searching for changes
   no changes found
   [1]
   $ hg -R issue1852d incoming --subrepos issue1852c
   comparing with issue1852c
   searching for changes
   no changes found
   comparing with issue1852c/sub/repo
   searching for changes
   no changes found
   [1]
 
 Check that merge of a new subrepo doesn't write the uncommitted state to
 .hgsubstate (issue4622)
 
   $ hg init issue1852a/addedsub
   $ echo zzz > issue1852a/addedsub/zz.txt
   $ hg -R issue1852a/addedsub ci -Aqm "initial ZZ"
 
   $ hg clone issue1852a/addedsub issue1852d/addedsub
   updating to branch default
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
 
   $ echo def > issue1852a/sub/repo/foo
   $ hg -R issue1852a ci -SAm 'tweaked subrepo'
   adding tmp/sub/repo/foo_p
   committing subrepository sub/repo
 
   $ echo 'addedsub = addedsub' >> issue1852d/.hgsub
   $ echo xyz > issue1852d/sub/repo/foo
   $ hg -R issue1852d pull -u
   pulling from $TESTTMP/issue1852a
   searching for changes
   adding changesets
   adding manifests
   adding file changes
   added 1 changesets with 2 changes to 2 files
   new changesets c82b79fdcc5b
    subrepository sub/repo diverged (local revision: f42d5c7504a8, remote revision: 46cd4aac504c)
   (M)erge, keep (l)ocal [working copy] or keep (r)emote [destination]? m
   pulling subrepo sub/repo from $TESTTMP/issue1852a/sub/repo
   searching for changes
   adding changesets
   adding manifests
   adding file changes
   added 1 changesets with 1 changes to 1 files
   new changesets 46cd4aac504c
    subrepository sources for sub/repo differ
   use (l)ocal source (f42d5c7504a8) or (r)emote source (46cd4aac504c)? l
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ cat issue1852d/.hgsubstate
   f42d5c7504a811dda50f5cf3e5e16c3330b87172 sub/repo
 
 Check status of files when none of them belong to the first
 subrepository:
 
   $ hg init subrepo-status
   $ cd subrepo-status
   $ hg init subrepo-1
   $ hg init subrepo-2
   $ cd subrepo-2
   $ touch file
   $ hg add file
   $ cd ..
   $ echo subrepo-1 = subrepo-1 > .hgsub
   $ echo subrepo-2 = subrepo-2 >> .hgsub
   $ hg add .hgsub
   $ hg ci -m 'Added subrepos'
   committing subrepository subrepo-2
   $ hg st subrepo-2/file
 
 Check that share works with subrepo
   $ hg --config extensions.share= share . ../shared
   updating working directory
   sharing subrepo subrepo-1 from $TESTTMP/subrepo-status/subrepo-1
   sharing subrepo subrepo-2 from $TESTTMP/subrepo-status/subrepo-2
   2 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ find ../shared/* | sort
   ../shared/subrepo-1
   ../shared/subrepo-1/.hg
   ../shared/subrepo-1/.hg/cache
   ../shared/subrepo-1/.hg/cache/storehash
   ../shared/subrepo-1/.hg/cache/storehash/* (glob)
   ../shared/subrepo-1/.hg/hgrc
   ../shared/subrepo-1/.hg/requires
   ../shared/subrepo-1/.hg/sharedpath
   ../shared/subrepo-2
   ../shared/subrepo-2/.hg
   ../shared/subrepo-2/.hg/branch
   ../shared/subrepo-2/.hg/cache
   ../shared/subrepo-2/.hg/cache/checkisexec (execbit !)
   ../shared/subrepo-2/.hg/cache/checklink (symlink !)
   ../shared/subrepo-2/.hg/cache/checklink-target (symlink !)
   ../shared/subrepo-2/.hg/cache/storehash
   ../shared/subrepo-2/.hg/cache/storehash/* (glob)
   ../shared/subrepo-2/.hg/dirstate
   ../shared/subrepo-2/.hg/hgrc
   ../shared/subrepo-2/.hg/requires
   ../shared/subrepo-2/.hg/sharedpath
   ../shared/subrepo-2/file
   $ hg -R ../shared in
   abort: repository default not found!
   [255]
   $ hg -R ../shared/subrepo-2 showconfig paths
   paths.default=$TESTTMP/subrepo-status/subrepo-2
   $ hg -R ../shared/subrepo-1 sum --remote
   parent: -1:000000000000 tip (empty repository)
   branch: default
   commit: (clean)
   update: (current)
   remote: (synced)
 
 Check hg update --clean
   $ cd $TESTTMP/t
   $ rm -r t/t.orig
   $ hg status -S --all
   C .hgsub
   C .hgsubstate
   C a
   C s/.hgsub
   C s/.hgsubstate
   C s/a
   C s/ss/a
   C t/t
   $ echo c1 > s/a
   $ cd s
   $ echo c1 > b
   $ echo c1 > c
   $ hg add b
   $ cd ..
   $ hg status -S
   M s/a
   A s/b
   ? s/c
   $ hg update -C
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   updated to "925c17564ef8: 13"
   2 other heads for branch "default"
   $ hg status -S
   ? s/b
   ? s/c
 
 Sticky subrepositories, no changes
   $ cd $TESTTMP/t
   $ hg id
   925c17564ef8 tip
   $ hg -R s id
   12a213df6fa9 tip
   $ hg -R t id
   52c0adc0515a tip
   $ hg update 11
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg id
   365661e5936a
   $ hg -R s id
   fc627a69481f
   $ hg -R t id
   e95bcfa18a35
 
 Sticky subrepositories, file changes
   $ touch s/f1
   $ touch t/f1
   $ hg add -S s/f1
   $ hg add -S t/f1
   $ hg id
   365661e5936a+
   $ hg -R s id
   fc627a69481f+
   $ hg -R t id
   e95bcfa18a35+
   $ hg update tip
    subrepository s diverged (local revision: fc627a69481f, remote revision: 12a213df6fa9)
   (M)erge, keep (l)ocal [working copy] or keep (r)emote [destination]? m
    subrepository sources for s differ
   use (l)ocal source (fc627a69481f) or (r)emote source (12a213df6fa9)? l
    subrepository t diverged (local revision: e95bcfa18a35, remote revision: 52c0adc0515a)
   (M)erge, keep (l)ocal [working copy] or keep (r)emote [destination]? m
    subrepository sources for t differ
   use (l)ocal source (e95bcfa18a35) or (r)emote source (52c0adc0515a)? l
   0 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg id
   925c17564ef8+ tip
   $ hg -R s id
   fc627a69481f+
   $ hg -R t id
   e95bcfa18a35+
   $ hg update --clean tip
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
 
 Sticky subrepository, revision updates
   $ hg id
   925c17564ef8 tip
   $ hg -R s id
   12a213df6fa9 tip
   $ hg -R t id
   52c0adc0515a tip
   $ cd s
   $ hg update -r -2
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ cd ../t
   $ hg update -r 2
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ cd ..
   $ hg update 10
    subrepository s diverged (local revision: 12a213df6fa9, remote revision: fc627a69481f)
   (M)erge, keep (l)ocal [working copy] or keep (r)emote [destination]? m
    subrepository t diverged (local revision: 52c0adc0515a, remote revision: 20a0db6fbf6c)
   (M)erge, keep (l)ocal [working copy] or keep (r)emote [destination]? m
    subrepository sources for t differ (in checked out version)
   use (l)ocal source (7af322bc1198) or (r)emote source (20a0db6fbf6c)? l
   0 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg id
   e45c8b14af55+
   $ hg -R s id
   02dcf1d70411
   $ hg -R t id
   7af322bc1198
 
 Sticky subrepository, file changes and revision updates
   $ touch s/f1
   $ touch t/f1
   $ hg add -S s/f1
   $ hg add -S t/f1
   $ hg id
   e45c8b14af55+
   $ hg -R s id
   02dcf1d70411+
   $ hg -R t id
   7af322bc1198+
   $ hg update tip
    subrepository s diverged (local revision: 12a213df6fa9, remote revision: 12a213df6fa9)
   (M)erge, keep (l)ocal [working copy] or keep (r)emote [destination]? m
    subrepository sources for s differ
   use (l)ocal source (02dcf1d70411) or (r)emote source (12a213df6fa9)? l
    subrepository t diverged (local revision: 52c0adc0515a, remote revision: 52c0adc0515a)
   (M)erge, keep (l)ocal [working copy] or keep (r)emote [destination]? m
    subrepository sources for t differ
   use (l)ocal source (7af322bc1198) or (r)emote source (52c0adc0515a)? l
   0 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg id
   925c17564ef8+ tip
   $ hg -R s id
   02dcf1d70411+
   $ hg -R t id
   7af322bc1198+
 
 Sticky repository, update --clean
   $ hg update --clean tip
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg id
   925c17564ef8 tip
   $ hg -R s id
   12a213df6fa9 tip
   $ hg -R t id
   52c0adc0515a tip
 
 Test subrepo already at intended revision:
   $ cd s
   $ hg update fc627a69481f
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ cd ..
   $ hg update 11
    subrepository s diverged (local revision: 12a213df6fa9, remote revision: fc627a69481f)
   (M)erge, keep (l)ocal [working copy] or keep (r)emote [destination]? m
   0 files updated, 0 files merged, 0 files removed, 0 files unresolved
   0 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg id -n
   11+
   $ hg -R s id
   fc627a69481f
   $ hg -R t id
   e95bcfa18a35
 
 Test that removing .hgsubstate doesn't break anything:
 
   $ hg rm -f .hgsubstate
   $ hg ci -mrm
   nothing changed
   [1]
   $ hg log -vr tip
   changeset:   13:925c17564ef8
   tag:         tip
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   files:       .hgsubstate
   description:
   13
   
   
 
 Test that removing .hgsub removes .hgsubstate:
 
   $ hg rm .hgsub
   $ hg ci -mrm2
   created new head
   $ hg log -vr tip
   changeset:   14:2400bccd50af
   tag:         tip
   parent:      11:365661e5936a
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   files:       .hgsub .hgsubstate
   description:
   rm2
   
   
 Test issue3153: diff -S with deleted subrepos
 
   $ hg diff --nodates -S -c .
   diff -r 365661e5936a -r 2400bccd50af .hgsub
   --- a/.hgsub
   +++ /dev/null
   @@ -1,2 +0,0 @@
   -s = s
   -t = t
   diff -r 365661e5936a -r 2400bccd50af .hgsubstate
   --- a/.hgsubstate
   +++ /dev/null
   @@ -1,2 +0,0 @@
   -fc627a69481fcbe5f1135069e8a3881c023e4cf5 s
   -e95bcfa18a358dc4936da981ebf4147b4cad1362 t
 
 Test behavior of add for explicit path in subrepo:
   $ cd ..
   $ hg init explicit
   $ cd explicit
   $ echo s = s > .hgsub
   $ hg add .hgsub
   $ hg init s
   $ hg ci -m0
 Adding with an explicit path in a subrepo adds the file
   $ echo c1 > f1
   $ echo c2 > s/f2
   $ hg st -S
   ? f1
   ? s/f2
   $ hg add s/f2
   $ hg st -S
   A s/f2
   ? f1
   $ hg ci -R s -m0
   $ hg ci -Am1
   adding f1
 Adding with an explicit path in a subrepo with -S has the same behavior
   $ echo c3 > f3
   $ echo c4 > s/f4
   $ hg st -S
   ? f3
   ? s/f4
   $ hg add -S s/f4
   $ hg st -S
   A s/f4
   ? f3
   $ hg ci -R s -m1
   $ hg ci -Ama2
   adding f3
 Adding without a path or pattern silently ignores subrepos
   $ echo c5 > f5
   $ echo c6 > s/f6
   $ echo c7 > s/f7
   $ hg st -S
   ? f5
   ? s/f6
   ? s/f7
   $ hg add
   adding f5
   $ hg st -S
   A f5
   ? s/f6
   ? s/f7
   $ hg ci -R s -Am2
   adding f6
   adding f7
   $ hg ci -m3
 Adding without a path or pattern with -S also adds files in subrepos
   $ echo c8 > f8
   $ echo c9 > s/f9
   $ echo c10 > s/f10
   $ hg st -S
   ? f8
   ? s/f10
   ? s/f9
   $ hg add -S
   adding f8
   adding s/f10
   adding s/f9
   $ hg st -S
   A f8
   A s/f10
   A s/f9
   $ hg ci -R s -m3
   $ hg ci -m4
 Adding with a pattern silently ignores subrepos
   $ echo c11 > fm11
   $ echo c12 > fn12
   $ echo c13 > s/fm13
   $ echo c14 > s/fn14
   $ hg st -S
   ? fm11
   ? fn12
   ? s/fm13
   ? s/fn14
   $ hg add 'glob:**fm*'
   adding fm11
   $ hg st -S
   A fm11
   ? fn12
   ? s/fm13
   ? s/fn14
   $ hg ci -R s -Am4
   adding fm13
   adding fn14
   $ hg ci -Am5
   adding fn12
 Adding with a pattern with -S also adds matches in subrepos
   $ echo c15 > fm15
   $ echo c16 > fn16
   $ echo c17 > s/fm17
   $ echo c18 > s/fn18
   $ hg st -S
   ? fm15
   ? fn16
   ? s/fm17
   ? s/fn18
   $ hg add -S 'glob:**fm*'
   adding fm15
   adding s/fm17
   $ hg st -S
   A fm15
   A s/fm17
   ? fn16
   ? s/fn18
   $ hg ci -R s -Am5
   adding fn18
   $ hg ci -Am6
   adding fn16
 
 Test behavior of forget for explicit path in subrepo:
 Forgetting an explicit path in a subrepo untracks the file
   $ echo c19 > s/f19
   $ hg add s/f19
   $ hg st -S
   A s/f19
   $ hg forget s/f19
   $ hg st -S
   ? s/f19
   $ rm s/f19
   $ cd ..
 
 Courtesy phases synchronisation to publishing server does not block the push
 (issue3781)
 
   $ cp -R main issue3781
   $ cp -R main issue3781-dest
   $ cd issue3781-dest/s
   $ hg phase tip # show we have draft changeset
   5: draft
   $ chmod a-w .hg/store/phaseroots # prevent phase push
   $ cd ../../issue3781
   $ cat >> .hg/hgrc << EOF
   > [paths]
   > default=../issue3781-dest/
   > EOF
   $ hg push --config devel.legacy.exchange=bundle1
   pushing to $TESTTMP/issue3781-dest
   pushing subrepo s to $TESTTMP/issue3781-dest/s
   searching for changes
   no changes found
   searching for changes
   no changes found
   [1]
 # clean the push cache
   $ rm s/.hg/cache/storehash/*
   $ hg push # bundle2+
   pushing to $TESTTMP/issue3781-dest
   pushing subrepo s to $TESTTMP/issue3781-dest/s
   searching for changes
   no changes found
   searching for changes
   no changes found
   [1]
   $ cd ..
 
 Test phase choice for newly created commit with "phases.subrepochecks"
 configuration
 
   $ cd t
   $ hg update -q -r 12
 
   $ cat >> s/ss/.hg/hgrc <<EOF
   > [phases]
   > new-commit = secret
   > EOF
   $ cat >> s/.hg/hgrc <<EOF
   > [phases]
   > new-commit = draft
   > EOF
   $ echo phasecheck1 >> s/ss/a
   $ hg -R s commit -S --config phases.checksubrepos=abort -m phasecheck1
   committing subrepository ss
   transaction abort!
   rollback completed
   abort: can't commit in draft phase conflicting secret from subrepository ss
   [255]
   $ echo phasecheck2 >> s/ss/a
   $ hg -R s commit -S --config phases.checksubrepos=ignore -m phasecheck2
   committing subrepository ss
   $ hg -R s/ss phase tip
   3: secret
   $ hg -R s phase tip
   6: draft
   $ echo phasecheck3 >> s/ss/a
   $ hg -R s commit -S -m phasecheck3
   committing subrepository ss
   warning: changes are committed in secret phase from subrepository ss
   $ hg -R s/ss phase tip
   4: secret
   $ hg -R s phase tip
   7: secret
 
   $ cat >> t/.hg/hgrc <<EOF
   > [phases]
   > new-commit = draft
   > EOF
   $ cat >> .hg/hgrc <<EOF
   > [phases]
   > new-commit = public
   > EOF
   $ echo phasecheck4 >>   s/ss/a
   $ echo phasecheck4 >>   t/t
   $ hg commit -S -m phasecheck4
   committing subrepository s
   committing subrepository s/ss
   warning: changes are committed in secret phase from subrepository ss
   committing subrepository t
   warning: changes are committed in secret phase from subrepository s
   created new head
   $ hg -R s/ss phase tip
   5: secret
   $ hg -R s phase tip
   8: secret
   $ hg -R t phase tip
   6: draft
   $ hg phase tip
   15: secret
 
   $ cd ..
 
 
 Test that commit --secret works on both repo and subrepo (issue4182)
 
   $ cd main
   $ echo secret >> b
   $ echo secret >> s/b
   $ hg commit --secret --subrepo -m "secret"
   committing subrepository s
   $ hg phase -r .
   6: secret
   $ cd s
   $ hg phase -r .
   6: secret
   $ cd ../../
 
 Test "subrepos" template keyword
 
   $ cd t
   $ hg update -q 15
   $ cat > .hgsub <<EOF
   > s = s
   > EOF
   $ hg commit -m "16"
   warning: changes are committed in secret phase from subrepository s
 
 (addition of ".hgsub" itself)
 
   $ hg diff --nodates -c 1 .hgsubstate
   diff -r f7b1eb17ad24 -r 7cf8cfea66e4 .hgsubstate
   --- /dev/null
   +++ b/.hgsubstate
   @@ -0,0 +1,1 @@
   +e4ece1bf43360ddc8f6a96432201a37b7cd27ae4 s
   $ hg log -r 1 --template "{p1node|short} {p2node|short}\n{subrepos % '{subrepo}\n'}"
   f7b1eb17ad24 000000000000
   s
 
 (modification of existing entry)
 
   $ hg diff --nodates -c 2 .hgsubstate
   diff -r 7cf8cfea66e4 -r df30734270ae .hgsubstate
   --- a/.hgsubstate
   +++ b/.hgsubstate
   @@ -1,1 +1,1 @@
   -e4ece1bf43360ddc8f6a96432201a37b7cd27ae4 s
   +dc73e2e6d2675eb2e41e33c205f4bdab4ea5111d s
   $ hg log -r 2 --template "{p1node|short} {p2node|short}\n{subrepos % '{subrepo}\n'}"
   7cf8cfea66e4 000000000000
   s
 
 (addition of entry)
 
   $ hg diff --nodates -c 5 .hgsubstate
   diff -r 7cf8cfea66e4 -r 1f14a2e2d3ec .hgsubstate
   --- a/.hgsubstate
   +++ b/.hgsubstate
   @@ -1,1 +1,2 @@
    e4ece1bf43360ddc8f6a96432201a37b7cd27ae4 s
   +60ca1237c19474e7a3978b0dc1ca4e6f36d51382 t
   $ hg log -r 5 --template "{p1node|short} {p2node|short}\n{subrepos % '{subrepo}\n'}"
   7cf8cfea66e4 000000000000
   t
 
 (removal of existing entry)
 
   $ hg diff --nodates -c 16 .hgsubstate
   diff -r 8bec38d2bd0b -r f2f70bc3d3c9 .hgsubstate
   --- a/.hgsubstate
   +++ b/.hgsubstate
   @@ -1,2 +1,1 @@
    0731af8ca9423976d3743119d0865097c07bdc1b s
   -e202dc79b04c88a636ea8913d9182a1346d9b3dc t
   $ hg log -r 16 --template "{p1node|short} {p2node|short}\n{subrepos % '{subrepo}\n'}"
   8bec38d2bd0b 000000000000
   t
 
 (merging)
 
   $ hg diff --nodates -c 9 .hgsubstate
   diff -r f6affe3fbfaa -r f0d2028bf86d .hgsubstate
   --- a/.hgsubstate
   +++ b/.hgsubstate
   @@ -1,1 +1,2 @@
    fc627a69481fcbe5f1135069e8a3881c023e4cf5 s
   +60ca1237c19474e7a3978b0dc1ca4e6f36d51382 t
   $ hg log -r 9 --template "{p1node|short} {p2node|short}\n{subrepos % '{subrepo}\n'}"
   f6affe3fbfaa 1f14a2e2d3ec
   t
 
 (removal of ".hgsub" itself)
 
   $ hg diff --nodates -c 8 .hgsubstate
   diff -r f94576341bcf -r 96615c1dad2d .hgsubstate
   --- a/.hgsubstate
   +++ /dev/null
   @@ -1,2 +0,0 @@
   -e4ece1bf43360ddc8f6a96432201a37b7cd27ae4 s
   -7af322bc1198a32402fe903e0b7ebcfc5c9bf8f4 t
   $ hg log -r 8 --template "{p1node|short} {p2node|short}\n{subrepos % '{subrepo}\n'}"
   f94576341bcf 000000000000
 
 Test that '[paths]' is configured correctly at subrepo creation
 
   $ cd $TESTTMP/tc
   $ cat > .hgsub <<EOF
   > # to clear bogus subrepo path 'bogus=[boguspath'
   > s = s
   > t = t
   > EOF
   $ hg update -q --clean null
   $ rm -rf s t
   $ cat >> .hg/hgrc <<EOF
   > [paths]
   > default-push = /foo/bar
   > EOF
   $ hg update -q
   $ cat s/.hg/hgrc
   [paths]
   default = $TESTTMP/t/s
   default-push = /foo/bar/s
   $ cat s/ss/.hg/hgrc
   [paths]
   default = $TESTTMP/t/s/ss
   default-push = /foo/bar/s/ss
   $ cat t/.hg/hgrc
   [paths]
   default = $TESTTMP/t/t
   default-push = /foo/bar/t
 
   $ cd $TESTTMP/t
   $ hg up -qC 0
   $ echo 'bar' > bar.txt
   $ hg ci -Am 'branch before subrepo add'
   adding bar.txt
   created new head
   $ hg merge -r "first(subrepo('s'))"
   2 files updated, 0 files merged, 0 files removed, 0 files unresolved
   (branch merge, don't forget to commit)
   $ hg status -S -X '.hgsub*'
   A s/a
   ? s/b
   ? s/c
   ? s/f1
   $ hg status -S --rev 'p2()'
   A bar.txt
   ? s/b
   ? s/c
   ? s/f1
   $ hg diff -S -X '.hgsub*' --nodates
   diff -r 000000000000 s/a
   --- /dev/null
   +++ b/s/a
   @@ -0,0 +1,1 @@
   +a
   $ hg diff -S --rev 'p2()' --nodates
   diff -r 7cf8cfea66e4 bar.txt
   --- /dev/null
   +++ b/bar.txt
   @@ -0,0 +1,1 @@
   +bar
 
   $ cd ..
 
 test for ssh exploit 2017-07-25
 
   $ cat >> $HGRCPATH << EOF
   > [ui]
   > ssh = sh -c "read l; read l; read l"
   > EOF
 
   $ hg init malicious-proxycommand
   $ cd malicious-proxycommand
   $ echo 's = [hg]ssh://-oProxyCommand=touch${IFS}owned/path' > .hgsub
   $ hg init s
   $ cd s
   $ echo init > init
   $ hg add
   adding init
   $ hg commit -m init
   $ cd ..
   $ hg add .hgsub
   $ hg ci -m 'add subrepo'
   $ cd ..
   $ hg clone malicious-proxycommand malicious-proxycommand-clone
   updating to branch default
   abort: potentially unsafe url: 'ssh://-oProxyCommand=touch${IFS}owned/path' (in subrepository "s")
   [255]
 
 also check that a percent encoded '-' (%2D) doesn't work
 
   $ cd malicious-proxycommand
   $ echo 's = [hg]ssh://%2DoProxyCommand=touch${IFS}owned/path' > .hgsub
   $ hg ci -m 'change url to percent encoded'
   $ cd ..
   $ rm -r malicious-proxycommand-clone
   $ hg clone malicious-proxycommand malicious-proxycommand-clone
   updating to branch default
   abort: potentially unsafe url: 'ssh://-oProxyCommand=touch${IFS}owned/path' (in subrepository "s")
   [255]
 
 also check for a pipe
 
   $ cd malicious-proxycommand
   $ echo 's = [hg]ssh://fakehost|touch${IFS}owned/path' > .hgsub
   $ hg ci -m 'change url to pipe'
   $ cd ..
   $ rm -r malicious-proxycommand-clone
   $ hg clone malicious-proxycommand malicious-proxycommand-clone
   updating to branch default
   abort: no suitable response from remote hg!
   [255]
   $ [ ! -f owned ] || echo 'you got owned'
 
 also check that a percent encoded '|' (%7C) doesn't work
 
   $ cd malicious-proxycommand
   $ echo 's = [hg]ssh://fakehost%7Ctouch%20owned/path' > .hgsub
   $ hg ci -m 'change url to percent encoded pipe'
   $ cd ..
   $ rm -r malicious-proxycommand-clone
   $ hg clone malicious-proxycommand malicious-proxycommand-clone
   updating to branch default
   abort: no suitable response from remote hg!
   [255]
   $ [ ! -f owned ] || echo 'you got owned'
 
 and bad usernames:
   $ cd malicious-proxycommand
   $ echo 's = [hg]ssh://-oProxyCommand=touch [e-mail]/path' > .hgsub
   $ hg ci -m 'owned username'
   $ cd ..
   $ rm -r malicious-proxycommand-clone
   $ hg clone malicious-proxycommand malicious-proxycommand-clone
   updating to branch default
   abort: potentially unsafe url: 'ssh://-oProxyCommand=touch [e-mail]/path' (in subrepository "s")
   [255]
+
+Test convert subrepositories including merge (issue5526):
+
+  $ hg init tconv
+  $ hg convert --config extensions.convert= -q t/s tconv/s
+  $ hg convert --config extensions.convert= -q t/s/ss tconv/s/ss
+  $ hg convert --config extensions.convert= -q t/t tconv/t
+
+ convert shouldn't fail because of pseudo filenode:
+
+  $ hg convert --config extensions.convert= t tconv
+  scanning source...
+  sorting...
+  converting...
+  17 0
+  16 1
+  15 2
+  14 3
+  13 4
+  12 5
+  11 6
+  10 7
+  9 8
+  8 9
+  7 10
+  6 11
+  5 12
+  4 13
+  3 rm2
+  2 phasecheck4
+  1 16
+  0 branch before subrepo add
+
+ converted .hgsubstate should point to valid nodes:
+
+  $ hg up -R tconv 9
+  3 files updated, 0 files merged, 0 files removed, 0 files unresolved
+  $ cat tconv/.hgsubstate
+  fc627a69481fcbe5f1135069e8a3881c023e4cf5 s
+  60ca1237c19474e7a3978b0dc1ca4e6f36d51382 t