merge: add debug diagnostics for findcopies

mercurial/merge.py

@@ -1,636 +1,659 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, incorporated herein by reference.
 
 from node import *
 from i18n import _
 import errno, util, os, tempfile, context, heapq
 
 def filemerge(repo, fw, fd, fo, wctx, mctx):
     """perform a 3-way merge in the working directory
 
     fw = original filename in the working directory
     fd = destination filename in the working directory
     fo = filename in other parent
     wctx, mctx = working and merge changecontexts
     """
 
     def temp(prefix, ctx):
         pre = "%s~%s." % (os.path.basename(ctx.path()), prefix)
         (fd, name) = tempfile.mkstemp(prefix=pre)
         data = repo.wwritedata(ctx.path(), ctx.data())
         f = os.fdopen(fd, "wb")
         f.write(data)
         f.close()
         return name
 
     fcm = wctx.filectx(fw)
     fcmdata = wctx.filectx(fd).data()
     fco = mctx.filectx(fo)
 
     if not fco.cmp(fcmdata): # files identical?
         return None
 
     fca = fcm.ancestor(fco)
     if not fca:
         fca = repo.filectx(fw, fileid=nullrev)
     a = repo.wjoin(fd)
     b = temp("base", fca)
     c = temp("other", fco)
 
     if fw != fo:
         repo.ui.status(_("merging %s and %s\n") % (fw, fo))
     else:
         repo.ui.status(_("merging %s\n") % fw)
 
     repo.ui.debug(_("my %s other %s ancestor %s\n") % (fcm, fco, fca))
 
     cmd = (os.environ.get("HGMERGE") or repo.ui.config("ui", "merge")
            or "hgmerge")
     r = util.system('%s "%s" "%s" "%s"' % (cmd, a, b, c), cwd=repo.root,
                     environ={'HG_FILE': fd,
                              'HG_MY_NODE': str(wctx.parents()[0]),
                              'HG_OTHER_NODE': str(mctx)})
     if r:
         repo.ui.warn(_("merging %s failed!\n") % fd)
 
     os.unlink(b)
     os.unlink(c)
     return r
 
 def checkunknown(wctx, mctx):
     "check for collisions between unknown files and files in mctx"
     man = mctx.manifest()
     for f in wctx.unknown():
         if f in man:
             if mctx.filectx(f).cmp(wctx.filectx(f).data()):
                 raise util.Abort(_("untracked local file '%s' differs"
                                    " from remote version") % f)
 
 def checkcollision(mctx):
     "check for case folding collisions in the destination context"
     folded = {}
     for fn in mctx.manifest():
         fold = fn.lower()
         if fold in folded:
             raise util.Abort(_("case-folding collision between %s and %s")
                              % (fn, folded[fold]))
         folded[fold] = fn
 
 def forgetremoved(wctx, mctx):
     """
     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.
     """
 
     action = []
     man = mctx.manifest()
     for f in wctx.deleted() + wctx.removed():
         if f not in man:
             action.append((f, "f"))
 
     return action
 
 def findcopies(repo, m1, m2, ma, limit):
     """
     Find moves and copies between m1 and m2 back to limit linkrev
     """
 
     def nonoverlap(d1, d2, d3):
         "Return list of elements in d1 not in d2 or d3"
         l = [d for d in d1 if d not in d3 and d not in d2]
         l.sort()
         return l
 
     def dirname(f):
         s = f.rfind("/")
         if s == -1:
             return ""
         return f[:s]
 
     def dirs(files):
         d = {}
         for f in files:
             f = dirname(f)
             while f not in d:
                 d[f] = True
                 f = dirname(f)
         return d
 
     wctx = repo.workingctx()
 
     def makectx(f, n):
         if len(n) == 20:
             return repo.filectx(f, fileid=n)
         return wctx.filectx(f)
     ctx = util.cachefunc(makectx)
 
     def findold(fctx):
         "find files that path was copied from, back to linkrev limit"
         old = {}
         seen = {}
         orig = fctx.path()
         visit = [fctx]
         while visit:
             fc = visit.pop()
             s = str(fc)
             if s in seen:
                 continue
             seen[s] = 1
             if fc.path() != orig and fc.path() not in old:
                 old[fc.path()] = 1
             if fc.rev() < limit:
                 continue
             visit += fc.parents()
 
         old = old.keys()
         old.sort()
         return old
 
     copy = {}
     fullcopy = {}
     diverge = {}
 
     def checkcopies(c, man, aman):
         '''check possible copies for filectx c'''
         for of in findold(c):
             fullcopy[c.path()] = of # remember for dir rename detection
             if of not in man: # original file not in other manifest?
                 if of in ma:
                     diverge.setdefault(of, []).append(c.path())
                 continue
             # if the original file is unchanged on the other branch,
             # no merge needed
             if man[of] == aman.get(of):
                 continue
             c2 = ctx(of, man[of])
             ca = c.ancestor(c2)
             if not ca: # unrelated?
                 continue
             # named changed on only one side?
             if ca.path() == c.path() or ca.path() == c2.path():
                 if c == ca or c2 == ca: # no merge needed, ignore copy
                     continue
                 copy[c.path()] = of
 
     if not repo.ui.configbool("merge", "followcopies", True):
         return {}, {}
 
     # avoid silly behavior for update from empty dir
     if not m1 or not m2 or not ma:
         return {}, {}
 
+    repo.ui.debug(_("  searching for copies back to rev %d\n") % limit)
+
     u1 = nonoverlap(m1, m2, ma)
     u2 = nonoverlap(m2, m1, ma)
 
+    if u1:
+        repo.ui.debug(_("  unmatched files in local:\n   %s\n")
+                      % "\n   ".join(u1))
+    if u2:
+        repo.ui.debug(_("  unmatched files in other:\n   %s\n")
+                      % "\n   ".join(u2))
+
     for f in u1:
         checkcopies(ctx(f, m1[f]), m2, ma)
 
     for f in u2:
         checkcopies(ctx(f, m2[f]), m1, ma)
 
     d2 = {}
     for of, fl in diverge.items():
         for f in fl:
             fo = list(fl)
             fo.remove(f)
             d2[f] = (of, fo)
 
+    if fullcopy:
+        repo.ui.debug(_("  all copies found (* = to merge, ! = divergent):\n"))
+        for f in fullcopy:
+            note = ""
+            if f in copy: note += "*"
+            if f in diverge: note += "!"
+            repo.ui.debug(_("   %s -> %s %s\n") % (f, fullcopy[f], note))
+
     if not fullcopy or not repo.ui.configbool("merge", "followdirs", True):
         return copy, diverge
 
+    repo.ui.debug(_("  checking for directory renames\n"))
+
     # generate a directory move map
     d1, d2 = dirs(m1), dirs(m2)
     invalid = {}
     dirmove = {}
 
     # examine each file copy for a potential directory move, which is
     # when all the files in a directory are moved to a new directory
     for dst, src in fullcopy.items():
         dsrc, ddst = dirname(src), dirname(dst)
         if dsrc in invalid:
             # already seen to be uninteresting
             continue
         elif dsrc in d1 and ddst in d1:
             # directory wasn't entirely moved locally
             invalid[dsrc] = True
         elif dsrc in d2 and ddst in d2:
             # directory wasn't entirely moved remotely
             invalid[dsrc] = True
         elif dsrc in dirmove and dirmove[dsrc] != ddst:
             # files from the same directory moved to two different places
             invalid[dsrc] = True
         else:
             # looks good so far
             dirmove[dsrc + "/"] = ddst + "/"
 
     for i in invalid:
         if i in dirmove:
             del dirmove[i]
 
     del d1, d2, invalid
 
     if not dirmove:
         return copy, diverge
 
+    for d in dirmove:
+        repo.ui.debug(_("  dir %s -> %s\n") % (d, dirmove[d]))
+
     # check unaccounted nonoverlapping files against directory moves
     for f in u1 + u2:
         if f not in fullcopy:
             for d in dirmove:
                 if f.startswith(d):
                     # new file added in a directory that was moved, move it
                     copy[f] = dirmove[d] + f[len(d):]
+                    repo.ui.debug(_("  file %s -> %s\n") % (f, copy[f]))
                     break
 
     return copy, diverge
 
 def symmetricdifference(repo, rev1, rev2):
     """symmetric difference of the sets of ancestors of rev1 and rev2
     
     I.e. revisions that are ancestors of rev1 or rev2, but not both.
     """
     # basic idea:
     # - mark rev1 and rev2 with different colors
     # - walk the graph in topological order with the help of a heap;
     #   for each revision r:
     #     - if r has only one color, we want to return it
     #     - add colors[r] to its parents
     #
     # We keep track of the number of revisions in the heap that
     # we may be interested in.  We stop walking the graph as soon
     # as this number reaches 0.
     WHITE = 1
     BLACK = 2
     ALLCOLORS = WHITE | BLACK
     colors = {rev1: WHITE, rev2: BLACK}
 
     cl = repo.changelog
 
     visit = [-rev1, -rev2]
     heapq.heapify(visit)
     n_wanted = len(visit)
     ret = []
 
     while n_wanted:
         r = -heapq.heappop(visit)
         wanted = colors[r] != ALLCOLORS
         n_wanted -= wanted
         if wanted:
             ret.append(r)
 
         for p in cl.parentrevs(r):
             if p == nullrev:
                 continue
             if p not in colors:
                 # first time we see p; add it to visit
                 n_wanted += wanted
                 colors[p] = colors[r]
                 heapq.heappush(visit, -p)
             elif colors[p] != ALLCOLORS and colors[p] != colors[r]:
                 # at first we thought we wanted p, but now
                 # we know we don't really want it
                 n_wanted -= 1
                 colors[p] |= colors[r]
 
         del colors[r]
 
     return ret
 
 def manifestmerge(repo, p1, p2, pa, overwrite, partial):
     """
     Merge p1 and p2 with ancestor ma and generate merge action list
 
     overwrite = whether we clobber working files
     partial = function to filter file lists
     """
 
     repo.ui.note(_("resolving manifests\n"))
     repo.ui.debug(_(" overwrite %s partial %s\n") % (overwrite, bool(partial)))
     repo.ui.debug(_(" ancestor %s local %s remote %s\n") % (pa, p1, p2))
 
     m1 = p1.manifest()
     m2 = p2.manifest()
     ma = pa.manifest()
     backwards = (pa == p2)
     action = []
     copy = {}
     diverge = {}
 
     def fmerge(f, f2=None, fa=None):
         """merge flags"""
         if not f2:
             f2 = f
             fa = f
         a, b, c = ma.execf(fa), m1.execf(f), m2.execf(f2)
         if ((a^b) | (a^c)) ^ a:
             return 'x'
         a, b, c = ma.linkf(fa), m1.linkf(f), m2.linkf(f2)
         if ((a^b) | (a^c)) ^ a:
             return 'l'
         return ''
 
     def act(msg, m, f, *args):
         repo.ui.debug(" %s: %s -> %s\n" % (f, msg, m))
         action.append((f, m) + args)
 
     if not (backwards or overwrite):
         rev1 = p1.rev()
         if rev1 is None:
             # p1 is a workingctx
             rev1 = p1.parents()[0].rev()
         limit = min(symmetricdifference(repo, rev1, p2.rev()))
         copy, diverge = findcopies(repo, m1, m2, ma, limit)
 
     for of, fl in diverge.items():
         act("divergent renames", "dr", of, fl)
 
     copied = dict.fromkeys(copy.values())
 
     # Compare manifests
     for f, n in m1.iteritems():
         if partial and not partial(f):
             continue
         if f in m2:
             # are files different?
             if n != m2[f]:
                 a = ma.get(f, nullid)
                 # are both different from the ancestor?
                 if not overwrite and n != a and m2[f] != a:
                     act("versions differ", "m", f, f, f, fmerge(f), False)
                 # are we clobbering?
                 # is remote's version newer?
                 # or are we going back in time and clean?
                 elif overwrite or m2[f] != a or (backwards and not n[20:]):
                     act("remote is newer", "g", f, m2.flags(f))
                 # local is newer, not overwrite, check mode bits
                 elif fmerge(f) != m1.flags(f):
                     act("update permissions", "e", f, m2.flags(f))
             # contents same, check mode bits
             elif m1.flags(f) != m2.flags(f):
                 if overwrite or fmerge(f) != m1.flags(f):
                     act("update permissions", "e", f, m2.flags(f))
         elif f in copied:
             continue
         elif f in copy:
             f2 = copy[f]
             if f2 not in m2: # directory rename
                 act("remote renamed directory to " + f2, "d",
                     f, None, f2, m1.flags(f))
             elif f2 in m1: # case 2 A,B/B/B
                 act("local copied to " + f2, "m",
                     f, f2, f, fmerge(f, f2, f2), False)
             else: # case 4,21 A/B/B
                 act("local moved to " + f2, "m",
                     f, f2, f, fmerge(f, f2, f2), False)
         elif f in ma:
             if n != ma[f] and not overwrite:
                 if repo.ui.prompt(
                     (_(" local changed %s which remote deleted\n") % f) +
                     _("(k)eep or (d)elete?"), _("[kd]"), _("k")) == _("d"):
                     act("prompt delete", "r", f)
             else:
                 act("other deleted", "r", f)
         else:
             # file is created on branch or in working directory
             if (overwrite and n[20:] != "u") or (backwards and not n[20:]):
                 act("remote deleted", "r", f)
 
     for f, n in m2.iteritems():
         if partial and not partial(f):
             continue
         if f in m1:
             continue
         if f in copied:
             continue
         if f in copy:
             f2 = copy[f]
             if f2 not in m1: # directory rename
                 act("local renamed directory to " + f2, "d",
                     None, f, f2, m2.flags(f))
             elif f2 in m2: # rename case 1, A/A,B/A
                 act("remote copied to " + f, "m",
                     f2, f, f, fmerge(f2, f, f2), False)
             else: # case 3,20 A/B/A
                 act("remote moved to " + f, "m",
                     f2, f, f, fmerge(f2, f, f2), True)
         elif f in ma:
             if overwrite or backwards:
                 act("recreating", "g", f, m2.flags(f))
             elif n != ma[f]:
                 if repo.ui.prompt(
                     (_("remote changed %s which local deleted\n") % f) +
                     _("(k)eep or (d)elete?"), _("[kd]"), _("k")) == _("k"):
                     act("prompt recreating", "g", f, m2.flags(f))
         else:
             act("remote created", "g", f, m2.flags(f))
 
     return action
 
 def applyupdates(repo, action, wctx, mctx):
     "apply the merge action list to the working directory"
 
     updated, merged, removed, unresolved = 0, 0, 0, 0
     action.sort()
     # prescan for copy/renames
     for a in action:
         f, m = a[:2]
         if m == 'm': # merge
             f2, fd, flags, move = a[2:]
             if f != fd:
                 repo.ui.debug(_("copying %s to %s\n") % (f, fd))
                 repo.wwrite(fd, repo.wread(f), flags)
 
     audit_path = util.path_auditor(repo.root)
 
     for a in action:
         f, m = a[:2]
         if f and f[0] == "/":
             continue
         if m == "r": # remove
             repo.ui.note(_("removing %s\n") % f)
             audit_path(f)
             try:
                 util.unlink(repo.wjoin(f))
             except OSError, inst:
                 if inst.errno != errno.ENOENT:
                     repo.ui.warn(_("update failed to remove %s: %s!\n") %
                                  (f, inst.strerror))
             removed += 1
         elif m == "m": # merge
             f2, fd, flags, move = a[2:]
             r = filemerge(repo, f, fd, f2, wctx, mctx)
             if r > 0:
                 unresolved += 1
             else:
                 if r is None:
                     updated += 1
                 else:
                     merged += 1
             util.set_exec(repo.wjoin(fd), "x" in flags)
             if f != fd and move and util.lexists(repo.wjoin(f)):
                 repo.ui.debug(_("removing %s\n") % f)
                 os.unlink(repo.wjoin(f))
         elif m == "g": # get
             flags = a[2]
             repo.ui.note(_("getting %s\n") % f)
             t = mctx.filectx(f).data()
             repo.wwrite(f, t, flags)
             updated += 1
         elif m == "d": # directory rename
             f2, fd, flags = a[2:]
             if f:
                 repo.ui.note(_("moving %s to %s\n") % (f, fd))
                 t = wctx.filectx(f).data()
                 repo.wwrite(fd, t, flags)
                 util.unlink(repo.wjoin(f))
             if f2:
                 repo.ui.note(_("getting %s to %s\n") % (f2, fd))
                 t = mctx.filectx(f2).data()
                 repo.wwrite(fd, t, flags)
             updated += 1
         elif m == "dr": # divergent renames
             fl = a[2]
             repo.ui.warn("warning: detected divergent renames of %s to:\n" % f)
             for nf in fl:
                 repo.ui.warn(" %s\n" % nf)
         elif m == "e": # exec
             flags = a[2]
             util.set_exec(repo.wjoin(f), flags)
 
     return updated, merged, removed, unresolved
 
 def recordupdates(repo, action, branchmerge):
     "record merge actions to the dirstate"
 
     for a in action:
         f, m = a[:2]
         if m == "r": # remove
             if branchmerge:
                 repo.dirstate.remove(f)
             else:
                 repo.dirstate.forget(f)
         elif m == "f": # forget
             repo.dirstate.forget(f)
         elif m in "ge": # get or exec change
             if branchmerge:
                 repo.dirstate.normaldirty(f)
             else:
                 repo.dirstate.normal(f)
         elif m == "m": # merge
             f2, fd, flag, move = a[2:]
             if branchmerge:
                 # We've done a branch merge, mark this file as merged
                 # so that we properly record the merger later
                 repo.dirstate.merge(fd)
                 if f != f2: # copy/rename
                     if move:
                         repo.dirstate.remove(f)
                     if f != fd:
                         repo.dirstate.copy(f, fd)
                     else:
                         repo.dirstate.copy(f2, fd)
             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.
                 repo.dirstate.normallookup(fd)
                 if move:
                     repo.dirstate.forget(f)
         elif m == "d": # directory rename
             f2, fd, flag = a[2:]
             if not f2 and f not in repo.dirstate:
                 # untracked file moved
                 continue
             if branchmerge:
                 repo.dirstate.add(fd)
                 if f:
                     repo.dirstate.remove(f)
                     repo.dirstate.copy(f, fd)
                 if f2:
                     repo.dirstate.copy(f2, fd)
             else:
                 repo.dirstate.normal(fd)
                 if f:
                     repo.dirstate.forget(f)
 
 def update(repo, node, branchmerge, force, partial):
     """
     Perform a merge between the working directory and the given node
 
     branchmerge = whether to merge between branches
     force = whether to force branch merging or file overwriting
     partial = a function to filter file lists (dirstate not updated)
     """
 
     wlock = repo.wlock()
     try:
         wc = repo.workingctx()
         if node is None:
             # tip of current branch
             try:
                 node = repo.branchtags()[wc.branch()]
             except KeyError:
                 raise util.Abort(_("branch %s not found") % wc.branch())
         overwrite = force and not branchmerge
         forcemerge = force and branchmerge
         pl = wc.parents()
         p1, p2 = pl[0], repo.changectx(node)
         pa = p1.ancestor(p2)
         fp1, fp2, xp1, xp2 = p1.node(), p2.node(), str(p1), str(p2)
         fastforward = False
 
         ### check phase
         if not overwrite and len(pl) > 1:
             raise util.Abort(_("outstanding uncommitted merges"))
         if pa == p1 or pa == p2: # is there a linear path from p1 to p2?
             if branchmerge:
                 if p1.branch() != p2.branch() and pa != p2:
                     fastforward = True
                 else:
                     raise util.Abort(_("there is nothing to merge, just use "
                                        "'hg update' or look at 'hg heads'"))
         elif not (overwrite or branchmerge):
             raise util.Abort(_("update spans branches, use 'hg merge' "
                                "or 'hg update -C' to lose changes"))
         if branchmerge and not forcemerge:
             if wc.files():
                 raise util.Abort(_("outstanding uncommitted changes"))
 
         ### calculate phase
         action = []
         if not force:
             checkunknown(wc, p2)
         if not util.checkfolding(repo.path):
             checkcollision(p2)
         if not branchmerge:
             action += forgetremoved(wc, p2)
         action += manifestmerge(repo, wc, p2, pa, overwrite, partial)
 
         ### apply phase
         if not branchmerge: # just jump to the new rev
             fp1, fp2, xp1, xp2 = fp2, nullid, xp2, ''
         if not partial:
             repo.hook('preupdate', throw=True, parent1=xp1, parent2=xp2)
 
         stats = applyupdates(repo, action, wc, p2)
 
         if not partial:
             recordupdates(repo, action, branchmerge)
             repo.dirstate.setparents(fp1, fp2)
             if not branchmerge and not fastforward:
                 repo.dirstate.setbranch(p2.branch())
             repo.hook('update', parent1=xp1, parent2=xp2, error=stats[3])
 
         return stats
     finally:
         del wlock

tests/test-copy-move-merge.out

@@ -1,23 +1,31 b''
 1 files updated, 0 files merged, 2 files removed, 0 files unresolved
 resolving manifests
  overwrite None partial False
  ancestor 583c7b748052 local fb3948d97f07+ remote 40da226db0f0
+  searching for copies back to rev 1
+  unmatched files in other:
+   b
+   c
+  all copies found (* = to merge, ! = divergent):
+   c -> a *
+   b -> a *
+  checking for directory renames
  a: remote moved to c -> m
  a: remote moved to b -> m
 copying a to b
 copying a to c
 merging a and b
 my a@fb3948d97f07+ other b@40da226db0f0 ancestor a@583c7b748052
 removing a
 merging a and c
 my a@fb3948d97f07+ other c@40da226db0f0 ancestor a@583c7b748052
 0 files updated, 2 files merged, 0 files removed, 0 files unresolved
 (branch merge, don't forget to commit)
 -- b --
 0
 1
 2
 -- c --
 0
 1
 2

tests/test-double-merge.out

@@ -1,20 +1,26 b''
 resolving manifests
  overwrite None partial False
  ancestor 310fd17130da local 2092631ce82b+ remote 7731dad1c2b9
+  searching for copies back to rev 1
+  unmatched files in other:
+   bar
+  all copies found (* = to merge, ! = divergent):
+   bar -> foo *
+  checking for directory renames
  foo: versions differ -> m
  foo: remote copied to bar -> m
 copying foo to bar
 merging foo and bar
 my foo@2092631ce82b+ other bar@7731dad1c2b9 ancestor foo@310fd17130da
 merging foo
 my foo@2092631ce82b+ other foo@7731dad1c2b9 ancestor foo@310fd17130da
 0 files updated, 2 files merged, 0 files removed, 0 files unresolved
 (branch merge, don't forget to commit)
 -- foo --
 line 0
 line 1
 line 2-1
 -- bar --
 line 0
 line 1
 line 2-2

tests/test-issue522.out

@@ -1,17 +1,20 b''
 reverting foo
 changeset 2:4d9e78aaceee backs out changeset 1:b515023e500e
 1 files updated, 0 files merged, 0 files removed, 0 files unresolved
 resolving manifests
  overwrite None partial False
  ancestor bbd179dfa0a7 local 71766447bdbb+ remote 4d9e78aaceee
+  searching for copies back to rev 1
+  unmatched files in local:
+   bar
  foo: remote is newer -> g
 getting foo
 1 files updated, 0 files merged, 0 files removed, 0 files unresolved
 (branch merge, don't forget to commit)
 n   0         -2 unset             foo
 M foo
 c6fc755d7e68f49f880599da29f15add41f42f5a 644 foo
    rev    offset  length   base linkrev nodeid       p1           p2
      0         0       5      0       0 2ed2a3912a0b 000000000000 000000000000
      1         5       9      1       1 6f4310b00b9a 2ed2a3912a0b 000000000000
      2        14       5      2       2 c6fc755d7e68 6f4310b00b9a 000000000000

tests/test-issue672.out

@@ -1,33 +1,51 b''
 adding 1
 adding 2
 1 files updated, 0 files merged, 1 files removed, 0 files unresolved
 resolving manifests
  overwrite None partial False
  ancestor 81f4b099af3d local c64f439569a9+ remote 2f8037f47a5c
+  searching for copies back to rev 1
+  unmatched files in other:
+   1a
+  all copies found (* = to merge, ! = divergent):
+   1a -> 1 
+  checking for directory renames
  1: other deleted -> r
  1a: remote created -> g
 removing 1
 getting 1a
 1 files updated, 0 files merged, 1 files removed, 0 files unresolved
 (branch merge, don't forget to commit)
 1 files updated, 0 files merged, 1 files removed, 0 files unresolved
 1 files updated, 0 files merged, 1 files removed, 0 files unresolved
 resolving manifests
  overwrite None partial False
  ancestor c64f439569a9 local ac7575e3c052+ remote 746e9549ea96
+  searching for copies back to rev 1
+  unmatched files in local:
+   1a
+  all copies found (* = to merge, ! = divergent):
+   1a -> 1 *
+  checking for directory renames
  1a: local moved to 1 -> m
 merging 1a and 1
 my 1a@ac7575e3c052+ other 1@746e9549ea96 ancestor 1@81f4b099af3d
 0 files updated, 1 files merged, 0 files removed, 0 files unresolved
 (branch merge, don't forget to commit)
 1 files updated, 0 files merged, 1 files removed, 0 files unresolved
 resolving manifests
  overwrite None partial False
  ancestor c64f439569a9 local 746e9549ea96+ remote ac7575e3c052
+  searching for copies back to rev 1
+  unmatched files in other:
+   1a
+  all copies found (* = to merge, ! = divergent):
+   1a -> 1 *
+  checking for directory renames
  1: remote moved to 1a -> m
 copying 1 to 1a
 merging 1 and 1a
 my 1@746e9549ea96+ other 1a@2f8037f47a5c ancestor 1@81f4b099af3d
 removing 1
 0 files updated, 1 files merged, 0 files removed, 0 files unresolved
 (branch merge, don't forget to commit)

tests/test-merge-commit.out

@@ -1,83 +1,85 b''
 1 files updated, 0 files merged, 0 files removed, 0 files unresolved
 merging bar and foo
 0 files updated, 1 files merged, 0 files removed, 0 files unresolved
 (branch merge, don't forget to commit)
 % contents of bar should be line0 line1 line2
 line0
 line1
 line2
    rev    offset  length   base linkrev nodeid       p1           p2
      0         0      77      0       2 da78c0659611 000000000000 000000000000
      1        77      76      0       3 4b358025380b 000000000000 da78c0659611
 bar renamed from foo:9e25c27b87571a1edee5ae4dddee5687746cc8e2
    rev    offset  length   base linkrev nodeid       p1           p2
      0         0       7      0       0 690b295714ae 000000000000 000000000000
      1         7      13      1       1 9e25c27b8757 690b295714ae 000000000000
 1 files updated, 0 files merged, 0 files removed, 0 files unresolved
 4:2d2f9a22c82b 2:0a3ab4856510 
 3:7d3b554bfdf1 2:0a3ab4856510 1:5cd961e4045d 
 2:0a3ab4856510 0:2665aaee66e9 
 1:5cd961e4045d 
 0:2665aaee66e9 
 % this should use bar@rev2 as the ancestor
 resolving manifests
  overwrite None partial False
  ancestor 0a3ab4856510 local 2d2f9a22c82b+ remote 7d3b554bfdf1
+  searching for copies back to rev 1
  bar: versions differ -> m
 merging bar
 my bar@2d2f9a22c82b+ other bar@7d3b554bfdf1 ancestor bar@0a3ab4856510
 0 files updated, 1 files merged, 0 files removed, 0 files unresolved
 (branch merge, don't forget to commit)
 % contents of bar should be line1 line2
 line1
 line2
    rev    offset  length   base linkrev nodeid       p1           p2
      0         0      77      0       2 da78c0659611 000000000000 000000000000
      1        77      76      0       3 4b358025380b 000000000000 da78c0659611
      2       153       7      2       4 4defe5eec418 da78c0659611 000000000000
      3       160      13      3       5 4663501da27b 4defe5eec418 4b358025380b
 
 
 requesting all changes
 adding changesets
 adding manifests
 adding file changes
 added 3 changesets with 3 changes to 2 files (+1 heads)
 1 files updated, 0 files merged, 0 files removed, 0 files unresolved
 merging foo and bar
 0 files updated, 1 files merged, 0 files removed, 0 files unresolved
 (branch merge, don't forget to commit)
 % contents of bar should be line0 line1 line2
 line0
 line1
 line2
    rev    offset  length   base linkrev nodeid       p1           p2
      0         0      77      0       2 da78c0659611 000000000000 000000000000
      1        77      76      0       3 4b358025380b 000000000000 da78c0659611
 bar renamed from foo:9e25c27b87571a1edee5ae4dddee5687746cc8e2
    rev    offset  length   base linkrev nodeid       p1           p2
      0         0       7      0       0 690b295714ae 000000000000 000000000000
      1         7      13      1       1 9e25c27b8757 690b295714ae 000000000000
 1 files updated, 0 files merged, 0 files removed, 0 files unresolved
 4:2d2f9a22c82b 2:0a3ab4856510 
 3:96ab80c60897 1:5cd961e4045d 2:0a3ab4856510 
 2:0a3ab4856510 0:2665aaee66e9 
 1:5cd961e4045d 
 0:2665aaee66e9 
 % this should use bar@rev2 as the ancestor
 resolving manifests
  overwrite None partial False
  ancestor 0a3ab4856510 local 2d2f9a22c82b+ remote 96ab80c60897
+  searching for copies back to rev 1
  bar: versions differ -> m
 merging bar
 my bar@2d2f9a22c82b+ other bar@96ab80c60897 ancestor bar@0a3ab4856510
 0 files updated, 1 files merged, 0 files removed, 0 files unresolved
 (branch merge, don't forget to commit)
 % contents of bar should be line1 line2
 line1
 line2
    rev    offset  length   base linkrev nodeid       p1           p2
      0         0      77      0       2 da78c0659611 000000000000 000000000000
      1        77      76      0       3 4b358025380b 000000000000 da78c0659611
      2       153       7      2       4 4defe5eec418 da78c0659611 000000000000
      3       160      13      3       5 4663501da27b 4defe5eec418 4b358025380b

tests/test-merge7.out

@@ -1,77 +1,78 b''
 1 files updated, 0 files merged, 0 files removed, 0 files unresolved
 pulling from ../test-a
 searching for changes
 adding changesets
 adding manifests
 adding file changes
 added 1 changesets with 1 changes to 1 files (+1 heads)
 (run 'hg heads' to see heads, 'hg merge' to merge)
 warning: conflicts during merge.
 merging test.txt
 merging test.txt failed!
 0 files updated, 0 files merged, 0 files removed, 1 files unresolved
 There are unresolved merges, you can redo the full merge using:
   hg update -C 1
   hg merge 2
 pulling from ../test-a
 searching for changes
 adding changesets
 adding manifests
 adding file changes
 added 1 changesets with 1 changes to 1 files (+1 heads)
 (run 'hg heads' to see heads, 'hg merge' to merge)
 warning: conflicts during merge.
 resolving manifests
  overwrite None partial False
  ancestor faaea63e63a9 local 451c744aabcc+ remote a070d41e8360
+  searching for copies back to rev 1
  test.txt: versions differ -> m
 merging test.txt
 my test.txt@451c744aabcc+ other test.txt@a070d41e8360 ancestor test.txt@faaea63e63a9
 merging test.txt failed!
 0 files updated, 0 files merged, 0 files removed, 1 files unresolved
 There are unresolved merges, you can redo the full merge using:
   hg update -C 3
   hg merge 4
 one
 <<<<<<< my
 two-point-five
 =======
 two-point-one
 >>>>>>> other
 three
    rev    offset  length   base linkrev nodeid       p1           p2
      0         0       7      0       0 01365c4cca56 000000000000 000000000000
      1         7       9      1       1 7b013192566a 01365c4cca56 000000000000
      2        16      15      2       2 8fe46a3eb557 01365c4cca56 000000000000
      3        31      27      2       3 fc3148072371 7b013192566a 8fe46a3eb557
      4        58      25      4       4 d40249267ae3 8fe46a3eb557 000000000000
 changeset:   4:a070d41e8360
 tag:         tip
 parent:      2:faaea63e63a9
 user:        test
 date:        Mon Jan 12 13:46:40 1970 +0000
 summary:     two -> two-point-one
 
 changeset:   3:451c744aabcc
 parent:      1:e409be6afcc0
 parent:      2:faaea63e63a9
 user:        test
 date:        Mon Jan 12 13:46:40 1970 +0000
 summary:     Merge 1
 
 changeset:   2:faaea63e63a9
 parent:      0:095c92b91f1a
 user:        test
 date:        Mon Jan 12 13:46:40 1970 +0000
 summary:     Numbers as words
 
 changeset:   1:e409be6afcc0
 user:        test
 date:        Mon Jan 12 13:46:40 1970 +0000
 summary:     2 -> 2.5
 
 changeset:   0:095c92b91f1a
 user:        test
 date:        Mon Jan 12 13:46:40 1970 +0000
 summary:     Initial
 

tests/test-rename-dir-merge.out

@@ -1,44 +1,68 b''
 adding a/a
 adding a/b
 0 files updated, 0 files merged, 0 files removed, 0 files unresolved
 copying a/a to b/a
 copying a/b to b/b
 removing a/a
 removing a/b
 2 files updated, 0 files merged, 2 files removed, 0 files unresolved
 resolving manifests
  overwrite None partial False
  ancestor f9b20c0d4c51 local ce36d17b18fb+ remote 55119e611c80
+  searching for copies back to rev 1
+  unmatched files in local:
+   a/c
+  unmatched files in other:
+   b/a
+   b/b
+  all copies found (* = to merge, ! = divergent):
+   b/a -> a/a 
+   b/b -> a/b 
+  checking for directory renames
+  dir a/ -> b/
+  file a/c -> b/c
  a/c: remote renamed directory to b/c -> d
  a/b: other deleted -> r
  a/a: other deleted -> r
  b/a: remote created -> g
  b/b: remote created -> g
 removing a/a
 removing a/b
 moving a/c to b/c
 getting b/a
 getting b/b
 3 files updated, 0 files merged, 2 files removed, 0 files unresolved
 (branch merge, don't forget to commit)
 a/* b/a b/b b/c
 M b/a
 M b/b
 A b/c
   a/c
 R a/a
 R a/b
 R a/c
 b/c renamed from a/c:354ae8da6e890359ef49ade27b68bbc361f3ca88
 0 files updated, 0 files merged, 1 files removed, 0 files unresolved
 resolving manifests
  overwrite None partial False
  ancestor f9b20c0d4c51 local 55119e611c80+ remote ce36d17b18fb
+  searching for copies back to rev 1
+  unmatched files in local:
+   b/a
+   b/b
+  unmatched files in other:
+   a/c
+  all copies found (* = to merge, ! = divergent):
+   b/a -> a/a 
+   b/b -> a/b 
+  checking for directory renames
+  dir a/ -> b/
+  file a/c -> b/c
  None: local renamed directory to b/c -> d
 getting a/c to b/c
 1 files updated, 0 files merged, 0 files removed, 0 files unresolved
 (branch merge, don't forget to commit)
 a/* b/a b/b b/c
 A b/c
   a/c
 b/c renamed from a/c:354ae8da6e890359ef49ade27b68bbc361f3ca88

tests/test-rename-merge1.out

@@ -1,29 +1,40 b''
 checkout
 2 files updated, 0 files merged, 2 files removed, 0 files unresolved
 merge
 resolving manifests
  overwrite None partial False
  ancestor af1939970a1c local f26ec4fc3fa3+ remote 8e765a822af2
+  searching for copies back to rev 1
+  unmatched files in local:
+   c2
+  unmatched files in other:
+   b
+   b2
+  all copies found (* = to merge, ! = divergent):
+   c2 -> a2 
+   b -> a *
+   b2 -> a2 
+  checking for directory renames
  a2: divergent renames -> dr
  a: remote moved to b -> m
  b2: remote created -> g
 copying a to b
 merging a and b
 my a@f26ec4fc3fa3+ other b@8e765a822af2 ancestor a@af1939970a1c
 removing a
 warning: detected divergent renames of a2 to:
  c2
  b2
 getting b2
 1 files updated, 1 files merged, 0 files removed, 0 files unresolved
 (branch merge, don't forget to commit)
 M b
   a
 M b2
 R a
 C c2
 blahblah
    rev    offset  length   base linkrev nodeid       p1           p2
      0         0      67      0       1 dc51707dfc98 000000000000 000000000000
      1        67      72      1       3 b2494a44f0a9 000000000000 dc51707dfc98
 b renamed from a:dd03b83622e78778b403775d0d074b9ac7387a66

tests/test-up-local-change.out

@@ -1,136 +1,143 b''
 adding a
 1 files updated, 0 files merged, 0 files removed, 0 files unresolved
 0 files updated, 0 files merged, 0 files removed, 0 files unresolved
 diff -r 33aaa84a386b a
 --- a/a
 +++ b/a
 @@ -1,1 +1,1 @@ a
 -a
 +abc
 adding b
 M a
 changeset:   0:33aaa84a386b
 user:        test
 date:        Mon Jan 12 13:46:40 1970 +0000
 summary:     1
 
 resolving manifests
  overwrite False partial False
  ancestor 33aaa84a386b local 33aaa84a386b+ remote 802f095af299
+  searching for copies back to rev 1
+  unmatched files in other:
+   b
  a: versions differ -> m
  b: remote created -> g
 merging a
 my a@33aaa84a386b+ other a@802f095af299 ancestor a@33aaa84a386b
 getting b
 1 files updated, 1 files merged, 0 files removed, 0 files unresolved
 changeset:   1:802f095af299
 tag:         tip
 user:        test
 date:        Mon Jan 12 13:46:40 1970 +0000
 summary:     2
 
 resolving manifests
  overwrite False partial False
  ancestor 33aaa84a386b local 802f095af299+ remote 33aaa84a386b
  b: remote deleted -> r
 removing b
 0 files updated, 0 files merged, 1 files removed, 0 files unresolved
 changeset:   0:33aaa84a386b
 user:        test
 date:        Mon Jan 12 13:46:40 1970 +0000
 summary:     1
 
 abort: there is nothing to merge - use "hg update" instead
 failed
 changeset:   0:33aaa84a386b
 user:        test
 date:        Mon Jan 12 13:46:40 1970 +0000
 summary:     1
 
 resolving manifests
  overwrite False partial False
  ancestor 33aaa84a386b local 33aaa84a386b+ remote 802f095af299
+  searching for copies back to rev 1
+  unmatched files in other:
+   b
  a: versions differ -> m
  b: remote created -> g
 merging a
 my a@33aaa84a386b+ other a@802f095af299 ancestor a@33aaa84a386b
 getting b
 1 files updated, 1 files merged, 0 files removed, 0 files unresolved
 changeset:   1:802f095af299
 tag:         tip
 user:        test
 date:        Mon Jan 12 13:46:40 1970 +0000
 summary:     2
 
 changeset:   1:802f095af299
 tag:         tip
 user:        test
 date:        Mon Jan 12 13:46:40 1970 +0000
 files:       a b
 description:
 2
 
 
 changeset:   0:33aaa84a386b
 user:        test
 date:        Mon Jan 12 13:46:40 1970 +0000
 files:       a
 description:
 1
 
 
 diff -r 802f095af299 a
 --- a/a
 +++ b/a
 @@ -1,1 +1,1 @@ a2
 -a2
 +abc
 1 files updated, 0 files merged, 1 files removed, 0 files unresolved
 adding b
 M a
 changeset:   1:802f095af299
 user:        test
 date:        Mon Jan 12 13:46:40 1970 +0000
 summary:     2
 
 abort: update spans branches, use 'hg merge' or 'hg update -C' to lose changes
 failed
 abort: outstanding uncommitted changes
 failed
 resolving manifests
  overwrite False partial False
  ancestor 33aaa84a386b local 802f095af299+ remote 030602aee63d
+  searching for copies back to rev 1
  a: versions differ -> m
  b: versions differ -> m
 merging a
 my a@802f095af299+ other a@030602aee63d ancestor a@33aaa84a386b
 merging b
 my b@802f095af299+ other b@030602aee63d ancestor b@000000000000
 0 files updated, 2 files merged, 0 files removed, 0 files unresolved
 (branch merge, don't forget to commit)
 changeset:   1:802f095af299
 user:        test
 date:        Mon Jan 12 13:46:40 1970 +0000
 summary:     2
 
 changeset:   2:030602aee63d
 tag:         tip
 parent:      0:33aaa84a386b
 user:        test
 date:        Mon Jan 12 13:46:40 1970 +0000
 summary:     3
 
 diff -r 802f095af299 a
 --- a/a
 +++ b/a
 @@ -1,1 +1,1 @@ a2
 -a2
 +abc
 adding a
 pulling from ../a
 requesting all changes
 adding changesets
 adding manifests
 adding file changes
 added 1 changesets with 1 changes to 1 files
 1 files updated, 0 files merged, 0 files removed, 0 files unresolved