fix 'hg <not-log> -v --template foo' with revisions without copies

mercurial/cmdutil.py

@@ -1,776 +1,776 b''
 # cmdutil.py - help for command processing in mercurial
 #
 # Copyright 2005, 2006 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 demandload import demandload
 from node import *
 from i18n import gettext as _
 demandload(globals(), 'os sys')
 demandload(globals(), 'mdiff util templater patch')
 
 revrangesep = ':'
 
 def revpair(repo, revs):
     '''return pair of nodes, given list of revisions. second item can
     be None, meaning use working dir.'''
 
     def revfix(repo, val, defval):
         if not val and val != 0 and defval is not None:
             val = defval
         return repo.lookup(val)
 
     if not revs:
         return repo.dirstate.parents()[0], None
     end = None
     if len(revs) == 1:
         if revrangesep in revs[0]:
             start, end = revs[0].split(revrangesep, 1)
             start = revfix(repo, start, 0)
             end = revfix(repo, end, repo.changelog.count() - 1)
         else:
             start = revfix(repo, revs[0], None)
     elif len(revs) == 2:
         if revrangesep in revs[0] or revrangesep in revs[1]:
             raise util.Abort(_('too many revisions specified'))
         start = revfix(repo, revs[0], None)
         end = revfix(repo, revs[1], None)
     else:
         raise util.Abort(_('too many revisions specified'))
     return start, end
 
 def revrange(repo, revs):
     """Yield revision as strings from a list of revision specifications."""
 
     def revfix(repo, val, defval):
         if not val and val != 0 and defval is not None:
             return defval
         return repo.changelog.rev(repo.lookup(val))
 
     seen, l = {}, []
     for spec in revs:
         if revrangesep in spec:
             start, end = spec.split(revrangesep, 1)
             start = revfix(repo, start, 0)
             end = revfix(repo, end, repo.changelog.count() - 1)
             step = start > end and -1 or 1
             for rev in xrange(start, end+step, step):
                 if rev in seen:
                     continue
                 seen[rev] = 1
                 l.append(rev)
         else:
             rev = revfix(repo, spec, None)
             if rev in seen:
                 continue
             seen[rev] = 1
             l.append(rev)
 
     return l
 
 def make_filename(repo, pat, node,
                   total=None, seqno=None, revwidth=None, pathname=None):
     node_expander = {
         'H': lambda: hex(node),
         'R': lambda: str(repo.changelog.rev(node)),
         'h': lambda: short(node),
         }
     expander = {
         '%': lambda: '%',
         'b': lambda: os.path.basename(repo.root),
         }
 
     try:
         if node:
             expander.update(node_expander)
         if node and revwidth is not None:
             expander['r'] = (lambda:
                     str(repo.changelog.rev(node)).zfill(revwidth))
         if total is not None:
             expander['N'] = lambda: str(total)
         if seqno is not None:
             expander['n'] = lambda: str(seqno)
         if total is not None and seqno is not None:
             expander['n'] = lambda: str(seqno).zfill(len(str(total)))
         if pathname is not None:
             expander['s'] = lambda: os.path.basename(pathname)
             expander['d'] = lambda: os.path.dirname(pathname) or '.'
             expander['p'] = lambda: pathname
 
         newname = []
         patlen = len(pat)
         i = 0
         while i < patlen:
             c = pat[i]
             if c == '%':
                 i += 1
                 c = pat[i]
                 c = expander[c]()
             newname.append(c)
             i += 1
         return ''.join(newname)
     except KeyError, inst:
         raise util.Abort(_("invalid format spec '%%%s' in output file name") %
                          inst.args[0])
 
 def make_file(repo, pat, node=None,
               total=None, seqno=None, revwidth=None, mode='wb', pathname=None):
     if not pat or pat == '-':
         return 'w' in mode and sys.stdout or sys.stdin
     if hasattr(pat, 'write') and 'w' in mode:
         return pat
     if hasattr(pat, 'read') and 'r' in mode:
         return pat
     return open(make_filename(repo, pat, node, total, seqno, revwidth,
                               pathname),
                 mode)
 
 def matchpats(repo, pats=[], opts={}, head='', globbed=False):
     cwd = repo.getcwd()
     if not pats and cwd:
         opts['include'] = [os.path.join(cwd, i)
                            for i in opts.get('include', [])]
         opts['exclude'] = [os.path.join(cwd, x)
                            for x in opts.get('exclude', [])]
         cwd = ''
     return util.cmdmatcher(repo.root, cwd, pats or ['.'], opts.get('include'),
                            opts.get('exclude'), head, globbed=globbed)
 
 def walk(repo, pats=[], opts={}, node=None, head='', badmatch=None,
          globbed=False):
     files, matchfn, anypats = matchpats(repo, pats, opts, head,
                                         globbed=globbed)
     exact = dict.fromkeys(files)
     for src, fn in repo.walk(node=node, files=files, match=matchfn,
                              badmatch=badmatch):
         yield src, fn, util.pathto(repo.root, repo.getcwd(), fn), fn in exact
 
 def findrenames(repo, added=None, removed=None, threshold=0.5):
     if added is None or removed is None:
         added, removed = repo.status()[1:3]
     changes = repo.changelog.read(repo.dirstate.parents()[0])
     mf = repo.manifest.read(changes[0])
     for a in added:
         aa = repo.wread(a)
         bestscore, bestname = None, None
         for r in removed:
             rr = repo.file(r).read(mf[r])
             delta = mdiff.textdiff(aa, rr)
             if len(delta) < len(aa):
                 myscore = 1.0 - (float(len(delta)) / len(aa))
                 if bestscore is None or myscore > bestscore:
                     bestscore, bestname = myscore, r
         if bestname and bestscore >= threshold:
             yield bestname, a, bestscore
 
 def addremove(repo, pats=[], opts={}, wlock=None, dry_run=None,
               similarity=None):
     if dry_run is None:
         dry_run = opts.get('dry_run')
     if similarity is None:
         similarity = float(opts.get('similarity') or 0)
     add, remove = [], []
     mapping = {}
     for src, abs, rel, exact in walk(repo, pats, opts):
         if src == 'f' and repo.dirstate.state(abs) == '?':
             add.append(abs)
             mapping[abs] = rel, exact
             if repo.ui.verbose or not exact:
                 repo.ui.status(_('adding %s\n') % ((pats and rel) or abs))
         if repo.dirstate.state(abs) != 'r' and not os.path.exists(rel):
             remove.append(abs)
             mapping[abs] = rel, exact
             if repo.ui.verbose or not exact:
                 repo.ui.status(_('removing %s\n') % ((pats and rel) or abs))
     if not dry_run:
         repo.add(add, wlock=wlock)
         repo.remove(remove, wlock=wlock)
     if similarity > 0:
         for old, new, score in findrenames(repo, add, remove, similarity):
             oldrel, oldexact = mapping[old]
             newrel, newexact = mapping[new]
             if repo.ui.verbose or not oldexact or not newexact:
                 repo.ui.status(_('recording removal of %s as rename to %s '
                                  '(%d%% similar)\n') %
                                (oldrel, newrel, score * 100))
             if not dry_run:
                 repo.copy(old, new, wlock=wlock)
 
 class changeset_printer(object):
     '''show changeset information when templating not requested.'''
 
     def __init__(self, ui, repo, patch, brinfo, buffered):
         self.ui = ui
         self.repo = repo
         self.buffered = buffered
         self.patch = patch
         self.brinfo = brinfo
         self.header = {}
         self.hunk = {}
         self.lastheader = None
 
     def flush(self, rev):
         if rev in self.header:
             h = self.header[rev]
             if h != self.lastheader:
                 self.lastheader = h
                 self.ui.write(h)
             del self.header[rev]
         if rev in self.hunk:
             self.ui.write(self.hunk[rev])
             del self.hunk[rev]
             return 1
         return 0
 
-    def show(self, rev=0, changenode=None, copies=None, **props):
+    def show(self, rev=0, changenode=None, copies=(), **props):
         if self.buffered:
             self.ui.pushbuffer()
             self._show(rev, changenode, copies, props)
             self.hunk[rev] = self.ui.popbuffer()
         else:
             self._show(rev, changenode, copies, props)
 
     def _show(self, rev, changenode, copies, props):
         '''show a single changeset or file revision'''
         log = self.repo.changelog
         if changenode is None:
             changenode = log.node(rev)
         elif not rev:
             rev = log.rev(changenode)
 
         if self.ui.quiet:
             self.ui.write("%d:%s\n" % (rev, short(changenode)))
             return
 
         changes = log.read(changenode)
         date = util.datestr(changes[2])
         extra = changes[5]
         branch = extra.get("branch")
 
         hexfunc = self.ui.debugflag and hex or short
 
         parents = log.parentrevs(rev)
         if not self.ui.debugflag:
             if parents[1] == nullrev:
                 if parents[0] >= rev - 1:
                     parents = []
                 else:
                     parents = [parents[0]]
         parents = [(p, hexfunc(log.node(p))) for p in parents]
 
         self.ui.write(_("changeset:   %d:%s\n") % (rev, hexfunc(changenode)))
 
         # don't show the default branch name
         if branch != 'default':
             branch = util.tolocal(branch)
             self.ui.write(_("branch:      %s\n") % branch)
         for tag in self.repo.nodetags(changenode):
             self.ui.write(_("tag:         %s\n") % tag)
         for parent in parents:
             self.ui.write(_("parent:      %d:%s\n") % parent)
 
         if self.brinfo:
             br = self.repo.branchlookup([changenode])
             if br:
                 self.ui.write(_("branch:      %s\n") % " ".join(br[changenode]))
 
         if self.ui.debugflag:
             self.ui.write(_("manifest:    %d:%s\n") %
                           (self.repo.manifest.rev(changes[0]), hex(changes[0])))
         self.ui.write(_("user:        %s\n") % changes[1])
         self.ui.write(_("date:        %s\n") % date)
 
         if self.ui.debugflag:
             files = self.repo.status(log.parents(changenode)[0], changenode)[:3]
             for key, value in zip([_("files:"), _("files+:"), _("files-:")],
                                   files):
                 if value:
                     self.ui.write("%-12s %s\n" % (key, " ".join(value)))
         elif changes[3] and self.ui.verbose:
             self.ui.write(_("files:       %s\n") % " ".join(changes[3]))
         if copies and self.ui.verbose:
             copies = ['%s (%s)' % c for c in copies]
             self.ui.write(_("copies:      %s\n") % ' '.join(copies))
 
         if extra and self.ui.debugflag:
             extraitems = extra.items()
             extraitems.sort()
             for key, value in extraitems:
                 self.ui.write(_("extra:       %s=%s\n")
                               % (key, value.encode('string_escape')))
 
         description = changes[4].strip()
         if description:
             if self.ui.verbose:
                 self.ui.write(_("description:\n"))
                 self.ui.write(description)
                 self.ui.write("\n\n")
             else:
                 self.ui.write(_("summary:     %s\n") %
                               description.splitlines()[0])
         self.ui.write("\n")
 
         self.showpatch(changenode)
 
     def showpatch(self, node):
         if self.patch:
             prev = self.repo.changelog.parents(node)[0]
             patch.diff(self.repo, prev, node, match=self.patch, fp=self.ui)
             self.ui.write("\n")
 
 class changeset_templater(changeset_printer):
     '''format changeset information.'''
 
     def __init__(self, ui, repo, patch, brinfo, mapfile, buffered):
         changeset_printer.__init__(self, ui, repo, patch, brinfo, buffered)
         self.t = templater.templater(mapfile, templater.common_filters,
                                      cache={'parent': '{rev}:{node|short} ',
                                             'manifest': '{rev}:{node|short}',
                                             'filecopy': '{name} ({source})'})
 
     def use_template(self, t):
         '''set template string to use'''
         self.t.cache['changeset'] = t
 
     def _show(self, rev, changenode, copies, props):
         '''show a single changeset or file revision'''
         log = self.repo.changelog
         if changenode is None:
             changenode = log.node(rev)
         elif not rev:
             rev = log.rev(changenode)
 
         changes = log.read(changenode)
 
         def showlist(name, values, plural=None, **args):
             '''expand set of values.
             name is name of key in template map.
             values is list of strings or dicts.
             plural is plural of name, if not simply name + 's'.
 
             expansion works like this, given name 'foo'.
 
             if values is empty, expand 'no_foos'.
 
             if 'foo' not in template map, return values as a string,
             joined by space.
 
             expand 'start_foos'.
 
             for each value, expand 'foo'. if 'last_foo' in template
             map, expand it instead of 'foo' for last key.
 
             expand 'end_foos'.
             '''
             if plural: names = plural
             else: names = name + 's'
             if not values:
                 noname = 'no_' + names
                 if noname in self.t:
                     yield self.t(noname, **args)
                 return
             if name not in self.t:
                 if isinstance(values[0], str):
                     yield ' '.join(values)
                 else:
                     for v in values:
                         yield dict(v, **args)
                 return
             startname = 'start_' + names
             if startname in self.t:
                 yield self.t(startname, **args)
             vargs = args.copy()
             def one(v, tag=name):
                 try:
                     vargs.update(v)
                 except (AttributeError, ValueError):
                     try:
                         for a, b in v:
                             vargs[a] = b
                     except ValueError:
                         vargs[name] = v
                 return self.t(tag, **vargs)
             lastname = 'last_' + name
             if lastname in self.t:
                 last = values.pop()
             else:
                 last = None
             for v in values:
                 yield one(v)
             if last is not None:
                 yield one(last, tag=lastname)
             endname = 'end_' + names
             if endname in self.t:
                 yield self.t(endname, **args)
 
         def showbranches(**args):
             branch = changes[5].get("branch")
             if branch != 'default':
                 branch = util.tolocal(branch)
                 return showlist('branch', [branch], plural='branches', **args)
             # add old style branches if requested
             if self.brinfo:
                 br = self.repo.branchlookup([changenode])
                 if changenode in br:
                     return showlist('branch', br[changenode],
                                     plural='branches', **args)
 
         def showparents(**args):
             parents = [[('rev', log.rev(p)), ('node', hex(p))]
                        for p in log.parents(changenode)
                        if self.ui.debugflag or p != nullid]
             if (not self.ui.debugflag and len(parents) == 1 and
                 parents[0][0][1] == rev - 1):
                 return
             return showlist('parent', parents, **args)
 
         def showtags(**args):
             return showlist('tag', self.repo.nodetags(changenode), **args)
 
         def showextras(**args):
             extras = changes[5].items()
             extras.sort()
             for key, value in extras:
                 args = args.copy()
                 args.update(dict(key=key, value=value))
                 yield self.t('extra', **args)
 
         def showcopies(**args):
             c = [{'name': x[0], 'source': x[1]} for x in copies]
             return showlist('file_copy', c, plural='file_copies', **args)
 
         if self.ui.debugflag:
             files = self.repo.status(log.parents(changenode)[0], changenode)[:3]
             def showfiles(**args):
                 return showlist('file', files[0], **args)
             def showadds(**args):
                 return showlist('file_add', files[1], **args)
             def showdels(**args):
                 return showlist('file_del', files[2], **args)
             def showmanifest(**args):
                 args = args.copy()
                 args.update(dict(rev=self.repo.manifest.rev(changes[0]),
                                  node=hex(changes[0])))
                 return self.t('manifest', **args)
         else:
             def showfiles(**args):
                 return showlist('file', changes[3], **args)
             showadds = ''
             showdels = ''
             showmanifest = ''
 
         defprops = {
             'author': changes[1],
             'branches': showbranches,
             'date': changes[2],
             'desc': changes[4],
             'file_adds': showadds,
             'file_dels': showdels,
             'files': showfiles,
             'file_copies': showcopies,
             'manifest': showmanifest,
             'node': hex(changenode),
             'parents': showparents,
             'rev': rev,
             'tags': showtags,
             'extras': showextras,
             }
         props = props.copy()
         props.update(defprops)
 
         try:
             if self.ui.debugflag and 'header_debug' in self.t:
                 key = 'header_debug'
             elif self.ui.quiet and 'header_quiet' in self.t:
                 key = 'header_quiet'
             elif self.ui.verbose and 'header_verbose' in self.t:
                 key = 'header_verbose'
             elif 'header' in self.t:
                 key = 'header'
             else:
                 key = ''
             if key:
                 h = templater.stringify(self.t(key, **props))
                 if self.buffered:
                     self.header[rev] = h
                 else:
                     self.ui.write(h)
             if self.ui.debugflag and 'changeset_debug' in self.t:
                 key = 'changeset_debug'
             elif self.ui.quiet and 'changeset_quiet' in self.t:
                 key = 'changeset_quiet'
             elif self.ui.verbose and 'changeset_verbose' in self.t:
                 key = 'changeset_verbose'
             else:
                 key = 'changeset'
             self.ui.write(templater.stringify(self.t(key, **props)))
             self.showpatch(changenode)
         except KeyError, inst:
             raise util.Abort(_("%s: no key named '%s'") % (self.t.mapfile,
                                                            inst.args[0]))
         except SyntaxError, inst:
             raise util.Abort(_('%s: %s') % (self.t.mapfile, inst.args[0]))
 
 def show_changeset(ui, repo, opts, buffered=False, matchfn=False):
     """show one changeset using template or regular display.
 
     Display format will be the first non-empty hit of:
     1. option 'template'
     2. option 'style'
     3. [ui] setting 'logtemplate'
     4. [ui] setting 'style'
     If all of these values are either the unset or the empty string,
     regular display via changeset_printer() is done.
     """
     # options
     patch = False
     if opts.get('patch'):
         patch = matchfn or util.always
 
     br = None
     if opts.get('branches'):
         ui.warn(_("the --branches option is deprecated, "
                   "please use 'hg branches' instead\n"))
         br = True
     tmpl = opts.get('template')
     mapfile = None
     if tmpl:
         tmpl = templater.parsestring(tmpl, quoted=False)
     else:
         mapfile = opts.get('style')
         # ui settings
         if not mapfile:
             tmpl = ui.config('ui', 'logtemplate')
             if tmpl:
                 tmpl = templater.parsestring(tmpl)
             else:
                 mapfile = ui.config('ui', 'style')
 
     if tmpl or mapfile:
         if mapfile:
             if not os.path.split(mapfile)[0]:
                 mapname = (templater.templatepath('map-cmdline.' + mapfile)
                            or templater.templatepath(mapfile))
                 if mapname: mapfile = mapname
         try:
             t = changeset_templater(ui, repo, patch, br, mapfile, buffered)
         except SyntaxError, inst:
             raise util.Abort(inst.args[0])
         if tmpl: t.use_template(tmpl)
         return t
     return changeset_printer(ui, repo, patch, br, buffered)
 
 def finddate(ui, repo, date):
     """Find the tipmost changeset that matches the given date spec"""
     df = util.matchdate(date + " to " + date)
     get = util.cachefunc(lambda r: repo.changectx(r).changeset())
     changeiter, matchfn = walkchangerevs(ui, repo, [], get, {'rev':None})
     results = {}
     for st, rev, fns in changeiter:
         if st == 'add':
             d = get(rev)[2]
             if df(d[0]):
                 results[rev] = d
         elif st == 'iter':
             if rev in results:
                 ui.status("Found revision %s from %s\n" %
                           (rev, util.datestr(results[rev])))
                 return str(rev)
 
     raise util.Abort(_("revision matching date not found"))
 
 def walkchangerevs(ui, repo, pats, change, opts):
     '''Iterate over files and the revs they changed in.
 
     Callers most commonly need to iterate backwards over the history
     it is interested in.  Doing so has awful (quadratic-looking)
     performance, so we use iterators in a "windowed" way.
 
     We walk a window of revisions in the desired order.  Within the
     window, we first walk forwards to gather data, then in the desired
     order (usually backwards) to display it.
 
     This function returns an (iterator, matchfn) tuple. The iterator
     yields 3-tuples. They will be of one of the following forms:
 
     "window", incrementing, lastrev: stepping through a window,
     positive if walking forwards through revs, last rev in the
     sequence iterated over - use to reset state for the current window
 
     "add", rev, fns: out-of-order traversal of the given file names
     fns, which changed during revision rev - use to gather data for
     possible display
 
     "iter", rev, None: in-order traversal of the revs earlier iterated
     over with "add" - use to display data'''
 
     def increasing_windows(start, end, windowsize=8, sizelimit=512):
         if start < end:
             while start < end:
                 yield start, min(windowsize, end-start)
                 start += windowsize
                 if windowsize < sizelimit:
                     windowsize *= 2
         else:
             while start > end:
                 yield start, min(windowsize, start-end-1)
                 start -= windowsize
                 if windowsize < sizelimit:
                     windowsize *= 2
 
     files, matchfn, anypats = matchpats(repo, pats, opts)
     follow = opts.get('follow') or opts.get('follow_first')
 
     if repo.changelog.count() == 0:
         return [], matchfn
 
     if follow:
         defrange = '%s:0' % repo.changectx().rev()
     else:
         defrange = 'tip:0'
     revs = revrange(repo, opts['rev'] or [defrange])
     wanted = {}
     slowpath = anypats or opts.get('removed')
     fncache = {}
 
     if not slowpath and not files:
         # No files, no patterns.  Display all revs.
         wanted = dict.fromkeys(revs)
     copies = []
     if not slowpath:
         # Only files, no patterns.  Check the history of each file.
         def filerevgen(filelog, node):
             cl_count = repo.changelog.count()
             if node is None:
                 last = filelog.count() - 1
             else:
                 last = filelog.rev(node)
             for i, window in increasing_windows(last, nullrev):
                 revs = []
                 for j in xrange(i - window, i + 1):
                     n = filelog.node(j)
                     revs.append((filelog.linkrev(n),
                                  follow and filelog.renamed(n)))
                 revs.reverse()
                 for rev in revs:
                     # only yield rev for which we have the changelog, it can
                     # happen while doing "hg log" during a pull or commit
                     if rev[0] < cl_count:
                         yield rev
         def iterfiles():
             for filename in files:
                 yield filename, None
             for filename_node in copies:
                 yield filename_node
         minrev, maxrev = min(revs), max(revs)
         for file_, node in iterfiles():
             filelog = repo.file(file_)
             # A zero count may be a directory or deleted file, so
             # try to find matching entries on the slow path.
             if filelog.count() == 0:
                 slowpath = True
                 break
             for rev, copied in filerevgen(filelog, node):
                 if rev <= maxrev:
                     if rev < minrev:
                         break
                     fncache.setdefault(rev, [])
                     fncache[rev].append(file_)
                     wanted[rev] = 1
                     if follow and copied:
                         copies.append(copied)
     if slowpath:
         if follow:
             raise util.Abort(_('can only follow copies/renames for explicit '
                                'file names'))
 
         # The slow path checks files modified in every changeset.
         def changerevgen():
             for i, window in increasing_windows(repo.changelog.count()-1,
                                                 nullrev):
                 for j in xrange(i - window, i + 1):
                     yield j, change(j)[3]
 
         for rev, changefiles in changerevgen():
             matches = filter(matchfn, changefiles)
             if matches:
                 fncache[rev] = matches
                 wanted[rev] = 1
 
     class followfilter:
         def __init__(self, onlyfirst=False):
             self.startrev = nullrev
             self.roots = []
             self.onlyfirst = onlyfirst
 
         def match(self, rev):
             def realparents(rev):
                 if self.onlyfirst:
                     return repo.changelog.parentrevs(rev)[0:1]
                 else:
                     return filter(lambda x: x != nullrev,
                                   repo.changelog.parentrevs(rev))
 
             if self.startrev == nullrev:
                 self.startrev = rev
                 return True
 
             if rev > self.startrev:
                 # forward: all descendants
                 if not self.roots:
                     self.roots.append(self.startrev)
                 for parent in realparents(rev):
                     if parent in self.roots:
                         self.roots.append(rev)
                         return True
             else:
                 # backwards: all parents
                 if not self.roots:
                     self.roots.extend(realparents(self.startrev))
                 if rev in self.roots:
                     self.roots.remove(rev)
                     self.roots.extend(realparents(rev))
                     return True
 
             return False
 
     # it might be worthwhile to do this in the iterator if the rev range
     # is descending and the prune args are all within that range
     for rev in opts.get('prune', ()):
         rev = repo.changelog.rev(repo.lookup(rev))
         ff = followfilter()
         stop = min(revs[0], revs[-1])
         for x in xrange(rev, stop-1, -1):
             if ff.match(x) and x in wanted:
                 del wanted[x]
 
     def iterate():
         if follow and not files:
             ff = followfilter(onlyfirst=opts.get('follow_first'))
             def want(rev):
                 if ff.match(rev) and rev in wanted:
                     return True
                 return False
         else:
             def want(rev):
                 return rev in wanted
 
         for i, window in increasing_windows(0, len(revs)):
             yield 'window', revs[0] < revs[-1], revs[-1]
             nrevs = [rev for rev in revs[i:i+window] if want(rev)]
             srevs = list(nrevs)
             srevs.sort()
             for rev in srevs:
                 fns = fncache.get(rev)
                 if not fns:
                     def fns_generator():
                         for f in change(rev)[3]:
                             if matchfn(f):
                                 yield f
                     fns = fns_generator()
                 yield 'add', rev, fns
             for rev in nrevs:
                 yield 'iter', rev, None
     return iterate(), matchfn

tests/test-command-template

@@ -1,100 +1,103 b''
 #!/bin/sh
 
 hg init a
 cd a
 echo a > a
 hg add a
 echo line 1 > b
 echo line 2 >> b
 hg commit -l b -d '1000000 0' -u 'User Name <user@hostname>'
 hg add b
 echo other 1 > c
 echo other 2 >> c
 echo >> c
 echo other 3 >> c
 hg commit -l c -d '1100000 0' -u 'A. N. Other <other@place>'
 hg add c
 hg commit -m 'no person' -d '1200000 0' -u 'other@place'
 echo c >> c
 hg commit -m 'no user, no domain' -d '1300000 0' -u 'person'
 echo foo > .hg/branch
 hg commit -m 'new branch' -d '1400000 0' -u 'person'
 
 # make sure user/global hgrc does not affect tests
 echo '[ui]' > .hg/hgrc
 echo 'logtemplate =' >> .hg/hgrc
 echo 'style =' >> .hg/hgrc
 
 echo '# default style is like normal output'
 echo '#  normal'
 hg log > log.out
 hg log --style default > style.out
 diff log.out style.out
 echo '#  verbose'
 hg log -v > log.out
 hg log -v --style default > style.out
 diff log.out style.out
 echo '#  debug'
 hg log --debug > log.out
 hg log --debug --style default > style.out
 diff log.out style.out
 
+echo '# revision with no copies (used to print a traceback)'
+hg tip -v --template '\n'
+
 echo '# compact style works'
 hg log --style compact
 hg log -v --style compact
 hg log --debug --style compact
 
 echo '# error if style not readable'
 touch q
 chmod 0 q
 hg log --style ./q
 
 echo '# error if no style'
 hg log --style notexist
 
 echo '# error if style missing key'
 echo 'q = q' > t
 hg log --style ./t
 
 echo '# error if include fails'
 echo 'changeset = q' >> t
 hg log --style ./t
 
 echo '# include works'
 rm q
 echo '{rev}' > q
 hg log --style ./t
 
 echo '# ui.style works'
 echo '[ui]' > .hg/hgrc
 echo 'style = t' >> .hg/hgrc
 hg log
 
 echo '# issue338'
 hg log --style=changelog > changelog
 cat changelog
 
 echo "# keys work"
 for key in author branches date desc file_adds file_dels files \
         manifest node parents rev tags; do
     for mode in '' --verbose --debug; do
         hg log $mode --template "$key$mode: {$key}\n"
     done
 done
 
 echo '# filters work'
 hg log --template '{author|domain}\n'
 hg log --template '{author|person}\n'
 hg log --template '{author|user}\n'
 hg log --template '{date|age}\n' > /dev/null || exit 1
 hg log --template '{date|date}\n'
 hg log --template '{date|isodate}\n'
 hg log --template '{date|rfc822date}\n'
 hg log --template '{desc|firstline}\n'
 hg log --template '{node|short}\n'
 
 echo '# error on syntax'
 echo 'x = "f' >> t
 hg log
 
 echo '# done'

tests/test-command-template.out

@@ -1,339 +1,341 b''
 # default style is like normal output
 #  normal
 #  verbose
 #  debug
+# revision with no copies (used to print a traceback)
+
 # compact style works
 4[tip]   32a18f097fcc   1970-01-17 04:53 +0000   person
   new branch
 
 3   10e46f2dcbf4   1970-01-16 01:06 +0000   person
   no user, no domain
 
 2   97054abb4ab8   1970-01-14 21:20 +0000   other
   no person
 
 1   b608e9d1a3f0   1970-01-13 17:33 +0000   other
   other 1
 
 0   1e4e1b8f71e0   1970-01-12 13:46 +0000   user
   line 1
 
 4[tip]   32a18f097fcc   1970-01-17 04:53 +0000   person
   new branch
 
 3   10e46f2dcbf4   1970-01-16 01:06 +0000   person
   no user, no domain
 
 2   97054abb4ab8   1970-01-14 21:20 +0000   other
   no person
 
 1   b608e9d1a3f0   1970-01-13 17:33 +0000   other
   other 1
 
 0   1e4e1b8f71e0   1970-01-12 13:46 +0000   user
   line 1
 
 4[tip]:3,-1   32a18f097fcc   1970-01-17 04:53 +0000   person
   new branch
 
 3:2,-1   10e46f2dcbf4   1970-01-16 01:06 +0000   person
   no user, no domain
 
 2:1,-1   97054abb4ab8   1970-01-14 21:20 +0000   other
   no person
 
 1:0,-1   b608e9d1a3f0   1970-01-13 17:33 +0000   other
   other 1
 
 0:-1,-1   1e4e1b8f71e0   1970-01-12 13:46 +0000   user
   line 1
 
 # error if style not readable
 abort: Permission denied: ./q
 # error if no style
 abort: No such file or directory: notexist
 # error if style missing key
 abort: ./t: no key named 'changeset'
 # error if include fails
 abort: template file ./q: Permission denied
 # include works
 4
 3
 2
 1
 0
 # ui.style works
 4
 3
 2
 1
 0
 # issue338
 1970-01-17  person  <person>
 
 	* new branch
 	[32a18f097fcc] [tip]
 
 1970-01-16  person  <person>
 
 	* c:
 	no user, no domain
 	[10e46f2dcbf4]
 
 1970-01-14  other  <other@place>
 
 	* c:
 	no person
 	[97054abb4ab8]
 
 1970-01-13  A. N. Other  <other@place>
 
 	* b:
 	other 1 other 2
 
 	other 3
 	[b608e9d1a3f0]
 
 1970-01-12  User Name  <user@hostname>
 
 	* a:
 	line 1 line 2
 	[1e4e1b8f71e0]
 
 # keys work
 author: person
 author: person
 author: other@place
 author: A. N. Other <other@place>
 author: User Name <user@hostname>
 author--verbose: person
 author--verbose: person
 author--verbose: other@place
 author--verbose: A. N. Other <other@place>
 author--verbose: User Name <user@hostname>
 author--debug: person
 author--debug: person
 author--debug: other@place
 author--debug: A. N. Other <other@place>
 author--debug: User Name <user@hostname>
 branches: foo
 branches: 
 branches: 
 branches: 
 branches: 
 branches--verbose: foo
 branches--verbose: 
 branches--verbose: 
 branches--verbose: 
 branches--verbose: 
 branches--debug: foo
 branches--debug: 
 branches--debug: 
 branches--debug: 
 branches--debug: 
 date: 1400000.00
 date: 1300000.00
 date: 1200000.00
 date: 1100000.00
 date: 1000000.00
 date--verbose: 1400000.00
 date--verbose: 1300000.00
 date--verbose: 1200000.00
 date--verbose: 1100000.00
 date--verbose: 1000000.00
 date--debug: 1400000.00
 date--debug: 1300000.00
 date--debug: 1200000.00
 date--debug: 1100000.00
 date--debug: 1000000.00
 desc: new branch
 desc: no user, no domain
 desc: no person
 desc: other 1
 other 2
 
 other 3
 desc: line 1
 line 2
 desc--verbose: new branch
 desc--verbose: no user, no domain
 desc--verbose: no person
 desc--verbose: other 1
 other 2
 
 other 3
 desc--verbose: line 1
 line 2
 desc--debug: new branch
 desc--debug: no user, no domain
 desc--debug: no person
 desc--debug: other 1
 other 2
 
 other 3
 desc--debug: line 1
 line 2
 file_adds: 
 file_adds: 
 file_adds: 
 file_adds: 
 file_adds: 
 file_adds--verbose: 
 file_adds--verbose: 
 file_adds--verbose: 
 file_adds--verbose: 
 file_adds--verbose: 
 file_adds--debug: 
 file_adds--debug: 
 file_adds--debug: c
 file_adds--debug: b
 file_adds--debug: a
 file_dels: 
 file_dels: 
 file_dels: 
 file_dels: 
 file_dels: 
 file_dels--verbose: 
 file_dels--verbose: 
 file_dels--verbose: 
 file_dels--verbose: 
 file_dels--verbose: 
 file_dels--debug: 
 file_dels--debug: 
 file_dels--debug: 
 file_dels--debug: 
 file_dels--debug: 
 files: 
 files: c
 files: c
 files: b
 files: a
 files--verbose: 
 files--verbose: c
 files--verbose: c
 files--verbose: b
 files--verbose: a
 files--debug: 
 files--debug: c
 files--debug: 
 files--debug: 
 files--debug: 
 manifest: 
 manifest: 
 manifest: 
 manifest: 
 manifest: 
 manifest--verbose: 
 manifest--verbose: 
 manifest--verbose: 
 manifest--verbose: 
 manifest--verbose: 
 manifest--debug: 4:90ae8dda64e1
 manifest--debug: 3:cb5a1327723b
 manifest--debug: 2:6e0e82995c35
 manifest--debug: 1:4e8d705b1e53
 manifest--debug: 0:a0c8bcbbb45c
 node: 32a18f097fcccf76ef282f62f8a85b3adf8d13c4
 node: 10e46f2dcbf4823578cf180f33ecf0b957964c47
 node: 97054abb4ab824450e9164180baf491ae0078465
 node: b608e9d1a3f0273ccf70fb85fd6866b3482bf965
 node: 1e4e1b8f71e05681d422154f5421e385fec3454f
 node--verbose: 32a18f097fcccf76ef282f62f8a85b3adf8d13c4
 node--verbose: 10e46f2dcbf4823578cf180f33ecf0b957964c47
 node--verbose: 97054abb4ab824450e9164180baf491ae0078465
 node--verbose: b608e9d1a3f0273ccf70fb85fd6866b3482bf965
 node--verbose: 1e4e1b8f71e05681d422154f5421e385fec3454f
 node--debug: 32a18f097fcccf76ef282f62f8a85b3adf8d13c4
 node--debug: 10e46f2dcbf4823578cf180f33ecf0b957964c47
 node--debug: 97054abb4ab824450e9164180baf491ae0078465
 node--debug: b608e9d1a3f0273ccf70fb85fd6866b3482bf965
 node--debug: 1e4e1b8f71e05681d422154f5421e385fec3454f
 parents: 
 parents: 
 parents: 
 parents: 
 parents: 
 parents--verbose: 
 parents--verbose: 
 parents--verbose: 
 parents--verbose: 
 parents--verbose: 
 parents--debug: 3:10e46f2dcbf4 -1:000000000000 
 parents--debug: 2:97054abb4ab8 -1:000000000000 
 parents--debug: 1:b608e9d1a3f0 -1:000000000000 
 parents--debug: 0:1e4e1b8f71e0 -1:000000000000 
 parents--debug: -1:000000000000 -1:000000000000 
 rev: 4
 rev: 3
 rev: 2
 rev: 1
 rev: 0
 rev--verbose: 4
 rev--verbose: 3
 rev--verbose: 2
 rev--verbose: 1
 rev--verbose: 0
 rev--debug: 4
 rev--debug: 3
 rev--debug: 2
 rev--debug: 1
 rev--debug: 0
 tags: tip
 tags: 
 tags: 
 tags: 
 tags: 
 tags--verbose: tip
 tags--verbose: 
 tags--verbose: 
 tags--verbose: 
 tags--verbose: 
 tags--debug: tip
 tags--debug: 
 tags--debug: 
 tags--debug: 
 tags--debug: 
 # filters work
 
 
 place
 place
 hostname
 person
 person
 other
 A. N. Other
 User Name
 person
 person
 other
 other
 user
 Sat Jan 17 04:53:20 1970 +0000
 Fri Jan 16 01:06:40 1970 +0000
 Wed Jan 14 21:20:00 1970 +0000
 Tue Jan 13 17:33:20 1970 +0000
 Mon Jan 12 13:46:40 1970 +0000
 1970-01-17 04:53 +0000
 1970-01-16 01:06 +0000
 1970-01-14 21:20 +0000
 1970-01-13 17:33 +0000
 1970-01-12 13:46 +0000
 Sat, 17 Jan 1970 04:53:20 +0000
 Fri, 16 Jan 1970 01:06:40 +0000
 Wed, 14 Jan 1970 21:20:00 +0000
 Tue, 13 Jan 1970 17:33:20 +0000
 Mon, 12 Jan 1970 13:46:40 +0000
 new branch
 no user, no domain
 no person
 other 1
 line 1
 32a18f097fcc
 10e46f2dcbf4
 97054abb4ab8
 b608e9d1a3f0
 1e4e1b8f71e0
 # error on syntax
 abort: t:3: unmatched quotes
 # done