hgweb: handle a "descend" query parameter in filelog command

When this "descend" query parameter is present along with "linerange"
parameter, we get revisions following line range in descending order. The
parameter has no effect without "linerange".

mercurial/hgweb/webcommands.py

@@ -1,1374 +1,1381 b''
 #
 # Copyright 21 May 2005 - (c) 2005 Jake Edge <[e-mail]>
 # Copyright 2005-2007 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 cgi
 import copy
 import mimetypes
 import os
 import re
 
 from ..i18n import _
 from ..node import hex, short
 
 from .common import (
     ErrorResponse,
     HTTP_FORBIDDEN,
     HTTP_NOT_FOUND,
     HTTP_OK,
     get_contact,
     paritygen,
     staticfile,
 )
 
 from .. import (
     archival,
     context,
     encoding,
     error,
     graphmod,
     revset,
     revsetlang,
     scmutil,
     smartset,
     templatefilters,
     templater,
     util,
 )
 
 from . import (
     webutil,
 )
 
 __all__ = []
 commands = {}
 
 class webcommand(object):
     """Decorator used to register a web command handler.
 
     The decorator takes as its positional arguments the name/path the
     command should be accessible under.
 
     Usage:
 
     @webcommand('mycommand')
     def mycommand(web, req, tmpl):
         pass
     """
 
     def __init__(self, name):
         self.name = name
 
     def __call__(self, func):
         __all__.append(self.name)
         commands[self.name] = func
         return func
 
 @webcommand('log')
 def log(web, req, tmpl):
     """
     /log[/{revision}[/{path}]]
     --------------------------
 
     Show repository or file history.
 
     For URLs of the form ``/log/{revision}``, a list of changesets starting at
     the specified changeset identifier is shown. If ``{revision}`` is not
     defined, the default is ``tip``. This form is equivalent to the
     ``changelog`` handler.
 
     For URLs of the form ``/log/{revision}/{file}``, the history for a specific
     file will be shown. This form is equivalent to the ``filelog`` handler.
     """
 
     if 'file' in req.form and req.form['file'][0]:
         return filelog(web, req, tmpl)
     else:
         return changelog(web, req, tmpl)
 
 @webcommand('rawfile')
 def rawfile(web, req, tmpl):
     guessmime = web.configbool('web', 'guessmime', False)
 
     path = webutil.cleanpath(web.repo, req.form.get('file', [''])[0])
     if not path:
         content = manifest(web, req, tmpl)
         req.respond(HTTP_OK, web.ctype)
         return content
 
     try:
         fctx = webutil.filectx(web.repo, req)
     except error.LookupError as inst:
         try:
             content = manifest(web, req, tmpl)
             req.respond(HTTP_OK, web.ctype)
             return content
         except ErrorResponse:
             raise inst
 
     path = fctx.path()
     text = fctx.data()
     mt = 'application/binary'
     if guessmime:
         mt = mimetypes.guess_type(path)[0]
         if mt is None:
             if util.binary(text):
                 mt = 'application/binary'
             else:
                 mt = 'text/plain'
     if mt.startswith('text/'):
         mt += '; charset="%s"' % encoding.encoding
 
     req.respond(HTTP_OK, mt, path, body=text)
     return []
 
 def _filerevision(web, req, tmpl, fctx):
     f = fctx.path()
     text = fctx.data()
     parity = paritygen(web.stripecount)
 
     if util.binary(text):
         mt = mimetypes.guess_type(f)[0] or 'application/octet-stream'
         text = '(binary:%s)' % mt
 
     def lines():
         for lineno, t in enumerate(text.splitlines(True)):
             yield {"line": t,
                    "lineid": "l%d" % (lineno + 1),
                    "linenumber": "% 6d" % (lineno + 1),
                    "parity": next(parity)}
 
     return tmpl("filerevision",
                 file=f,
                 path=webutil.up(f),
                 text=lines(),
                 symrev=webutil.symrevorshortnode(req, fctx),
                 rename=webutil.renamelink(fctx),
                 permissions=fctx.manifest().flags(f),
                 **webutil.commonentry(web.repo, fctx))
 
 @webcommand('file')
 def file(web, req, tmpl):
     """
     /file/{revision}[/{path}]
     -------------------------
 
     Show information about a directory or file in the repository.
 
     Info about the ``path`` given as a URL parameter will be rendered.
 
     If ``path`` is a directory, information about the entries in that
     directory will be rendered. This form is equivalent to the ``manifest``
     handler.
 
     If ``path`` is a file, information about that file will be shown via
     the ``filerevision`` template.
 
     If ``path`` is not defined, information about the root directory will
     be rendered.
     """
     path = webutil.cleanpath(web.repo, req.form.get('file', [''])[0])
     if not path:
         return manifest(web, req, tmpl)
     try:
         return _filerevision(web, req, tmpl, webutil.filectx(web.repo, req))
     except error.LookupError as inst:
         try:
             return manifest(web, req, tmpl)
         except ErrorResponse:
             raise inst
 
 def _search(web, req, tmpl):
     MODE_REVISION = 'rev'
     MODE_KEYWORD = 'keyword'
     MODE_REVSET = 'revset'
 
     def revsearch(ctx):
         yield ctx
 
     def keywordsearch(query):
         lower = encoding.lower
         qw = lower(query).split()
 
         def revgen():
             cl = web.repo.changelog
             for i in xrange(len(web.repo) - 1, 0, -100):
                 l = []
                 for j in cl.revs(max(0, i - 99), i):
                     ctx = web.repo[j]
                     l.append(ctx)
                 l.reverse()
                 for e in l:
                     yield e
 
         for ctx in revgen():
             miss = 0
             for q in qw:
                 if not (q in lower(ctx.user()) or
                         q in lower(ctx.description()) or
                         q in lower(" ".join(ctx.files()))):
                     miss = 1
                     break
             if miss:
                 continue
 
             yield ctx
 
     def revsetsearch(revs):
         for r in revs:
             yield web.repo[r]
 
     searchfuncs = {
         MODE_REVISION: (revsearch, 'exact revision search'),
         MODE_KEYWORD: (keywordsearch, 'literal keyword search'),
         MODE_REVSET: (revsetsearch, 'revset expression search'),
     }
 
     def getsearchmode(query):
         try:
             ctx = web.repo[query]
         except (error.RepoError, error.LookupError):
             # query is not an exact revision pointer, need to
             # decide if it's a revset expression or keywords
             pass
         else:
             return MODE_REVISION, ctx
 
         revdef = 'reverse(%s)' % query
         try:
             tree = revsetlang.parse(revdef)
         except error.ParseError:
             # can't parse to a revset tree
             return MODE_KEYWORD, query
 
         if revsetlang.depth(tree) <= 2:
             # no revset syntax used
             return MODE_KEYWORD, query
 
         if any((token, (value or '')[:3]) == ('string', 're:')
                for token, value, pos in revsetlang.tokenize(revdef)):
             return MODE_KEYWORD, query
 
         funcsused = revsetlang.funcsused(tree)
         if not funcsused.issubset(revset.safesymbols):
             return MODE_KEYWORD, query
 
         mfunc = revset.match(web.repo.ui, revdef)
         try:
             revs = mfunc(web.repo)
             return MODE_REVSET, revs
             # ParseError: wrongly placed tokens, wrongs arguments, etc
             # RepoLookupError: no such revision, e.g. in 'revision:'
             # Abort: bookmark/tag not exists
             # LookupError: ambiguous identifier, e.g. in '(bc)' on a large repo
         except (error.ParseError, error.RepoLookupError, error.Abort,
                 LookupError):
             return MODE_KEYWORD, query
 
     def changelist(**map):
         count = 0
 
         for ctx in searchfunc[0](funcarg):
             count += 1
             n = ctx.node()
             showtags = webutil.showtag(web.repo, tmpl, 'changelogtag', n)
             files = webutil.listfilediffs(tmpl, ctx.files(), n, web.maxfiles)
 
             yield tmpl('searchentry',
                        parity=next(parity),
                        changelogtag=showtags,
                        files=files,
                        **webutil.commonentry(web.repo, ctx))
 
             if count >= revcount:
                 break
 
     query = req.form['rev'][0]
     revcount = web.maxchanges
     if 'revcount' in req.form:
         try:
             revcount = int(req.form.get('revcount', [revcount])[0])
             revcount = max(revcount, 1)
             tmpl.defaults['sessionvars']['revcount'] = revcount
         except ValueError:
             pass
 
     lessvars = copy.copy(tmpl.defaults['sessionvars'])
     lessvars['revcount'] = max(revcount / 2, 1)
     lessvars['rev'] = query
     morevars = copy.copy(tmpl.defaults['sessionvars'])
     morevars['revcount'] = revcount * 2
     morevars['rev'] = query
 
     mode, funcarg = getsearchmode(query)
 
     if 'forcekw' in req.form:
         showforcekw = ''
         showunforcekw = searchfuncs[mode][1]
         mode = MODE_KEYWORD
         funcarg = query
     else:
         if mode != MODE_KEYWORD:
             showforcekw = searchfuncs[MODE_KEYWORD][1]
         else:
             showforcekw = ''
         showunforcekw = ''
 
     searchfunc = searchfuncs[mode]
 
     tip = web.repo['tip']
     parity = paritygen(web.stripecount)
 
     return tmpl('search', query=query, node=tip.hex(), symrev='tip',
                 entries=changelist, archives=web.archivelist("tip"),
                 morevars=morevars, lessvars=lessvars,
                 modedesc=searchfunc[1],
                 showforcekw=showforcekw, showunforcekw=showunforcekw)
 
 @webcommand('changelog')
 def changelog(web, req, tmpl, shortlog=False):
     """
     /changelog[/{revision}]
     -----------------------
 
     Show information about multiple changesets.
 
     If the optional ``revision`` URL argument is absent, information about
     all changesets starting at ``tip`` will be rendered. If the ``revision``
     argument is present, changesets will be shown starting from the specified
     revision.
 
     If ``revision`` is absent, the ``rev`` query string argument may be
     defined. This will perform a search for changesets.
 
     The argument for ``rev`` can be a single revision, a revision set,
     or a literal keyword to search for in changeset data (equivalent to
     :hg:`log -k`).
 
     The ``revcount`` query string argument defines the maximum numbers of
     changesets to render.
 
     For non-searches, the ``changelog`` template will be rendered.
     """
 
     query = ''
     if 'node' in req.form:
         ctx = webutil.changectx(web.repo, req)
         symrev = webutil.symrevorshortnode(req, ctx)
     elif 'rev' in req.form:
         return _search(web, req, tmpl)
     else:
         ctx = web.repo['tip']
         symrev = 'tip'
 
     def changelist():
         revs = []
         if pos != -1:
             revs = web.repo.changelog.revs(pos, 0)
         curcount = 0
         for rev in revs:
             curcount += 1
             if curcount > revcount + 1:
                 break
 
             entry = webutil.changelistentry(web, web.repo[rev], tmpl)
             entry['parity'] = next(parity)
             yield entry
 
     if shortlog:
         revcount = web.maxshortchanges
     else:
         revcount = web.maxchanges
 
     if 'revcount' in req.form:
         try:
             revcount = int(req.form.get('revcount', [revcount])[0])
             revcount = max(revcount, 1)
             tmpl.defaults['sessionvars']['revcount'] = revcount
         except ValueError:
             pass
 
     lessvars = copy.copy(tmpl.defaults['sessionvars'])
     lessvars['revcount'] = max(revcount / 2, 1)
     morevars = copy.copy(tmpl.defaults['sessionvars'])
     morevars['revcount'] = revcount * 2
 
     count = len(web.repo)
     pos = ctx.rev()
     parity = paritygen(web.stripecount)
 
     changenav = webutil.revnav(web.repo).gen(pos, revcount, count)
 
     entries = list(changelist())
     latestentry = entries[:1]
     if len(entries) > revcount:
         nextentry = entries[-1:]
         entries = entries[:-1]
     else:
         nextentry = []
 
     return tmpl(shortlog and 'shortlog' or 'changelog', changenav=changenav,
                 node=ctx.hex(), rev=pos, symrev=symrev, changesets=count,
                 entries=entries,
                 latestentry=latestentry, nextentry=nextentry,
                 archives=web.archivelist("tip"), revcount=revcount,
                 morevars=morevars, lessvars=lessvars, query=query)
 
 @webcommand('shortlog')
 def shortlog(web, req, tmpl):
     """
     /shortlog
     ---------
 
     Show basic information about a set of changesets.
 
     This accepts the same parameters as the ``changelog`` handler. The only
     difference is the ``shortlog`` template will be rendered instead of the
     ``changelog`` template.
     """
     return changelog(web, req, tmpl, shortlog=True)
 
 @webcommand('changeset')
 def changeset(web, req, tmpl):
     """
     /changeset[/{revision}]
     -----------------------
 
     Show information about a single changeset.
 
     A URL path argument is the changeset identifier to show. See ``hg help
     revisions`` for possible values. If not defined, the ``tip`` changeset
     will be shown.
 
     The ``changeset`` template is rendered. Contents of the ``changesettag``,
     ``changesetbookmark``, ``filenodelink``, ``filenolink``, and the many
     templates related to diffs may all be used to produce the output.
     """
     ctx = webutil.changectx(web.repo, req)
 
     return tmpl('changeset', **webutil.changesetentry(web, req, tmpl, ctx))
 
 rev = webcommand('rev')(changeset)
 
 def decodepath(path):
     """Hook for mapping a path in the repository to a path in the
     working copy.
 
     Extensions (e.g., largefiles) can override this to remap files in
     the virtual file system presented by the manifest command below."""
     return path
 
 @webcommand('manifest')
 def manifest(web, req, tmpl):
     """
     /manifest[/{revision}[/{path}]]
     -------------------------------
 
     Show information about a directory.
 
     If the URL path arguments are omitted, information about the root
     directory for the ``tip`` changeset will be shown.
 
     Because this handler can only show information for directories, it
     is recommended to use the ``file`` handler instead, as it can handle both
     directories and files.
 
     The ``manifest`` template will be rendered for this handler.
     """
     if 'node' in req.form:
         ctx = webutil.changectx(web.repo, req)
         symrev = webutil.symrevorshortnode(req, ctx)
     else:
         ctx = web.repo['tip']
         symrev = 'tip'
     path = webutil.cleanpath(web.repo, req.form.get('file', [''])[0])
     mf = ctx.manifest()
     node = ctx.node()
 
     files = {}
     dirs = {}
     parity = paritygen(web.stripecount)
 
     if path and path[-1] != "/":
         path += "/"
     l = len(path)
     abspath = "/" + path
 
     for full, n in mf.iteritems():
         # the virtual path (working copy path) used for the full
         # (repository) path
         f = decodepath(full)
 
         if f[:l] != path:
             continue
         remain = f[l:]
         elements = remain.split('/')
         if len(elements) == 1:
             files[remain] = full
         else:
             h = dirs # need to retain ref to dirs (root)
             for elem in elements[0:-1]:
                 if elem not in h:
                     h[elem] = {}
                 h = h[elem]
                 if len(h) > 1:
                     break
             h[None] = None # denotes files present
 
     if mf and not files and not dirs:
         raise ErrorResponse(HTTP_NOT_FOUND, 'path not found: ' + path)
 
     def filelist(**map):
         for f in sorted(files):
             full = files[f]
 
             fctx = ctx.filectx(full)
             yield {"file": full,
                    "parity": next(parity),
                    "basename": f,
                    "date": fctx.date(),
                    "size": fctx.size(),
                    "permissions": mf.flags(full)}
 
     def dirlist(**map):
         for d in sorted(dirs):
 
             emptydirs = []
             h = dirs[d]
             while isinstance(h, dict) and len(h) == 1:
                 k, v = h.items()[0]
                 if v:
                     emptydirs.append(k)
                 h = v
 
             path = "%s%s" % (abspath, d)
             yield {"parity": next(parity),
                    "path": path,
                    "emptydirs": "/".join(emptydirs),
                    "basename": d}
 
     return tmpl("manifest",
                 symrev=symrev,
                 path=abspath,
                 up=webutil.up(abspath),
                 upparity=next(parity),
                 fentries=filelist,
                 dentries=dirlist,
                 archives=web.archivelist(hex(node)),
                 **webutil.commonentry(web.repo, ctx))
 
 @webcommand('tags')
 def tags(web, req, tmpl):
     """
     /tags
     -----
 
     Show information about tags.
 
     No arguments are accepted.
 
     The ``tags`` template is rendered.
     """
     i = list(reversed(web.repo.tagslist()))
     parity = paritygen(web.stripecount)
 
     def entries(notip, latestonly, **map):
         t = i
         if notip:
             t = [(k, n) for k, n in i if k != "tip"]
         if latestonly:
             t = t[:1]
         for k, n in t:
             yield {"parity": next(parity),
                    "tag": k,
                    "date": web.repo[n].date(),
                    "node": hex(n)}
 
     return tmpl("tags",
                 node=hex(web.repo.changelog.tip()),
                 entries=lambda **x: entries(False, False, **x),
                 entriesnotip=lambda **x: entries(True, False, **x),
                 latestentry=lambda **x: entries(True, True, **x))
 
 @webcommand('bookmarks')
 def bookmarks(web, req, tmpl):
     """
     /bookmarks
     ----------
 
     Show information about bookmarks.
 
     No arguments are accepted.
 
     The ``bookmarks`` template is rendered.
     """
     i = [b for b in web.repo._bookmarks.items() if b[1] in web.repo]
     sortkey = lambda b: (web.repo[b[1]].rev(), b[0])
     i = sorted(i, key=sortkey, reverse=True)
     parity = paritygen(web.stripecount)
 
     def entries(latestonly, **map):
         t = i
         if latestonly:
             t = i[:1]
         for k, n in t:
             yield {"parity": next(parity),
                    "bookmark": k,
                    "date": web.repo[n].date(),
                    "node": hex(n)}
 
     if i:
         latestrev = i[0][1]
     else:
         latestrev = -1
 
     return tmpl("bookmarks",
                 node=hex(web.repo.changelog.tip()),
                 lastchange=[{"date": web.repo[latestrev].date()}],
                 entries=lambda **x: entries(latestonly=False, **x),
                 latestentry=lambda **x: entries(latestonly=True, **x))
 
 @webcommand('branches')
 def branches(web, req, tmpl):
     """
     /branches
     ---------
 
     Show information about branches.
 
     All known branches are contained in the output, even closed branches.
 
     No arguments are accepted.
 
     The ``branches`` template is rendered.
     """
     entries = webutil.branchentries(web.repo, web.stripecount)
     latestentry = webutil.branchentries(web.repo, web.stripecount, 1)
     return tmpl('branches', node=hex(web.repo.changelog.tip()),
                 entries=entries, latestentry=latestentry)
 
 @webcommand('summary')
 def summary(web, req, tmpl):
     """
     /summary
     --------
 
     Show a summary of repository state.
 
     Information about the latest changesets, bookmarks, tags, and branches
     is captured by this handler.
 
     The ``summary`` template is rendered.
     """
     i = reversed(web.repo.tagslist())
 
     def tagentries(**map):
         parity = paritygen(web.stripecount)
         count = 0
         for k, n in i:
             if k == "tip": # skip tip
                 continue
 
             count += 1
             if count > 10: # limit to 10 tags
                 break
 
             yield tmpl("tagentry",
                        parity=next(parity),
                        tag=k,
                        node=hex(n),
                        date=web.repo[n].date())
 
     def bookmarks(**map):
         parity = paritygen(web.stripecount)
         marks = [b for b in web.repo._bookmarks.items() if b[1] in web.repo]
         sortkey = lambda b: (web.repo[b[1]].rev(), b[0])
         marks = sorted(marks, key=sortkey, reverse=True)
         for k, n in marks[:10]:  # limit to 10 bookmarks
             yield {'parity': next(parity),
                    'bookmark': k,
                    'date': web.repo[n].date(),
                    'node': hex(n)}
 
     def changelist(**map):
         parity = paritygen(web.stripecount, offset=start - end)
         l = [] # build a list in forward order for efficiency
         revs = []
         if start < end:
             revs = web.repo.changelog.revs(start, end - 1)
         for i in revs:
             ctx = web.repo[i]
 
             l.append(tmpl(
                 'shortlogentry',
                 parity=next(parity),
                 **webutil.commonentry(web.repo, ctx)))
 
         for entry in reversed(l):
             yield entry
 
     tip = web.repo['tip']
     count = len(web.repo)
     start = max(0, count - web.maxchanges)
     end = min(count, start + web.maxchanges)
 
     return tmpl("summary",
                 desc=web.config("web", "description", "unknown"),
                 owner=get_contact(web.config) or "unknown",
                 lastchange=tip.date(),
                 tags=tagentries,
                 bookmarks=bookmarks,
                 branches=webutil.branchentries(web.repo, web.stripecount, 10),
                 shortlog=changelist,
                 node=tip.hex(),
                 symrev='tip',
                 archives=web.archivelist("tip"),
                 labels=web.configlist('web', 'labels'))
 
 @webcommand('filediff')
 def filediff(web, req, tmpl):
     """
     /diff/{revision}/{path}
     -----------------------
 
     Show how a file changed in a particular commit.
 
     The ``filediff`` template is rendered.
 
     This handler is registered under both the ``/diff`` and ``/filediff``
     paths. ``/diff`` is used in modern code.
     """
     fctx, ctx = None, None
     try:
         fctx = webutil.filectx(web.repo, req)
     except LookupError:
         ctx = webutil.changectx(web.repo, req)
         path = webutil.cleanpath(web.repo, req.form['file'][0])
         if path not in ctx.files():
             raise
 
     if fctx is not None:
         path = fctx.path()
         ctx = fctx.changectx()
     basectx = ctx.p1()
 
     style = web.config('web', 'style', 'paper')
     if 'style' in req.form:
         style = req.form['style'][0]
 
     diffs = webutil.diffs(web, tmpl, ctx, basectx, [path], style)
     if fctx is not None:
         rename = webutil.renamelink(fctx)
         ctx = fctx
     else:
         rename = []
         ctx = ctx
     return tmpl("filediff",
                 file=path,
                 symrev=webutil.symrevorshortnode(req, ctx),
                 rename=rename,
                 diff=diffs,
                 **webutil.commonentry(web.repo, ctx))
 
 diff = webcommand('diff')(filediff)
 
 @webcommand('comparison')
 def comparison(web, req, tmpl):
     """
     /comparison/{revision}/{path}
     -----------------------------
 
     Show a comparison between the old and new versions of a file from changes
     made on a particular revision.
 
     This is similar to the ``diff`` handler. However, this form features
     a split or side-by-side diff rather than a unified diff.
 
     The ``context`` query string argument can be used to control the lines of
     context in the diff.
 
     The ``filecomparison`` template is rendered.
     """
     ctx = webutil.changectx(web.repo, req)
     if 'file' not in req.form:
         raise ErrorResponse(HTTP_NOT_FOUND, 'file not given')
     path = webutil.cleanpath(web.repo, req.form['file'][0])
 
     parsecontext = lambda v: v == 'full' and -1 or int(v)
     if 'context' in req.form:
         context = parsecontext(req.form['context'][0])
     else:
         context = parsecontext(web.config('web', 'comparisoncontext', '5'))
 
     def filelines(f):
         if util.binary(f.data()):
             mt = mimetypes.guess_type(f.path())[0]
             if not mt:
                 mt = 'application/octet-stream'
             return [_('(binary file %s, hash: %s)') % (mt, hex(f.filenode()))]
         return f.data().splitlines()
 
     fctx = None
     parent = ctx.p1()
     leftrev = parent.rev()
     leftnode = parent.node()
     rightrev = ctx.rev()
     rightnode = ctx.node()
     if path in ctx:
         fctx = ctx[path]
         rightlines = filelines(fctx)
         if path not in parent:
             leftlines = ()
         else:
             pfctx = parent[path]
             leftlines = filelines(pfctx)
     else:
         rightlines = ()
         pfctx = ctx.parents()[0][path]
         leftlines = filelines(pfctx)
 
     comparison = webutil.compare(tmpl, context, leftlines, rightlines)
     if fctx is not None:
         rename = webutil.renamelink(fctx)
         ctx = fctx
     else:
         rename = []
         ctx = ctx
     return tmpl('filecomparison',
                 file=path,
                 symrev=webutil.symrevorshortnode(req, ctx),
                 rename=rename,
                 leftrev=leftrev,
                 leftnode=hex(leftnode),
                 rightrev=rightrev,
                 rightnode=hex(rightnode),
                 comparison=comparison,
                 **webutil.commonentry(web.repo, ctx))
 
 @webcommand('annotate')
 def annotate(web, req, tmpl):
     """
     /annotate/{revision}/{path}
     ---------------------------
 
     Show changeset information for each line in a file.
 
     The ``fileannotate`` template is rendered.
     """
     fctx = webutil.filectx(web.repo, req)
     f = fctx.path()
     parity = paritygen(web.stripecount)
 
     # parents() is called once per line and several lines likely belong to
     # same revision. So it is worth caching.
     # TODO there are still redundant operations within basefilectx.parents()
     # and from the fctx.annotate() call itself that could be cached.
     parentscache = {}
     def parents(f):
         rev = f.rev()
         if rev not in parentscache:
             parentscache[rev] = []
             for p in f.parents():
                 entry = {
                     'node': p.hex(),
                     'rev': p.rev(),
                 }
                 parentscache[rev].append(entry)
 
         for p in parentscache[rev]:
             yield p
 
     def annotate(**map):
         if util.binary(fctx.data()):
             mt = (mimetypes.guess_type(fctx.path())[0]
                   or 'application/octet-stream')
             lines = [((fctx.filectx(fctx.filerev()), 1), '(binary:%s)' % mt)]
         else:
             lines = webutil.annotate(fctx, web.repo.ui)
 
         previousrev = None
         blockparitygen = paritygen(1)
         for lineno, ((f, targetline), l) in enumerate(lines):
             rev = f.rev()
             if rev != previousrev:
                 blockhead = True
                 blockparity = next(blockparitygen)
             else:
                 blockhead = None
             previousrev = rev
             yield {"parity": next(parity),
                    "node": f.hex(),
                    "rev": rev,
                    "author": f.user(),
                    "parents": parents(f),
                    "desc": f.description(),
                    "extra": f.extra(),
                    "file": f.path(),
                    "blockhead": blockhead,
                    "blockparity": blockparity,
                    "targetline": targetline,
                    "line": l,
                    "lineno": lineno + 1,
                    "lineid": "l%d" % (lineno + 1),
                    "linenumber": "% 6d" % (lineno + 1),
                    "revdate": f.date()}
 
     return tmpl("fileannotate",
                 file=f,
                 annotate=annotate,
                 path=webutil.up(f),
                 symrev=webutil.symrevorshortnode(req, fctx),
                 rename=webutil.renamelink(fctx),
                 permissions=fctx.manifest().flags(f),
                 **webutil.commonentry(web.repo, fctx))
 
 @webcommand('filelog')
 def filelog(web, req, tmpl):
     """
     /filelog/{revision}/{path}
     --------------------------
 
     Show information about the history of a file in the repository.
 
     The ``revcount`` query string argument can be defined to control the
     maximum number of entries to show.
 
     The ``filelog`` template will be rendered.
     """
 
     try:
         fctx = webutil.filectx(web.repo, req)
         f = fctx.path()
         fl = fctx.filelog()
     except error.LookupError:
         f = webutil.cleanpath(web.repo, req.form['file'][0])
         fl = web.repo.file(f)
         numrevs = len(fl)
         if not numrevs: # file doesn't exist at all
             raise
         rev = webutil.changectx(web.repo, req).rev()
         first = fl.linkrev(0)
         if rev < first: # current rev is from before file existed
             raise
         frev = numrevs - 1
         while fl.linkrev(frev) > rev:
             frev -= 1
         fctx = web.repo.filectx(f, fl.linkrev(frev))
 
     revcount = web.maxshortchanges
     if 'revcount' in req.form:
         try:
             revcount = int(req.form.get('revcount', [revcount])[0])
             revcount = max(revcount, 1)
             tmpl.defaults['sessionvars']['revcount'] = revcount
         except ValueError:
             pass
 
     lrange = webutil.linerange(req)
 
     lessvars = copy.copy(tmpl.defaults['sessionvars'])
     lessvars['revcount'] = max(revcount / 2, 1)
     morevars = copy.copy(tmpl.defaults['sessionvars'])
     morevars['revcount'] = revcount * 2
 
     patch = 'patch' in req.form
     if patch:
         lessvars['patch'] = morevars['patch'] = req.form['patch'][0]
+    descend = 'descend' in req.form
+    if descend:
+        lessvars['descend'] = morevars['descend'] = req.form['descend'][0]
 
     count = fctx.filerev() + 1
     start = max(0, count - revcount) # first rev on this page
     end = min(count, start + revcount) # last rev on this page
     parity = paritygen(web.stripecount, offset=start - end)
 
     repo = web.repo
     revs = fctx.filelog().revs(start, end - 1)
     entries = []
 
     diffstyle = web.config('web', 'style', 'paper')
     if 'style' in req.form:
         diffstyle = req.form['style'][0]
 
     def diff(fctx, linerange=None):
         ctx = fctx.changectx()
         basectx = ctx.p1()
         path = fctx.path()
         return webutil.diffs(web, tmpl, ctx, basectx, [path], diffstyle,
                              linerange=linerange,
                              lineidprefix='%s-' % ctx.hex()[:12])
 
     linerange = None
     if lrange is not None:
         linerange = webutil.formatlinerange(*lrange)
         # deactivate numeric nav links when linerange is specified as this
         # would required a dedicated "revnav" class
         nav = None
-        ancestors = context.blockancestors(fctx, *lrange)
-        for i, (c, lr) in enumerate(ancestors, 1):
+        if descend:
+            it = context.blockdescendants(fctx, *lrange)
+        else:
+            it = context.blockancestors(fctx, *lrange)
+        for i, (c, lr) in enumerate(it, 1):
             diffs = None
             if patch:
                 diffs = diff(c, linerange=lr)
             # follow renames accross filtered (not in range) revisions
             path = c.path()
             entries.append(dict(
                 parity=next(parity),
                 filerev=c.rev(),
                 file=path,
                 diff=diffs,
                 linerange=webutil.formatlinerange(*lr),
                 **webutil.commonentry(repo, c)))
             if i == revcount:
                 break
         lessvars['linerange'] = webutil.formatlinerange(*lrange)
         morevars['linerange'] = lessvars['linerange']
     else:
         for i in revs:
             iterfctx = fctx.filectx(i)
             diffs = None
             if patch:
                 diffs = diff(iterfctx)
             entries.append(dict(
                 parity=next(parity),
                 filerev=i,
                 file=f,
                 diff=diffs,
                 rename=webutil.renamelink(iterfctx),
                 **webutil.commonentry(repo, iterfctx)))
         entries.reverse()
         revnav = webutil.filerevnav(web.repo, fctx.path())
         nav = revnav.gen(end - 1, revcount, count)
 
     latestentry = entries[:1]
 
     return tmpl("filelog",
                 file=f,
                 nav=nav,
                 symrev=webutil.symrevorshortnode(req, fctx),
                 entries=entries,
+                descend=descend,
                 patch=patch,
                 latestentry=latestentry,
                 linerange=linerange,
                 revcount=revcount,
                 morevars=morevars,
                 lessvars=lessvars,
                 **webutil.commonentry(web.repo, fctx))
 
 @webcommand('archive')
 def archive(web, req, tmpl):
     """
     /archive/{revision}.{format}[/{path}]
     -------------------------------------
 
     Obtain an archive of repository content.
 
     The content and type of the archive is defined by a URL path parameter.
     ``format`` is the file extension of the archive type to be generated. e.g.
     ``zip`` or ``tar.bz2``. Not all archive types may be allowed by your
     server configuration.
 
     The optional ``path`` URL parameter controls content to include in the
     archive. If omitted, every file in the specified revision is present in the
     archive. If included, only the specified file or contents of the specified
     directory will be included in the archive.
 
     No template is used for this handler. Raw, binary content is generated.
     """
 
     type_ = req.form.get('type', [None])[0]
     allowed = web.configlist("web", "allow_archive")
     key = req.form['node'][0]
 
     if type_ not in web.archivespecs:
         msg = 'Unsupported archive type: %s' % type_
         raise ErrorResponse(HTTP_NOT_FOUND, msg)
 
     if not ((type_ in allowed or
         web.configbool("web", "allow" + type_, False))):
         msg = 'Archive type not allowed: %s' % type_
         raise ErrorResponse(HTTP_FORBIDDEN, msg)
 
     reponame = re.sub(r"\W+", "-", os.path.basename(web.reponame))
     cnode = web.repo.lookup(key)
     arch_version = key
     if cnode == key or key == 'tip':
         arch_version = short(cnode)
     name = "%s-%s" % (reponame, arch_version)
 
     ctx = webutil.changectx(web.repo, req)
     pats = []
     matchfn = scmutil.match(ctx, [])
     file = req.form.get('file', None)
     if file:
         pats = ['path:' + file[0]]
         matchfn = scmutil.match(ctx, pats, default='path')
         if pats:
             files = [f for f in ctx.manifest().keys() if matchfn(f)]
             if not files:
                 raise ErrorResponse(HTTP_NOT_FOUND,
                     'file(s) not found: %s' % file[0])
 
     mimetype, artype, extension, encoding = web.archivespecs[type_]
     headers = [
         ('Content-Disposition', 'attachment; filename=%s%s' % (name, extension))
         ]
     if encoding:
         headers.append(('Content-Encoding', encoding))
     req.headers.extend(headers)
     req.respond(HTTP_OK, mimetype)
 
     archival.archive(web.repo, req, cnode, artype, prefix=name,
                      matchfn=matchfn,
                      subrepos=web.configbool("web", "archivesubrepos"))
     return []
 
 
 @webcommand('static')
 def static(web, req, tmpl):
     fname = req.form['file'][0]
     # a repo owner may set web.static in .hg/hgrc to get any file
     # readable by the user running the CGI script
     static = web.config("web", "static", None, untrusted=False)
     if not static:
         tp = web.templatepath or templater.templatepaths()
         if isinstance(tp, str):
             tp = [tp]
         static = [os.path.join(p, 'static') for p in tp]
     staticfile(static, fname, req)
     return []
 
 @webcommand('graph')
 def graph(web, req, tmpl):
     """
     /graph[/{revision}]
     -------------------
 
     Show information about the graphical topology of the repository.
 
     Information rendered by this handler can be used to create visual
     representations of repository topology.
 
     The ``revision`` URL parameter controls the starting changeset.
 
     The ``revcount`` query string argument can define the number of changesets
     to show information for.
 
     This handler will render the ``graph`` template.
     """
 
     if 'node' in req.form:
         ctx = webutil.changectx(web.repo, req)
         symrev = webutil.symrevorshortnode(req, ctx)
     else:
         ctx = web.repo['tip']
         symrev = 'tip'
     rev = ctx.rev()
 
     bg_height = 39
     revcount = web.maxshortchanges
     if 'revcount' in req.form:
         try:
             revcount = int(req.form.get('revcount', [revcount])[0])
             revcount = max(revcount, 1)
             tmpl.defaults['sessionvars']['revcount'] = revcount
         except ValueError:
             pass
 
     lessvars = copy.copy(tmpl.defaults['sessionvars'])
     lessvars['revcount'] = max(revcount / 2, 1)
     morevars = copy.copy(tmpl.defaults['sessionvars'])
     morevars['revcount'] = revcount * 2
 
     count = len(web.repo)
     pos = rev
 
     uprev = min(max(0, count - 1), rev + revcount)
     downrev = max(0, rev - revcount)
     changenav = webutil.revnav(web.repo).gen(pos, revcount, count)
 
     tree = []
     if pos != -1:
         allrevs = web.repo.changelog.revs(pos, 0)
         revs = []
         for i in allrevs:
             revs.append(i)
             if len(revs) >= revcount:
                 break
 
         # We have to feed a baseset to dagwalker as it is expecting smartset
         # object. This does not have a big impact on hgweb performance itself
         # since hgweb graphing code is not itself lazy yet.
         dag = graphmod.dagwalker(web.repo, smartset.baseset(revs))
         # As we said one line above... not lazy.
         tree = list(graphmod.colored(dag, web.repo))
 
     def getcolumns(tree):
         cols = 0
         for (id, type, ctx, vtx, edges) in tree:
             if type != graphmod.CHANGESET:
                 continue
             cols = max(cols, max([edge[0] for edge in edges] or [0]),
                              max([edge[1] for edge in edges] or [0]))
         return cols
 
     def graphdata(usetuples, encodestr):
         data = []
 
         row = 0
         for (id, type, ctx, vtx, edges) in tree:
             if type != graphmod.CHANGESET:
                 continue
             node = str(ctx)
             age = encodestr(templatefilters.age(ctx.date()))
             desc = templatefilters.firstline(encodestr(ctx.description()))
             desc = cgi.escape(templatefilters.nonempty(desc))
             user = cgi.escape(templatefilters.person(encodestr(ctx.user())))
             branch = cgi.escape(encodestr(ctx.branch()))
             try:
                 branchnode = web.repo.branchtip(branch)
             except error.RepoLookupError:
                 branchnode = None
             branch = branch, branchnode == ctx.node()
 
             if usetuples:
                 data.append((node, vtx, edges, desc, user, age, branch,
                              [cgi.escape(encodestr(x)) for x in ctx.tags()],
                              [cgi.escape(encodestr(x))
                               for x in ctx.bookmarks()]))
             else:
                 edgedata = [{'col': edge[0], 'nextcol': edge[1],
                              'color': (edge[2] - 1) % 6 + 1,
                              'width': edge[3], 'bcolor': edge[4]}
                             for edge in edges]
 
                 data.append(
                     {'node': node,
                      'col': vtx[0],
                      'color': (vtx[1] - 1) % 6 + 1,
                      'edges': edgedata,
                      'row': row,
                      'nextrow': row + 1,
                      'desc': desc,
                      'user': user,
                      'age': age,
                      'bookmarks': webutil.nodebookmarksdict(
                          web.repo, ctx.node()),
                      'branches': webutil.nodebranchdict(web.repo, ctx),
                      'inbranch': webutil.nodeinbranch(web.repo, ctx),
                      'tags': webutil.nodetagsdict(web.repo, ctx.node())})
 
             row += 1
 
         return data
 
     cols = getcolumns(tree)
     rows = len(tree)
     canvasheight = (rows + 1) * bg_height - 27
 
     return tmpl('graph', rev=rev, symrev=symrev, revcount=revcount,
                 uprev=uprev,
                 lessvars=lessvars, morevars=morevars, downrev=downrev,
                 cols=cols, rows=rows,
                 canvaswidth=(cols + 1) * bg_height,
                 truecanvasheight=rows * bg_height,
                 canvasheight=canvasheight, bg_height=bg_height,
                 # {jsdata} will be passed to |json, so it must be in utf-8
                 jsdata=lambda **x: graphdata(True, encoding.fromlocal),
                 nodes=lambda **x: graphdata(False, str),
                 node=ctx.hex(), changenav=changenav)
 
 def _getdoc(e):
     doc = e[0].__doc__
     if doc:
         doc = _(doc).partition('\n')[0]
     else:
         doc = _('(no help text available)')
     return doc
 
 @webcommand('help')
 def help(web, req, tmpl):
     """
     /help[/{topic}]
     ---------------
 
     Render help documentation.
 
     This web command is roughly equivalent to :hg:`help`. If a ``topic``
     is defined, that help topic will be rendered. If not, an index of
     available help topics will be rendered.
 
     The ``help`` template will be rendered when requesting help for a topic.
     ``helptopics`` will be rendered for the index of help topics.
     """
     from .. import commands, help as helpmod  # avoid cycle
 
     topicname = req.form.get('node', [None])[0]
     if not topicname:
         def topics(**map):
             for entries, summary, _doc in helpmod.helptable:
                 yield {'topic': entries[0], 'summary': summary}
 
         early, other = [], []
         primary = lambda s: s.partition('|')[0]
         for c, e in commands.table.iteritems():
             doc = _getdoc(e)
             if 'DEPRECATED' in doc or c.startswith('debug'):
                 continue
             cmd = primary(c)
             if cmd.startswith('^'):
                 early.append((cmd[1:], doc))
             else:
                 other.append((cmd, doc))
 
         early.sort()
         other.sort()
 
         def earlycommands(**map):
             for c, doc in early:
                 yield {'topic': c, 'summary': doc}
 
         def othercommands(**map):
             for c, doc in other:
                 yield {'topic': c, 'summary': doc}
 
         return tmpl('helptopics', topics=topics, earlycommands=earlycommands,
                     othercommands=othercommands, title='Index')
 
     # Render an index of sub-topics.
     if topicname in helpmod.subtopics:
         topics = []
         for entries, summary, _doc in helpmod.subtopics[topicname]:
             topics.append({
                 'topic': '%s.%s' % (topicname, entries[0]),
                 'basename': entries[0],
                 'summary': summary,
             })
 
         return tmpl('helptopics', topics=topics, title=topicname,
                     subindex=True)
 
     u = webutil.wsgiui.load()
     u.verbose = True
 
     # Render a page from a sub-topic.
     if '.' in topicname:
         # TODO implement support for rendering sections, like
         # `hg help` works.
         topic, subtopic = topicname.split('.', 1)
         if topic not in helpmod.subtopics:
             raise ErrorResponse(HTTP_NOT_FOUND)
     else:
         topic = topicname
         subtopic = None
 
     try:
         doc = helpmod.help_(u, topic, subtopic=subtopic)
     except error.UnknownCommand:
         raise ErrorResponse(HTTP_NOT_FOUND)
     return tmpl('help', topic=topicname, doc=doc)
 
 # tell hggettext to extract docstrings from these functions:
 i18nfunctions = commands.values()

mercurial/templates/paper/filelog.tmpl

@@ -1,87 +1,87 b''
 {header}
 <title>{repo|escape}: {file|escape} history</title>
 <link rel="alternate" type="application/atom+xml"
    href="{url|urlescape}atom-log/tip/{file|urlescape}" title="Atom feed for {repo|escape}:{file}" />
 <link rel="alternate" type="application/rss+xml"
    href="{url|urlescape}rss-log/tip/{file|urlescape}" title="RSS feed for {repo|escape}:{file}" />
 </head>
 <body>
 
 <div class="container">
 <div class="menu">
 <div class="logo">
 <a href="{logourl}">
 <img src="{staticurl|urlescape}{logoimg}" alt="mercurial" /></a>
 </div>
 <ul>
 <li><a href="{url|urlescape}shortlog/{symrev}{sessionvars%urlparameter}">log</a></li>
 <li><a href="{url|urlescape}graph/{symrev}{sessionvars%urlparameter}">graph</a></li>
 <li><a href="{url|urlescape}tags{sessionvars%urlparameter}">tags</a></li>
 <li><a href="{url|urlescape}bookmarks{sessionvars%urlparameter}">bookmarks</a></li>
 <li><a href="{url|urlescape}branches{sessionvars%urlparameter}">branches</a></li>
 </ul>
 <ul>
 <li><a href="{url|urlescape}rev/{symrev}{sessionvars%urlparameter}">changeset</a></li>
 <li><a href="{url|urlescape}file/{symrev}{path|urlescape}{sessionvars%urlparameter}">browse</a></li>
 </ul>
 <ul>
 <li><a href="{url|urlescape}file/{symrev}/{file|urlescape}{sessionvars%urlparameter}">file</a></li>
 <li><a href="{url|urlescape}diff/{symrev}/{file|urlescape}{sessionvars%urlparameter}">diff</a></li>
 <li><a href="{url|urlescape}comparison/{symrev}/{file|urlescape}{sessionvars%urlparameter}">comparison</a></li>
 <li><a href="{url|urlescape}annotate/{symrev}/{file|urlescape}{sessionvars%urlparameter}">annotate</a></li>
 <li class="active">file log</li>
 <li><a href="{url|urlescape}raw-file/{symrev}/{file|urlescape}">raw</a></li>
 </ul>
 <ul>
 <li><a href="{url|urlescape}help{sessionvars%urlparameter}">help</a></li>
 </ul>
 <div class="atom-logo">
 <a href="{url|urlescape}atom-log/tip/{file|urlescape}" title="subscribe to atom feed">
 <img class="atom-logo" src="{staticurl|urlescape}feed-icon-14x14.png" alt="atom feed" />
 </a>
 </div>
 </div>
 
 <div class="main">
 <h2 class="breadcrumb"><a href="/">Mercurial</a> {pathdef%breadcrumb}</h2>
 <h3>
  log {file|escape} @ {rev}:<a href="{url|urlescape}rev/{node|short}{sessionvars%urlparameter}">{node|short}</a>
  {branch%changelogbranchname}{tags%changelogtag}{bookmarks%changelogtag}
  {if(linerange,
-' (following lines {linerange} <a href="{url|urlescape}log/{symrev}/{file|urlescape}{sessionvars%urlparameter}">back to filelog</a>)')}
+' (following lines {linerange}{if(descend, ', descending')} <a href="{url|urlescape}log/{symrev}/{file|urlescape}{sessionvars%urlparameter}">back to filelog</a>)')}
 </h3>
 
 <form class="search" action="{url|urlescape}log">
 {sessionvars%hiddenformentry}
 <p><input name="rev" id="search1" type="text" size="30" /></p>
 <div id="hint">{searchhint}</div>
 </form>
 
 <div class="navigate">
 <a href="{url|urlescape}log/{symrev}/{file|urlescape}{lessvars%urlparameter}">less</a>
 <a href="{url|urlescape}log/{symrev}/{file|urlescape}{morevars%urlparameter}">more</a>
 | {nav%filenav}</div>
 
 <table class="bigtable">
 <thead>
  <tr>
   <th class="age">age</th>
   <th class="author">author</th>
   <th class="description">description</th>
  </tr>
 </thead>
 <tbody class="stripes2">
 {entries%filelogentry}
 </tbody>
 </table>
 
 <div class="navigate">
 <a href="{url|urlescape}log/{symrev}/{file|urlescape}{lessvars%urlparameter}">less</a>
 <a href="{url|urlescape}log/{symrev}/{file|urlescape}{morevars%urlparameter}">more</a>
 | {nav%filenav}
 </div>
 
 </div>
 </div>
 
 {footer}

tests/test-hgweb-filelog.t

@@ -1,1641 +1,1805 b''
 #require serve
 
   $ hg init test
   $ cd test
   $ echo b > b
   $ hg ci -Am "b"
   adding b
   $ echo a > a
   $ hg ci -Am "first a"
   adding a
   $ hg tag -r 1 a-tag
   $ hg bookmark -r 1 a-bookmark
   $ hg rm a
   $ hg ci -m "del a"
   $ hg branch a-branch
   marked working directory as branch a-branch
   (branches are permanent and global, did you want a bookmark?)
   $ echo b > a
   $ hg ci -Am "second a"
   adding a
   $ hg rm a
   $ hg ci -m "del2 a"
   $ hg mv b c
   $ hg ci -m "mv b"
   $ echo c >> c
   $ hg ci -m "change c"
   $ hg log -p
   changeset:   7:46c1a66bd8fc
   branch:      a-branch
   tag:         tip
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     change c
   
   diff -r c9637d3cc8ef -r 46c1a66bd8fc c
   --- a/c	Thu Jan 01 00:00:00 1970 +0000
   +++ b/c	Thu Jan 01 00:00:00 1970 +0000
   @@ -1,1 +1,2 @@
    b
   +c
   
   changeset:   6:c9637d3cc8ef
   branch:      a-branch
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     mv b
   
   diff -r 958bd88be4eb -r c9637d3cc8ef b
   --- a/b	Thu Jan 01 00:00:00 1970 +0000
   +++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
   @@ -1,1 +0,0 @@
   -b
   diff -r 958bd88be4eb -r c9637d3cc8ef c
   --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
   +++ b/c	Thu Jan 01 00:00:00 1970 +0000
   @@ -0,0 +1,1 @@
   +b
   
   changeset:   5:958bd88be4eb
   branch:      a-branch
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     del2 a
   
   diff -r 3f41bc784e7e -r 958bd88be4eb a
   --- a/a	Thu Jan 01 00:00:00 1970 +0000
   +++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
   @@ -1,1 +0,0 @@
   -b
   
   changeset:   4:3f41bc784e7e
   branch:      a-branch
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     second a
   
   diff -r 292258f86fdf -r 3f41bc784e7e a
   --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
   +++ b/a	Thu Jan 01 00:00:00 1970 +0000
   @@ -0,0 +1,1 @@
   +b
   
   changeset:   3:292258f86fdf
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     del a
   
   diff -r 94c9dd5ca9b4 -r 292258f86fdf a
   --- a/a	Thu Jan 01 00:00:00 1970 +0000
   +++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
   @@ -1,1 +0,0 @@
   -a
   
   changeset:   2:94c9dd5ca9b4
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     Added tag a-tag for changeset 5ed941583260
   
   diff -r 5ed941583260 -r 94c9dd5ca9b4 .hgtags
   --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
   +++ b/.hgtags	Thu Jan 01 00:00:00 1970 +0000
   @@ -0,0 +1,1 @@
   +5ed941583260248620985524192fdc382ef57c36 a-tag
   
   changeset:   1:5ed941583260
   bookmark:    a-bookmark
   tag:         a-tag
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     first a
   
   diff -r 6563da9dcf87 -r 5ed941583260 a
   --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
   +++ b/a	Thu Jan 01 00:00:00 1970 +0000
   @@ -0,0 +1,1 @@
   +a
   
   changeset:   0:6563da9dcf87
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     b
   
   diff -r 000000000000 -r 6563da9dcf87 b
   --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
   +++ b/b	Thu Jan 01 00:00:00 1970 +0000
   @@ -0,0 +1,1 @@
   +b
   
   $ hg serve -n test -p $HGPORT -d --pid-file=hg.pid -E errors.log
   $ cat hg.pid >> $DAEMON_PIDS
 
 tip - two revisions
 
   $ (get-with-headers.py localhost:$HGPORT 'log/tip/a')
   200 Script output follows
   
   <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
   <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US">
   <head>
   <link rel="icon" href="/static/hgicon.png" type="image/png" />
   <meta name="robots" content="index, nofollow" />
   <link rel="stylesheet" href="/static/style-paper.css" type="text/css" />
   <script type="text/javascript" src="/static/mercurial.js"></script>
   
   <title>test: a history</title>
   <link rel="alternate" type="application/atom+xml"
      href="/atom-log/tip/a" title="Atom feed for test:a" />
   <link rel="alternate" type="application/rss+xml"
      href="/rss-log/tip/a" title="RSS feed for test:a" />
   </head>
   <body>
   
   <div class="container">
   <div class="menu">
   <div class="logo">
   <a href="https://mercurial-scm.org/">
   <img src="/static/hglogo.png" alt="mercurial" /></a>
   </div>
   <ul>
   <li><a href="/shortlog/tip">log</a></li>
   <li><a href="/graph/tip">graph</a></li>
   <li><a href="/tags">tags</a></li>
   <li><a href="/bookmarks">bookmarks</a></li>
   <li><a href="/branches">branches</a></li>
   </ul>
   <ul>
   <li><a href="/rev/tip">changeset</a></li>
   <li><a href="/file/tip">browse</a></li>
   </ul>
   <ul>
   <li><a href="/file/tip/a">file</a></li>
   <li><a href="/diff/tip/a">diff</a></li>
   <li><a href="/comparison/tip/a">comparison</a></li>
   <li><a href="/annotate/tip/a">annotate</a></li>
   <li class="active">file log</li>
   <li><a href="/raw-file/tip/a">raw</a></li>
   </ul>
   <ul>
   <li><a href="/help">help</a></li>
   </ul>
   <div class="atom-logo">
   <a href="/atom-log/tip/a" title="subscribe to atom feed">
   <img class="atom-logo" src="/static/feed-icon-14x14.png" alt="atom feed" />
   </a>
   </div>
   </div>
   
   <div class="main">
   <h2 class="breadcrumb"><a href="/">Mercurial</a> </h2>
   <h3>
    log a @ 4:<a href="/rev/3f41bc784e7e">3f41bc784e7e</a>
    <span class="branchname">a-branch</span> 
    
   </h3>
   
   <form class="search" action="/log">
   
   <p><input name="rev" id="search1" type="text" size="30" /></p>
   <div id="hint">Find changesets by keywords (author, files, the commit message), revision
   number or hash, or <a href="/help/revsets">revset expression</a>.</div>
   </form>
   
   <div class="navigate">
   <a href="/log/tip/a?revcount=30">less</a>
   <a href="/log/tip/a?revcount=120">more</a>
   | <a href="/log/5ed941583260/a">(0)</a> <a href="/log/tip/a">tip</a> </div>
   
   <table class="bigtable">
   <thead>
    <tr>
     <th class="age">age</th>
     <th class="author">author</th>
     <th class="description">description</th>
    </tr>
   </thead>
   <tbody class="stripes2">
    <tr>
     <td class="age">Thu, 01 Jan 1970 00:00:00 +0000</td>
     <td class="author">test</td>
     <td class="description">
      <a href="/rev/3f41bc784e7e">second a</a>
      <span class="branchname">a-branch</span> 
     </td>
    </tr>
    
    <tr>
     <td class="age">Thu, 01 Jan 1970 00:00:00 +0000</td>
     <td class="author">test</td>
     <td class="description">
      <a href="/rev/5ed941583260">first a</a>
      <span class="tag">a-tag</span> <span class="tag">a-bookmark</span> 
     </td>
    </tr>
    
   
   </tbody>
   </table>
   
   <div class="navigate">
   <a href="/log/tip/a?revcount=30">less</a>
   <a href="/log/tip/a?revcount=120">more</a>
   | <a href="/log/5ed941583260/a">(0)</a> <a href="/log/tip/a">tip</a> 
   </div>
   
   </div>
   </div>
   
   
   
   </body>
   </html>
   
 
 second version - two revisions
 
   $ (get-with-headers.py localhost:$HGPORT 'log/4/a')
   200 Script output follows
   
   <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
   <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US">
   <head>
   <link rel="icon" href="/static/hgicon.png" type="image/png" />
   <meta name="robots" content="index, nofollow" />
   <link rel="stylesheet" href="/static/style-paper.css" type="text/css" />
   <script type="text/javascript" src="/static/mercurial.js"></script>
   
   <title>test: a history</title>
   <link rel="alternate" type="application/atom+xml"
      href="/atom-log/tip/a" title="Atom feed for test:a" />
   <link rel="alternate" type="application/rss+xml"
      href="/rss-log/tip/a" title="RSS feed for test:a" />
   </head>
   <body>
   
   <div class="container">
   <div class="menu">
   <div class="logo">
   <a href="https://mercurial-scm.org/">
   <img src="/static/hglogo.png" alt="mercurial" /></a>
   </div>
   <ul>
   <li><a href="/shortlog/4">log</a></li>
   <li><a href="/graph/4">graph</a></li>
   <li><a href="/tags">tags</a></li>
   <li><a href="/bookmarks">bookmarks</a></li>
   <li><a href="/branches">branches</a></li>
   </ul>
   <ul>
   <li><a href="/rev/4">changeset</a></li>
   <li><a href="/file/4">browse</a></li>
   </ul>
   <ul>
   <li><a href="/file/4/a">file</a></li>
   <li><a href="/diff/4/a">diff</a></li>
   <li><a href="/comparison/4/a">comparison</a></li>
   <li><a href="/annotate/4/a">annotate</a></li>
   <li class="active">file log</li>
   <li><a href="/raw-file/4/a">raw</a></li>
   </ul>
   <ul>
   <li><a href="/help">help</a></li>
   </ul>
   <div class="atom-logo">
   <a href="/atom-log/tip/a" title="subscribe to atom feed">
   <img class="atom-logo" src="/static/feed-icon-14x14.png" alt="atom feed" />
   </a>
   </div>
   </div>
   
   <div class="main">
   <h2 class="breadcrumb"><a href="/">Mercurial</a> </h2>
   <h3>
    log a @ 4:<a href="/rev/3f41bc784e7e">3f41bc784e7e</a>
    <span class="branchname">a-branch</span> 
    
   </h3>
   
   <form class="search" action="/log">
   
   <p><input name="rev" id="search1" type="text" size="30" /></p>
   <div id="hint">Find changesets by keywords (author, files, the commit message), revision
   number or hash, or <a href="/help/revsets">revset expression</a>.</div>
   </form>
   
   <div class="navigate">
   <a href="/log/4/a?revcount=30">less</a>
   <a href="/log/4/a?revcount=120">more</a>
   | <a href="/log/5ed941583260/a">(0)</a> <a href="/log/tip/a">tip</a> </div>
   
   <table class="bigtable">
   <thead>
    <tr>
     <th class="age">age</th>
     <th class="author">author</th>
     <th class="description">description</th>
    </tr>
   </thead>
   <tbody class="stripes2">
    <tr>
     <td class="age">Thu, 01 Jan 1970 00:00:00 +0000</td>
     <td class="author">test</td>
     <td class="description">
      <a href="/rev/3f41bc784e7e">second a</a>
      <span class="branchname">a-branch</span> 
     </td>
    </tr>
    
    <tr>
     <td class="age">Thu, 01 Jan 1970 00:00:00 +0000</td>
     <td class="author">test</td>
     <td class="description">
      <a href="/rev/5ed941583260">first a</a>
      <span class="tag">a-tag</span> <span class="tag">a-bookmark</span> 
     </td>
    </tr>
    
   
   </tbody>
   </table>
   
   <div class="navigate">
   <a href="/log/4/a?revcount=30">less</a>
   <a href="/log/4/a?revcount=120">more</a>
   | <a href="/log/5ed941583260/a">(0)</a> <a href="/log/tip/a">tip</a> 
   </div>
   
   </div>
   </div>
   
   
   
   </body>
   </html>
   
 
 first deleted - one revision
 
   $ (get-with-headers.py localhost:$HGPORT 'log/3/a')
   200 Script output follows
   
   <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
   <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US">
   <head>
   <link rel="icon" href="/static/hgicon.png" type="image/png" />
   <meta name="robots" content="index, nofollow" />
   <link rel="stylesheet" href="/static/style-paper.css" type="text/css" />
   <script type="text/javascript" src="/static/mercurial.js"></script>
   
   <title>test: a history</title>
   <link rel="alternate" type="application/atom+xml"
      href="/atom-log/tip/a" title="Atom feed for test:a" />
   <link rel="alternate" type="application/rss+xml"
      href="/rss-log/tip/a" title="RSS feed for test:a" />
   </head>
   <body>
   
   <div class="container">
   <div class="menu">
   <div class="logo">
   <a href="https://mercurial-scm.org/">
   <img src="/static/hglogo.png" alt="mercurial" /></a>
   </div>
   <ul>
   <li><a href="/shortlog/3">log</a></li>
   <li><a href="/graph/3">graph</a></li>
   <li><a href="/tags">tags</a></li>
   <li><a href="/bookmarks">bookmarks</a></li>
   <li><a href="/branches">branches</a></li>
   </ul>
   <ul>
   <li><a href="/rev/3">changeset</a></li>
   <li><a href="/file/3">browse</a></li>
   </ul>
   <ul>
   <li><a href="/file/3/a">file</a></li>
   <li><a href="/diff/3/a">diff</a></li>
   <li><a href="/comparison/3/a">comparison</a></li>
   <li><a href="/annotate/3/a">annotate</a></li>
   <li class="active">file log</li>
   <li><a href="/raw-file/3/a">raw</a></li>
   </ul>
   <ul>
   <li><a href="/help">help</a></li>
   </ul>
   <div class="atom-logo">
   <a href="/atom-log/tip/a" title="subscribe to atom feed">
   <img class="atom-logo" src="/static/feed-icon-14x14.png" alt="atom feed" />
   </a>
   </div>
   </div>
   
   <div class="main">
   <h2 class="breadcrumb"><a href="/">Mercurial</a> </h2>
   <h3>
    log a @ 1:<a href="/rev/5ed941583260">5ed941583260</a>
    <span class="tag">a-tag</span> <span class="tag">a-bookmark</span> 
    
   </h3>
   
   <form class="search" action="/log">
   
   <p><input name="rev" id="search1" type="text" size="30" /></p>
   <div id="hint">Find changesets by keywords (author, files, the commit message), revision
   number or hash, or <a href="/help/revsets">revset expression</a>.</div>
   </form>
   
   <div class="navigate">
   <a href="/log/3/a?revcount=30">less</a>
   <a href="/log/3/a?revcount=120">more</a>
   | <a href="/log/5ed941583260/a">(0)</a> <a href="/log/tip/a">tip</a> </div>
   
   <table class="bigtable">
   <thead>
    <tr>
     <th class="age">age</th>
     <th class="author">author</th>
     <th class="description">description</th>
    </tr>
   </thead>
   <tbody class="stripes2">
    <tr>
     <td class="age">Thu, 01 Jan 1970 00:00:00 +0000</td>
     <td class="author">test</td>
     <td class="description">
      <a href="/rev/5ed941583260">first a</a>
      <span class="tag">a-tag</span> <span class="tag">a-bookmark</span> 
     </td>
    </tr>
    
   
   </tbody>
   </table>
   
   <div class="navigate">
   <a href="/log/3/a?revcount=30">less</a>
   <a href="/log/3/a?revcount=120">more</a>
   | <a href="/log/5ed941583260/a">(0)</a> <a href="/log/tip/a">tip</a> 
   </div>
   
   </div>
   </div>
   
   
   
   </body>
   </html>
   
 
 first version - one revision
 
   $ (get-with-headers.py localhost:$HGPORT 'log/1/a')
   200 Script output follows
   
   <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
   <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US">
   <head>
   <link rel="icon" href="/static/hgicon.png" type="image/png" />
   <meta name="robots" content="index, nofollow" />
   <link rel="stylesheet" href="/static/style-paper.css" type="text/css" />
   <script type="text/javascript" src="/static/mercurial.js"></script>
   
   <title>test: a history</title>
   <link rel="alternate" type="application/atom+xml"
      href="/atom-log/tip/a" title="Atom feed for test:a" />
   <link rel="alternate" type="application/rss+xml"
      href="/rss-log/tip/a" title="RSS feed for test:a" />
   </head>
   <body>
   
   <div class="container">
   <div class="menu">
   <div class="logo">
   <a href="https://mercurial-scm.org/">
   <img src="/static/hglogo.png" alt="mercurial" /></a>
   </div>
   <ul>
   <li><a href="/shortlog/1">log</a></li>
   <li><a href="/graph/1">graph</a></li>
   <li><a href="/tags">tags</a></li>
   <li><a href="/bookmarks">bookmarks</a></li>
   <li><a href="/branches">branches</a></li>
   </ul>
   <ul>
   <li><a href="/rev/1">changeset</a></li>
   <li><a href="/file/1">browse</a></li>
   </ul>
   <ul>
   <li><a href="/file/1/a">file</a></li>
   <li><a href="/diff/1/a">diff</a></li>
   <li><a href="/comparison/1/a">comparison</a></li>
   <li><a href="/annotate/1/a">annotate</a></li>
   <li class="active">file log</li>
   <li><a href="/raw-file/1/a">raw</a></li>
   </ul>
   <ul>
   <li><a href="/help">help</a></li>
   </ul>
   <div class="atom-logo">
   <a href="/atom-log/tip/a" title="subscribe to atom feed">
   <img class="atom-logo" src="/static/feed-icon-14x14.png" alt="atom feed" />
   </a>
   </div>
   </div>
   
   <div class="main">
   <h2 class="breadcrumb"><a href="/">Mercurial</a> </h2>
   <h3>
    log a @ 1:<a href="/rev/5ed941583260">5ed941583260</a>
    <span class="tag">a-tag</span> <span class="tag">a-bookmark</span> 
    
   </h3>
   
   <form class="search" action="/log">
   
   <p><input name="rev" id="search1" type="text" size="30" /></p>
   <div id="hint">Find changesets by keywords (author, files, the commit message), revision
   number or hash, or <a href="/help/revsets">revset expression</a>.</div>
   </form>
   
   <div class="navigate">
   <a href="/log/1/a?revcount=30">less</a>
   <a href="/log/1/a?revcount=120">more</a>
   | <a href="/log/5ed941583260/a">(0)</a> <a href="/log/tip/a">tip</a> </div>
   
   <table class="bigtable">
   <thead>
    <tr>
     <th class="age">age</th>
     <th class="author">author</th>
     <th class="description">description</th>
    </tr>
   </thead>
   <tbody class="stripes2">
    <tr>
     <td class="age">Thu, 01 Jan 1970 00:00:00 +0000</td>
     <td class="author">test</td>
     <td class="description">
      <a href="/rev/5ed941583260">first a</a>
      <span class="tag">a-tag</span> <span class="tag">a-bookmark</span> 
     </td>
    </tr>
    
   
   </tbody>
   </table>
   
   <div class="navigate">
   <a href="/log/1/a?revcount=30">less</a>
   <a href="/log/1/a?revcount=120">more</a>
   | <a href="/log/5ed941583260/a">(0)</a> <a href="/log/tip/a">tip</a> 
   </div>
   
   </div>
   </div>
   
   
   
   </body>
   </html>
   
 
 before addition - error
 
   $ (get-with-headers.py localhost:$HGPORT 'log/0/a')
   404 Not Found
   
   <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
   <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US">
   <head>
   <link rel="icon" href="/static/hgicon.png" type="image/png" />
   <meta name="robots" content="index, nofollow" />
   <link rel="stylesheet" href="/static/style-paper.css" type="text/css" />
   <script type="text/javascript" src="/static/mercurial.js"></script>
   
   <title>test: error</title>
   </head>
   <body>
   
   <div class="container">
   <div class="menu">
   <div class="logo">
   <a href="https://mercurial-scm.org/">
   <img src="/static/hglogo.png" width=75 height=90 border=0 alt="mercurial" /></a>
   </div>
   <ul>
   <li><a href="/shortlog">log</a></li>
   <li><a href="/graph">graph</a></li>
   <li><a href="/tags">tags</a></li>
   <li><a href="/bookmarks">bookmarks</a></li>
   <li><a href="/branches">branches</a></li>
   </ul>
   <ul>
   <li><a href="/help">help</a></li>
   </ul>
   </div>
   
   <div class="main">
   
   <h2 class="breadcrumb"><a href="/">Mercurial</a> </h2>
   <h3>error</h3>
   
   <form class="search" action="/log">
   
   <p><input name="rev" id="search1" type="text" size="30"></p>
   <div id="hint">Find changesets by keywords (author, files, the commit message), revision
   number or hash, or <a href="/help/revsets">revset expression</a>.</div>
   </form>
   
   <div class="description">
   <p>
   An error occurred while processing your request:
   </p>
   <p>
   a@6563da9dcf87: not found in manifest
   </p>
   </div>
   </div>
   </div>
   
   
   
   </body>
   </html>
   
   [1]
 
   $ hg log -r 'followlines(c, 1:2, startrev=tip) and follow(c)'
   changeset:   0:6563da9dcf87
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     b
   
   changeset:   7:46c1a66bd8fc
   branch:      a-branch
   tag:         tip
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     change c
   
   $ (get-with-headers.py localhost:$HGPORT 'log/tip/c?linerange=1:2')
   200 Script output follows
   
   <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
   <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US">
   <head>
   <link rel="icon" href="/static/hgicon.png" type="image/png" />
   <meta name="robots" content="index, nofollow" />
   <link rel="stylesheet" href="/static/style-paper.css" type="text/css" />
   <script type="text/javascript" src="/static/mercurial.js"></script>
   
   <title>test: c history</title>
   <link rel="alternate" type="application/atom+xml"
      href="/atom-log/tip/c" title="Atom feed for test:c" />
   <link rel="alternate" type="application/rss+xml"
      href="/rss-log/tip/c" title="RSS feed for test:c" />
   </head>
   <body>
   
   <div class="container">
   <div class="menu">
   <div class="logo">
   <a href="https://mercurial-scm.org/">
   <img src="/static/hglogo.png" alt="mercurial" /></a>
   </div>
   <ul>
   <li><a href="/shortlog/tip">log</a></li>
   <li><a href="/graph/tip">graph</a></li>
   <li><a href="/tags">tags</a></li>
   <li><a href="/bookmarks">bookmarks</a></li>
   <li><a href="/branches">branches</a></li>
   </ul>
   <ul>
   <li><a href="/rev/tip">changeset</a></li>
   <li><a href="/file/tip">browse</a></li>
   </ul>
   <ul>
   <li><a href="/file/tip/c">file</a></li>
   <li><a href="/diff/tip/c">diff</a></li>
   <li><a href="/comparison/tip/c">comparison</a></li>
   <li><a href="/annotate/tip/c">annotate</a></li>
   <li class="active">file log</li>
   <li><a href="/raw-file/tip/c">raw</a></li>
   </ul>
   <ul>
   <li><a href="/help">help</a></li>
   </ul>
   <div class="atom-logo">
   <a href="/atom-log/tip/c" title="subscribe to atom feed">
   <img class="atom-logo" src="/static/feed-icon-14x14.png" alt="atom feed" />
   </a>
   </div>
   </div>
   
   <div class="main">
   <h2 class="breadcrumb"><a href="/">Mercurial</a> </h2>
   <h3>
    log c @ 7:<a href="/rev/46c1a66bd8fc">46c1a66bd8fc</a>
    <span class="branchname">a-branch</span> <span class="tag">tip</span> 
     (following lines 1:2 <a href="/log/tip/c">back to filelog</a>)
   </h3>
   
   <form class="search" action="/log">
   
   <p><input name="rev" id="search1" type="text" size="30" /></p>
   <div id="hint">Find changesets by keywords (author, files, the commit message), revision
   number or hash, or <a href="/help/revsets">revset expression</a>.</div>
   </form>
   
   <div class="navigate">
   <a href="/log/tip/c?linerange=1%3A2&revcount=30">less</a>
   <a href="/log/tip/c?linerange=1%3A2&revcount=120">more</a>
   |  </div>
   
   <table class="bigtable">
   <thead>
    <tr>
     <th class="age">age</th>
     <th class="author">author</th>
     <th class="description">description</th>
    </tr>
   </thead>
   <tbody class="stripes2">
    <tr>
     <td class="age">Thu, 01 Jan 1970 00:00:00 +0000</td>
     <td class="author">test</td>
     <td class="description">
      <a href="/rev/46c1a66bd8fc">change c</a>
      <span class="branchhead">a-branch</span> <span class="tag">tip</span> 
     </td>
    </tr>
    
    <tr>
     <td class="age">Thu, 01 Jan 1970 00:00:00 +0000</td>
     <td class="author">test</td>
     <td class="description">
      <a href="/rev/6563da9dcf87">b</a>
      
     </td>
    </tr>
    
   
   </tbody>
   </table>
   
   <div class="navigate">
   <a href="/log/tip/c?linerange=1%3A2&revcount=30">less</a>
   <a href="/log/tip/c?linerange=1%3A2&revcount=120">more</a>
   |  
   </div>
   
   </div>
   </div>
   
   
   
   </body>
   </html>
   
   $ (get-with-headers.py localhost:$HGPORT 'log/tip/c?linerange=1%3A2&revcount=1')
   200 Script output follows
   
   <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
   <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US">
   <head>
   <link rel="icon" href="/static/hgicon.png" type="image/png" />
   <meta name="robots" content="index, nofollow" />
   <link rel="stylesheet" href="/static/style-paper.css" type="text/css" />
   <script type="text/javascript" src="/static/mercurial.js"></script>
   
   <title>test: c history</title>
   <link rel="alternate" type="application/atom+xml"
      href="/atom-log/tip/c" title="Atom feed for test:c" />
   <link rel="alternate" type="application/rss+xml"
      href="/rss-log/tip/c" title="RSS feed for test:c" />
   </head>
   <body>
   
   <div class="container">
   <div class="menu">
   <div class="logo">
   <a href="https://mercurial-scm.org/">
   <img src="/static/hglogo.png" alt="mercurial" /></a>
   </div>
   <ul>
   <li><a href="/shortlog/tip?revcount=1">log</a></li>
   <li><a href="/graph/tip?revcount=1">graph</a></li>
   <li><a href="/tags?revcount=1">tags</a></li>
   <li><a href="/bookmarks?revcount=1">bookmarks</a></li>
   <li><a href="/branches?revcount=1">branches</a></li>
   </ul>
   <ul>
   <li><a href="/rev/tip?revcount=1">changeset</a></li>
   <li><a href="/file/tip?revcount=1">browse</a></li>
   </ul>
   <ul>
   <li><a href="/file/tip/c?revcount=1">file</a></li>
   <li><a href="/diff/tip/c?revcount=1">diff</a></li>
   <li><a href="/comparison/tip/c?revcount=1">comparison</a></li>
   <li><a href="/annotate/tip/c?revcount=1">annotate</a></li>
   <li class="active">file log</li>
   <li><a href="/raw-file/tip/c">raw</a></li>
   </ul>
   <ul>
   <li><a href="/help?revcount=1">help</a></li>
   </ul>
   <div class="atom-logo">
   <a href="/atom-log/tip/c" title="subscribe to atom feed">
   <img class="atom-logo" src="/static/feed-icon-14x14.png" alt="atom feed" />
   </a>
   </div>
   </div>
   
   <div class="main">
   <h2 class="breadcrumb"><a href="/">Mercurial</a> </h2>
   <h3>
    log c @ 7:<a href="/rev/46c1a66bd8fc?revcount=1">46c1a66bd8fc</a>
    <span class="branchname">a-branch</span> <span class="tag">tip</span> 
     (following lines 1:2 <a href="/log/tip/c?revcount=1">back to filelog</a>)
   </h3>
   
   <form class="search" action="/log">
   <input type="hidden" name="revcount" value="1" />
   <p><input name="rev" id="search1" type="text" size="30" /></p>
   <div id="hint">Find changesets by keywords (author, files, the commit message), revision
   number or hash, or <a href="/help/revsets">revset expression</a>.</div>
   </form>
   
   <div class="navigate">
   <a href="/log/tip/c?linerange=1%3A2&revcount=1">less</a>
   <a href="/log/tip/c?linerange=1%3A2&revcount=2">more</a>
   |  </div>
   
   <table class="bigtable">
   <thead>
    <tr>
     <th class="age">age</th>
     <th class="author">author</th>
     <th class="description">description</th>
    </tr>
   </thead>
   <tbody class="stripes2">
    <tr>
     <td class="age">Thu, 01 Jan 1970 00:00:00 +0000</td>
     <td class="author">test</td>
     <td class="description">
      <a href="/rev/46c1a66bd8fc?revcount=1">change c</a>
      <span class="branchhead">a-branch</span> <span class="tag">tip</span> 
     </td>
    </tr>
    
   
   </tbody>
   </table>
   
   <div class="navigate">
   <a href="/log/tip/c?linerange=1%3A2&revcount=1">less</a>
   <a href="/log/tip/c?linerange=1%3A2&revcount=2">more</a>
   |  
   </div>
   
   </div>
   </div>
   
   
   
   </body>
   </html>
   
   $ (get-with-headers.py localhost:$HGPORT 'log/3/a?linerange=1' --headeronly)
   400 invalid linerange parameter
   [1]
   $ (get-with-headers.py localhost:$HGPORT 'log/3/a?linerange=1:a' --headeronly)
   400 invalid linerange parameter
   [1]
   $ (get-with-headers.py localhost:$HGPORT 'log/3/a?linerange=1:2&linerange=3:4' --headeronly)
   400 redundant linerange parameter
   [1]
   $ (get-with-headers.py localhost:$HGPORT 'log/3/a?linerange=3:2' --headeronly)
   400 line range must be positive
   [1]
   $ (get-with-headers.py localhost:$HGPORT 'log/3/a?linerange=0:1' --headeronly)
   400 fromline must be strictly positive
   [1]
 
 should show base link, use spartan because it shows it
 
   $ (get-with-headers.py localhost:$HGPORT 'log/tip/c?style=spartan')
   200 Script output follows
   
   <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
   <html>
   <head>
   <link rel="icon" href="/static/hgicon.png" type="image/png">
   <meta name="robots" content="index, nofollow" />
   <link rel="stylesheet" href="/static/style.css" type="text/css" />
   <script type="text/javascript" src="/static/mercurial.js"></script>
   
   <title>test: c history</title>
   <link rel="alternate" type="application/atom+xml"
      href="/atom-log/tip/c" title="Atom feed for test:c">
   <link rel="alternate" type="application/rss+xml"
      href="/rss-log/tip/c" title="RSS feed for test:c">
   </head>
   <body>
   
   <div class="buttons">
   <a href="/log?style=spartan">changelog</a>
   <a href="/shortlog?style=spartan">shortlog</a>
   <a href="/graph?style=spartan">graph</a>
   <a href="/tags?style=spartan">tags</a>
   <a href="/branches?style=spartan">branches</a>
   <a href="/file/tip/c?style=spartan">file</a>
   <a href="/annotate/tip/c?style=spartan">annotate</a>
   <a href="/help?style=spartan">help</a>
   <a type="application/rss+xml" href="/rss-log/tip/c">rss</a>
   <a type="application/atom+xml" href="/atom-log/tip/c" title="Atom feed for test:c">atom</a>
   </div>
   
   <h2><a href="/">Mercurial</a>  / c revision history</h2>
   
   <p>navigate: <small class="navigate"><a href="/log/c9637d3cc8ef/c?style=spartan">(0)</a> <a href="/log/tip/c?style=spartan">tip</a> </small></p>
   
   <table class="logEntry parity0">
    <tr>
     <th class="label"><span class="age">Thu, 01 Jan 1970 00:00:00 +0000</span>:</th>
     <th class="firstline"><a href="/rev/46c1a66bd8fc?style=spartan">change c</a></th>
    </tr>
    <tr>
     <th class="revision">revision 1:</th>
     <td class="node">
      <a href="/file/46c1a66bd8fc/c?style=spartan">46c1a66bd8fc</a>
      <a href="/diff/46c1a66bd8fc/c?style=spartan">(diff)</a>
      <a href="/annotate/46c1a66bd8fc/c?style=spartan">(annotate)</a>
     </td>
    </tr>
    
    <tr>
     <th class="author">author:</th>
     <td class="author">&#116;&#101;&#115;&#116;</td>
    </tr>
    <tr>
     <th class="date">date:</th>
     <td class="date">Thu, 01 Jan 1970 00:00:00 +0000</td>
    </tr>
   </table>
   
   
   <table class="logEntry parity1">
    <tr>
     <th class="label"><span class="age">Thu, 01 Jan 1970 00:00:00 +0000</span>:</th>
     <th class="firstline"><a href="/rev/c9637d3cc8ef?style=spartan">mv b</a></th>
    </tr>
    <tr>
     <th class="revision">revision 0:</th>
     <td class="node">
      <a href="/file/c9637d3cc8ef/c?style=spartan">c9637d3cc8ef</a>
      <a href="/diff/c9637d3cc8ef/c?style=spartan">(diff)</a>
      <a href="/annotate/c9637d3cc8ef/c?style=spartan">(annotate)</a>
     </td>
    </tr>
    
   <tr>
   <th>base:</th>
   <td>
   <a href="/file/1e88685f5dde/b?style=spartan">
   b@1e88685f5dde
   </a>
   </td>
   </tr>
    <tr>
     <th class="author">author:</th>
     <td class="author">&#116;&#101;&#115;&#116;</td>
    </tr>
    <tr>
     <th class="date">date:</th>
     <td class="date">Thu, 01 Jan 1970 00:00:00 +0000</td>
    </tr>
   </table>
   
   
   
   
   
   <div class="logo">
   <a href="https://mercurial-scm.org/">
   <img src="/static/hglogo.png" width=75 height=90 border=0 alt="mercurial"></a>
   </div>
   
   </body>
   </html>
   
 
 filelog with patch
 
   $ (get-with-headers.py localhost:$HGPORT 'log/4/a?patch=1')
   200 Script output follows
   
   <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
   <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US">
   <head>
   <link rel="icon" href="/static/hgicon.png" type="image/png" />
   <meta name="robots" content="index, nofollow" />
   <link rel="stylesheet" href="/static/style-paper.css" type="text/css" />
   <script type="text/javascript" src="/static/mercurial.js"></script>
   
   <title>test: a history</title>
   <link rel="alternate" type="application/atom+xml"
      href="/atom-log/tip/a" title="Atom feed for test:a" />
   <link rel="alternate" type="application/rss+xml"
      href="/rss-log/tip/a" title="RSS feed for test:a" />
   </head>
   <body>
   
   <div class="container">
   <div class="menu">
   <div class="logo">
   <a href="https://mercurial-scm.org/">
   <img src="/static/hglogo.png" alt="mercurial" /></a>
   </div>
   <ul>
   <li><a href="/shortlog/4">log</a></li>
   <li><a href="/graph/4">graph</a></li>
   <li><a href="/tags">tags</a></li>
   <li><a href="/bookmarks">bookmarks</a></li>
   <li><a href="/branches">branches</a></li>
   </ul>
   <ul>
   <li><a href="/rev/4">changeset</a></li>
   <li><a href="/file/4">browse</a></li>
   </ul>
   <ul>
   <li><a href="/file/4/a">file</a></li>
   <li><a href="/diff/4/a">diff</a></li>
   <li><a href="/comparison/4/a">comparison</a></li>
   <li><a href="/annotate/4/a">annotate</a></li>
   <li class="active">file log</li>
   <li><a href="/raw-file/4/a">raw</a></li>
   </ul>
   <ul>
   <li><a href="/help">help</a></li>
   </ul>
   <div class="atom-logo">
   <a href="/atom-log/tip/a" title="subscribe to atom feed">
   <img class="atom-logo" src="/static/feed-icon-14x14.png" alt="atom feed" />
   </a>
   </div>
   </div>
   
   <div class="main">
   <h2 class="breadcrumb"><a href="/">Mercurial</a> </h2>
   <h3>
    log a @ 4:<a href="/rev/3f41bc784e7e">3f41bc784e7e</a>
    <span class="branchname">a-branch</span> 
    
   </h3>
   
   <form class="search" action="/log">
   
   <p><input name="rev" id="search1" type="text" size="30" /></p>
   <div id="hint">Find changesets by keywords (author, files, the commit message), revision
   number or hash, or <a href="/help/revsets">revset expression</a>.</div>
   </form>
   
   <div class="navigate">
   <a href="/log/4/a?patch=1&revcount=30">less</a>
   <a href="/log/4/a?patch=1&revcount=120">more</a>
   | <a href="/log/5ed941583260/a">(0)</a> <a href="/log/tip/a">tip</a> </div>
   
   <table class="bigtable">
   <thead>
    <tr>
     <th class="age">age</th>
     <th class="author">author</th>
     <th class="description">description</th>
    </tr>
   </thead>
   <tbody class="stripes2">
    <tr>
     <td class="age">Thu, 01 Jan 1970 00:00:00 +0000</td>
     <td class="author">test</td>
     <td class="description">
      <a href="/rev/3f41bc784e7e">second a</a>
      <span class="branchname">a-branch</span> 
     </td>
    </tr>
    <tr><td colspan="3"><div class="bottomline inc-lineno"><pre class="sourcelines wrap">
   <span id="3f41bc784e7e-l1.1" class="minusline">--- /dev/null	Thu Jan 01 00:00:00 1970 +0000</span><a href="#3f41bc784e7e-l1.1"></a>
   <span id="3f41bc784e7e-l1.2" class="plusline">+++ b/a	Thu Jan 01 00:00:00 1970 +0000</span><a href="#3f41bc784e7e-l1.2"></a>
   <span id="3f41bc784e7e-l1.3" class="atline">@@ -0,0 +1,1 @@</span><a href="#3f41bc784e7e-l1.3"></a>
   <span id="3f41bc784e7e-l1.4" class="plusline">+b</span><a href="#3f41bc784e7e-l1.4"></a></pre></div></td></tr>
    <tr>
     <td class="age">Thu, 01 Jan 1970 00:00:00 +0000</td>
     <td class="author">test</td>
     <td class="description">
      <a href="/rev/5ed941583260">first a</a>
      <span class="tag">a-tag</span> <span class="tag">a-bookmark</span> 
     </td>
    </tr>
    <tr><td colspan="3"><div class="bottomline inc-lineno"><pre class="sourcelines wrap">
   <span id="5ed941583260-l1.1" class="minusline">--- /dev/null	Thu Jan 01 00:00:00 1970 +0000</span><a href="#5ed941583260-l1.1"></a>
   <span id="5ed941583260-l1.2" class="plusline">+++ b/a	Thu Jan 01 00:00:00 1970 +0000</span><a href="#5ed941583260-l1.2"></a>
   <span id="5ed941583260-l1.3" class="atline">@@ -0,0 +1,1 @@</span><a href="#5ed941583260-l1.3"></a>
   <span id="5ed941583260-l1.4" class="plusline">+a</span><a href="#5ed941583260-l1.4"></a></pre></div></td></tr>
   
   </tbody>
   </table>
   
   <div class="navigate">
   <a href="/log/4/a?patch=1&revcount=30">less</a>
   <a href="/log/4/a?patch=1&revcount=120">more</a>
   | <a href="/log/5ed941583260/a">(0)</a> <a href="/log/tip/a">tip</a> 
   </div>
   
   </div>
   </div>
   
   
   
   </body>
   </html>
   
 filelog with 'linerange' and 'patch'
 
   $ cat c
   b
   c
   $ cat <<EOF > c
   > 0
   > 0
   > b
   > c+
   > 
   > a
   > a
   > 
   > d
   > e
   > f
   > EOF
   $ hg ci -m 'make c bigger and touch its beginning' c
   $ cat <<EOF > c
   > 0
   > 0
   > b
   > c+
   > 
   > a
   > a
   > 
   > d
   > e+
   > f
   > EOF
   $ hg ci -m 'just touch end of c' c
   $ cat <<EOF > c
   > 0
   > 0
   > b
   > c++
   > 
   > a
   > a
   > 
   > d
   > e+
   > f
   > EOF
   $ hg ci -m 'touch beginning of c' c
   $ cat <<EOF > c
   > 0
   > 0
   > b-
   > c++
   > 
   > a
   > a
   > 
   > d
   > e+
   > f+
   > EOF
   $ hg ci -m 'touching beginning and end of c' c
   $ hg log -r 'followlines(c, 3:4, startrev=tip) and follow(c)' -p
   changeset:   0:6563da9dcf87
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     b
   
   diff -r 000000000000 -r 6563da9dcf87 b
   --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
   +++ b/b	Thu Jan 01 00:00:00 1970 +0000
   @@ -0,0 +1,1 @@
   +b
   
   changeset:   7:46c1a66bd8fc
   branch:      a-branch
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     change c
   
   diff -r c9637d3cc8ef -r 46c1a66bd8fc c
   --- a/c	Thu Jan 01 00:00:00 1970 +0000
   +++ b/c	Thu Jan 01 00:00:00 1970 +0000
   @@ -1,1 +1,2 @@
    b
   +c
   
   changeset:   8:5c6574614c37
   branch:      a-branch
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     make c bigger and touch its beginning
   
   diff -r 46c1a66bd8fc -r 5c6574614c37 c
   --- a/c	Thu Jan 01 00:00:00 1970 +0000
   +++ b/c	Thu Jan 01 00:00:00 1970 +0000
   @@ -1,2 +1,11 @@
   +0
   +0
    b
   -c
   +c+
   +
   +a
   +a
   +
   +d
   +e
   +f
   
   changeset:   10:e95928d60479
   branch:      a-branch
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     touch beginning of c
   
   diff -r e1d3e9c5a23f -r e95928d60479 c
   --- a/c	Thu Jan 01 00:00:00 1970 +0000
   +++ b/c	Thu Jan 01 00:00:00 1970 +0000
   @@ -1,7 +1,7 @@
    0
    0
    b
   -c+
   +c++
    
    a
    a
   
   changeset:   11:fb9bc322513a
   branch:      a-branch
   tag:         tip
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     touching beginning and end of c
   
   diff -r e95928d60479 -r fb9bc322513a c
   --- a/c	Thu Jan 01 00:00:00 1970 +0000
   +++ b/c	Thu Jan 01 00:00:00 1970 +0000
   @@ -1,6 +1,6 @@
    0
    0
   -b
   +b-
    c++
    
    a
   @@ -8,4 +8,4 @@
    
    d
    e+
   -f
   +f+
   
   $ (get-with-headers.py localhost:$HGPORT 'log/tip/c?linerange=3:4&patch=')
   200 Script output follows
   
   <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
   <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US">
   <head>
   <link rel="icon" href="/static/hgicon.png" type="image/png" />
   <meta name="robots" content="index, nofollow" />
   <link rel="stylesheet" href="/static/style-paper.css" type="text/css" />
   <script type="text/javascript" src="/static/mercurial.js"></script>
   
   <title>test: c history</title>
   <link rel="alternate" type="application/atom+xml"
      href="/atom-log/tip/c" title="Atom feed for test:c" />
   <link rel="alternate" type="application/rss+xml"
      href="/rss-log/tip/c" title="RSS feed for test:c" />
   </head>
   <body>
   
   <div class="container">
   <div class="menu">
   <div class="logo">
   <a href="https://mercurial-scm.org/">
   <img src="/static/hglogo.png" alt="mercurial" /></a>
   </div>
   <ul>
   <li><a href="/shortlog/tip">log</a></li>
   <li><a href="/graph/tip">graph</a></li>
   <li><a href="/tags">tags</a></li>
   <li><a href="/bookmarks">bookmarks</a></li>
   <li><a href="/branches">branches</a></li>
   </ul>
   <ul>
   <li><a href="/rev/tip">changeset</a></li>
   <li><a href="/file/tip">browse</a></li>
   </ul>
   <ul>
   <li><a href="/file/tip/c">file</a></li>
   <li><a href="/diff/tip/c">diff</a></li>
   <li><a href="/comparison/tip/c">comparison</a></li>
   <li><a href="/annotate/tip/c">annotate</a></li>
   <li class="active">file log</li>
   <li><a href="/raw-file/tip/c">raw</a></li>
   </ul>
   <ul>
   <li><a href="/help">help</a></li>
   </ul>
   <div class="atom-logo">
   <a href="/atom-log/tip/c" title="subscribe to atom feed">
   <img class="atom-logo" src="/static/feed-icon-14x14.png" alt="atom feed" />
   </a>
   </div>
   </div>
   
   <div class="main">
   <h2 class="breadcrumb"><a href="/">Mercurial</a> </h2>
   <h3>
    log c @ 11:<a href="/rev/fb9bc322513a">fb9bc322513a</a>
    <span class="branchname">a-branch</span> <span class="tag">tip</span> 
     (following lines 3:4 <a href="/log/tip/c">back to filelog</a>)
   </h3>
   
   <form class="search" action="/log">
   
   <p><input name="rev" id="search1" type="text" size="30" /></p>
   <div id="hint">Find changesets by keywords (author, files, the commit message), revision
   number or hash, or <a href="/help/revsets">revset expression</a>.</div>
   </form>
   
   <div class="navigate">
   <a href="/log/tip/c?linerange=3%3A4&patch=&revcount=30">less</a>
   <a href="/log/tip/c?linerange=3%3A4&patch=&revcount=120">more</a>
   |  </div>
   
   <table class="bigtable">
   <thead>
    <tr>
     <th class="age">age</th>
     <th class="author">author</th>
     <th class="description">description</th>
    </tr>
   </thead>
   <tbody class="stripes2">
    <tr>
     <td class="age">Thu, 01 Jan 1970 00:00:00 +0000</td>
     <td class="author">test</td>
     <td class="description">
      <a href="/rev/fb9bc322513a">touching beginning and end of c</a>
      <span class="branchhead">a-branch</span> <span class="tag">tip</span> 
     </td>
    </tr>
    <tr><td colspan="3"><div class="bottomline inc-lineno"><pre class="sourcelines wrap">
   <span id="fb9bc322513a-l1.1" class="minusline">--- a/c	Thu Jan 01 00:00:00 1970 +0000</span><a href="#fb9bc322513a-l1.1"></a>
   <span id="fb9bc322513a-l1.2" class="plusline">+++ b/c	Thu Jan 01 00:00:00 1970 +0000</span><a href="#fb9bc322513a-l1.2"></a>
   <span id="fb9bc322513a-l1.3" class="atline">@@ -1,6 +1,6 @@</span><a href="#fb9bc322513a-l1.3"></a>
   <span id="fb9bc322513a-l1.4"> 0</span><a href="#fb9bc322513a-l1.4"></a>
   <span id="fb9bc322513a-l1.5"> 0</span><a href="#fb9bc322513a-l1.5"></a>
   <span id="fb9bc322513a-l1.6" class="minusline">-b</span><a href="#fb9bc322513a-l1.6"></a>
   <span id="fb9bc322513a-l1.7" class="plusline">+b-</span><a href="#fb9bc322513a-l1.7"></a>
   <span id="fb9bc322513a-l1.8"> c++</span><a href="#fb9bc322513a-l1.8"></a>
   <span id="fb9bc322513a-l1.9"> </span><a href="#fb9bc322513a-l1.9"></a>
   <span id="fb9bc322513a-l1.10"> a</span><a href="#fb9bc322513a-l1.10"></a></pre></div></td></tr>
    <tr>
     <td class="age">Thu, 01 Jan 1970 00:00:00 +0000</td>
     <td class="author">test</td>
     <td class="description">
      <a href="/rev/e95928d60479">touch beginning of c</a>
      <span class="branchname">a-branch</span> 
     </td>
    </tr>
    <tr><td colspan="3"><div class="bottomline inc-lineno"><pre class="sourcelines wrap">
   <span id="e95928d60479-l1.1" class="minusline">--- a/c	Thu Jan 01 00:00:00 1970 +0000</span><a href="#e95928d60479-l1.1"></a>
   <span id="e95928d60479-l1.2" class="plusline">+++ b/c	Thu Jan 01 00:00:00 1970 +0000</span><a href="#e95928d60479-l1.2"></a>
   <span id="e95928d60479-l1.3" class="atline">@@ -1,7 +1,7 @@</span><a href="#e95928d60479-l1.3"></a>
   <span id="e95928d60479-l1.4"> 0</span><a href="#e95928d60479-l1.4"></a>
   <span id="e95928d60479-l1.5"> 0</span><a href="#e95928d60479-l1.5"></a>
   <span id="e95928d60479-l1.6"> b</span><a href="#e95928d60479-l1.6"></a>
   <span id="e95928d60479-l1.7" class="minusline">-c+</span><a href="#e95928d60479-l1.7"></a>
   <span id="e95928d60479-l1.8" class="plusline">+c++</span><a href="#e95928d60479-l1.8"></a>
   <span id="e95928d60479-l1.9"> </span><a href="#e95928d60479-l1.9"></a>
   <span id="e95928d60479-l1.10"> a</span><a href="#e95928d60479-l1.10"></a>
   <span id="e95928d60479-l1.11"> a</span><a href="#e95928d60479-l1.11"></a></pre></div></td></tr>
    <tr>
     <td class="age">Thu, 01 Jan 1970 00:00:00 +0000</td>
     <td class="author">test</td>
     <td class="description">
      <a href="/rev/5c6574614c37">make c bigger and touch its beginning</a>
      <span class="branchname">a-branch</span> 
     </td>
    </tr>
    <tr><td colspan="3"><div class="bottomline inc-lineno"><pre class="sourcelines wrap">
   <span id="5c6574614c37-l1.1" class="minusline">--- a/c	Thu Jan 01 00:00:00 1970 +0000</span><a href="#5c6574614c37-l1.1"></a>
   <span id="5c6574614c37-l1.2" class="plusline">+++ b/c	Thu Jan 01 00:00:00 1970 +0000</span><a href="#5c6574614c37-l1.2"></a>
   <span id="5c6574614c37-l1.3" class="atline">@@ -1,2 +1,11 @@</span><a href="#5c6574614c37-l1.3"></a>
   <span id="5c6574614c37-l1.4" class="plusline">+0</span><a href="#5c6574614c37-l1.4"></a>
   <span id="5c6574614c37-l1.5" class="plusline">+0</span><a href="#5c6574614c37-l1.5"></a>
   <span id="5c6574614c37-l1.6"> b</span><a href="#5c6574614c37-l1.6"></a>
   <span id="5c6574614c37-l1.7" class="minusline">-c</span><a href="#5c6574614c37-l1.7"></a>
   <span id="5c6574614c37-l1.8" class="plusline">+c+</span><a href="#5c6574614c37-l1.8"></a>
   <span id="5c6574614c37-l1.9" class="plusline">+</span><a href="#5c6574614c37-l1.9"></a>
   <span id="5c6574614c37-l1.10" class="plusline">+a</span><a href="#5c6574614c37-l1.10"></a>
   <span id="5c6574614c37-l1.11" class="plusline">+a</span><a href="#5c6574614c37-l1.11"></a>
   <span id="5c6574614c37-l1.12" class="plusline">+</span><a href="#5c6574614c37-l1.12"></a>
   <span id="5c6574614c37-l1.13" class="plusline">+d</span><a href="#5c6574614c37-l1.13"></a>
   <span id="5c6574614c37-l1.14" class="plusline">+e</span><a href="#5c6574614c37-l1.14"></a>
   <span id="5c6574614c37-l1.15" class="plusline">+f</span><a href="#5c6574614c37-l1.15"></a></pre></div></td></tr>
    <tr>
     <td class="age">Thu, 01 Jan 1970 00:00:00 +0000</td>
     <td class="author">test</td>
     <td class="description">
      <a href="/rev/46c1a66bd8fc">change c</a>
      <span class="branchname">a-branch</span> 
     </td>
    </tr>
    <tr><td colspan="3"><div class="bottomline inc-lineno"><pre class="sourcelines wrap">
   <span id="46c1a66bd8fc-l1.1" class="minusline">--- a/c	Thu Jan 01 00:00:00 1970 +0000</span><a href="#46c1a66bd8fc-l1.1"></a>
   <span id="46c1a66bd8fc-l1.2" class="plusline">+++ b/c	Thu Jan 01 00:00:00 1970 +0000</span><a href="#46c1a66bd8fc-l1.2"></a>
   <span id="46c1a66bd8fc-l1.3" class="atline">@@ -1,1 +1,2 @@</span><a href="#46c1a66bd8fc-l1.3"></a>
   <span id="46c1a66bd8fc-l1.4"> b</span><a href="#46c1a66bd8fc-l1.4"></a>
   <span id="46c1a66bd8fc-l1.5" class="plusline">+c</span><a href="#46c1a66bd8fc-l1.5"></a></pre></div></td></tr>
    <tr>
     <td class="age">Thu, 01 Jan 1970 00:00:00 +0000</td>
     <td class="author">test</td>
     <td class="description">
      <a href="/rev/6563da9dcf87">b</a>
      
     </td>
    </tr>
    <tr><td colspan="3"><div class="bottomline inc-lineno"><pre class="sourcelines wrap">
   <span id="6563da9dcf87-l1.1" class="minusline">--- /dev/null	Thu Jan 01 00:00:00 1970 +0000</span><a href="#6563da9dcf87-l1.1"></a>
   <span id="6563da9dcf87-l1.2" class="plusline">+++ b/b	Thu Jan 01 00:00:00 1970 +0000</span><a href="#6563da9dcf87-l1.2"></a></pre></div></td></tr>
   
   </tbody>
   </table>
   
   <div class="navigate">
   <a href="/log/tip/c?linerange=3%3A4&patch=&revcount=30">less</a>
   <a href="/log/tip/c?linerange=3%3A4&patch=&revcount=120">more</a>
   |  
   </div>
   
   </div>
   </div>
   
   
   
   </body>
   </html>
   
+  $ hg log -r 'followlines(c, 3:4, startrev=8, descend=True) and follow(c)' -p
+  changeset:   10:e95928d60479
+  branch:      a-branch
+  user:        test
+  date:        Thu Jan 01 00:00:00 1970 +0000
+  summary:     touch beginning of c
+  
+  diff -r e1d3e9c5a23f -r e95928d60479 c
+  --- a/c	Thu Jan 01 00:00:00 1970 +0000
+  +++ b/c	Thu Jan 01 00:00:00 1970 +0000
+  @@ -1,7 +1,7 @@
+   0
+   0
+   b
+  -c+
+  +c++
+   
+   a
+   a
+  
+  changeset:   11:fb9bc322513a
+  branch:      a-branch
+  tag:         tip
+  user:        test
+  date:        Thu Jan 01 00:00:00 1970 +0000
+  summary:     touching beginning and end of c
+  
+  diff -r e95928d60479 -r fb9bc322513a c
+  --- a/c	Thu Jan 01 00:00:00 1970 +0000
+  +++ b/c	Thu Jan 01 00:00:00 1970 +0000
+  @@ -1,6 +1,6 @@
+   0
+   0
+  -b
+  +b-
+   c++
+   
+   a
+  @@ -8,4 +8,4 @@
+   
+   d
+   e+
+  -f
+  +f+
+  
+  $ (get-with-headers.py localhost:$HGPORT 'log/8/c?linerange=3:4&descend=')
+  200 Script output follows
+  
+  <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
+  <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US">
+  <head>
+  <link rel="icon" href="/static/hgicon.png" type="image/png" />
+  <meta name="robots" content="index, nofollow" />
+  <link rel="stylesheet" href="/static/style-paper.css" type="text/css" />
+  <script type="text/javascript" src="/static/mercurial.js"></script>
+  
+  <title>test: c history</title>
+  <link rel="alternate" type="application/atom+xml"
+     href="/atom-log/tip/c" title="Atom feed for test:c" />
+  <link rel="alternate" type="application/rss+xml"
+     href="/rss-log/tip/c" title="RSS feed for test:c" />
+  </head>
+  <body>
+  
+  <div class="container">
+  <div class="menu">
+  <div class="logo">
+  <a href="https://mercurial-scm.org/">
+  <img src="/static/hglogo.png" alt="mercurial" /></a>
+  </div>
+  <ul>
+  <li><a href="/shortlog/8">log</a></li>
+  <li><a href="/graph/8">graph</a></li>
+  <li><a href="/tags">tags</a></li>
+  <li><a href="/bookmarks">bookmarks</a></li>
+  <li><a href="/branches">branches</a></li>
+  </ul>
+  <ul>
+  <li><a href="/rev/8">changeset</a></li>
+  <li><a href="/file/8">browse</a></li>
+  </ul>
+  <ul>
+  <li><a href="/file/8/c">file</a></li>
+  <li><a href="/diff/8/c">diff</a></li>
+  <li><a href="/comparison/8/c">comparison</a></li>
+  <li><a href="/annotate/8/c">annotate</a></li>
+  <li class="active">file log</li>
+  <li><a href="/raw-file/8/c">raw</a></li>
+  </ul>
+  <ul>
+  <li><a href="/help">help</a></li>
+  </ul>
+  <div class="atom-logo">
+  <a href="/atom-log/tip/c" title="subscribe to atom feed">
+  <img class="atom-logo" src="/static/feed-icon-14x14.png" alt="atom feed" />
+  </a>
+  </div>
+  </div>
+  
+  <div class="main">
+  <h2 class="breadcrumb"><a href="/">Mercurial</a> </h2>
+  <h3>
+   log c @ 8:<a href="/rev/5c6574614c37">5c6574614c37</a>
+   <span class="branchname">a-branch</span> 
+    (following lines 3:4, descending <a href="/log/8/c">back to filelog</a>)
+  </h3>
+  
+  <form class="search" action="/log">
+  
+  <p><input name="rev" id="search1" type="text" size="30" /></p>
+  <div id="hint">Find changesets by keywords (author, files, the commit message), revision
+  number or hash, or <a href="/help/revsets">revset expression</a>.</div>
+  </form>
+  
+  <div class="navigate">
+  <a href="/log/8/c?descend=&linerange=3%3A4&revcount=30">less</a>
+  <a href="/log/8/c?descend=&linerange=3%3A4&revcount=120">more</a>
+  |  </div>
+  
+  <table class="bigtable">
+  <thead>
+   <tr>
+    <th class="age">age</th>
+    <th class="author">author</th>
+    <th class="description">description</th>
+   </tr>
+  </thead>
+  <tbody class="stripes2">
+   <tr>
+    <td class="age">Thu, 01 Jan 1970 00:00:00 +0000</td>
+    <td class="author">test</td>
+    <td class="description">
+     <a href="/rev/e95928d60479">touch beginning of c</a>
+     <span class="branchname">a-branch</span> 
+    </td>
+   </tr>
+   
+   <tr>
+    <td class="age">Thu, 01 Jan 1970 00:00:00 +0000</td>
+    <td class="author">test</td>
+    <td class="description">
+     <a href="/rev/fb9bc322513a">touching beginning and end of c</a>
+     <span class="branchhead">a-branch</span> <span class="tag">tip</span> 
+    </td>
+   </tr>
+   
+  
+  </tbody>
+  </table>
+  
+  <div class="navigate">
+  <a href="/log/8/c?descend=&linerange=3%3A4&revcount=30">less</a>
+  <a href="/log/8/c?descend=&linerange=3%3A4&revcount=120">more</a>
+  |  
+  </div>
+  
+  </div>
+  </div>
+  
+  
+  
+  </body>
+  </html>
+  
 
 rss log
 
   $ (get-with-headers.py localhost:$HGPORT 'rss-log/tip/a')
   200 Script output follows
   
   <?xml version="1.0" encoding="ascii"?>
   <rss version="2.0">
     <channel>
       <link>http://*:$HGPORT/</link> (glob)
       <language>en-us</language>
   
       <title>test: a history</title>
       <description>a revision history</description>
       <item>
       <title>second a</title>
       <link>http://*:$HGPORT/log/3f41bc784e7e/a</link> (glob)
       <description><![CDATA[second a]]></description>
       <author>&#116;&#101;&#115;&#116;</author>
       <pubDate>Thu, 01 Jan 1970 00:00:00 +0000</pubDate>
   </item>
   <item>
       <title>first a</title>
       <link>http://*:$HGPORT/log/5ed941583260/a</link> (glob)
       <description><![CDATA[first a]]></description>
       <author>&#116;&#101;&#115;&#116;</author>
       <pubDate>Thu, 01 Jan 1970 00:00:00 +0000</pubDate>
   </item>
   
     </channel>
   </rss>
 
 atom log
 
   $ (get-with-headers.py localhost:$HGPORT 'atom-log/tip/a')
   200 Script output follows
   
   <?xml version="1.0" encoding="ascii"?>
   <feed xmlns="http://www.w3.org/2005/Atom">
    <id>http://*:$HGPORT/atom-log/tip/a</id> (glob)
    <link rel="self" href="http://*:$HGPORT/atom-log/tip/a"/> (glob)
    <title>test: a history</title>
    <updated>1970-01-01T00:00:00+00:00</updated>
   
    <entry>
     <title>[a-branch] second a</title>
     <id>http://*:$HGPORT/#changeset-3f41bc784e7e73035c6d47112c6cc7efb673adf8</id> (glob)
     <link href="http://*:$HGPORT/rev/3f41bc784e7e"/> (glob)
     <author>
      <name>test</name>
      <email>&#116;&#101;&#115;&#116;</email>
     </author>
     <updated>1970-01-01T00:00:00+00:00</updated>
     <published>1970-01-01T00:00:00+00:00</published>
     <content type="xhtml">
      <table xmlns="http://www.w3.org/1999/xhtml">
       <tr>
        <th style="text-align:left;">changeset</th>
        <td>3f41bc784e7e</td>
       </tr>
       <tr>
        <th style="text-align:left;">branch</th>
        <td>a-branch</td>
       </tr>
       <tr>
        <th style="text-align:left;">bookmark</th>
        <td></td>
       </tr>
       <tr>
        <th style="text-align:left;">tag</th>
        <td></td>
       </tr>
       <tr>
        <th style="text-align:left;">user</th>
        <td>&#116;&#101;&#115;&#116;</td>
       </tr>
       <tr>
        <th style="text-align:left;vertical-align:top;">description</th>
        <td>second a</td>
       </tr>
       <tr>
        <th style="text-align:left;vertical-align:top;">files</th>
        <td></td>
       </tr>
      </table>
     </content>
    </entry>
    <entry>
     <title>first a</title>
     <id>http://*:$HGPORT/#changeset-5ed941583260248620985524192fdc382ef57c36</id> (glob)
     <link href="http://*:$HGPORT/rev/5ed941583260"/> (glob)
     <author>
      <name>test</name>
      <email>&#116;&#101;&#115;&#116;</email>
     </author>
     <updated>1970-01-01T00:00:00+00:00</updated>
     <published>1970-01-01T00:00:00+00:00</published>
     <content type="xhtml">
      <table xmlns="http://www.w3.org/1999/xhtml">
       <tr>
        <th style="text-align:left;">changeset</th>
        <td>5ed941583260</td>
       </tr>
       <tr>
        <th style="text-align:left;">branch</th>
        <td></td>
       </tr>
       <tr>
        <th style="text-align:left;">bookmark</th>
        <td>a-bookmark</td>
       </tr>
       <tr>
        <th style="text-align:left;">tag</th>
        <td>a-tag</td>
       </tr>
       <tr>
        <th style="text-align:left;">user</th>
        <td>&#116;&#101;&#115;&#116;</td>
       </tr>
       <tr>
        <th style="text-align:left;vertical-align:top;">description</th>
        <td>first a</td>
       </tr>
       <tr>
        <th style="text-align:left;vertical-align:top;">files</th>
        <td></td>
       </tr>
      </table>
     </content>
    </entry>
   
   </feed>
 
 errors
 
   $ cat errors.log
 
   $ cd ..