help: suggest '-v -e' to get built-in aliases for extensions (issue4461)

If extension name matches one of command names, suggest user to type
'hg help -v -e <extension>' to get full list of built-in aliases

mercurial/help.py

@@ -1,501 +1,504 b''
 # help.py - help data for mercurial
 #
 # Copyright 2006 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 i18n import gettext, _
 import itertools, os
 import error
 import extensions, revset, fileset, templatekw, templatefilters, filemerge
 import encoding, util, minirst
 import cmdutil
 
 def listexts(header, exts, indent=1, showdeprecated=False):
     '''return a text listing of the given extensions'''
     rst = []
     if exts:
         rst.append('\n%s\n\n' % header)
         for name, desc in sorted(exts.iteritems()):
             if '(DEPRECATED)' in desc and not showdeprecated:
                 continue
             rst.append('%s:%s: %s\n' % (' ' * indent, name, desc))
     return rst
 
 def extshelp():
     rst = loaddoc('extensions')().splitlines(True)
     rst.extend(listexts(
         _('enabled extensions:'), extensions.enabled(), showdeprecated=True))
     rst.extend(listexts(_('disabled extensions:'), extensions.disabled()))
     doc = ''.join(rst)
     return doc
 
 def optrst(header, options, verbose):
     data = []
     multioccur = False
     for option in options:
         if len(option) == 5:
             shortopt, longopt, default, desc, optlabel = option
         else:
             shortopt, longopt, default, desc = option
             optlabel = _("VALUE") # default label
 
         if not verbose and ("DEPRECATED" in desc or _("DEPRECATED") in desc):
             continue
 
         so = ''
         if shortopt:
             so = '-' + shortopt
         lo = '--' + longopt
         if default:
             desc += _(" (default: %s)") % default
 
         if isinstance(default, list):
             lo += " %s [+]" % optlabel
             multioccur = True
         elif (default is not None) and not isinstance(default, bool):
             lo += " %s" % optlabel
 
         data.append((so, lo, desc))
 
     if multioccur:
         header += (_(" ([+] can be repeated)"))
 
     rst = ['\n%s:\n\n' % header]
     rst.extend(minirst.maketable(data, 1))
 
     return ''.join(rst)
 
 def indicateomitted(rst, omitted, notomitted=None):
     rst.append('\n\n.. container:: omitted\n\n    %s\n\n' % omitted)
     if notomitted:
         rst.append('\n\n.. container:: notomitted\n\n    %s\n\n' % notomitted)
 
 def topicmatch(kw):
     """Return help topics matching kw.
 
     Returns {'section': [(name, summary), ...], ...} where section is
     one of topics, commands, extensions, or extensioncommands.
     """
     kw = encoding.lower(kw)
     def lowercontains(container):
         return kw in encoding.lower(container)  # translated in helptable
     results = {'topics': [],
                'commands': [],
                'extensions': [],
                'extensioncommands': [],
                }
     for names, header, doc in helptable:
         # Old extensions may use a str as doc.
         if (sum(map(lowercontains, names))
             or lowercontains(header)
             or (callable(doc) and lowercontains(doc()))):
             results['topics'].append((names[0], header))
     import commands # avoid cycle
     for cmd, entry in commands.table.iteritems():
         if len(entry) == 3:
             summary = entry[2]
         else:
             summary = ''
         # translate docs *before* searching there
         docs = _(getattr(entry[0], '__doc__', None)) or ''
         if kw in cmd or lowercontains(summary) or lowercontains(docs):
             doclines = docs.splitlines()
             if doclines:
                 summary = doclines[0]
             cmdname = cmd.split('|')[0].lstrip('^')
             results['commands'].append((cmdname, summary))
     for name, docs in itertools.chain(
         extensions.enabled(False).iteritems(),
         extensions.disabled().iteritems()):
         # extensions.load ignores the UI argument
         mod = extensions.load(None, name, '')
         name = name.split('.')[-1]
         if lowercontains(name) or lowercontains(docs):
             # extension docs are already translated
             results['extensions'].append((name, docs.splitlines()[0]))
         for cmd, entry in getattr(mod, 'cmdtable', {}).iteritems():
             if kw in cmd or (len(entry) > 2 and lowercontains(entry[2])):
                 cmdname = cmd.split('|')[0].lstrip('^')
                 if entry[0].__doc__:
                     cmddoc = gettext(entry[0].__doc__).splitlines()[0]
                 else:
                     cmddoc = _('(no help text available)')
                 results['extensioncommands'].append((cmdname, cmddoc))
     return results
 
 def loaddoc(topic):
     """Return a delayed loader for help/topic.txt."""
 
     def loader():
         docdir = os.path.join(util.datapath, 'help')
         path = os.path.join(docdir, topic + ".txt")
         doc = gettext(util.readfile(path))
         for rewriter in helphooks.get(topic, []):
             doc = rewriter(topic, doc)
         return doc
 
     return loader
 
 helptable = sorted([
     (["config", "hgrc"], _("Configuration Files"), loaddoc('config')),
     (["dates"], _("Date Formats"), loaddoc('dates')),
     (["patterns"], _("File Name Patterns"), loaddoc('patterns')),
     (['environment', 'env'], _('Environment Variables'),
      loaddoc('environment')),
     (['revisions', 'revs'], _('Specifying Single Revisions'),
      loaddoc('revisions')),
     (['multirevs', 'mrevs'], _('Specifying Multiple Revisions'),
      loaddoc('multirevs')),
     (['revsets', 'revset'], _("Specifying Revision Sets"), loaddoc('revsets')),
     (['filesets', 'fileset'], _("Specifying File Sets"), loaddoc('filesets')),
     (['diffs'], _('Diff Formats'), loaddoc('diffs')),
     (['merge-tools', 'mergetools'], _('Merge Tools'), loaddoc('merge-tools')),
     (['templating', 'templates', 'template', 'style'], _('Template Usage'),
      loaddoc('templates')),
     (['urls'], _('URL Paths'), loaddoc('urls')),
     (["extensions"], _("Using Additional Features"), extshelp),
     (["subrepos", "subrepo"], _("Subrepositories"), loaddoc('subrepos')),
     (["hgweb"], _("Configuring hgweb"), loaddoc('hgweb')),
     (["glossary"], _("Glossary"), loaddoc('glossary')),
     (["hgignore", "ignore"], _("Syntax for Mercurial Ignore Files"),
      loaddoc('hgignore')),
     (["phases"], _("Working with Phases"), loaddoc('phases')),
 ])
 
 # Map topics to lists of callable taking the current topic help and
 # returning the updated version
 helphooks = {}
 
 def addtopichook(topic, rewriter):
     helphooks.setdefault(topic, []).append(rewriter)
 
 def makeitemsdoc(topic, doc, marker, items):
     """Extract docstring from the items key to function mapping, build a
     .single documentation block and use it to overwrite the marker in doc
     """
     entries = []
     for name in sorted(items):
         text = (items[name].__doc__ or '').rstrip()
         if not text:
             continue
         text = gettext(text)
         lines = text.splitlines()
         doclines = [(lines[0])]
         for l in lines[1:]:
             # Stop once we find some Python doctest
             if l.strip().startswith('>>>'):
                 break
             doclines.append('  ' + l.strip())
         entries.append('\n'.join(doclines))
     entries = '\n\n'.join(entries)
     return doc.replace(marker, entries)
 
 def addtopicsymbols(topic, marker, symbols):
     def add(topic, doc):
         return makeitemsdoc(topic, doc, marker, symbols)
     addtopichook(topic, add)
 
 addtopicsymbols('filesets', '.. predicatesmarker', fileset.symbols)
 addtopicsymbols('merge-tools', '.. internaltoolsmarker', filemerge.internals)
 addtopicsymbols('revsets', '.. predicatesmarker', revset.symbols)
 addtopicsymbols('templates', '.. keywordsmarker', templatekw.dockeywords)
 addtopicsymbols('templates', '.. filtersmarker', templatefilters.filters)
 
 def help_(ui, name, unknowncmd=False, full=True, **opts):
     '''
     Generate the help for 'name' as unformatted restructured text. If
     'name' is None, describe the commands available.
     '''
 
     import commands # avoid cycle
 
     def helpcmd(name):
         try:
             aliases, entry = cmdutil.findcmd(name, commands.table,
                                              strict=unknowncmd)
         except error.AmbiguousCommand, inst:
             # py3k fix: except vars can't be used outside the scope of the
             # except block, nor can be used inside a lambda. python issue4617
             prefix = inst.args[0]
             select = lambda c: c.lstrip('^').startswith(prefix)
             rst = helplist(select)
             return rst
 
         rst = []
 
         # check if it's an invalid alias and display its error if it is
         if getattr(entry[0], 'badalias', None):
             rst.append(entry[0].badalias + '\n')
             if entry[0].unknowncmd:
                 try:
                     rst.extend(helpextcmd(entry[0].cmdname))
                 except error.UnknownCommand:
                     pass
             return rst
 
         # synopsis
         if len(entry) > 2:
             if entry[2].startswith('hg'):
                 rst.append("%s\n" % entry[2])
             else:
                 rst.append('hg %s %s\n' % (aliases[0], entry[2]))
         else:
             rst.append('hg %s\n' % aliases[0])
         # aliases
         if full and not ui.quiet and len(aliases) > 1:
             rst.append(_("\naliases: %s\n") % ', '.join(aliases[1:]))
         rst.append('\n')
 
         # description
         doc = gettext(entry[0].__doc__)
         if not doc:
             doc = _("(no help text available)")
         if util.safehasattr(entry[0], 'definition'):  # aliased command
             if entry[0].definition.startswith('!'):  # shell alias
                 doc = _('shell alias for::\n\n    %s') % entry[0].definition[1:]
             else:
                 doc = _('alias for: hg %s\n\n%s') % (entry[0].definition, doc)
         doc = doc.splitlines(True)
         if ui.quiet or not full:
             rst.append(doc[0])
         else:
             rst.extend(doc)
         rst.append('\n')
 
         # check if this command shadows a non-trivial (multi-line)
         # extension help text
         try:
             mod = extensions.find(name)
             doc = gettext(mod.__doc__) or ''
             if '\n' in doc.strip():
                 msg = _('(use "hg help -e %s" to show help for '
                         'the %s extension)') % (name, name)
                 rst.append('\n%s\n' % msg)
         except KeyError:
             pass
 
         # options
         if not ui.quiet and entry[1]:
             rst.append(optrst(_("options"), entry[1], ui.verbose))
 
         if ui.verbose:
             rst.append(optrst(_("global options"),
                               commands.globalopts, ui.verbose))
 
         if not ui.verbose:
             if not full:
                 rst.append(_('\n(use "hg %s -h" to show more help)\n')
                            % name)
             elif not ui.quiet:
                 rst.append(_('\n(some details hidden, use --verbose '
                                'to show complete help)'))
 
         return rst
 
 
     def helplist(select=None):
         # list of commands
         if name == "shortlist":
             header = _('basic commands:\n\n')
         elif name == "debug":
             header = _('debug commands (internal and unsupported):\n\n')
         else:
             header = _('list of commands:\n\n')
 
         h = {}
         cmds = {}
         for c, e in commands.table.iteritems():
             f = c.split("|", 1)[0]
             if select and not select(f):
                 continue
             if (not select and name != 'shortlist' and
                 e[0].__module__ != commands.__name__):
                 continue
             if name == "shortlist" and not f.startswith("^"):
                 continue
             f = f.lstrip("^")
             if not ui.debugflag and f.startswith("debug") and name != "debug":
                 continue
             doc = e[0].__doc__
             if doc and 'DEPRECATED' in doc and not ui.verbose:
                 continue
             doc = gettext(doc)
             if not doc:
                 doc = _("(no help text available)")
             h[f] = doc.splitlines()[0].rstrip()
             cmds[f] = c.lstrip("^")
 
         rst = []
         if not h:
             if not ui.quiet:
                 rst.append(_('no commands defined\n'))
             return rst
 
         if not ui.quiet:
             rst.append(header)
         fns = sorted(h)
         for f in fns:
             if ui.verbose:
                 commacmds = cmds[f].replace("|",", ")
                 rst.append(" :%s: %s\n" % (commacmds, h[f]))
             else:
                 rst.append(' :%s: %s\n' % (f, h[f]))
 
         if not name:
             exts = listexts(_('enabled extensions:'), extensions.enabled())
             if exts:
                 rst.append('\n')
                 rst.extend(exts)
 
             rst.append(_("\nadditional help topics:\n\n"))
             topics = []
             for names, header, doc in helptable:
                 topics.append((names[0], header))
             for t, desc in topics:
                 rst.append(" :%s: %s\n" % (t, desc))
 
         if ui.quiet:
             pass
         elif ui.verbose:
             rst.append('\n%s\n' % optrst(_("global options"),
                                          commands.globalopts, ui.verbose))
             if name == 'shortlist':
                 rst.append(_('\n(use "hg help" for the full list '
                              'of commands)\n'))
         else:
             if name == 'shortlist':
                 rst.append(_('\n(use "hg help" for the full list of commands '
                              'or "hg -v" for details)\n'))
             elif name and not full:
                 rst.append(_('\n(use "hg help %s" to show the full help '
                              'text)\n') % name)
+            elif name and cmds and name in cmds.keys():
+                rst.append(_('\n(use "hg help -v -e %s" to show built-in '
+                             'aliases and global options)\n') % name)
             else:
                 rst.append(_('\n(use "hg help -v%s" to show built-in aliases '
                              'and global options)\n')
                            % (name and " " + name or ""))
         return rst
 
     def helptopic(name):
         for names, header, doc in helptable:
             if name in names:
                 break
         else:
             raise error.UnknownCommand(name)
 
         rst = [minirst.section(header)]
 
         # description
         if not doc:
             rst.append("    %s\n" % _("(no help text available)"))
         if callable(doc):
             rst += ["    %s\n" % l for l in doc().splitlines()]
 
         if not ui.verbose:
             omitted = _('(some details hidden, use --verbose'
                          ' to show complete help)')
             indicateomitted(rst, omitted)
 
         try:
             cmdutil.findcmd(name, commands.table)
             rst.append(_('\nuse "hg help -c %s" to see help for '
                        'the %s command\n') % (name, name))
         except error.UnknownCommand:
             pass
         return rst
 
     def helpext(name):
         try:
             mod = extensions.find(name)
             doc = gettext(mod.__doc__) or _('no help text available')
         except KeyError:
             mod = None
             doc = extensions.disabledext(name)
             if not doc:
                 raise error.UnknownCommand(name)
 
         if '\n' not in doc:
             head, tail = doc, ""
         else:
             head, tail = doc.split('\n', 1)
         rst = [_('%s extension - %s\n\n') % (name.split('.')[-1], head)]
         if tail:
             rst.extend(tail.splitlines(True))
             rst.append('\n')
 
         if not ui.verbose:
             omitted = _('(some details hidden, use --verbose'
                          ' to show complete help)')
             indicateomitted(rst, omitted)
 
         if mod:
             try:
                 ct = mod.cmdtable
             except AttributeError:
                 ct = {}
             modcmds = set([c.split('|', 1)[0] for c in ct])
             rst.extend(helplist(modcmds.__contains__))
         else:
             rst.append(_('(use "hg help extensions" for information on enabling'
                        ' extensions)\n'))
         return rst
 
     def helpextcmd(name):
         cmd, ext, mod = extensions.disabledcmd(ui, name,
                                                ui.configbool('ui', 'strict'))
         doc = gettext(mod.__doc__).splitlines()[0]
 
         rst = listexts(_("'%s' is provided by the following "
                               "extension:") % cmd, {ext: doc}, indent=4)
         rst.append('\n')
         rst.append(_('(use "hg help extensions" for information on enabling '
                    'extensions)\n'))
         return rst
 
 
     rst = []
     kw = opts.get('keyword')
     if kw:
         matches = topicmatch(kw)
         for t, title in (('topics', _('Topics')),
                          ('commands', _('Commands')),
                          ('extensions', _('Extensions')),
                          ('extensioncommands', _('Extension Commands'))):
             if matches[t]:
                 rst.append('%s:\n\n' % title)
                 rst.extend(minirst.maketable(sorted(matches[t]), 1))
                 rst.append('\n')
         if not rst:
             msg = _('no matches')
             hint = _('try "hg help" for a list of topics')
             raise util.Abort(msg, hint=hint)
     elif name and name != 'shortlist':
         if unknowncmd:
             queries = (helpextcmd,)
         elif opts.get('extension'):
             queries = (helpext,)
         elif opts.get('command'):
             queries = (helpcmd,)
         else:
             queries = (helptopic, helpcmd, helpext, helpextcmd)
         for f in queries:
             try:
                 rst = f(name)
                 break
             except error.UnknownCommand:
                 pass
         else:
             if unknowncmd:
                 raise error.UnknownCommand(name)
             else:
                 msg = _('no such help topic: %s') % name
                 hint = _('try "hg help --keyword %s"') % name
                 raise util.Abort(msg, hint=hint)
     else:
         # program name
         if not ui.quiet:
             rst = [_("Mercurial Distributed SCM\n"), '\n']
         rst.extend(helplist())
 
     return ''.join(rst)

tests/test-extension.t

@@ -1,917 +1,1125 b''
 Test basic extension support
 
   $ cat > foobar.py <<EOF
   > import os
   > from mercurial import cmdutil, commands
   > cmdtable = {}
   > command = cmdutil.command(cmdtable)
   > def uisetup(ui):
   >     ui.write("uisetup called\\n")
   > def reposetup(ui, repo):
   >     ui.write("reposetup called for %s\\n" % os.path.basename(repo.root))
   >     ui.write("ui %s= repo.ui\\n" % (ui == repo.ui and "=" or "!"))
   > @command('foo', [], 'hg foo')
   > def foo(ui, *args, **kwargs):
   >     ui.write("Foo\\n")
   > @command('bar', [], 'hg bar', norepo=True)
   > def bar(ui, *args, **kwargs):
   >     ui.write("Bar\\n")
   > EOF
   $ abspath=`pwd`/foobar.py
 
   $ mkdir barfoo
   $ cp foobar.py barfoo/__init__.py
   $ barfoopath=`pwd`/barfoo
 
   $ hg init a
   $ cd a
   $ echo foo > file
   $ hg add file
   $ hg commit -m 'add file'
 
   $ echo '[extensions]' >> $HGRCPATH
   $ echo "foobar = $abspath" >> $HGRCPATH
   $ hg foo
   uisetup called
   reposetup called for a
   ui == repo.ui
   Foo
 
   $ cd ..
   $ hg clone a b
   uisetup called
   reposetup called for a
   ui == repo.ui
   reposetup called for b
   ui == repo.ui
   updating to branch default
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
 
   $ hg bar
   uisetup called
   Bar
   $ echo 'foobar = !' >> $HGRCPATH
 
 module/__init__.py-style
 
   $ echo "barfoo = $barfoopath" >> $HGRCPATH
   $ cd a
   $ hg foo
   uisetup called
   reposetup called for a
   ui == repo.ui
   Foo
   $ echo 'barfoo = !' >> $HGRCPATH
 
 Check that extensions are loaded in phases:
 
   $ cat > foo.py <<EOF
   > import os
   > name = os.path.basename(__file__).rsplit('.', 1)[0]
   > print "1) %s imported" % name
   > def uisetup(ui):
   >     print "2) %s uisetup" % name
   > def extsetup():
   >     print "3) %s extsetup" % name
   > def reposetup(ui, repo):
   >    print "4) %s reposetup" % name
   > EOF
 
   $ cp foo.py bar.py
   $ echo 'foo = foo.py' >> $HGRCPATH
   $ echo 'bar = bar.py' >> $HGRCPATH
 
 Command with no output, we just want to see the extensions loaded:
 
   $ hg paths
   1) foo imported
   1) bar imported
   2) foo uisetup
   2) bar uisetup
   3) foo extsetup
   3) bar extsetup
   4) foo reposetup
   4) bar reposetup
 
 Check hgweb's load order:
 
   $ cat > hgweb.cgi <<EOF
   > #!/usr/bin/env python
   > from mercurial import demandimport; demandimport.enable()
   > from mercurial.hgweb import hgweb
   > from mercurial.hgweb import wsgicgi
   > application = hgweb('.', 'test repo')
   > wsgicgi.launch(application)
   > EOF
 
   $ REQUEST_METHOD='GET' PATH_INFO='/' SCRIPT_NAME='' QUERY_STRING='' \
   >    SERVER_PORT='80' SERVER_NAME='localhost' python hgweb.cgi \
   >    | grep '^[0-9]) ' # ignores HTML output
   1) foo imported
   1) bar imported
   2) foo uisetup
   2) bar uisetup
   3) foo extsetup
   3) bar extsetup
   4) foo reposetup
   4) bar reposetup
   4) foo reposetup
   4) bar reposetup
 
   $ echo 'foo = !' >> $HGRCPATH
   $ echo 'bar = !' >> $HGRCPATH
 
 Check "from __future__ import absolute_import" support for external libraries
 
 #if windows
   $ PATHSEP=";"
 #else
   $ PATHSEP=":"
 #endif
   $ export PATHSEP
 
   $ mkdir $TESTTMP/libroot
   $ echo "s = 'libroot/ambig.py'" > $TESTTMP/libroot/ambig.py
   $ mkdir $TESTTMP/libroot/mod
   $ touch $TESTTMP/libroot/mod/__init__.py
   $ echo "s = 'libroot/mod/ambig.py'" > $TESTTMP/libroot/mod/ambig.py
 
 #if absimport
   $ cat > $TESTTMP/libroot/mod/ambigabs.py <<EOF
   > from __future__ import absolute_import
   > import ambig # should load "libroot/ambig.py"
   > s = ambig.s
   > EOF
   $ cat > loadabs.py <<EOF
   > import mod.ambigabs as ambigabs
   > def extsetup():
   >     print 'ambigabs.s=%s' % ambigabs.s
   > EOF
   $ (PYTHONPATH=${PYTHONPATH}${PATHSEP}${TESTTMP}/libroot; hg --config extensions.loadabs=loadabs.py root)
   ambigabs.s=libroot/ambig.py
   $TESTTMP/a (glob)
 #endif
 
 #if no-py3k
   $ cat > $TESTTMP/libroot/mod/ambigrel.py <<EOF
   > import ambig # should load "libroot/mod/ambig.py"
   > s = ambig.s
   > EOF
   $ cat > loadrel.py <<EOF
   > import mod.ambigrel as ambigrel
   > def extsetup():
   >     print 'ambigrel.s=%s' % ambigrel.s
   > EOF
   $ (PYTHONPATH=${PYTHONPATH}${PATHSEP}${TESTTMP}/libroot; hg --config extensions.loadrel=loadrel.py root)
   ambigrel.s=libroot/mod/ambig.py
   $TESTTMP/a (glob)
 #endif
 
 Check absolute/relative import of extension specific modules
 
   $ mkdir $TESTTMP/extroot
   $ cat > $TESTTMP/extroot/bar.py <<EOF
   > s = 'this is extroot.bar'
   > EOF
   $ mkdir $TESTTMP/extroot/sub1
   $ cat > $TESTTMP/extroot/sub1/__init__.py <<EOF
   > s = 'this is extroot.sub1.__init__'
   > EOF
   $ cat > $TESTTMP/extroot/sub1/baz.py <<EOF
   > s = 'this is extroot.sub1.baz'
   > EOF
   $ cat > $TESTTMP/extroot/__init__.py <<EOF
   > s = 'this is extroot.__init__'
   > import foo
   > def extsetup(ui):
   >     ui.write('(extroot) ', foo.func(), '\n')
   > EOF
 
   $ cat > $TESTTMP/extroot/foo.py <<EOF
   > # test absolute import
   > buf = []
   > def func():
   >     # "not locals" case
   >     import extroot.bar
   >     buf.append('import extroot.bar in func(): %s' % extroot.bar.s)
   >     return '\n(extroot) '.join(buf)
   > # "fromlist == ('*',)" case
   > from extroot.bar import *
   > buf.append('from extroot.bar import *: %s' % s)
   > # "not fromlist" and "if '.' in name" case
   > import extroot.sub1.baz
   > buf.append('import extroot.sub1.baz: %s' % extroot.sub1.baz.s)
   > # "not fromlist" and NOT "if '.' in name" case
   > import extroot
   > buf.append('import extroot: %s' % extroot.s)
   > # NOT "not fromlist" and NOT "level != -1" case
   > from extroot.bar import s
   > buf.append('from extroot.bar import s: %s' % s)
   > EOF
   $ hg --config extensions.extroot=$TESTTMP/extroot root
   (extroot) from extroot.bar import *: this is extroot.bar
   (extroot) import extroot.sub1.baz: this is extroot.sub1.baz
   (extroot) import extroot: this is extroot.__init__
   (extroot) from extroot.bar import s: this is extroot.bar
   (extroot) import extroot.bar in func(): this is extroot.bar
   $TESTTMP/a (glob)
 
 #if no-py3k
   $ rm "$TESTTMP"/extroot/foo.*
   $ cat > $TESTTMP/extroot/foo.py <<EOF
   > # test relative import
   > buf = []
   > def func():
   >     # "not locals" case
   >     import bar
   >     buf.append('import bar in func(): %s' % bar.s)
   >     return '\n(extroot) '.join(buf)
   > # "fromlist == ('*',)" case
   > from bar import *
   > buf.append('from bar import *: %s' % s)
   > # "not fromlist" and "if '.' in name" case
   > import sub1.baz
   > buf.append('import sub1.baz: %s' % sub1.baz.s)
   > # "not fromlist" and NOT "if '.' in name" case
   > import sub1
   > buf.append('import sub1: %s' % sub1.s)
   > # NOT "not fromlist" and NOT "level != -1" case
   > from bar import s
   > buf.append('from bar import s: %s' % s)
   > EOF
   $ hg --config extensions.extroot=$TESTTMP/extroot root
   (extroot) from bar import *: this is extroot.bar
   (extroot) import sub1.baz: this is extroot.sub1.baz
   (extroot) import sub1: this is extroot.sub1.__init__
   (extroot) from bar import s: this is extroot.bar
   (extroot) import bar in func(): this is extroot.bar
   $TESTTMP/a (glob)
 #endif
 
   $ cd ..
 
 hide outer repo
   $ hg init
 
   $ cat > empty.py <<EOF
   > '''empty cmdtable
   > '''
   > cmdtable = {}
   > EOF
   $ emptypath=`pwd`/empty.py
   $ echo "empty = $emptypath" >> $HGRCPATH
   $ hg help empty
   empty extension - empty cmdtable
   
   no commands defined
 
 
   $ echo 'empty = !' >> $HGRCPATH
 
   $ cat > debugextension.py <<EOF
   > '''only debugcommands
   > '''
   > from mercurial import cmdutil
   > cmdtable = {}
   > command = cmdutil.command(cmdtable)
   > @command('debugfoobar', [], 'hg debugfoobar')
   > def debugfoobar(ui, repo, *args, **opts):
   >     "yet another debug command"
   >     pass
   > @command('foo', [], 'hg foo')
   > def foo(ui, repo, *args, **opts):
   >     """yet another foo command
   >     This command has been DEPRECATED since forever.
   >     """
   >     pass
   > EOF
   $ debugpath=`pwd`/debugextension.py
   $ echo "debugextension = $debugpath" >> $HGRCPATH
 
   $ hg help debugextension
   debugextension extension - only debugcommands
   
   no commands defined
 
 
   $ hg --verbose help debugextension
   debugextension extension - only debugcommands
   
   list of commands:
   
    foo           yet another foo command
   
   global options ([+] can be repeated):
   
    -R --repository REPO   repository root directory or name of overlay bundle
                           file
       --cwd DIR           change working directory
    -y --noninteractive    do not prompt, automatically pick the first choice for
                           all prompts
    -q --quiet             suppress output
    -v --verbose           enable additional output
       --config CONFIG [+] set/override config option (use 'section.name=value')
       --debug             enable debugging output
       --debugger          start debugger
       --encoding ENCODE   set the charset encoding (default: ascii)
       --encodingmode MODE set the charset encoding mode (default: strict)
       --traceback         always print a traceback on exception
       --time              time how long the command takes
       --profile           print command execution profile
       --version           output version information and exit
    -h --help              display help and exit
       --hidden            consider hidden changesets
 
 
 
 
 
 
   $ hg --debug help debugextension
   debugextension extension - only debugcommands
   
   list of commands:
   
    debugfoobar   yet another debug command
    foo           yet another foo command
   
   global options ([+] can be repeated):
   
    -R --repository REPO   repository root directory or name of overlay bundle
                           file
       --cwd DIR           change working directory
    -y --noninteractive    do not prompt, automatically pick the first choice for
                           all prompts
    -q --quiet             suppress output
    -v --verbose           enable additional output
       --config CONFIG [+] set/override config option (use 'section.name=value')
       --debug             enable debugging output
       --debugger          start debugger
       --encoding ENCODE   set the charset encoding (default: ascii)
       --encodingmode MODE set the charset encoding mode (default: strict)
       --traceback         always print a traceback on exception
       --time              time how long the command takes
       --profile           print command execution profile
       --version           output version information and exit
    -h --help              display help and exit
       --hidden            consider hidden changesets
 
 
 
 
 
   $ echo 'debugextension = !' >> $HGRCPATH
 
 Extension module help vs command help:
 
   $ echo 'extdiff =' >> $HGRCPATH
   $ hg help extdiff
   hg extdiff [OPT]... [FILE]...
   
   use external program to diff repository (or selected files)
   
       Show differences between revisions for the specified files, using an
       external program. The default program used is diff, with default options
       "-Npru".
   
       To select a different program, use the -p/--program option. The program
       will be passed the names of two directories to compare. To pass additional
       options to the program, use -o/--option. These will be passed before the
       names of the directories to compare.
   
       When two revision arguments are given, then changes are shown between
       those revisions. If only one revision is specified then that revision is
       compared to the working directory, and, when no revisions are specified,
       the working directory files are compared to its parent.
   
   (use "hg help -e extdiff" to show help for the extdiff extension)
   
   options ([+] can be repeated):
   
    -p --program CMD         comparison program to run
    -o --option OPT [+]      pass option to comparison program
    -r --rev REV [+]         revision
    -c --change REV          change made by revision
    -I --include PATTERN [+] include names matching the given patterns
    -X --exclude PATTERN [+] exclude names matching the given patterns
   
   (some details hidden, use --verbose to show complete help)
 
 
 
 
 
 
 
 
 
 
   $ hg help --extension extdiff
   extdiff extension - command to allow external programs to compare revisions
   
   The extdiff Mercurial extension allows you to use external programs to compare
   revisions, or revision with working directory. The external diff programs are
   called with a configurable set of options and two non-option arguments: paths
   to directories containing snapshots of files to compare.
   
   The extdiff extension also allows you to configure new diff commands, so you
   do not need to type "hg extdiff -p kdiff3" always.
   
     [extdiff]
     # add new command that runs GNU diff(1) in 'context diff' mode
     cdiff = gdiff -Nprc5
     ## or the old way:
     #cmd.cdiff = gdiff
     #opts.cdiff = -Nprc5
   
     # add new command called meld, runs meld (no need to name twice).  If
     # the meld executable is not available, the meld tool in [merge-tools]
     # will be used, if available
     meld =
   
     # add new command called vimdiff, runs gvimdiff with DirDiff plugin
     # (see http://www.vim.org/scripts/script.php?script_id=102) Non
     # English user, be sure to put "let g:DirDiffDynamicDiffText = 1" in
     # your .vimrc
     vimdiff = gvim -f "+next" \
               "+execute 'DirDiff' fnameescape(argv(0)) fnameescape(argv(1))"
   
   Tool arguments can include variables that are expanded at runtime:
   
     $parent1, $plabel1 - filename, descriptive label of first parent
     $child,   $clabel  - filename, descriptive label of child revision
     $parent2, $plabel2 - filename, descriptive label of second parent
     $root              - repository root
     $parent is an alias for $parent1.
   
   The extdiff extension will look in your [diff-tools] and [merge-tools]
   sections for diff tool arguments, when none are specified in [extdiff].
   
     [extdiff]
     kdiff3 =
   
     [diff-tools]
     kdiff3.diffargs=--L1 '$plabel1' --L2 '$clabel' $parent $child
   
   You can use -I/-X and list of file or directory names like normal "hg diff"
   command. The extdiff extension makes snapshots of only needed files, so
   running the external diff program will actually be pretty fast (at least
   faster than having to compare the entire tree).
   
   list of commands:
   
    extdiff       use external program to diff repository (or selected files)
   
-  (use "hg help -v extdiff" to show built-in aliases and global options)
+  (use "hg help -v -e extdiff" to show built-in aliases and global options)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   $ echo 'extdiff = !' >> $HGRCPATH
 
 Test help topic with same name as extension
 
   $ cat > multirevs.py <<EOF
   > from mercurial import cmdutil, commands
   > cmdtable = {}
   > command = cmdutil.command(cmdtable)
   > """multirevs extension
   > Big multi-line module docstring."""
   > @command('multirevs', [], 'ARG', norepo=True)
   > def multirevs(ui, repo, arg, *args, **opts):
   >     """multirevs command"""
   >     pass
   > EOF
   $ echo "multirevs = multirevs.py" >> $HGRCPATH
 
   $ hg help multirevs
   Specifying Multiple Revisions
   """""""""""""""""""""""""""""
   
       When Mercurial accepts more than one revision, they may be specified
       individually, or provided as a topologically continuous range, separated
       by the ":" character.
   
       The syntax of range notation is [BEGIN]:[END], where BEGIN and END are
       revision identifiers. Both BEGIN and END are optional. If BEGIN is not
       specified, it defaults to revision number 0. If END is not specified, it
       defaults to the tip. The range ":" thus means "all revisions".
   
       If BEGIN is greater than END, revisions are treated in reverse order.
   
       A range acts as a closed interval. This means that a range of 3:5 gives 3,
       4 and 5. Similarly, a range of 9:6 gives 9, 8, 7, and 6.
   
   use "hg help -c multirevs" to see help for the multirevs command
 
 
 
 
 
 
   $ hg help -c multirevs
   hg multirevs ARG
   
   multirevs command
   
   (some details hidden, use --verbose to show complete help)
 
 
 
   $ hg multirevs
   hg multirevs: invalid arguments
   hg multirevs ARG
   
   multirevs command
   
   (use "hg multirevs -h" to show more help)
   [255]
 
 
 
   $ echo "multirevs = !" >> $HGRCPATH
 
 Issue811: Problem loading extensions twice (by site and by user)
 
   $ debugpath=`pwd`/debugissue811.py
   $ cat > debugissue811.py <<EOF
   > '''show all loaded extensions
   > '''
   > from mercurial import cmdutil, commands, extensions
   > cmdtable = {}
   > command = cmdutil.command(cmdtable)
   > @command('debugextensions', [], 'hg debugextensions', norepo=True)
   > def debugextensions(ui):
   >     "yet another debug command"
   >     ui.write("%s\n" % '\n'.join([x for x, y in extensions.extensions()]))
   > EOF
   $ cat <<EOF >> $HGRCPATH
   > debugissue811 = $debugpath
   > mq =
   > strip =
   > hgext.mq =
   > hgext/mq =
   > EOF
 
 Show extensions:
 (note that mq force load strip, also checking it's not loaded twice)
 
   $ hg debugextensions
   debugissue811
   strip
   mq
 
+For extensions, which name matches one of its commands, help
+message should ask '-v -e' to get list of built-in aliases
+along with extension help itself
+
+  $ mkdir $TESTTMP/d
+  $ cat > $TESTTMP/d/dodo.py <<EOF
+  > """
+  > This is an awesome 'dodo' extension. It does nothing and
+  > writes 'Foo foo'
+  > """
+  > from mercurial import cmdutil, commands
+  > cmdtable = {}
+  > command = cmdutil.command(cmdtable)
+  > @command('dodo', [], 'hg dodo')
+  > def dodo(ui, *args, **kwargs):
+  >     """Does nothing"""
+  >     ui.write("I do nothing. Yay\\n")
+  > @command('foofoo', [], 'hg foofoo')
+  > def foofoo(ui, *args, **kwargs):
+  >     """Writes 'Foo foo'"""
+  >     ui.write("Foo foo\\n")
+  > EOF
+  $ dodopath=$TESTTMP/d/dodo.py
+
+  $ echo "dodo = $dodopath" >> $HGRCPATH
+
+Make sure that user is asked to enter '-v -e' to get list of built-in aliases
+  $ hg help -e dodo
+  dodo extension -
+  
+  This is an awesome 'dodo' extension. It does nothing and writes 'Foo foo'
+  
+  list of commands:
+  
+   dodo          Does nothing
+   foofoo        Writes 'Foo foo'
+  
+  (use "hg help -v -e dodo" to show built-in aliases and global options)
+
+Make sure that '-v -e' prints list of built-in aliases along with
+extension help itself
+  $ hg help -v -e dodo
+  dodo extension -
+  
+  This is an awesome 'dodo' extension. It does nothing and writes 'Foo foo'
+  
+  list of commands:
+  
+   dodo          Does nothing
+   foofoo        Writes 'Foo foo'
+  
+  global options ([+] can be repeated):
+  
+   -R --repository REPO   repository root directory or name of overlay bundle
+                          file
+      --cwd DIR           change working directory
+   -y --noninteractive    do not prompt, automatically pick the first choice for
+                          all prompts
+   -q --quiet             suppress output
+   -v --verbose           enable additional output
+      --config CONFIG [+] set/override config option (use 'section.name=value')
+      --debug             enable debugging output
+      --debugger          start debugger
+      --encoding ENCODE   set the charset encoding (default: ascii)
+      --encodingmode MODE set the charset encoding mode (default: strict)
+      --traceback         always print a traceback on exception
+      --time              time how long the command takes
+      --profile           print command execution profile
+      --version           output version information and exit
+   -h --help              display help and exit
+      --hidden            consider hidden changesets
+
+Make sure that single '-v' option shows help and built-ins only for 'dodo' command
+  $ hg help -v dodo
+  hg dodo
+  
+  Does nothing
+  
+  (use "hg help -e dodo" to show help for the dodo extension)
+  
+  options:
+  
+    --mq operate on patch repository
+  
+  global options ([+] can be repeated):
+  
+   -R --repository REPO   repository root directory or name of overlay bundle
+                          file
+      --cwd DIR           change working directory
+   -y --noninteractive    do not prompt, automatically pick the first choice for
+                          all prompts
+   -q --quiet             suppress output
+   -v --verbose           enable additional output
+      --config CONFIG [+] set/override config option (use 'section.name=value')
+      --debug             enable debugging output
+      --debugger          start debugger
+      --encoding ENCODE   set the charset encoding (default: ascii)
+      --encodingmode MODE set the charset encoding mode (default: strict)
+      --traceback         always print a traceback on exception
+      --time              time how long the command takes
+      --profile           print command execution profile
+      --version           output version information and exit
+   -h --help              display help and exit
+      --hidden            consider hidden changesets
+
+In case when extension name doesn't match any of its commands,
+help message should ask for '-v' to get list of built-in aliases
+along with extension help
+  $ cat > $TESTTMP/d/dudu.py <<EOF
+  > """
+  > This is an awesome 'dudu' extension. It does something and
+  > also writes 'Beep beep'
+  > """
+  > from mercurial import cmdutil, commands
+  > cmdtable = {}
+  > command = cmdutil.command(cmdtable)
+  > @command('something', [], 'hg something')
+  > def something(ui, *args, **kwargs):
+  >     """Does something"""
+  >     ui.write("I do something. Yaaay\\n")
+  > @command('beep', [], 'hg beep')
+  > def beep(ui, *args, **kwargs):
+  >     """Writes 'Beep beep'"""
+  >     ui.write("Beep beep\\n")
+  > EOF
+  $ dudupath=$TESTTMP/d/dudu.py
+
+  $ echo "dudu = $dudupath" >> $HGRCPATH
+
+  $ hg help -e dudu
+  dudu extension -
+  
+  This is an awesome 'dudu' extension. It does something and also writes 'Beep
+  beep'
+  
+  list of commands:
+  
+   beep          Writes 'Beep beep'
+   something     Does something
+  
+  (use "hg help -v dudu" to show built-in aliases and global options)
+
+In case when extension name doesn't match any of its commands,
+help options '-v' and '-v -e' should be equivalent
+  $ hg help -v dudu
+  dudu extension -
+  
+  This is an awesome 'dudu' extension. It does something and also writes 'Beep
+  beep'
+  
+  list of commands:
+  
+   beep          Writes 'Beep beep'
+   something     Does something
+  
+  global options ([+] can be repeated):
+  
+   -R --repository REPO   repository root directory or name of overlay bundle
+                          file
+      --cwd DIR           change working directory
+   -y --noninteractive    do not prompt, automatically pick the first choice for
+                          all prompts
+   -q --quiet             suppress output
+   -v --verbose           enable additional output
+      --config CONFIG [+] set/override config option (use 'section.name=value')
+      --debug             enable debugging output
+      --debugger          start debugger
+      --encoding ENCODE   set the charset encoding (default: ascii)
+      --encodingmode MODE set the charset encoding mode (default: strict)
+      --traceback         always print a traceback on exception
+      --time              time how long the command takes
+      --profile           print command execution profile
+      --version           output version information and exit
+   -h --help              display help and exit
+      --hidden            consider hidden changesets
+
+  $ hg help -v -e dudu
+  dudu extension -
+  
+  This is an awesome 'dudu' extension. It does something and also writes 'Beep
+  beep'
+  
+  list of commands:
+  
+   beep          Writes 'Beep beep'
+   something     Does something
+  
+  global options ([+] can be repeated):
+  
+   -R --repository REPO   repository root directory or name of overlay bundle
+                          file
+      --cwd DIR           change working directory
+   -y --noninteractive    do not prompt, automatically pick the first choice for
+                          all prompts
+   -q --quiet             suppress output
+   -v --verbose           enable additional output
+      --config CONFIG [+] set/override config option (use 'section.name=value')
+      --debug             enable debugging output
+      --debugger          start debugger
+      --encoding ENCODE   set the charset encoding (default: ascii)
+      --encodingmode MODE set the charset encoding mode (default: strict)
+      --traceback         always print a traceback on exception
+      --time              time how long the command takes
+      --profile           print command execution profile
+      --version           output version information and exit
+   -h --help              display help and exit
+      --hidden            consider hidden changesets
+
 Disabled extension commands:
 
   $ ORGHGRCPATH=$HGRCPATH
   $ HGRCPATH=
   $ export HGRCPATH
   $ hg help email
   'email' is provided by the following extension:
   
       patchbomb     command to send changesets as (a series of) patch emails
   
   (use "hg help extensions" for information on enabling extensions)
 
 
   $ hg qdel
   hg: unknown command 'qdel'
   'qdelete' is provided by the following extension:
   
       mq            manage a stack of patches
   
   (use "hg help extensions" for information on enabling extensions)
   [255]
 
 
   $ hg churn
   hg: unknown command 'churn'
   'churn' is provided by the following extension:
   
       churn         command to display statistics about repository history
   
   (use "hg help extensions" for information on enabling extensions)
   [255]
 
 
 
 Disabled extensions:
 
   $ hg help churn
   churn extension - command to display statistics about repository history
   
   (use "hg help extensions" for information on enabling extensions)
 
   $ hg help patchbomb
   patchbomb extension - command to send changesets as (a series of) patch emails
   
   (use "hg help extensions" for information on enabling extensions)
 
 
 Broken disabled extension and command:
 
   $ mkdir hgext
   $ echo > hgext/__init__.py
   $ cat > hgext/broken.py <<EOF
   > "broken extension'
   > EOF
   $ cat > path.py <<EOF
   > import os, sys
   > sys.path.insert(0, os.environ['HGEXTPATH'])
   > EOF
   $ HGEXTPATH=`pwd`
   $ export HGEXTPATH
 
   $ hg --config extensions.path=./path.py help broken
   broken extension - (no help text available)
   
   (use "hg help extensions" for information on enabling extensions)
 
 
   $ cat > hgext/forest.py <<EOF
   > cmdtable = None
   > EOF
   $ hg --config extensions.path=./path.py help foo > /dev/null
   warning: error finding commands in $TESTTMP/hgext/forest.py (glob)
   abort: no such help topic: foo
   (try "hg help --keyword foo")
   [255]
 
   $ cat > throw.py <<EOF
   > from mercurial import cmdutil, commands
   > cmdtable = {}
   > command = cmdutil.command(cmdtable)
   > class Bogon(Exception): pass
   > @command('throw', [], 'hg throw', norepo=True)
   > def throw(ui, **opts):
   >     """throws an exception"""
   >     raise Bogon()
   > EOF
 No declared supported version, extension complains:
   $ hg --config extensions.throw=throw.py throw 2>&1 | egrep '^\*\*'
   ** Unknown exception encountered with possibly-broken third-party extension throw
   ** which supports versions unknown of Mercurial.
   ** Please disable throw and try your action again.
   ** If that fixes the bug please report it to the extension author.
   ** Python * (glob)
   ** Mercurial Distributed SCM * (glob)
   ** Extensions loaded: throw
 empty declaration of supported version, extension complains:
   $ echo "testedwith = ''" >> throw.py
   $ hg --config extensions.throw=throw.py throw 2>&1 | egrep '^\*\*'
   ** Unknown exception encountered with possibly-broken third-party extension throw
   ** which supports versions unknown of Mercurial.
   ** Please disable throw and try your action again.
   ** If that fixes the bug please report it to the extension author.
   ** Python * (glob)
   ** Mercurial Distributed SCM (*) (glob)
   ** Extensions loaded: throw
 If the extension specifies a buglink, show that:
   $ echo 'buglink = "http://example.com/bts"' >> throw.py
   $ rm -f throw.pyc throw.pyo
   $ hg --config extensions.throw=throw.py throw 2>&1 | egrep '^\*\*'
   ** Unknown exception encountered with possibly-broken third-party extension throw
   ** which supports versions unknown of Mercurial.
   ** Please disable throw and try your action again.
   ** If that fixes the bug please report it to http://example.com/bts
   ** Python * (glob)
   ** Mercurial Distributed SCM (*) (glob)
   ** Extensions loaded: throw
 If the extensions declare outdated versions, accuse the older extension first:
   $ echo "from mercurial import util" >> older.py
   $ echo "util.version = lambda:'2.2'" >> older.py
   $ echo "testedwith = '1.9.3'" >> older.py
   $ echo "testedwith = '2.1.1'" >> throw.py
   $ rm -f throw.pyc throw.pyo
   $ hg --config extensions.throw=throw.py --config extensions.older=older.py \
   >   throw 2>&1 | egrep '^\*\*'
   ** Unknown exception encountered with possibly-broken third-party extension older
   ** which supports versions 1.9.3 of Mercurial.
   ** Please disable older and try your action again.
   ** If that fixes the bug please report it to the extension author.
   ** Python * (glob)
   ** Mercurial Distributed SCM (version 2.2)
   ** Extensions loaded: throw, older
 One extension only tested with older, one only with newer versions:
   $ echo "util.version = lambda:'2.1.0'" >> older.py
   $ rm -f older.pyc older.pyo
   $ hg --config extensions.throw=throw.py --config extensions.older=older.py \
   >   throw 2>&1 | egrep '^\*\*'
   ** Unknown exception encountered with possibly-broken third-party extension older
   ** which supports versions 1.9.3 of Mercurial.
   ** Please disable older and try your action again.
   ** If that fixes the bug please report it to the extension author.
   ** Python * (glob)
   ** Mercurial Distributed SCM (version 2.1.0)
   ** Extensions loaded: throw, older
 Older extension is tested with current version, the other only with newer:
   $ echo "util.version = lambda:'1.9.3'" >> older.py
   $ rm -f older.pyc older.pyo
   $ hg --config extensions.throw=throw.py --config extensions.older=older.py \
   >   throw 2>&1 | egrep '^\*\*'
   ** Unknown exception encountered with possibly-broken third-party extension throw
   ** which supports versions 2.1.1 of Mercurial.
   ** Please disable throw and try your action again.
   ** If that fixes the bug please report it to http://example.com/bts
   ** Python * (glob)
   ** Mercurial Distributed SCM (version 1.9.3)
   ** Extensions loaded: throw, older
 
 Declare the version as supporting this hg version, show regular bts link:
   $ hgver=`$PYTHON -c 'from mercurial import util; print util.version().split("+")[0]'`
   $ echo 'testedwith = """'"$hgver"'"""' >> throw.py
   $ rm -f throw.pyc throw.pyo
   $ hg --config extensions.throw=throw.py throw 2>&1 | egrep '^\*\*'
   ** unknown exception encountered, please report by visiting
   ** http://mercurial.selenic.com/wiki/BugTracker
   ** Python * (glob)
   ** Mercurial Distributed SCM (*) (glob)
   ** Extensions loaded: throw
 
 Test version number support in 'hg version':
   $ echo '__version__ = (1, 2, 3)' >> throw.py
   $ rm -f throw.pyc throw.pyo
   $ hg version -v
   Mercurial Distributed SCM (version *) (glob)
   (see http://mercurial.selenic.com for more information)
   
   Copyright (C) 2005-* Matt Mackall and others (glob)
   This is free software; see the source for copying conditions. There is NO
   warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
   
   Enabled extensions:
   
 
   $ hg version -v --config extensions.throw=throw.py
   Mercurial Distributed SCM (version *) (glob)
   (see http://mercurial.selenic.com for more information)
   
   Copyright (C) 2005-* Matt Mackall and others (glob)
   This is free software; see the source for copying conditions. There is NO
   warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
   
   Enabled extensions:
   
     throw  1.2.3
   $ echo 'getversion = lambda: "1.twentythree"' >> throw.py
   $ rm -f throw.pyc throw.pyo
   $ hg version -v --config extensions.throw=throw.py
   Mercurial Distributed SCM (version *) (glob)
   (see http://mercurial.selenic.com for more information)
   
   Copyright (C) 2005-* Matt Mackall and others (glob)
   This is free software; see the source for copying conditions. There is NO
   warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
   
   Enabled extensions:
   
     throw  1.twentythree
 
 Restore HGRCPATH
 
   $ HGRCPATH=$ORGHGRCPATH
   $ export HGRCPATH
 
 Commands handling multiple repositories at a time should invoke only
 "reposetup()" of extensions enabling in the target repository.
 
   $ mkdir reposetup-test
   $ cd reposetup-test
 
   $ cat > $TESTTMP/reposetuptest.py <<EOF
   > from mercurial import extensions
   > def reposetup(ui, repo):
   >     ui.write('reposetup() for %s\n' % (repo.root))
   > EOF
   $ hg init src
   $ echo a > src/a
   $ hg -R src commit -Am '#0 at src/a'
   adding a
   $ echo '[extensions]' >> src/.hg/hgrc
   $ echo '# enable extension locally' >> src/.hg/hgrc
   $ echo "reposetuptest = $TESTTMP/reposetuptest.py" >> src/.hg/hgrc
   $ hg -R src status
   reposetup() for $TESTTMP/reposetup-test/src (glob)
 
   $ hg clone -U src clone-dst1
   reposetup() for $TESTTMP/reposetup-test/src (glob)
   $ hg init push-dst1
   $ hg -q -R src push push-dst1
   reposetup() for $TESTTMP/reposetup-test/src (glob)
   $ hg init pull-src1
   $ hg -q -R pull-src1 pull src
   reposetup() for $TESTTMP/reposetup-test/src (glob)
 
   $ cat <<EOF >> $HGRCPATH
   > [extensions]
   > # disable extension globally and explicitly
   > reposetuptest = !
   > EOF
   $ hg clone -U src clone-dst2
   reposetup() for $TESTTMP/reposetup-test/src (glob)
   $ hg init push-dst2
   $ hg -q -R src push push-dst2
   reposetup() for $TESTTMP/reposetup-test/src (glob)
   $ hg init pull-src2
   $ hg -q -R pull-src2 pull src
   reposetup() for $TESTTMP/reposetup-test/src (glob)
 
   $ cat <<EOF >> $HGRCPATH
   > [extensions]
   > # enable extension globally
   > reposetuptest = $TESTTMP/reposetuptest.py
   > EOF
   $ hg clone -U src clone-dst3
   reposetup() for $TESTTMP/reposetup-test/src (glob)
   reposetup() for $TESTTMP/reposetup-test/clone-dst3 (glob)
   $ hg init push-dst3
   reposetup() for $TESTTMP/reposetup-test/push-dst3 (glob)
   $ hg -q -R src push push-dst3
   reposetup() for $TESTTMP/reposetup-test/src (glob)
   reposetup() for $TESTTMP/reposetup-test/push-dst3 (glob)
   $ hg init pull-src3
   reposetup() for $TESTTMP/reposetup-test/pull-src3 (glob)
   $ hg -q -R pull-src3 pull src
   reposetup() for $TESTTMP/reposetup-test/pull-src3 (glob)
   reposetup() for $TESTTMP/reposetup-test/src (glob)
 
   $ echo '[extensions]' >> src/.hg/hgrc
   $ echo '# disable extension locally' >> src/.hg/hgrc
   $ echo 'reposetuptest = !' >> src/.hg/hgrc
   $ hg clone -U src clone-dst4
   reposetup() for $TESTTMP/reposetup-test/clone-dst4 (glob)
   $ hg init push-dst4
   reposetup() for $TESTTMP/reposetup-test/push-dst4 (glob)
   $ hg -q -R src push push-dst4
   reposetup() for $TESTTMP/reposetup-test/push-dst4 (glob)
   $ hg init pull-src4
   reposetup() for $TESTTMP/reposetup-test/pull-src4 (glob)
   $ hg -q -R pull-src4 pull src
   reposetup() for $TESTTMP/reposetup-test/pull-src4 (glob)
 
 disabling in command line overlays with all configuration
   $ hg --config extensions.reposetuptest=! clone -U src clone-dst5
   $ hg --config extensions.reposetuptest=! init push-dst5
   $ hg --config extensions.reposetuptest=! -q -R src push push-dst5
   $ hg --config extensions.reposetuptest=! init pull-src5
   $ hg --config extensions.reposetuptest=! -q -R pull-src5 pull src
 
   $ cat <<EOF >> $HGRCPATH
   > [extensions]
   > # disable extension globally and explicitly
   > reposetuptest = !
   > EOF
   $ hg init parent
   $ hg init parent/sub1
   $ echo 1 > parent/sub1/1
   $ hg -R parent/sub1 commit -Am '#0 at parent/sub1'
   adding 1
   $ hg init parent/sub2
   $ hg init parent/sub2/sub21
   $ echo 21 > parent/sub2/sub21/21
   $ hg -R parent/sub2/sub21 commit -Am '#0 at parent/sub2/sub21'
   adding 21
   $ cat > parent/sub2/.hgsub <<EOF
   > sub21 = sub21
   > EOF
   $ hg -R parent/sub2 commit -Am '#0 at parent/sub2'
   adding .hgsub
   $ hg init parent/sub3
   $ echo 3 > parent/sub3/3
   $ hg -R parent/sub3 commit -Am '#0 at parent/sub3'
   adding 3
   $ cat > parent/.hgsub <<EOF
   > sub1 = sub1
   > sub2 = sub2
   > sub3 = sub3
   > EOF
   $ hg -R parent commit -Am '#0 at parent'
   adding .hgsub
   $ echo '[extensions]' >> parent/.hg/hgrc
   $ echo '# enable extension locally' >> parent/.hg/hgrc
   $ echo "reposetuptest = $TESTTMP/reposetuptest.py" >> parent/.hg/hgrc
   $ cp parent/.hg/hgrc parent/sub2/.hg/hgrc
   $ hg -R parent status -S -A
   reposetup() for $TESTTMP/reposetup-test/parent (glob)
   reposetup() for $TESTTMP/reposetup-test/parent/sub2 (glob)
   C .hgsub
   C .hgsubstate
   C sub1/1
   C sub2/.hgsub
   C sub2/.hgsubstate
   C sub2/sub21/21
   C sub3/3
 
   $ cd ..