mercurial/help.py
author Augie Fackler <augie@google.com>
Sun, 17 May 2015 21:12:33 -0400
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child 25660 328739ea70c3
permissions -rw-r--r--
run-tests: introduce PYTHON3 boolean constant (issue4668) This will avoid open-coding lots of version_info checks later in the file.
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# help.py - help data for mercurial
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#
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# Copyright 2006 Matt Mackall <mpm@selenic.com>
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#
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# This software may be used and distributed according to the terms of the
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# GNU General Public License version 2 or any later version.
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from i18n import gettext, _
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import itertools, os, textwrap
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import error
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import extensions, revset, fileset, templatekw, templatefilters, filemerge
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import templater
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import encoding, util, minirst
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import cmdutil
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import hgweb.webcommands as webcommands
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def listexts(header, exts, indent=1, showdeprecated=False):
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    '''return a text listing of the given extensions'''
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    rst = []
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    if exts:
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        rst.append('\n%s\n\n' % header)
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        for name, desc in sorted(exts.iteritems()):
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            if '(DEPRECATED)' in desc and not showdeprecated:
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                continue
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            rst.append('%s:%s: %s\n' % (' ' * indent, name, desc))
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    return rst
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def extshelp():
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    rst = loaddoc('extensions')().splitlines(True)
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    rst.extend(listexts(
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        _('enabled extensions:'), extensions.enabled(), showdeprecated=True))
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    rst.extend(listexts(_('disabled extensions:'), extensions.disabled()))
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    doc = ''.join(rst)
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    return doc
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def optrst(header, options, verbose):
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    data = []
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    multioccur = False
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    for option in options:
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        if len(option) == 5:
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            shortopt, longopt, default, desc, optlabel = option
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        else:
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            shortopt, longopt, default, desc = option
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            optlabel = _("VALUE") # default label
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        if not verbose and ("DEPRECATED" in desc or _("DEPRECATED") in desc or
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                            "EXPERIMENTAL" in desc or
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                            _("EXPERIMENTAL") in desc):
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            continue
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        so = ''
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        if shortopt:
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            so = '-' + shortopt
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        lo = '--' + longopt
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        if default:
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            desc += _(" (default: %s)") % default
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        if isinstance(default, list):
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            lo += " %s [+]" % optlabel
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            multioccur = True
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        elif (default is not None) and not isinstance(default, bool):
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            lo += " %s" % optlabel
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        data.append((so, lo, desc))
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    if multioccur:
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        header += (_(" ([+] can be repeated)"))
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    rst = ['\n%s:\n\n' % header]
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    rst.extend(minirst.maketable(data, 1))
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    return ''.join(rst)
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def indicateomitted(rst, omitted, notomitted=None):
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    rst.append('\n\n.. container:: omitted\n\n    %s\n\n' % omitted)
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    if notomitted:
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        rst.append('\n\n.. container:: notomitted\n\n    %s\n\n' % notomitted)
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def topicmatch(kw):
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    """Return help topics matching kw.
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    Returns {'section': [(name, summary), ...], ...} where section is
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    one of topics, commands, extensions, or extensioncommands.
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    """
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    kw = encoding.lower(kw)
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    def lowercontains(container):
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        return kw in encoding.lower(container)  # translated in helptable
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    results = {'topics': [],
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               'commands': [],
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               'extensions': [],
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               'extensioncommands': [],
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               }
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    for names, header, doc in helptable:
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        # Old extensions may use a str as doc.
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        if (sum(map(lowercontains, names))
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            or lowercontains(header)
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            or (callable(doc) and lowercontains(doc()))):
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            results['topics'].append((names[0], header))
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    import commands # avoid cycle
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    for cmd, entry in commands.table.iteritems():
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        if len(entry) == 3:
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            summary = entry[2]
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        else:
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            summary = ''
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        # translate docs *before* searching there
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        docs = _(getattr(entry[0], '__doc__', None)) or ''
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        if kw in cmd or lowercontains(summary) or lowercontains(docs):
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            doclines = docs.splitlines()
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            if doclines:
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                summary = doclines[0]
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            cmdname = cmd.split('|')[0].lstrip('^')
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            results['commands'].append((cmdname, summary))
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    for name, docs in itertools.chain(
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        extensions.enabled(False).iteritems(),
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        extensions.disabled().iteritems()):
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        # extensions.load ignores the UI argument
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        mod = extensions.load(None, name, '')
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        name = name.split('.')[-1]
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        if lowercontains(name) or lowercontains(docs):
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            # extension docs are already translated
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            results['extensions'].append((name, docs.splitlines()[0]))
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        for cmd, entry in getattr(mod, 'cmdtable', {}).iteritems():
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            if kw in cmd or (len(entry) > 2 and lowercontains(entry[2])):
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                cmdname = cmd.split('|')[0].lstrip('^')
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                if entry[0].__doc__:
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                    cmddoc = gettext(entry[0].__doc__).splitlines()[0]
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                else:
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                    cmddoc = _('(no help text available)')
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                results['extensioncommands'].append((cmdname, cmddoc))
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    return results
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   131
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def loaddoc(topic):
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    """Return a delayed loader for help/topic.txt."""
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    def loader():
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        docdir = os.path.join(util.datapath, 'help')
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        path = os.path.join(docdir, topic + ".txt")
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        doc = gettext(util.readfile(path))
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        for rewriter in helphooks.get(topic, []):
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            doc = rewriter(topic, doc)
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        return doc
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   142
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    return loader
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   144
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   145
helptable = sorted([
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    (["config", "hgrc"], _("Configuration Files"), loaddoc('config')),
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    (["dates"], _("Date Formats"), loaddoc('dates')),
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    (["patterns"], _("File Name Patterns"), loaddoc('patterns')),
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    (['environment', 'env'], _('Environment Variables'),
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     loaddoc('environment')),
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    (['revisions', 'revs'], _('Specifying Single Revisions'),
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     loaddoc('revisions')),
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    (['multirevs', 'mrevs'], _('Specifying Multiple Revisions'),
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     loaddoc('multirevs')),
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    (['revsets', 'revset'], _("Specifying Revision Sets"), loaddoc('revsets')),
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    (['filesets', 'fileset'], _("Specifying File Sets"), loaddoc('filesets')),
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    (['diffs'], _('Diff Formats'), loaddoc('diffs')),
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2be2a070f294 help: add 'mergetools' alias for the 'merge-tools' help topic
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    (['merge-tools', 'mergetools'], _('Merge Tools'), loaddoc('merge-tools')),
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770190bff625 help: add reference to template help (issue3413)
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   159
    (['templating', 'templates', 'template', 'style'], _('Template Usage'),
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     loaddoc('templates')),
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    (['urls'], _('URL Paths'), loaddoc('urls')),
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    (["extensions"], _("Using Additional Features"), extshelp),
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    (["subrepos", "subrepo"], _("Subrepositories"), loaddoc('subrepos')),
17321
f3fd9d6802b7 help: fix helptable indentation
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   164
    (["hgweb"], _("Configuring hgweb"), loaddoc('hgweb')),
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   165
    (["glossary"], _("Glossary"), loaddoc('glossary')),
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   166
    (["hgignore", "ignore"], _("Syntax for Mercurial Ignore Files"),
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   167
     loaddoc('hgignore')),
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   168
    (["phases"], _("Working with Phases"), loaddoc('phases')),
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   169
])
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   170
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# Map topics to lists of callable taking the current topic help and
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# returning the updated version
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helphooks = {}
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   174
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def addtopichook(topic, rewriter):
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    helphooks.setdefault(topic, []).append(rewriter)
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def makeitemsdoc(topic, doc, marker, items, dedent=False):
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    """Extract docstring from the items key to function mapping, build a
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    .single documentation block and use it to overwrite the marker in doc
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    """
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    entries = []
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    for name in sorted(items):
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        text = (items[name].__doc__ or '').rstrip()
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        if not text:
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            continue
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        text = gettext(text)
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        if dedent:
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            text = textwrap.dedent(text)
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        lines = text.splitlines()
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        doclines = [(lines[0])]
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        for l in lines[1:]:
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            # Stop once we find some Python doctest
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   194
            if l.strip().startswith('>>>'):
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                break
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            if dedent:
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                doclines.append(l.rstrip())
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            else:
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                doclines.append('  ' + l.strip())
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        entries.append('\n'.join(doclines))
13593
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    entries = '\n\n'.join(entries)
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    return doc.replace(marker, entries)
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def addtopicsymbols(topic, marker, symbols, dedent=False):
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    def add(topic, doc):
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   206
        return makeitemsdoc(topic, doc, marker, symbols, dedent=dedent)
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    addtopichook(topic, add)
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   208
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addtopicsymbols('filesets', '.. predicatesmarker', fileset.symbols)
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addtopicsymbols('merge-tools', '.. internaltoolsmarker',
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                filemerge.internalsdoc)
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addtopicsymbols('revsets', '.. predicatesmarker', revset.symbols)
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293dd81e4601 templatekw/help: document the {parents} keyword
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addtopicsymbols('templates', '.. keywordsmarker', templatekw.dockeywords)
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addtopicsymbols('templates', '.. filtersmarker', templatefilters.filters)
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76c0b4cfa039 help: populate template functions via docstrings
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addtopicsymbols('templates', '.. functionsmarker', templater.funcs)
24098
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   216
addtopicsymbols('hgweb', '.. webcommandsmarker', webcommands.commands,
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                dedent=True)
18746
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   219
def help_(ui, name, unknowncmd=False, full=True, **opts):
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    '''
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   221
    Generate the help for 'name' as unformatted restructured text. If
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   222
    'name' is None, describe the commands available.
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   223
    '''
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   224
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   225
    import commands # avoid cycle
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   226
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   227
    def helpcmd(name):
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        try:
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   229
            aliases, entry = cmdutil.findcmd(name, commands.table,
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   230
                                             strict=unknowncmd)
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   231
        except error.AmbiguousCommand, inst:
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   232
            # py3k fix: except vars can't be used outside the scope of the
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   233
            # except block, nor can be used inside a lambda. python issue4617
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   234
            prefix = inst.args[0]
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   235
            select = lambda c: c.lstrip('^').startswith(prefix)
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   236
            rst = helplist(select)
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   237
            return rst
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   238
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   239
        rst = []
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   240
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   241
        # check if it's an invalid alias and display its error if it is
22160
645457f73aa6 alias: keep error message in "badalias" so that help can see it
Yuya Nishihara <yuya@tcha.org>
parents: 22118
diff changeset
   242
        if getattr(entry[0], 'badalias', None):
22162
7ada34676db8 help: provide help of bad alias without executing aliascmd()
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diff changeset
   243
            rst.append(entry[0].badalias + '\n')
7ada34676db8 help: provide help of bad alias without executing aliascmd()
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diff changeset
   244
            if entry[0].unknowncmd:
7ada34676db8 help: provide help of bad alias without executing aliascmd()
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diff changeset
   245
                try:
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                    rst.extend(helpextcmd(entry[0].cmdname))
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                except error.UnknownCommand:
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                    pass
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            return rst
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        # synopsis
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        if len(entry) > 2:
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            if entry[2].startswith('hg'):
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                rst.append("%s\n" % entry[2])
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            else:
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                rst.append('hg %s %s\n' % (aliases[0], entry[2]))
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        else:
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            rst.append('hg %s\n' % aliases[0])
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        # aliases
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        if full and not ui.quiet and len(aliases) > 1:
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            rst.append(_("\naliases: %s\n") % ', '.join(aliases[1:]))
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        rst.append('\n')
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        # description
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        doc = gettext(entry[0].__doc__)
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        if not doc:
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            doc = _("(no help text available)")
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        if util.safehasattr(entry[0], 'definition'):  # aliased command
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            if entry[0].definition.startswith('!'):  # shell alias
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                doc = _('shell alias for::\n\n    %s') % entry[0].definition[1:]
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            else:
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                doc = _('alias for: hg %s\n\n%s') % (entry[0].definition, doc)
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        doc = doc.splitlines(True)
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        if ui.quiet or not full:
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            rst.append(doc[0])
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        else:
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            rst.extend(doc)
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        rst.append('\n')
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        # check if this command shadows a non-trivial (multi-line)
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        # extension help text
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        try:
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            mod = extensions.find(name)
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            doc = gettext(mod.__doc__) or ''
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   285
            if '\n' in doc.strip():
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   286
                msg = _('(use "hg help -e %s" to show help for '
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                        'the %s extension)') % (name, name)
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                rst.append('\n%s\n' % msg)
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   289
        except KeyError:
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   290
            pass
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   291
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        # options
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        if not ui.quiet and entry[1]:
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   294
            rst.append(optrst(_("options"), entry[1], ui.verbose))
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   295
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   296
        if ui.verbose:
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            rst.append(optrst(_("global options"),
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   298
                              commands.globalopts, ui.verbose))
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   299
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   300
        if not ui.verbose:
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   301
            if not full:
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   302
                rst.append(_('\n(use "hg %s -h" to show more help)\n')
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   303
                           % name)
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   304
            elif not ui.quiet:
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   305
                rst.append(_('\n(some details hidden, use --verbose '
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   306
                               'to show complete help)'))
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   307
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   308
        return rst
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   309
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   310
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   311
    def helplist(select=None):
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        # list of commands
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   313
        if name == "shortlist":
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   314
            header = _('basic commands:\n\n')
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   315
        elif name == "debug":
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   316
            header = _('debug commands (internal and unsupported):\n\n')
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   317
        else:
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   318
            header = _('list of commands:\n\n')
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   319
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   320
        h = {}
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   321
        cmds = {}
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   322
        for c, e in commands.table.iteritems():
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   323
            f = c.split("|", 1)[0]
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   324
            if select and not select(f):
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   325
                continue
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   326
            if (not select and name != 'shortlist' and
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   327
                e[0].__module__ != commands.__name__):
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   328
                continue
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   329
            if name == "shortlist" and not f.startswith("^"):
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   330
                continue
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   331
            f = f.lstrip("^")
20822
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   332
            if not ui.debugflag and f.startswith("debug") and name != "debug":
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   333
                continue
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   334
            doc = e[0].__doc__
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   335
            if doc and 'DEPRECATED' in doc and not ui.verbose:
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   336
                continue
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   337
            doc = gettext(doc)
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   338
            if not doc:
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   339
                doc = _("(no help text available)")
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   340
            h[f] = doc.splitlines()[0].rstrip()
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   341
            cmds[f] = c.lstrip("^")
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   342
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   343
        rst = []
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   344
        if not h:
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   345
            if not ui.quiet:
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   346
                rst.append(_('no commands defined\n'))
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   347
            return rst
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   348
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   349
        if not ui.quiet:
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   350
            rst.append(header)
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   351
        fns = sorted(h)
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   352
        for f in fns:
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   353
            if ui.verbose:
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   354
                commacmds = cmds[f].replace("|",", ")
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   355
                rst.append(" :%s: %s\n" % (commacmds, h[f]))
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   356
            else:
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   357
                rst.append(' :%s: %s\n' % (f, h[f]))
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diff changeset
   358
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   359
        if not name:
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   360
            exts = listexts(_('enabled extensions:'), extensions.enabled())
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   361
            if exts:
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   362
                rst.append('\n')
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   363
                rst.extend(exts)
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diff changeset
   364
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   365
            rst.append(_("\nadditional help topics:\n\n"))
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   366
            topics = []
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   367
            for names, header, doc in helptable:
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   368
                topics.append((names[0], header))
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   369
            for t, desc in topics:
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   370
                rst.append(" :%s: %s\n" % (t, desc))
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   371
22115
8465625f7364 help: refactor helplist optlist mess
Matt Mackall <mpm@selenic.com>
parents: 22114
diff changeset
   372
        if ui.quiet:
8465625f7364 help: refactor helplist optlist mess
Matt Mackall <mpm@selenic.com>
parents: 22114
diff changeset
   373
            pass
8465625f7364 help: refactor helplist optlist mess
Matt Mackall <mpm@selenic.com>
parents: 22114
diff changeset
   374
        elif ui.verbose:
22116
161085f87b95 help: roll option list header into option formatter
Matt Mackall <mpm@selenic.com>
parents: 22115
diff changeset
   375
            rst.append('\n%s\n' % optrst(_("global options"),
161085f87b95 help: roll option list header into option formatter
Matt Mackall <mpm@selenic.com>
parents: 22115
diff changeset
   376
                                         commands.globalopts, ui.verbose))
22115
8465625f7364 help: refactor helplist optlist mess
Matt Mackall <mpm@selenic.com>
parents: 22114
diff changeset
   377
            if name == 'shortlist':
22118
9a299c39de01 help: normalize helplist hints
Matt Mackall <mpm@selenic.com>
parents: 22117
diff changeset
   378
                rst.append(_('\n(use "hg help" for the full list '
9a299c39de01 help: normalize helplist hints
Matt Mackall <mpm@selenic.com>
parents: 22117
diff changeset
   379
                             'of commands)\n'))
22115
8465625f7364 help: refactor helplist optlist mess
Matt Mackall <mpm@selenic.com>
parents: 22114
diff changeset
   380
        else:
8465625f7364 help: refactor helplist optlist mess
Matt Mackall <mpm@selenic.com>
parents: 22114
diff changeset
   381
            if name == 'shortlist':
22118
9a299c39de01 help: normalize helplist hints
Matt Mackall <mpm@selenic.com>
parents: 22117
diff changeset
   382
                rst.append(_('\n(use "hg help" for the full list of commands '
9a299c39de01 help: normalize helplist hints
Matt Mackall <mpm@selenic.com>
parents: 22117
diff changeset
   383
                             'or "hg -v" for details)\n'))
22115
8465625f7364 help: refactor helplist optlist mess
Matt Mackall <mpm@selenic.com>
parents: 22114
diff changeset
   384
            elif name and not full:
22118
9a299c39de01 help: normalize helplist hints
Matt Mackall <mpm@selenic.com>
parents: 22117
diff changeset
   385
                rst.append(_('\n(use "hg help %s" to show the full help '
9a299c39de01 help: normalize helplist hints
Matt Mackall <mpm@selenic.com>
parents: 22117
diff changeset
   386
                             'text)\n') % name)
23624
861ddedfb402 help: suggest '-v -e' to get built-in aliases for extensions (issue4461)
Chingis Dugarzhapov <chingis.dug@gmail.com>
parents: 22637
diff changeset
   387
            elif name and cmds and name in cmds.keys():
861ddedfb402 help: suggest '-v -e' to get built-in aliases for extensions (issue4461)
Chingis Dugarzhapov <chingis.dug@gmail.com>
parents: 22637
diff changeset
   388
                rst.append(_('\n(use "hg help -v -e %s" to show built-in '
861ddedfb402 help: suggest '-v -e' to get built-in aliases for extensions (issue4461)
Chingis Dugarzhapov <chingis.dug@gmail.com>
parents: 22637
diff changeset
   389
                             'aliases and global options)\n') % name)
18746
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   390
            else:
22118
9a299c39de01 help: normalize helplist hints
Matt Mackall <mpm@selenic.com>
parents: 22117
diff changeset
   391
                rst.append(_('\n(use "hg help -v%s" to show built-in aliases '
9a299c39de01 help: normalize helplist hints
Matt Mackall <mpm@selenic.com>
parents: 22117
diff changeset
   392
                             'and global options)\n')
9a299c39de01 help: normalize helplist hints
Matt Mackall <mpm@selenic.com>
parents: 22117
diff changeset
   393
                           % (name and " " + name or ""))
18746
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   394
        return rst
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   395
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   396
    def helptopic(name):
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   397
        for names, header, doc in helptable:
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   398
            if name in names:
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   399
                break
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   400
        else:
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   401
            raise error.UnknownCommand(name)
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   402
18748
6e676fb6ea44 help: use a full header for topic titles
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 18746
diff changeset
   403
        rst = [minirst.section(header)]
6e676fb6ea44 help: use a full header for topic titles
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 18746
diff changeset
   404
18746
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   405
        # description
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   406
        if not doc:
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   407
            rst.append("    %s\n" % _("(no help text available)"))
21796
8225bb1f0ad3 help: restore use of callable() since it was readded in Python 3.2
Augie Fackler <raf@durin42.com>
parents: 21289
diff changeset
   408
        if callable(doc):
18746
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   409
            rst += ["    %s\n" % l for l in doc().splitlines()]
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   410
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   411
        if not ui.verbose:
22114
3ba1d7ca3dfd help: normalize topic and extension verbose hints
Matt Mackall <mpm@selenic.com>
parents: 22113
diff changeset
   412
            omitted = _('(some details hidden, use --verbose'
3ba1d7ca3dfd help: normalize topic and extension verbose hints
Matt Mackall <mpm@selenic.com>
parents: 22113
diff changeset
   413
                         ' to show complete help)')
18746
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   414
            indicateomitted(rst, omitted)
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   415
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   416
        try:
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   417
            cmdutil.findcmd(name, commands.table)
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   418
            rst.append(_('\nuse "hg help -c %s" to see help for '
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   419
                       'the %s command\n') % (name, name))
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   420
        except error.UnknownCommand:
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   421
            pass
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   422
        return rst
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   423
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   424
    def helpext(name):
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   425
        try:
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   426
            mod = extensions.find(name)
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   427
            doc = gettext(mod.__doc__) or _('no help text available')
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   428
        except KeyError:
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   429
            mod = None
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   430
            doc = extensions.disabledext(name)
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   431
            if not doc:
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   432
                raise error.UnknownCommand(name)
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   433
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   434
        if '\n' not in doc:
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   435
            head, tail = doc, ""
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   436
        else:
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   437
            head, tail = doc.split('\n', 1)
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   438
        rst = [_('%s extension - %s\n\n') % (name.split('.')[-1], head)]
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   439
        if tail:
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   440
            rst.extend(tail.splitlines(True))
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   441
            rst.append('\n')
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   442
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   443
        if not ui.verbose:
22114
3ba1d7ca3dfd help: normalize topic and extension verbose hints
Matt Mackall <mpm@selenic.com>
parents: 22113
diff changeset
   444
            omitted = _('(some details hidden, use --verbose'
3ba1d7ca3dfd help: normalize topic and extension verbose hints
Matt Mackall <mpm@selenic.com>
parents: 22113
diff changeset
   445
                         ' to show complete help)')
18746
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   446
            indicateomitted(rst, omitted)
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   447
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   448
        if mod:
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   449
            try:
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   450
                ct = mod.cmdtable
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   451
            except AttributeError:
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   452
                ct = {}
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   453
            modcmds = set([c.split('|', 1)[0] for c in ct])
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   454
            rst.extend(helplist(modcmds.__contains__))
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   455
        else:
22113
2d2cb5e50095 help: normalize hint about enabling extensions
Matt Mackall <mpm@selenic.com>
parents: 22112
diff changeset
   456
            rst.append(_('(use "hg help extensions" for information on enabling'
2d2cb5e50095 help: normalize hint about enabling extensions
Matt Mackall <mpm@selenic.com>
parents: 22112
diff changeset
   457
                       ' extensions)\n'))
18746
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   458
        return rst
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   459
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   460
    def helpextcmd(name):
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   461
        cmd, ext, mod = extensions.disabledcmd(ui, name,
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   462
                                               ui.configbool('ui', 'strict'))
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   463
        doc = gettext(mod.__doc__).splitlines()[0]
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   464
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   465
        rst = listexts(_("'%s' is provided by the following "
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   466
                              "extension:") % cmd, {ext: doc}, indent=4)
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   467
        rst.append('\n')
22113
2d2cb5e50095 help: normalize hint about enabling extensions
Matt Mackall <mpm@selenic.com>
parents: 22112
diff changeset
   468
        rst.append(_('(use "hg help extensions" for information on enabling '
2d2cb5e50095 help: normalize hint about enabling extensions
Matt Mackall <mpm@selenic.com>
parents: 22112
diff changeset
   469
                   'extensions)\n'))
18746
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   470
        return rst
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   471
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   472
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   473
    rst = []
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   474
    kw = opts.get('keyword')
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   475
    if kw:
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   476
        matches = topicmatch(kw)
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   477
        for t, title in (('topics', _('Topics')),
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   478
                         ('commands', _('Commands')),
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   479
                         ('extensions', _('Extensions')),
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   480
                         ('extensioncommands', _('Extension Commands'))):
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   481
            if matches[t]:
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   482
                rst.append('%s:\n\n' % title)
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   483
                rst.extend(minirst.maketable(sorted(matches[t]), 1))
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   484
                rst.append('\n')
21288
eb6eaef7ae44 help: provide a more helpful message when no keyword are matched
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20823
diff changeset
   485
        if not rst:
eb6eaef7ae44 help: provide a more helpful message when no keyword are matched
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20823
diff changeset
   486
            msg = _('no matches')
eb6eaef7ae44 help: provide a more helpful message when no keyword are matched
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20823
diff changeset
   487
            hint = _('try "hg help" for a list of topics')
eb6eaef7ae44 help: provide a more helpful message when no keyword are matched
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20823
diff changeset
   488
            raise util.Abort(msg, hint=hint)
18746
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   489
    elif name and name != 'shortlist':
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   490
        if unknowncmd:
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   491
            queries = (helpextcmd,)
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   492
        elif opts.get('extension'):
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   493
            queries = (helpext,)
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   494
        elif opts.get('command'):
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   495
            queries = (helpcmd,)
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   496
        else:
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   497
            queries = (helptopic, helpcmd, helpext, helpextcmd)
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   498
        for f in queries:
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   499
            try:
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   500
                rst = f(name)
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   501
                break
21289
c3784e3c3e8d help: suggest keyword search when no topic is found
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 21288
diff changeset
   502
            except error.UnknownCommand:
c3784e3c3e8d help: suggest keyword search when no topic is found
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 21288
diff changeset
   503
                pass
c3784e3c3e8d help: suggest keyword search when no topic is found
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 21288
diff changeset
   504
        else:
c3784e3c3e8d help: suggest keyword search when no topic is found
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 21288
diff changeset
   505
            if unknowncmd:
c3784e3c3e8d help: suggest keyword search when no topic is found
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 21288
diff changeset
   506
                raise error.UnknownCommand(name)
c3784e3c3e8d help: suggest keyword search when no topic is found
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 21288
diff changeset
   507
            else:
c3784e3c3e8d help: suggest keyword search when no topic is found
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 21288
diff changeset
   508
                msg = _('no such help topic: %s') % name
c3784e3c3e8d help: suggest keyword search when no topic is found
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 21288
diff changeset
   509
                hint = _('try "hg help --keyword %s"') % name
c3784e3c3e8d help: suggest keyword search when no topic is found
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 21288
diff changeset
   510
                raise util.Abort(msg, hint=hint)
18746
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   511
    else:
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   512
        # program name
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   513
        if not ui.quiet:
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   514
            rst = [_("Mercurial Distributed SCM\n"), '\n']
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   515
        rst.extend(helplist())
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   516
c0087d48ec3a help: move the majority of the help command to the help module
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 17837
diff changeset
   517
    return ''.join(rst)