comparison mercurial/help.py @ 27379:2278870bb997

help: support loading sub-topics

If a sub-topic/section is requested and the main topic corresponds to
a topic with sub-topics, we now look for and return content for a
sub-topic if found.

With this patch, `hg help internals.X` now works. hgweb does not yet
render sub-topics, however.

27378:c709b515218e

     loaddoc('scripting')),
    (['internals'], _("Technical implementation topics"),
     internalshelp),
])

# Map topics to lists of callable taking the current topic help and
# returning the updated version
helphooks = {}

def addtopichook(topic, rewriter):

                             'and global options)\n')
                           % (name and " " + name or ""))
        return rst

    def helptopic(name, subtopic=None):
        for names, header, doc in helptable:
            if name in names:
                break
        else:
            raise error.UnknownCommand(name)

        rst = [minirst.section(header)]

        # description
        if not doc:

27379:2278870bb997

     loaddoc('scripting')),
    (['internals'], _("Technical implementation topics"),
     internalshelp),
])

# Maps topics with sub-topics to a list of their sub-topics.
subtopics = {
    'internals': internalstable,
}

# Map topics to lists of callable taking the current topic help and
# returning the updated version
helphooks = {}

def addtopichook(topic, rewriter):

                             'and global options)\n')
                           % (name and " " + name or ""))
        return rst

    def helptopic(name, subtopic=None):
        # Look for sub-topic entry first.
        header, doc = None, None
        if subtopic and name in subtopics:
            for names, header, doc in subtopics[name]:
                if subtopic in names:
                    break

        if not header:
            for names, header, doc in helptable:
                if name in names:
                    break
            else:
                raise error.UnknownCommand(name)

        rst = [minirst.section(header)]

        # description
        if not doc: