hgext/children.py

mq: fix the deprecation comment for qsave & qrestore.

Changeset bcf90e712dc3 deprecated qsave and qrestore. In the
deprecating comment, users were referred to 'rebase --mq' which -- at
the time the message was written -- didn't exist. Currently, on the
default branch, rebase *does* take a '--mq' option, but it probably
doesn't do what Dirkjan expected it to do when he wrote the message.

In the original, deprecating commit, little context was provided as to
why this change was made. Based on my recollection, concensus at the
Paris Sprint in February 2010 was that one of the problems with MQ was
that it exposed far too many commands. Notable among these were qsave
& qrestore: very few core developers understood what they did and even
fewer (none, IIRC) actually used them. However, they couldn't be
removed; not only do the usual backwards compatibility reasons apply,
but the hg book refers to them.

# Mercurial extension to provide the 'hg children' command
#
# Copyright 2007 by Intevation GmbH <[e-mail]>
#
# Author(s):
# Thomas Arendsen Hein <[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.

'''command to display child changesets'''

from mercurial import cmdutil
from mercurial.commands import templateopts
from mercurial.i18n import _


def children(ui, repo, file_=None, **opts):
    """show the children of the given or working directory revision

    Print the children of the working directory's revisions. If a
    revision is given via -r/--rev, the children of that revision will
    be printed. If a file argument is given, revision in which the
    file was last changed (after the working directory revision or the
    argument to --rev if given) is printed.
    """
    rev = opts.get('rev')
    if file_:
        ctx = repo.filectx(file_, changeid=rev)
    else:
        ctx = repo[rev]

    displayer = cmdutil.show_changeset(ui, repo, opts)
    for cctx in ctx.children():
        displayer.show(cctx)
    displayer.close()

cmdtable = {
    "children":
        (children,
         [('r', 'rev', '',
           _('show children of the specified revision'), _('REV')),
         ] + templateopts,
         _('hg children [-r REV] [FILE]')),
}