comparison hgext/evolve.py @ 1784:c3741a5adbb0 stable

fold: cleanly abort on empty fold set (issue5453)

We now handle the empty set case, cleanly aborting instead of crashing with a
traceback. The message used match the output of 'hg push' in similar situation.

1777:e7149cc5101f

            raise error.Abort(_("cannot fold non-linear revisions"),
                               hint=_("given revisions are unrelated to parent "
                                      "of working directory"))
        revs = extrevs

    if len(revs) == 1:
        ui.write_err(_('single revision specified, nothing to fold\n'))
        return 1

    wlock = lock = None
    try:

1784:c3741a5adbb0

            raise error.Abort(_("cannot fold non-linear revisions"),
                               hint=_("given revisions are unrelated to parent "
                                      "of working directory"))
        revs = extrevs

    if not revs:
        raise error.Abort(_('specified revisions evaluate to an empty set'),
                          hint=_('use different revision arguments'))
    elif len(revs) == 1:
        ui.write_err(_('single revision specified, nothing to fold\n'))
        return 1

    wlock = lock = None
    try: