comparison mercurial/merge.py @ 32498:bd56bea5ecf8

merge: use intersectmatchers() in "m2-vs-ma optimization"

It doesn't seem like this can actually happen, but seems like cleaner
anyway.

32497:9eccd559c592

        if any(wctx.sub(s).dirty() for s in wctx.substate):
            m1['.hgsubstate'] = modifiednodeid

    # Don't use m2-vs-ma optimization if:
    # - ma is the same as m1 or m2, which we're just going to diff again later
    # - The matcher is set already, so we can't override it
    # - The caller specifically asks for a full diff, which is useful during bid
    #   merge.
    if (pa not in ([wctx, p2] + wctx.parents()) and
        matcher is None and not forcefulldiff):
        # Identify which files are relevant to the merge, so we can limit the
        # total m1-vs-m2 diff to just those files. This has significant
        # performance benefits in large repositories.
        relevantfiles = set(ma.diff(m2).keys())

        for copykey, copyvalue in copy.iteritems():
            if copyvalue in relevantfiles:
                relevantfiles.add(copykey)
        for movedirkey in movewithdir.iterkeys():
            relevantfiles.add(movedirkey)
        matcher = scmutil.matchfiles(repo, relevantfiles)

    diff = m1.diff(m2, match=matcher)

    if matcher is None:
        matcher = matchmod.always('', '')

32498:bd56bea5ecf8

        if any(wctx.sub(s).dirty() for s in wctx.substate):
            m1['.hgsubstate'] = modifiednodeid

    # Don't use m2-vs-ma optimization if:
    # - ma is the same as m1 or m2, which we're just going to diff again later
    # - The caller specifically asks for a full diff, which is useful during bid
    #   merge.
    if (pa not in ([wctx, p2] + wctx.parents()) and not forcefulldiff):
        # Identify which files are relevant to the merge, so we can limit the
        # total m1-vs-m2 diff to just those files. This has significant
        # performance benefits in large repositories.
        relevantfiles = set(ma.diff(m2).keys())

        for copykey, copyvalue in copy.iteritems():
            if copyvalue in relevantfiles:
                relevantfiles.add(copykey)
        for movedirkey in movewithdir.iterkeys():
            relevantfiles.add(movedirkey)
        filesmatcher = scmutil.matchfiles(repo, relevantfiles)
        matcher = matchmod.intersectmatchers(matcher, filesmatcher)

    diff = m1.diff(m2, match=matcher)

    if matcher is None:
        matcher = matchmod.always('', '')