mercurial/filemerge.py

11701:84fb29f5e0d2

        try:
            return util.binary(ctx.data())
        except IOError:
            return False

    if not fco.cmp(fcd.data()): # files identical?
        return None

    if fca == fco: # backwards, use working dir parent as ancestor
        fca = fcd.parents()[0]

11702:eb07fbc21e9c

        try:
            return util.binary(ctx.data())
        except IOError:
            return False

    if not fco.cmp(fcd): # files identical?
        return None

    if fca == fco: # backwards, use working dir parent as ancestor
        fca = fcd.parents()[0]