comparison hgext/extdiff.py @ 23969:01e5b7323a48 stable

extdiff: reintroduce backward compatibility with manual quoting of parameters

72a89cf86fcd broke things ... and the following cleanups didn't fix all issues.
It didn't work with the diffargs shipped in mergetools.rc with explicit
quoting. Parameters would end up with being quoted twice - especially if they
really needed quoting.

To work around that, look for explicit quotes around the variables that will be
substituted with proper quoting. Also accept an additional prefix so we can
handle both
  --foo='$parent'
and
  '--foo=$parent'

It will however still fail if the user intentionally place the variable inside
a quoted string, as in
  'parent $parent is on the left'
There is currently no good way to handle that, short of knowing exactly which
quoting mechanism will be used.

23968:6564ec382560

        replace = {'parent': dir1a, 'parent1': dir1a, 'parent2': dir1b,
                   'plabel1': label1a, 'plabel2': label1b,
                   'clabel': label2, 'child': dir2,
                   'root': repo.root}
        def quote(match):
            key = match.group()[1:]
            if not do3way and key == 'parent2':
                return ''
            return util.shellquote(replace[key])

        # Match parent2 first, so 'parent1?' will match both parent1 and parent
        regex = '\$(parent2|parent1?|child|plabel1|plabel2|clabel|root)'
        if not do3way and not re.search(regex, cmdline):
            cmdline += ' $parent1 $child'
        cmdline = re.sub(regex, quote, cmdline)

        ui.debug('running %r in %s\n' % (cmdline, tmproot))

23969:01e5b7323a48

        replace = {'parent': dir1a, 'parent1': dir1a, 'parent2': dir1b,
                   'plabel1': label1a, 'plabel2': label1b,
                   'clabel': label2, 'child': dir2,
                   'root': repo.root}
        def quote(match):
            pre = match.group(2)
            key = match.group(3)
            if not do3way and key == 'parent2':
                return pre
            return pre + util.shellquote(replace[key])

        # Match parent2 first, so 'parent1?' will match both parent1 and parent
        regex = (r'''(['"]?)([^\s'"$]*)'''
                 r'\$(parent2|parent1?|child|plabel1|plabel2|clabel|root)\1')
        if not do3way and not re.search(regex, cmdline):
            cmdline += ' $parent1 $child'
        cmdline = re.sub(regex, quote, cmdline)

        ui.debug('running %r in %s\n' % (cmdline, tmproot))