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inverted or positive filter to not ignore lines

PostPosted: Sat May 16, 2020 8:59 am
by LucidHorizon
The line filter tool causes WinMerge to ignore lines that match a regex, and not count those lines as different. This is useful.

But what if I need the opposite? What if I want to see only the lines that differ and do match one or more regexes?

Is this a supported feature? If not, is there some way to export a file that contains only differing lines, so I can search it with another program? Or some approach I haven't considered?