Re: [PATCH 0/3] built-in add -p: support diff-so-fancy better

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Hi Philippe,

On Tue, 23 Aug 2022, Philippe Blain wrote:

> Le 2022-08-23 à 14:04, Johannes Schindelin via GitGitGadget a écrit :
> > Philippe Blain reported in
> > https://lore.kernel.org/git/ecf6f5be-22ca-299f-a8f1-bda38e5ca246@xxxxxxxxx
> > that there is a problem when running the built-in version of git add -p with
> > diff-so-fancy [https://github.com/so-fancy/diff-so-fancy] as diff colorizer.
> > The symptom is this:
> >
> >     error: could not parse colored hunk header '?[36m?[1m?[38;5;13m@ file:1 @?[1m?[0m'
> >
> >
> > This patch series addresses that and should fix
> > https://github.com/so-fancy/diff-so-fancy/issues/437
>
> Thanks for the quick reaction!
> I've verified that the patches fix the example in my reproducer, and they also fix it
> if using "delta --color-only" as interactive.diffFilter. Delta is another diff colorizer
> (and more) that's facing the same issue as diff-so-fancy [1].

Great!

> However, I've tried it on a more "real-life" example, and then I get:
>
>     error: mismatched output from interactive.diffFilter
>     hint: Your filter must maintain a one-to-one correspondence
>     hint: between its input and output lines.
>
> This is despite using "diff-so-fancy --patch" as interactive.diffFilter, which should
> keep the number of lines the same.

Would you mind sharing the example with me?

Thanks,
Dscho

> This ('--patch') was added in [2], about a month after Peff wrote the message
> you mention in https://lore.kernel.org/git/s40ss309-3311-o08s-38r2-9144r33pq549@xxxxxx/.
>
> Again, when using the Perl version with this new example, it works correctly. I'll try to come up with a new
> reproducer for this... But this new example does work with delta with the builtin version,
> so it might be diff-so-fancy that's the culprit...
>
> Cheers,
>
> Philippe.
>
> [1] https://github.com/dandavison/delta/issues/1114
> [2] https://github.com/so-fancy/diff-so-fancy/commit/13d3f8949e15dd62f6b49bc652fe94af6a9bfc79
>

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