GNU bug report logs - #61396
diff mode could distinguish changed from deleted lines

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From: Juri Linkov <juri <at> linkov.net>
To: Samuel Wales <samologist <at> gmail.com>
Cc: 61396 <at> debbugs.gnu.org
Subject: bug#61396: diff mode could distinguish changed from deleted lines
Date: Fri, 10 Feb 2023 09:17:07 +0200

> a fix is to have a different face for changed lines.  i
> suggest a muted bg face.  another fix is to stick a colored
> marker INDICATOR in A where changes in B exist.
>
>   -now is the time^
>   +now is the time FOR ALL GOOD MEN
>
> where ^ is a colored marker -- actually just a changed bg
> for the newline in this case would work, but i don't think
> emacs supports that.

We have a dedicated face to indicate the changed lines.
Its name is 'diff-changed' and it can be used for context diffs
that have a special indicator '!' at the beginning of changed lines.
Is it possible to output the same indicator for unified diffs?

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