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

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Message #50 received at 61396 <at> debbugs.gnu.org (full text, mbox):

From: Juri Linkov <juri <at> linkov.net>
To: Samuel Wales <samologist <at> gmail.com>
Cc: 61396 <at> debbugs.gnu.org, rms <at> gnu.org
Subject: Re: bug#61396: diff mode could distinguish changed from deleted lines
Date: Sun, 12 Feb 2023 10:31:13 +0200

> this is a bug against emacs diff-mode.
>
> diff is not responsible for diff-mode colors.  diff-mode is.

You can use such a heuristics that when the region with deleted lines
borders the region with added lines this means that both regions show
the changed lines.  So adjacent regions in the hunk = changed lines,
disconnected regions of added or deleted lines = separate additions/deletions.

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