bug#51016: 28.0.50; 'diff-font-lock-prettify' breaks display of outline headers

[Matthias Meulien <orontee@gmail.com>]

Matthias Meulien <orontee@gmail.com> writes:

>> Juri Linkov <juri@linkov.net> writes:
>>
>>> I confirm there is a relation because the commit f0768d3145
>>
>> Oh you're right. Sorry.
>>
>>> However, changing the .+ thing to .* in outline-font-lock-keywords
>>> fixes this problem.  So we need to decide whether to try to remove
>>> entire line mathing from diff-hunk-header-re (not sure how easy to
>>> do),
>
> I just skipped last character of `diff-hunk-header-re' (the culprit `$')
> when building `diff-outline-regexp'; Cycling is restored when on hunk
> headers. Looks safe to me since `diff-hunk-header-re' is unchanged.

Ok, it works on hunks with "context information" like

   @@ -147,6 +160,61 @@ diff-font-lock-syntax

But it's still broken when there's no "context information" like

   @@ -50,6 +50,7 @@

which argues for your second suggestion, changing
`outline-font-lock-keywords'.
-- 
Matthias