GNU bug report logs - #57082
29.0.50; emacs-news-view-mode breakage

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From: Stephen Berman <stephen.berman <at> gmx.net>
To: Juri Linkov <juri <at> linkov.net>
Cc: Lars Ingebrigtsen <larsi <at> gnus.org>, 57082 <at> debbugs.gnu.org
Subject: bug#57082: 29.0.50; emacs-news-view-mode breakage
Date: Wed, 10 Aug 2022 10:19:19 +0200

On Wed, 10 Aug 2022 10:36:22 +0300 Juri Linkov <juri <at> linkov.net> wrote:

>>> Also don't understand why is this change:
>>>
>>>          (when outline-minor-mode-highlight
>>> -          (if (and global-font-lock-mode (font-lock-specified-p major-mode))
>>> -              (progn
>>> -                (font-lock-add-keywords nil outline-font-lock-keywords t)
>>> -                (font-lock-flush))
>>> -            (outline-minor-mode-highlight-buffer)))
>>> +          (when (and global-font-lock-mode (font-lock-specified-p major-mode))
>>> +            (font-lock-add-keywords nil outline-font-lock-keywords t)
>>> +            (font-lock-flush))
>>> +          (outline-minor-mode-highlight-buffer))
>>>
>>> `outline-minor-mode-highlight-buffer' is intended only for buffers
>>> that don't support font-lock highlighting.
>>
>> Yes, but with that change, arrows are displayed on first visiting the
>> NEWS buffer; without it, they only appear when typing TAB on an outline
>> heading.
>
> This change broke fontification e.g. in diff buffers that now
> add outline faces on diff hunks.  So we need another solution.

Oh, dear (as I noted in my OP, I only checked NEWS and *Help* with
describe-binding).  But do you have a recipe to see this?  When I create
a diff with vc-diff I don't see outline faces on the hunks.

Steve Berman

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