bug#37019: 27.0.50; "C-x v =' and 'diff-font-lock-prettify' when there's no left fringe

[Lars Ingebrigtsen]

Eli Zaretskii <eliz@gnu.org> writes:

> To reproduce:
>
>   emacs -Q
>   [visit some versioned file under Git control]
>   M-x set-variable RET diff-font-lock-prettify RET t RET
>   M-x fringe-mode RET right-only RET
>   C-u C-x v = SOME-REVISION RET RET
>
> The last command reports changes of the file since SOME-REVISION.  But
> because the left fringe is unavailable, there's no insert/delete
> indicators at all, not even the original ones displayed when
> diff-font-lock-prettify is nil.
>
> I think in this case we should keep the original indicators.

Yup.  I've now fixed this in Emacs 29.

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   bloggy blog: http://lars.ingebrigtsen.no