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bug#59067: 29.0.50; Exexpected overlay order in `overlays-in' return val
From: |
Stefan Monnier |
Subject: |
bug#59067: 29.0.50; Exexpected overlay order in `overlays-in' return value |
Date: |
Thu, 10 Nov 2022 21:32:11 -0500 |
User-agent: |
Gnus/5.13 (Gnus v5.13) |
>> I'm not asking for any kind of justification, but I'm wondering what
>> would happen if you used a different sort order (i.e. the same but in
>> reverse, or sorted by overlays's end, ...): would the rest of the code
>> need to be adjusted? If so, in a trivial way? Or does some of the
>> algorithm rely crucially on this particular ordering?
>
> Most of the code there needs to use the "innermost" overlay, and more or
> less ignore the rest of them.
Hmm... but we're talking about `overlays-in`, so many/most overlays
might be completely disjoint and thus incomparable in the sense of
which one is "innermost".
> Another place which might be important is the order in which the 'face'
> property is applied by Emacs (with 'priority' being equal).
Same here: this is designed for the case where all of those overlays
cover a given position, so they're not disjoint. This said, sorting
using that same algorithm for disjoint overlays would end up sorting by
overlay-start, if I read the code correctly, so it might not be
a bad choice.
Stefan
- bug#59067: 29.0.50; Exexpected overlay order in `overlays-in' return value, (continued)
- bug#59067: 29.0.50; Exexpected overlay order in `overlays-in' return value, Ihor Radchenko, 2022/11/06
- bug#59067: 29.0.50; Exexpected overlay order in `overlays-in' return value, Stefan Monnier, 2022/11/10
- bug#59067: 29.0.50; Exexpected overlay order in `overlays-in' return value, Dmitry Gutov, 2022/11/10
- bug#59067: 29.0.50; Exexpected overlay order in `overlays-in' return value, Stefan Monnier, 2022/11/10
- bug#59067: 29.0.50; Exexpected overlay order in `overlays-in' return value, Dmitry Gutov, 2022/11/10
- bug#59067: 29.0.50; Exexpected overlay order in `overlays-in' return value, Stefan Monnier, 2022/11/10
- bug#59067: 29.0.50; Exexpected overlay order in `overlays-in' return value, Dmitry Gutov, 2022/11/10
- bug#59067: 29.0.50; Exexpected overlay order in `overlays-in' return value,
Stefan Monnier <=
- bug#59067: 29.0.50; Exexpected overlay order in `overlays-in' return value, Eli Zaretskii, 2022/11/11