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bug#19684: 25.0.50; `this-command` is set to `nil` before `window-scroll
From: |
Stefan Kangas |
Subject: |
bug#19684: 25.0.50; `this-command` is set to `nil` before `window-scroll-functions` hook runs. |
Date: |
Tue, 1 Oct 2019 22:16:57 +0200 |
Stefan Monnier <monnier@IRO.UMontreal.CA> writes:
> tags 19684 notabug
> thanks
>
>> 1. Expressly call `redisplay` at the tail end of the series of
>> functions attached to the `post-command-hook`.
>> Calling `redisplay` somehow prevents `this-command` from being
>> reset to `nil` and the `window-scroll-functions` hook can then
>> take advantage of the existing value of `this-command`.
>
> It's not that calling `redisplay' prevents it. It's that the normal
> redisplay is run later (potentially much later if there are other things
> pending), at a point which is not directly connected with the command,
> hence this-command is not set any more because we're really not in the
> process of running that command any more.
This was already tagged notabug; I'm now also closing it.
Best regards,
Stefan Kangas
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- bug#19684: 25.0.50; `this-command` is set to `nil` before `window-scroll-functions` hook runs.,
Stefan Kangas <=