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bug#19684: 25.0.50; `this-command` is set to `nil` before `window-scroll
bug#19684: 25.0.50; `this-command` is set to `nil` before `window-scroll-functions` hook runs.
Sun, 25 Jan 2015 11:38:51 +0100
> To the extent that a user wishes to use the value of `this-command`
> within a function attached to the `window-scroll-functions` hook, a
> workaround is needed because the default value is `nil`. In other
> words, something at the C source code level is setting the value to
> `nil` before the `window-scroll-functions` hook runs.
Couldn't you use `last-command' here?