bug#24959: 26.0.50; cancel-timer: void-variable timer

[Lars Ingebrigtsen]

Oleg Sivokon <oleg.sivokon@elastifile.com> writes:

> Lars,
>
> Simplified version looks like this:
>
> (setq timer (run-at-time 1 1 (lambda () (cancel-timer timer)))
>
> The version that does work looks like this:
>
> (let ((timer [nil]))
>   (aset timer 0 (run-at-time 1 1 (lambda (timer) (cancel-timer (aref
> timer 0))) timer))

This will only work if you're using lexical binding -- otherwise that
`timer' in the lambda will be unbound when the lambda is called.

Is there a -*- lexical-binding: t -*- on the first line of the file in
question?

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