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bug#23933: 25.1.50; Run a buffer-local hook with mapc
From: |
Stefan Monnier |
Subject: |
bug#23933: 25.1.50; Run a buffer-local hook with mapc |
Date: |
Sun, 10 Jul 2016 13:02:42 -0400 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/25.1.50 (gnu/linux) |
>> A hook is a symbol whose symbol-value slot holds a list of functions;
>> this happens to match a dynamically-bound variable, but not
>> a lexically-bound variable.
> Maybe I misunderstand this, but are you saying a hook (and run-hooks)
> cannot be used in a file that uses lexical-binding? If so, we had
> better documented that.
No, the issue is simply that `run-hooks' takes a symbol as argument.
You can do (run-hooks '<mydynvar>) because (symbol-value '<mydynvar>)
works, but you can't do (run-hooks '<mylexvar>) because (symbol-value
'<mylexvar>) won't work.
Using `run-hooks' on a let-bound variable is just a bad idea (just like
mixing let-binding and buffer-local binding on the same variable is
asking for trouble).
Stefan
- bug#23933: 25.1.50; Run a buffer-local hook with mapc, (continued)
- bug#23933: 25.1.50; Run a buffer-local hook with mapc, Eli Zaretskii, 2016/07/10
- bug#23933: 25.1.50; Run a buffer-local hook with mapc, Tino Calancha, 2016/07/10
- bug#23933: 25.1.50; Run a buffer-local hook with mapc, Noam Postavsky, 2016/07/10
- bug#23933: 25.1.50; Run a buffer-local hook with mapc, Eli Zaretskii, 2016/07/10
- bug#23933: 25.1.50; Run a buffer-local hook with mapc, Tino Calancha, 2016/07/10
- bug#23933: 25.1.50; Run a buffer-local hook with mapc, Eli Zaretskii, 2016/07/10
- bug#23933: 25.1.50; Run a buffer-local hook with mapc,
Stefan Monnier <=
- bug#23933: 25.1.50; Run a buffer-local hook with mapc, Andreas Schwab, 2016/07/10
bug#23933: (no subject), Tino Calancha, 2016/07/11