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From: Eli Zaretskii <eliz@gnu.org>
To: Mario Lang <mlang@blind.guru>
Cc: emacs-devel@gnu.org
Subject: Re: Why does signaling an error not call set-message-function?
Date: Tue, 05 Apr 2022 14:38:08 +0300	[thread overview]
Message-ID: <83h777ep5r.fsf@gnu.org> (raw)
In-Reply-To: <87tub8hsax.fsf@blind.guru> (message from Mario Lang on Tue, 05 Apr 2022 10:01:58 +0200)

> From: Mario Lang <mlang@blind.guru>
> Date: Tue, 05 Apr 2022 10:01:58 +0200
> 
> Hi.
> 
> I just realized that only a certain type of message goes through
> `set-message-function'.  In particular, things like
> 
> (signal 'end-of-buffer nil)
> 
> write to the echo area but do not trigger set-message-function.
> 
> This is a bit unexpected.  Is there an equivalent hook for
> error messages going to the echo area?

(set-message-function _does_ affect echo-area messages, just not any
kind of them.)

Are you sure it is a good idea to allow running arbitrary Lisp when
Emacs wants to signal an error?



  reply	other threads:[~2022-04-05 11:38 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-04-05  8:01 Why does signaling an error not call set-message-function? Mario Lang
2022-04-05 11:38 ` Eli Zaretskii [this message]
2022-04-05 12:05   ` Mario Lang
2022-04-05 12:21     ` Eli Zaretskii
2022-04-05 12:55       ` Mario Lang
2022-04-05 13:58         ` T.V Raman
2022-04-05 13:14       ` Stefan Monnier
2022-04-05 13:20         ` Eli Zaretskii
2022-04-05 13:34           ` Stefan Monnier
2022-04-05 13:39             ` Eli Zaretskii
2022-04-05 14:19               ` Stefan Monnier
2022-04-05 16:07                 ` T.V Raman

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