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From: Eli Zaretskii <eliz@gnu.org>
To: Alan Mackenzie <acm@muc.de>
Cc: larsi@gnus.org, emacs-devel@gnu.org
Subject: Re: Why is it so difficult to get a Lisp backtrace?
Date: Sat, 25 Jun 2022 19:51:59 +0300	[thread overview]
Message-ID: <83sfnsadow.fsf@gnu.org> (raw)
In-Reply-To: <Yrcw+Kaq1P4WS8x1@ACM> (message from Alan Mackenzie on Sat, 25 Jun 2022 15:59:52 +0000)

> Date: Sat, 25 Jun 2022 15:59:52 +0000
> Cc: emacs-devel@gnu.org
> From: Alan Mackenzie <acm@muc.de>
> 
> Another thing I'd like to be able to do is get a backtrace when there's
> an error in font-locking during redisplay.  That's a whole order of
> magnitude difference in complexity.

The only two ways of having that, AFAIK, are:

  . emit the backtrace int *Messages*
  . add the backtrace to delayed-warnings-list

You _cannot_ have a *backtrace* buffer popping up when the error comes
from some Lisp called by redisplay, because we explicitly disable
that, and for a good reason.



  reply	other threads:[~2022-06-25 16:51 UTC|newest]

Thread overview: 54+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-06-25 13:42 Why is it so difficult to get a Lisp backtrace? Alan Mackenzie
2022-06-25 15:26 ` Alan Mackenzie
2022-06-25 15:30   ` Stefan Kangas
2022-06-25 15:52     ` Alan Mackenzie
2022-06-25 16:27       ` Stefan Kangas
2022-06-25 15:35   ` Lars Ingebrigtsen
2022-06-25 15:59     ` Alan Mackenzie
2022-06-25 16:51       ` Eli Zaretskii [this message]
2022-06-25 19:45         ` Alan Mackenzie
2022-06-26  5:20           ` Eli Zaretskii
2022-06-27 19:48             ` Fontification error backtrace [Was: Why is it so difficult to get a Lisp backtrace?] Alan Mackenzie
2022-06-28 11:43               ` Lars Ingebrigtsen
2022-06-28 11:57               ` Eli Zaretskii
2022-06-28 17:28                 ` Alan Mackenzie
2022-06-28 18:17                   ` Eli Zaretskii
2022-06-28 19:31                     ` Alan Mackenzie
2022-06-29 19:00                       ` Eli Zaretskii
2022-07-12 19:48                         ` Redisplay hook error bactraces [Was: Fontification error backtrace] Alan Mackenzie
2022-07-13 12:33                           ` Eli Zaretskii
2022-07-13 18:41                             ` Redisplay hook error backtraces Alan Mackenzie
2022-07-13 19:00                               ` Eli Zaretskii
2022-07-13 20:12                                 ` Alan Mackenzie
2022-07-13 20:49                                   ` Stefan Monnier
2022-07-14  5:12                                   ` Eli Zaretskii
2022-07-14  9:01                                     ` Alan Mackenzie
2022-07-14  9:10                                       ` Eli Zaretskii
2022-07-14 13:42                                         ` Alan Mackenzie
2022-07-14 13:59                                           ` Eli Zaretskii
2022-07-14 16:07                                             ` Alan Mackenzie
2022-07-14 16:18                                               ` Stefan Monnier
2022-07-14 19:47                                                 ` Alan Mackenzie
2022-07-14 20:48                                                   ` Stefan Monnier
2022-07-15  5:50                                                   ` Eli Zaretskii
2022-07-15 18:18                                                     ` Alan Mackenzie
2022-07-16  6:03                                                       ` Eli Zaretskii
2022-07-14 17:09                                               ` Eli Zaretskii
2022-07-14 19:33                                                 ` Alan Mackenzie
2022-07-16  6:12                                                   ` Eli Zaretskii
2022-07-16 15:45                                                     ` Alan Mackenzie
2022-07-13 19:13                           ` Redisplay hook error bactraces [Was: Fontification error backtrace] Stefan Monnier
2022-07-13 19:24                             ` Eli Zaretskii
2022-07-13 19:58                             ` Alan Mackenzie
2022-07-13 20:45                               ` Stefan Monnier
2022-06-30 20:34                       ` Fontification error backtrace [Was: Why is it so difficult to get a Lisp backtrace?] Stefan Monnier
2022-07-01  5:39                         ` Eli Zaretskii
2022-07-01 15:34                           ` Juri Linkov
2022-07-01 16:04                             ` Eli Zaretskii
2022-07-01 19:14                               ` Juri Linkov
2022-07-01 19:26                           ` Stefan Monnier
2022-07-02  5:53                             ` Eli Zaretskii
2022-07-02 21:15                               ` Stefan Monnier
2022-07-02 20:27                         ` Alan Mackenzie
2022-07-02 21:12                           ` Stefan Monnier
2022-06-26  8:45 ` Why is it so difficult to get a Lisp backtrace? Stefan Monnier

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