From: Lennart Borgman <lennart.borgman.073@student.lu.se>
Subject: Displaying errors during startup
Date: Wed, 26 Apr 2006 17:13:43 +0200 [thread overview]
Message-ID: <444F8E27.10501@student.lu.se> (raw)
After the recent discussion about error messages at startup (this time
it was about pure-space-overflow) it came to my mind I often tend to
miss errors at startup. You can not see them because of the splash
screen for example. I just started testing `lwarn' because of this. I
did something like this:
(condition-case err
(require 'something-bad)
(error
(lwarn '(.emacs) :error "%s" (error-message-string err))))
This displays the error in a nice way even during startup. Looking a bit
closer at it it seems to be some trouble with using `pop-to-buffer' in
startup.el when loading .emacs. I therefore suggest using
`display-buffer' instead like lwarn does. It would also be nice to have
a more visible face when putting this in the message buffer. I therefore
suggest using something like the code below in startup.el (around line 905):
(if init-file-debug
(load inner)
(condition-case error
(load inner)
(error
(let ((message-log-max nil))
(save-excursion
(set-buffer (get-buffer-create "*Messages*"))
(let ((s
(concat
"\n\n"
(format "An error has occurred while loading `%s':\n\n"
user-init-file)
(format "%s%s%s"
(get (car error) 'error-message)
(if (cdr error) ": " "")
(mapconcat (lambda (s) (prin1-to-string s t))
(cdr error) ", "))
"\n\n"
"To ensure normal operation, you should investigate
and remove the\n"
"cause of the error in your initialization file.
Start Emacs with\n"
"the `--debug-init' option to view a complete error
backtrace.\n\n")))
(put-text-property
0 (length s)
'face 'font-lock-warning-face
s)
(insert s)
(insert "\n") ;; Needed to get normal face again.
(message "Error in init file: %s%s%s"
(get (car error) 'error-message)
(if (cdr error) ": " "")
(mapconcat 'prin1-to-string (cdr error) ", "))
;;(let ((pop-up-windows nil))
;; (pop-to-buffer "*Messages*"))
(display-buffer "*Messages*") ;; display-buffer does the job.
(sit-for 10) ;; sit-for is necessary to display the info at
once.
(setq init-file-had-error t)))))))
Maybe this would be good to do before the release because it makes it
somewhat easier to trap errors.
next reply other threads:[~2006-04-26 15:13 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-04-26 15:13 Lennart Borgman [this message]
2006-04-26 18:41 ` Displaying errors during startup Kevin Rodgers
2006-04-27 21:27 ` Richard Stallman
2006-04-27 21:34 ` Lennart Borgman
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=444F8E27.10501@student.lu.se \
--to=lennart.borgman.073@student.lu.se \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
Code repositories for project(s) associated with this external index
https://git.savannah.gnu.org/cgit/emacs.git
https://git.savannah.gnu.org/cgit/emacs/org-mode.git
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.