From: martin rudalics <rudalics@gmx.at>
To: Drew Adams <drew.adams@oracle.com>
Cc: 7087@debbugs.gnu.org
Subject: bug#7087: 24.0.50; cannot customize default-frame-alist - it says value is nil but it is not
Date: Fri, 24 Sep 2010 07:51:38 +0200 [thread overview]
Message-ID: <4C9C3C6A.3040009@gmx.at> (raw)
In-Reply-To: <4433C2799F32480A90E36306C8157831@us.oracle.com>
> However, if the value does become something like that for some reason, then the
> displayed value should be the complete sexp that is the value, not just one
> little part of it. So there is apparently a bug present in any case - probably
> in the customize code.
Not here. If I evaluate
(custom-set-variables
'(default-frame-alist
(quote
((foreground-color . "Black")
(background-color . "LightBlue")
...
and do customize it I get "SAVED and set. (mismatch)" showing the whole
sexp in my customization buffer.
> Yes, indeed. Again, dunno how the nil value got there. Probably something that
> happened during the session. Perhaps there is a bug elsewhere that introduced
> that.
Do write a function for your `post-command-hook' that checks whether a nil
value was added by the last command and run it for a while.
> Note though that the nil entry did not seem to in any way interfere with the
> use/behavior of `default-frame-alist'. And that makes sense.
Why should it? It's based on something like `assq' and we know that it
does
Return non-nil if KEY is `eq' to the car of an element of LIST.
The value is actually the first element of LIST whose car is KEY.
Elements of LIST that are not conses are ignored.
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> FWIW, I've checked all of my own code to be sure that the nil alist entry could
> not have come from it. In all cases it uses a cons. I did not check all other
> 3rd-party code I might load, but if I had to guess I'd guess that this came
> somehow from the vanilla Emacs 24 code, mainly because I've never come across
> this before.
That's why I asked you to check this in the first place ;-)
Maybe an error condition was raised and the handler returned nil instead
of a cons.
martin
prev parent reply other threads:[~2010-09-24 5:51 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-22 22:15 bug#7087: 24.0.50; cannot customize default-frame-alist - it says value is nil but it is not Drew Adams
2010-09-23 8:31 ` Eli Zaretskii
2010-09-23 12:06 ` martin rudalics
2010-09-23 20:35 ` Drew Adams
2010-09-24 5:51 ` martin rudalics [this message]
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=4C9C3C6A.3040009@gmx.at \
--to=rudalics@gmx.at \
--cc=7087@debbugs.gnu.org \
--cc=drew.adams@oracle.com \
/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.