From: Thierry Volpiatto <thierry.volpiatto@gmail.com>
To: emacs-devel@gnu.org
Subject: Re: new fboundp behavior weird
Date: Sat, 29 Dec 2012 18:41:49 +0100 [thread overview]
Message-ID: <871ue8eowy.fsf@gmail.com> (raw)
In-Reply-To: 3BF3680C402B4A718A15428F0A33EE5E@us.oracle.com
"Drew Adams" <drew.adams@oracle.com> writes:
>> > the new behavior of fboundp seems really bad.
>> > For example debug-on-entry fail on functions not already
>> > bound but have an alias.
>> >
>> > NOTE: This is reproductible only on the trunk, not emacs-24
>> > branch which is working fine.
>> >
>> To reproduce:
>> emacs -Q
>> (defalias 'foo 'bar)
>> (setq debug-on-error t)
>> M-x debug-on-entry RET foo TAB
>>
>> NOTE:
>> (fboundp 'foo)
>> =>t
>> (symbol-function 'foo)
>> =>bar
>> So a fix using in addition of `fboundp' `symbol-function' would not
>> work. i.e `symbol-function' is not returning nil.
>> Anyway `fboundp' is used in so many places...
>
> I'm probably misunderstanding, but that is reproducible on all Emacs versions
> going back at least to Emacs 20. And it looks like correct behavior, to me.
>
> What am I missing? Just what is the problem with the behavior you report? And
> are you sure it is not reproducible on the Emacs 24 branch? (I don't have the
> branch, but it is reproducible in Emacs 24.2.)
>
> Symbol `foo' does have a function-cell definition: the symbol `bar'. That
> symbol `bar' has no function definition is immaterial to whether `foo' is
> `fboundp'. Perhaps you are looking for `functionp' instead of `fboundp'?
No, debug-on-entry is using `fboundp'.
You have to run this to reproduce:
emacs -Q
(defalias 'foo 'bar)
(setq debug-on-error t)
M-x debug-on-entry RET foo TAB
And then you get the error.
I know it is stupid to make such aliases, but some packages (DVC) use
such aliases on non--existing functions.
(I guess the non--existing functions are build
during compilation if backend is available)
Anyway `debug-on-entry' should ignore this instead of sending error,
like it does on emacs-24 branch.
--
Thierry
Get my Gnupg key:
gpg --keyserver pgp.mit.edu --recv-keys 59F29997
next prev parent reply other threads:[~2012-12-29 17:41 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-12-29 11:38 new fboundp behavior weird Thierry Volpiatto
2012-12-29 12:35 ` Thierry Volpiatto
2012-12-29 16:27 ` Drew Adams
2012-12-29 17:41 ` Thierry Volpiatto [this message]
2012-12-29 20:56 ` Drew Adams
2012-12-29 21:36 ` Thierry Volpiatto
2012-12-30 10:25 ` Vitalie Spinu
2012-12-30 11:57 ` Vitalie Spinu
2012-12-29 16:32 ` Andreas Schwab
2012-12-31 3:06 ` Stefan Monnier
2012-12-31 6:51 ` Thierry Volpiatto
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=871ue8eowy.fsf@gmail.com \
--to=thierry.volpiatto@gmail.com \
--cc=emacs-devel@gnu.org \
/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.