[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
bug#6154: error from: describe-face font-lock-*
From: |
David Reitter |
Subject: |
bug#6154: error from: describe-face font-lock-* |
Date: |
Mon, 10 May 2010 19:04:56 -0400 |
On May 10, 2010, at 11:37 AM, Stefan Monnier wrote:
>> `describe-face' assumes that `find-lisp-object-file-name' always
>> returns a file name. I'm seeing the bug described below because we're
>> pre-loading font-lock and this function returns `C-source'.
>
> All faces are defined in Lisp code, AFAIK, so the value `C-source' is
> not a correct one. Without knowing how it happened, it's hard to tell
> where the problem should be fixed.
Perhaps "pre-loading font-lock" was not enough of a hint in my report.
With a recent Emacs 23 branch checkout:
add a lisp/site-load.el file with the contents
(load "font-lock")
then re-build.
Then, Emacs -Q, and
M-x describe-face RET font-lock-comment-face RET
will produce the error. Trace, again, below.
So:
The `find-lisp-object-file-name' should probably return "font-lock.el" instead
of `C-source'.
`describe-face' will break as it is should a face ever be defined in C. See
patch.
Debugger entered--Lisp error: (wrong-type-argument stringp C-source)
file-name-nondirectory(C-source)
describe-face((font-lock-comment-face))
call-interactively(describe-face t nil)
execute-extended-command(nil)
call-interactively(execute-extended-command nil nil)