* bug#6154: error from: describe-face font-lock-* [not found] <h2m20ecf6c71005092257vefcec2ffv4a4b79c39e9294e@mail.gmail.com> @ 2010-05-10 13:58 ` David Reitter 2010-05-10 15:37 ` Stefan Monnier 0 siblings, 1 reply; 6+ messages in thread From: David Reitter @ 2010-05-10 13:58 UTC (permalink / raw) To: 6154; +Cc: nathaniel.cunningham [-- Attachment #1: Type: text/plain, Size: 2335 bytes --] X-Debbugs-CC: nathaniel.cunningham@gmail.com `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'. I suggest the patch below. Debugger entered--Lisp error: (wrong-type-argument stringp C-source) file-name-nondirectory(C-source) describe-face((font-lock-constant-face)) call-interactively(describe-face t nil) execute-extended-command(nil) call-interactively(execute-extended-command nil nil) diff --git a/lisp/faces.el b/lisp/faces.el index 740c7f7..5994f3e 100644 --- a/lisp/faces.el +++ b/lisp/faces.el @@ -1406,12 +1406,14 @@ If FRAME is omitted or nil, use the selected frame." (setq file-name (find-lisp-object-file-name f 'defface)) (when file-name (princ "Defined in `") - (princ (file-name-nondirectory file-name)) + (princ (if (symbolp file-name) file-name + (file-name-nondirectory file-name))) (princ "'") ;; Make a hyperlink to the library. - (save-excursion - (re-search-backward "`\\([^`']+\\)'" nil t) - (help-xref-button 1 'help-face-def f file-name)) + (unless (symbolp file-name) + (save-excursion + (re-search-backward "`\\([^`']+\\)'" nil t) + (help-xref-button 1 'help-face-def f file-name))) (princ ".") (terpri) (terpri)) Begin forwarded message: > From: Nathaniel Cunningham <nathaniel.cunningham@gmail.com> > Date: May 10, 2010 1:57:32 AM EDT > To: Development of Aquamacs Emacs <aquamacs-devel@aquamacs.org> > Subject: [Aquamacs-devel] error from: describe-face font-lock-* > Reply-To: Aquamacs Developers <aquamacs-devel@aquamacs.org> > > Just came across this error: > M-x describe-face [RET] font-lock-constant-face [RET] > > Wrong type argument: stringp, C-source > > No *Help* frame appears. If I then describe a different face sucessfully, e.g. tabbar-default, then repeat the sequence above, the *Help* frame get reused, and says: > > Face: font-lock-constant-face (sample) (customize this face) > > Documentation: > Font Lock mode face used to highlight constants and labels. > > Defined in ` > > I get the same error for all the font-lock faces tested so far, but no others. [-- Attachment #2: Type: text/html, Size: 5951 bytes --] ^ permalink raw reply related [flat|nested] 6+ messages in thread
* bug#6154: error from: describe-face font-lock-* 2010-05-10 13:58 ` bug#6154: error from: describe-face font-lock-* David Reitter @ 2010-05-10 15:37 ` Stefan Monnier 2010-05-10 23:04 ` David Reitter 0 siblings, 1 reply; 6+ messages in thread From: Stefan Monnier @ 2010-05-10 15:37 UTC (permalink / raw) To: David Reitter; +Cc: nathaniel.cunningham, 6154 > `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. Stefan ^ permalink raw reply [flat|nested] 6+ messages in thread
* bug#6154: error from: describe-face font-lock-* 2010-05-10 15:37 ` Stefan Monnier @ 2010-05-10 23:04 ` David Reitter 2010-05-11 3:21 ` Dan Nicolaescu 0 siblings, 1 reply; 6+ messages in thread From: David Reitter @ 2010-05-10 23:04 UTC (permalink / raw) To: Stefan Monnier; +Cc: nathaniel.cunningham, 6154 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) ^ permalink raw reply [flat|nested] 6+ messages in thread
* bug#6154: error from: describe-face font-lock-* 2010-05-10 23:04 ` David Reitter @ 2010-05-11 3:21 ` Dan Nicolaescu 2010-05-11 3:43 ` David Reitter 0 siblings, 1 reply; 6+ messages in thread From: Dan Nicolaescu @ 2010-05-11 3:21 UTC (permalink / raw) To: David Reitter; +Cc: Stefan Monnier, 6154, nathaniel.cunningham David Reitter <david.reitter@gmail.com> writes: > 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") Why would you do that? font-lock is loadup.el. > 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) ^ permalink raw reply [flat|nested] 6+ messages in thread
* bug#6154: error from: describe-face font-lock-* 2010-05-11 3:21 ` Dan Nicolaescu @ 2010-05-11 3:43 ` David Reitter 2011-07-09 18:23 ` Glenn Morris 0 siblings, 1 reply; 6+ messages in thread From: David Reitter @ 2010-05-11 3:43 UTC (permalink / raw) To: Dan Nicolaescu; +Cc: Stefan Monnier, 6154, nathaniel.cunningham On May 10, 2010, at 11:21 PM, Dan Nicolaescu wrote: >> >> add a lisp/site-load.el file with the contents >> >> (load "font-lock") > > Why would you do that? font-lock is loadup.el. Thank you, I'll remove that. Still not sure why it would make a difference, or why the symptoms are what they are... ^ permalink raw reply [flat|nested] 6+ messages in thread
* bug#6154: error from: describe-face font-lock-* 2010-05-11 3:43 ` David Reitter @ 2011-07-09 18:23 ` Glenn Morris 0 siblings, 0 replies; 6+ messages in thread From: Glenn Morris @ 2011-07-09 18:23 UTC (permalink / raw) To: 6154-done I don't see a need to keep open this particular report. Faces aren't defined in C, they are defined in Lisp. ^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2011-07-09 18:23 UTC | newest]
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[not found] <h2m20ecf6c71005092257vefcec2ffv4a4b79c39e9294e@mail.gmail.com>
2010-05-10 13:58 ` bug#6154: error from: describe-face font-lock-* David Reitter
2010-05-10 15:37 ` Stefan Monnier
2010-05-10 23:04 ` David Reitter
2010-05-11 3:21 ` Dan Nicolaescu
2010-05-11 3:43 ` David Reitter
2011-07-09 18:23 ` Glenn Morris
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