* Symbol's value as variable is void: selection-coding-system
@ 2008-05-22 23:49 Miles Bader
2008-05-22 23:54 ` Miles Bader
2008-05-23 19:50 ` Stefan Monnier
0 siblings, 2 replies; 5+ messages in thread
From: Miles Bader @ 2008-05-22 23:49 UTC (permalink / raw
To: emacs-devel
If I do `C-h C RET' I get that error, and doing describe-variable on
`selection-coding-system' gives:
selection-coding-system is a variable defined in `C source code'.
It is void as a variable.
Clicking on the `C source code' link results in an error: Search failed:
"\x1fVselection-coding-system "
I see that selection-coding-system _is_ defined, using defcustom, in
lisp/select.el, and was removed from C code on 2008-02-01, but something
apparently still thinks it's defined in C code...
Emacs is from CVS trunk, checked out about an hour ago, compiled with
"make bootstrap".
-Miles
--
Cat, n. A soft, indestructible automaton provided by nature to be kicked when
things go wrong in the domestic circle.
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Symbol's value as variable is void: selection-coding-system
2008-05-22 23:49 Symbol's value as variable is void: selection-coding-system Miles Bader
@ 2008-05-22 23:54 ` Miles Bader
2008-05-23 19:50 ` Stefan Monnier
1 sibling, 0 replies; 5+ messages in thread
From: Miles Bader @ 2008-05-22 23:54 UTC (permalink / raw
To: emacs-devel
I wrote:
> selection-coding-system is a variable defined in `C source code'.
> It is void as a variable.
>
> Emacs is from CVS trunk, checked out about an hour ago, compiled with
> "make bootstrap".
Oh, also, it's compiled without X support (configure --without-x), on a
GNU/linux x86-64 machine (fencepost).
-Miles
--
"1971 pickup truck; will trade for guns"
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Symbol's value as variable is void: selection-coding-system
2008-05-22 23:49 Symbol's value as variable is void: selection-coding-system Miles Bader
2008-05-22 23:54 ` Miles Bader
@ 2008-05-23 19:50 ` Stefan Monnier
2008-05-27 3:10 ` Miles Bader
1 sibling, 1 reply; 5+ messages in thread
From: Stefan Monnier @ 2008-05-23 19:50 UTC (permalink / raw
To: Miles Bader; +Cc: emacs-devel
> If I do `C-h C RET' I get that error, and doing describe-variable on
> `selection-coding-system' gives:
> selection-coding-system is a variable defined in `C source code'.
> It is void as a variable.
> Clicking on the `C source code' link results in an error: Search failed:
> "\x1fVselection-coding-system "
> I see that selection-coding-system _is_ defined, using defcustom, in
> lisp/select.el, and was removed from C code on 2008-02-01, but something
> apparently still thinks it's defined in C code...
> Emacs is from CVS trunk, checked out about an hour ago, compiled with
> "make bootstrap".
I cannot reproduce this, do you still see it? Can someone else
reproduce it? Are you using a non-X11 build or somesuch?
Stefan
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Symbol's value as variable is void: selection-coding-system
2008-05-23 19:50 ` Stefan Monnier
@ 2008-05-27 3:10 ` Miles Bader
2008-05-27 14:49 ` Stefan Monnier
0 siblings, 1 reply; 5+ messages in thread
From: Miles Bader @ 2008-05-27 3:10 UTC (permalink / raw
To: Stefan Monnier; +Cc: emacs-devel
On Fri, May 23, 2008 at 03:50:08PM -0400, Stefan Monnier wrote:
> I cannot reproduce this, do you still see it? Can someone else
> reproduce it? Are you using a non-X11 build or somesuch?
As I mentioned in a followup to that message, it's built without X support
(--without-x).
Thanks,
-Miles
--
Politics, n. A strife of interests masquerading as a contest of
principles. The conduct of public affairs for private advantage.
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Symbol's value as variable is void: selection-coding-system
2008-05-27 3:10 ` Miles Bader
@ 2008-05-27 14:49 ` Stefan Monnier
0 siblings, 0 replies; 5+ messages in thread
From: Stefan Monnier @ 2008-05-27 14:49 UTC (permalink / raw
To: Miles Bader; +Cc: emacs-devel
>> I cannot reproduce this, do you still see it? Can someone else
>> reproduce it? Are you using a non-X11 build or somesuch?
> As I mentioned in a followup to that message, it's built without X support
> (--without-x).
I think I figured it out:
- you get a "Search failed: \x1fVselection-coding-system" because Emacs
decided the variable is defined in C, but in the DOC file, there is no
\x1fVselection-coding-system within one of the build-files.
- Emacs decides that the variable is defined in C because it has
a variable-documentation property with an *integer* value (the fact
that this property is non-nil is what allows you to specify it to
descvribe-variable even tho it's void) and it doesn't appear in
load-history.
- It doesn't appear in load-history because it's not been defined.
- The variable-documentation property is added by Snarf-documentation,
which is careful to skip C files other than the ones in build-files
but is not careful to skip Elisp files that are not in load-history.
Now, why doesn't w32-valid-locales suffer from the same problem?
Because Snarf-documentation checks whether the symbol already exists
(but not whether it's bound) before adding the variable-documentation
property. And even though the selection-coding-system variable is not
defined, the symbol appears in mule.el (set-selection-coding-system) and
mule-diag.el (describe-current-coding-system).
Incidentally M-x describe-current-coding-system RET also signals an
error that selection-coding-system is void.
Stefan
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2008-05-27 14:49 UTC | newest]
Thread overview: 5+ messages (download: mbox.gz follow: Atom feed
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2008-05-22 23:49 Symbol's value as variable is void: selection-coding-system Miles Bader
2008-05-22 23:54 ` Miles Bader
2008-05-23 19:50 ` Stefan Monnier
2008-05-27 3:10 ` Miles Bader
2008-05-27 14:49 ` Stefan Monnier
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