* bug#66570: 29.1; Regression when printing option set with value of wrong type
@ 2023-10-15 21:25 Drew Adams
2023-10-23 14:53 ` Eli Zaretskii
0 siblings, 1 reply; 2+ messages in thread
From: Drew Adams @ 2023-10-15 21:25 UTC (permalink / raw)
To: 66570
emacs -Q
Evaluate (customize-set-variable 'fill-column nil).
No message or error about improver value (just as in previous releases).
C-h v fill-column
An error is raised, but the *Compile-Log* message doesn't say what
function raised the error:
z:/path/to/Emacs-29.1.2/share/emacs/29.1/lisp/emacs-lisp/cl-print.elc:
Error: Wrong type argument: number-or-marker-p, nil
And why does is the error message shown in that buffer?
C-h v fill-column ; Repeat it.
Another error is raised, producing this incomprehensible error msg (this
time it is not shown in *Compile-Log*):
Symbol's function definition is void: t
What function is void, `t'?
Buffer *Messages* shows this:
cl--generic-make-next-function: Symbol's function definition is void: t
In previous releases there is no such problem. The improper value is
just shown in buffer *Help*.
[Arguably, options defined in C should maybe have a non-nil property
`custom-set', with the proper :set function, so that using
`customize-set-variable' raises an error when setting to an improper
value. But that too would be backward-incompatible.]
In Emacs 28.2, you get a similar wrong-type-argument error in
*Compile-Log*, but identifiying seq.elc, not cl-print.elc. And in Emacs
28.2 the *Help* buffer is shown normally (as in previous releases).
In Emacs 27 and prior there is no confusing display of buffer
*Compile-Log* with its error message that is only half-helpful.
In GNU Emacs 29.1 (build 2, x86_64-w64-mingw32) of 2023-08-02 built on
AVALON
Windowing system distributor 'Microsoft Corp.', version 10.0.19045
System Description: Microsoft Windows 10 Pro (v10.0.2009.19045.3448)
Configured using:
'configure --with-modules --without-dbus --with-native-compilation=aot
--without-compress-install --with-tree-sitter CFLAGS=-O2'
Configured features:
ACL GIF GMP GNUTLS HARFBUZZ JPEG JSON LCMS2 LIBXML2 MODULES NATIVE_COMP
NOTIFY W32NOTIFY PDUMPER PNG RSVG SOUND SQLITE3 THREADS TIFF
TOOLKIT_SCROLL_BARS TREE_SITTER WEBP XPM ZLIB
(NATIVE_COMP present but libgccjit not available)
^ permalink raw reply [flat|nested] 2+ messages in thread
* bug#66570: 29.1; Regression when printing option set with value of wrong type
2023-10-15 21:25 bug#66570: 29.1; Regression when printing option set with value of wrong type Drew Adams
@ 2023-10-23 14:53 ` Eli Zaretskii
0 siblings, 0 replies; 2+ messages in thread
From: Eli Zaretskii @ 2023-10-23 14:53 UTC (permalink / raw)
To: Drew Adams; +Cc: 66570
tags 66570 wontfix
close 66570
thanks
> From: Drew Adams <drew.adams@oracle.com>
> Date: Sun, 15 Oct 2023 21:25:00 +0000
>
> emacs -Q
>
> Evaluate (customize-set-variable 'fill-column nil).
>
> No message or error about improver value (just as in previous releases).
Emacs 29 has setopt, so you should use that instead. It will display
a warning when a variable is set to a value that it doesn't support.
Or use the command customize-option.
> C-h v fill-column
>
> An error is raised, but the *Compile-Log* message doesn't say what
> function raised the error:
>
> z:/path/to/Emacs-29.1.2/share/emacs/29.1/lisp/emacs-lisp/cl-print.elc:
> Error: Wrong type argument: number-or-marker-p, nil
Yes. Actually, errors start popping up before that, because the value
of fill-column is bogus. Just don't do that (and use setopt to make
sure you don't inadvertently set a variable to a bad value).
I don't think we should do anything here, as this is a clear cockpit
error that can nowadays be avoided by using a different API.
So I'm closing this bug.
^ permalink raw reply [flat|nested] 2+ messages in thread
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2023-10-15 21:25 bug#66570: 29.1; Regression when printing option set with value of wrong type Drew Adams
2023-10-23 14:53 ` Eli Zaretskii
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