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bug#4560: 23.1.50; (string-match "string" nil) error when typing `M-x he
bug#4560: 23.1.50; (string-match "string" nil) error when typing `M-x help RET'
Sat, 26 Sep 2009 20:28:08 -0400
Gnus/5.13 (Gnus v5.13) Emacs/23.1.50 (gnu/linux)
> Something seems to have changed in the way string-match works with its
> second argument is nil.
Actually, the problem was in help.el's use of make-help-screen.
I've installed the patch below, which should fix it,
--- lisp/help.el 14 Sep 2009 23:28:43 -0000 1.348
+++ lisp/help.el 27 Sep 2009 00:27:00 -0000
@@ -203,7 +203,9 @@
;; It can't find this, but nobody will look.
(purecopy "Type a help option: [abcCdefFgiIkKlLmnprstvw.] C-[cdefmnoptw] or
+ ;; Don't purecopy this one, because it's not evaluated (it's
+ ;; directly used as a docstring in a function definition, so it'll
+ ;; be moved to the DOC file anyway: no need for purecopying it).
"You have typed %THIS-KEY%, the help character. Type a Help option:
\(Use SPC or DEL to scroll through this text. Type \\<help-map>\\[help-quit]
to exit the Help command.)
@@ -248,7 +250,7 @@
C-o Emacs ordering and distribution information.
C-p Info about known Emacs problems.
C-t Emacs TODO list.
-C-w Information on absence of warranty for GNU Emacs.")
+C-w Information on absence of warranty for GNU Emacs."