emacs-29 d17c5adc057: Fix regexp for recognizing PBM images

[Eli Zaretskii]

branch: emacs-29
commit d17c5adc05785f7c5b37f82979d10bdf5f1c2886
Author: David Ponce <da_vid@orange.fr>
Commit: Eli Zaretskii <eliz@gnu.org>

    Fix regexp for recognizing PBM images
    
    * lisp/image.el (image-type-header-regexps): Don't use [:space:],
    as its meaning depends on the current buffer's syntax tables.
    (Bug#65496)
---
 lisp/image.el | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lisp/image.el b/lisp/image.el
index 104fea407ff..d488612def8 100644
--- a/lisp/image.el
+++ b/lisp/image.el
@@ -38,7 +38,7 @@
 (defconst image-type-header-regexps
   `(("\\`/[\t\n\r ]*\\*.*XPM.\\*/" . xpm)
     ("\\`P[1-6]\\(?:\
-\\(?:\\(?:#[^\r\n]*[\r\n]\\)*[[:space:]]\\)+\
+\\(?:\\(?:#[^\r\n]*[\r\n]\\)*[ \t\r\n]\\)+\
 \\(?:\\(?:#[^\r\n]*[\r\n]\\)*[0-9]\\)+\
 \\)\\{2\\}" . pbm)
     ("\\`GIF8[79]a" . gif)