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)

diff --git a/lisp/image.el b/lisp/image.el
index 104fea407ffb1c69d598d210ae736eadbaac86fc..d488612def85171f35b59ddc1644b26838f091be 100644 (file)
--- 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)