Merge from origin/emacs-29

bc56da92d8 ; Fix error in 'tex-recenter-output-buffer'
d17c5adc05 Fix regexp for recognizing PBM images
9e9f61866e Improve wording in ELisp manual
7427efa033 Fix typo (Bug#65764)
59c6624408 ; * lisp/ido.el (ido-completion-buffer): Fix :type (bug#6...
4ec4b18c2a Fix libgccjit build on Haiku
80bdcf8f35 (regexp-tests-backtrack-optimization): Mark it as failing
8a9e653cc8 ; Add regression test for bug#65726
6fad73d7cc * src/regex-emacs.c (mutually_exclusive_p): Fix inf-loop ...
1d3d419607 ; * lisp/files.el (save-some-buffers-functions): Doc fix ...
42b14c6e5b Bump seq version to 2.24
ff5190a174 Add note on ELPA to admin/notes/bug-triage
f1e4cbe72a ; * etc/PROBLEMS: Minor wording fix.
fd5593c7f2 * etc/PROBLEMS: Mention bug#65432 and its remedy.
dd896ea1e6 Ignore errors when checking for object initializers (bug#...
3550f44c17 ; Fix typos
5b246b9b81 * CONTRIBUTE: Document making ChangeLogs with Magit.
0bd4661941 Doc fixes for obsolete functions and variables
524c0c34f2 ; * lisp/ffap.el (ffap-rfs-regexp): Fix :type (bug#65698).
f48dccc467 Merge branch 'emacs-29' of git.savannah.gnu.org:/srv/git/...
71a85e2266 A revision to the Widget manual
dbbcf4a659 Fix fontification of " in edit-kbd-macro

# Conflicts:
#	test/src/regex-emacs-tests.el

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)