(image-file-name-extensions): Add "pgm" and "ppm".

diff --git a/lisp/image-file.el b/lisp/image-file.el
index ef667085eacab69f06eb91f433a58d49b4f6bf59..87314f3b90ca03acdcf3eda37fd5d88ded42e678 100644 (file)
--- a/lisp/image-file.el
+++ b/lisp/image-file.el
@@ -38,7 +38,7 @@
 
 ;;;###autoload
 (defcustom image-file-name-extensions
-  '("png" "jpeg" "jpg" "gif" "tiff" "xbm" "xpm" "pbm")
+  '("png" "jpeg" "jpg" "gif" "tiff" "xbm" "xpm" "pbm" "pgm" "ppm")
   "*A list of image-file filename extensions.
 Filenames having one of these extensions are considered image files,
 in addition to those matching `image-file-name-regexps'.