bug#24317: 25.1.50; image-dired-rotate-original: regexp doesn't match .jpeg suffix

[Tino Calancha <tino.calancha@gmail.com>]

emacs -Q:

;; file: full name of a .jpeg file in your filesystem
(let ((file "/tmp/bug24317.jpeg"))
   (require 'dired)
   (require 'image-dired)
   (dired file)
   (image-dired-display-thumbs)
   (image-dired-rotate-original 90))
;; if: Only JPEG images can be rotated!


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From 4ea0333150937d3f2f615df1ed476e6279caf77b Mon Sep 17 00:00:00 2001
From: Tino Calancha <tino.calancha@gmail.com>
Date: Sat, 27 Aug 2016 16:53:37 +0900
Subject: [PATCH] image-dired-rotate-original: regexp doesn't match .jpeg
  suffix

* lisp/image-dired.el (image-dired-jpeg-suffix-regexp): New defvar.
(image-dired-rotate-original, image-dired-get-exif-file-name):
Use it (Bug#24317).
---
  lisp/image-dired.el | 8 ++++++--
  1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/lisp/image-dired.el b/lisp/image-dired.el
index 67b023d..bb43a55 100644
--- a/lisp/image-dired.el
+++ b/lisp/image-dired.el
@@ -1906,13 +1906,16 @@ image-dired-refresh-thumb
      (clear-image-cache)
      (image-dired-create-thumb file (image-dired-thumb-name file))))

+(defvar image-dired-jpeg-suffix-regexp "\\.[Jj][Pp][Ee]?[Gg]$"
+  "Regexp to match JPEG file extensions.")
+
  (defun image-dired-rotate-original (degrees)
    "Rotate original image DEGREES degrees."
    (if (not (image-dired-image-at-point-p))
        (message "No image at point")
      (let ((file (image-dired-original-file-name))
            command)
-      (if (not (string-match "\\.[jJ][pP[eE]?[gG]$" file))
+      (if (not (string-match image-dired-jpeg-suffix-regexp file))
            (error "Only JPEG images can be rotated!"))
        (setq command (format-spec
                       image-dired-cmd-rotate-original-options
@@ -1952,7 +1955,8 @@ image-dired-get-exif-file-name
  YYYY_MM_DD_HH_MM_DD_ORIG_FILE_NAME.jpg.  Used from
  `image-dired-copy-with-exif-file-name'."
    (let (data no-exif-data-found)
-    (if (not (string-match "\\.[Jj][Pp][Ee]?[Gg]$" (expand-file-name 
file)))
+    (if (not (string-match image-dired-jpeg-suffix-regexp
+                           (expand-file-name file)))
          (progn
            (setq no-exif-data-found t)
            (setq data
-- 
2.9.3


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In GNU Emacs 25.1.50.1 (x86_64-pc-linux-gnu, GTK+ Version 3.20.9)
  of 2016-08-26 built on calancha-pc
Repository revision: 1c7166a3ba399efbefc65feb8a6a41ef0dfa33a4