From fb8fcf4366538e21ba0cbddf6b8f9afdc917e6d0 Mon Sep 17 00:00:00 2001
From: ueno <ueno>
Date: Mon, 11 Sep 2006 04:08:07 +0000
Subject: [PATCH] * epa-file.el (epa-file-decode-and-insert): New function
 which utilizes decode-coding-inserted-region if available.
 (epa-file-insert-file-contents): Use it.

---
 ChangeLog   |    4 ++++
 epa-file.el |   27 +++++++++++++++++++--------
 2 files changed, 23 insertions(+), 8 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index 48e1111..7edd188 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,9 @@
 2006-09-11  Daiki Ueno  <ueno@unixuser.org>
 
+	* epa-file.el (epa-file-decode-and-insert): New function which
+	utilizes decode-coding-inserted-region if available.
+	(epa-file-insert-file-contents): Use it.
+
 	* epg.el (epg--start): Specify --enable-progress-filter in
 	imitation of GPGME.
 	(epg-progress-callback-function): Remove a couple of %%'s.
diff --git a/epa-file.el b/epa-file.el
index 4a59d8d..2b47373 100644
--- a/epa-file.el
+++ b/epa-file.el
@@ -70,6 +70,21 @@
 	(inhibit-file-name-operation operation))
     (apply operation args)))
 
+(defun epa-file-decode-and-insert (string file visit beg end replace)
+  (if (fboundp 'decode-coding-inserted-region)
+      (save-restriction
+	(narrow-to-region (point) (point))
+	(let ((multibyte enable-multibyte-characters))
+	  (set-buffer-multibyte nil)
+	  (insert string)
+	  (set-buffer-multibyte multibyte)
+	  (decode-coding-inserted-region
+	   (point-min) (point-max)
+	   (substring file 0 (string-match epa-file-name-regexp file))
+	   visit beg end replace)))
+    (insert (decode-coding-string string (or coding-system-for-read
+					     'undecided)))))
+
 (defvar last-coding-system-used)
 (defun epa-file-insert-file-contents (file &optional visit beg end replace)
   (barf-if-buffer-read-only)
@@ -98,15 +113,11 @@
 		     (cons "Opening input file" (cdr error)))))
 	  (if (or beg end)
 	      (setq string (substring string (or beg 0) end)))
-	  (setq string
-		(decode-coding-string string
-				      (or coding-system-for-read 'undecided)))
-	  (if (boundp 'last-coding-system-used)
-	      (set-buffer-file-coding-system last-coding-system-used)
-	    (set-buffer-file-coding-system default-buffer-file-coding-system))
 	  (save-excursion
-	    (insert string)
-	    (setq length (length string))
+	    (save-restriction
+	      (narrow-to-region (point) (point))
+	      (epa-file-decode-and-insert string file visit beg end replace)
+	      (setq length (- (point-max) (point-min))))
 	    (if replace
 		(delete-region (point) (point-max)))))
       (if (and local-copy
-- 
1.7.10.4