(revert-buffer): If a unibyte buffer is being reverted

with a coding system for multibyte, set buffer multibyte before
calling insert-file-contents.

2 files changed, 15 insertions, 0 deletions

diff --git a/lisp/ChangeLog b/lisp/ChangeLog
index acb3e5c3a99..ad942083566 100644
--- a/lisp/ChangeLog
+++ b/lisp/ChangeLog
@@ -1,3 +1,9 @@
+2006-10-30  Kenichi Handa  <handa@m17n.org>
+
+        * files.el (revert-buffer): If a unibyte buffer is being reverted
+        with a coding system for multibyte, set buffer multibyte before
+        calling insert-file-contents.
+
 2006-10-30  Stefan Monnier  <monnier@iro.umontreal.ca>
 
         * server.el (server-select-display): Use a dummy buffer to detect when
diff --git a/lisp/files.el b/lisp/files.el
index 4b746225f60..a78d798f38b 100644
--- a/lisp/files.el
+++ b/lisp/files.el
@@ -4094,6 +4094,15 @@ non-nil, it is called instead of rereading visited file contents."
                           (if auto-save-p 'auto-save-coding
                             (or coding-system-for-read
                                 buffer-file-coding-system-explicit))))
+                     (if (and (not enable-multibyte-characters)
+                              (not (memq (coding-system-base
+                                          coding-system-for-read)
+                                         '(no-conversion raw-text))))
+                         ;; As a coding system suitable for multibyte
+                         ;; buffer is specified, make the current
+                         ;; buffer multibyte.
+                         (set-buffer-multibyte t))
+
                      ;; This force after-insert-file-set-coding
                      ;; (called from insert-file-contents) to set
                      ;; buffer-file-coding-system to a proper value.