* tar-mode.el (tar-copy): Call write-region on the right buffer

(Bug#4857).

2 files changed, 9 insertions, 4 deletions

diff --git a/lisp/ChangeLog b/lisp/ChangeLog
index 0d7829302fd..81e6b9f10b2 100644
--- a/lisp/ChangeLog
+++ b/lisp/ChangeLog
@@ -1,5 +1,8 @@
 2009-11-07  Chong Yidong  <cyd@stupidchicken.com>
 
+        * tar-mode.el (tar-copy): Call write-region on the right buffer
+        (Bug#4857).
+
         * mail/rmailsum.el (rmail-summary-rmail-update): Call linum-update
         by hand, if necessary (Bug#4878).
 
diff --git a/lisp/tar-mode.el b/lisp/tar-mode.el
index 0e681f56702..eb7054d8844 100644
--- a/lisp/tar-mode.el
+++ b/lisp/tar-mode.el
@@ -909,12 +909,14 @@ the current tar-entry."
          (end (+ start size))
          (inhibit-file-name-handlers inhibit-file-name-handlers)
          (inhibit-file-name-operation inhibit-file-name-operation))
-    (save-restriction
-      (widen)
+    (with-current-buffer
+        (if (tar-data-swapped-p) tar-data-buffer (current-buffer))
       ;; Inhibit compressing a subfile again if *both* name and
       ;; to-file are handled by jka-compr
-      (if (and (eq (find-file-name-handler name 'write-region) 'jka-compr-handler)
-               (eq (find-file-name-handler to-file 'write-region) 'jka-compr-handler))
+      (if (and (eq (find-file-name-handler name 'write-region)
+                   'jka-compr-handler)
+               (eq (find-file-name-handler to-file 'write-region)
+                   'jka-compr-handler))
           (setq inhibit-file-name-handlers
                 (cons 'jka-compr-handler
                       (and (eq inhibit-file-name-operation 'write-region)