Use get-language-info to get the default coding-system.

diff --git a/lisp/riece-log.el b/lisp/riece-log.el
index cbdad44..e1c0a74 100644 (file)
--- a/lisp/riece-log.el
+++ b/lisp/riece-log.el
@@ -98,8 +98,11 @@ It is created if there is at least one instance of Emacs running riece-log.")
 
 (defun riece-log-display-message-function (message)
   (if riece-log-enabled
-      (let ((coding-system-for-write (or riece-log-coding-system
-                                        default-buffer-file-coding-system))
+      (let ((coding-system-for-write
+            (if (featurep 'mule)
+                (or riece-log-coding-system
+                    (car (get-language-info current-language-environment
+                                            'coding-system)))))
            (file (riece-log-make-file-name (riece-message-target message)
                                            coding-system-for-write))
            file-name-coding-system
@@ -112,9 +115,12 @@ It is created if there is at least one instance of Emacs running riece-log.")
                      riece-log-lock-file))))
 
 (defun riece-log-make-file-name (identity coding-system)
-  (expand-file-name (format "%s.txt.%s"
-                           (format-time-string "%Y%m%d")
-                           coding-system)
+  (expand-file-name (if (featurep 'mule)
+                       (format "%s.txt.%s"
+                               (format-time-string "%Y%m%d")
+                               coding-system)
+                     (format "%s.txt"
+                               (format-time-string "%Y%m%d")))
                    (riece-log-directory identity)))
 
 (defun riece-log-list-files (identity time)