(mime-insert-button): Remove useless `concat'.

diff --git a/semi-def.el b/semi-def.el
index fc14d79..31cfff5 100644 (file)
--- a/semi-def.el
+++ b/semi-def.el
@@ -88,7 +88,7 @@
                  (if (featurep 'xemacs)
                      (progn
                        (setq end (point))
-                       (insert (concat "[" line "]"))
+                       (insert "[" line "]")
                        (while (setq extent (extent-at start nil nil extent))
                          (set-extent-endpoints extent end (point)))
                        (delete-region start end)))