Simplified.

diff --git a/lisp/riece-alias.el b/lisp/riece-alias.el
index 9a45bd8..81362e7 100644 (file)
--- a/lisp/riece-alias.el
+++ b/lisp/riece-alias.el
@@ -101,27 +101,22 @@
 (defun riece-alias-expand-alternate-separator (string)
   (let ((index 0)
        prefix
-       server
-       length)
+       server)
     (while (and (null prefix)
                (string-match
-                (concat "\\("
+                (concat (regexp-quote riece-alias-alternate-separator)
                         (regexp-quote riece-alias-alternate-separator)
-                        "\\)+")
+                        "\\|\\("
+                        (regexp-quote riece-alias-alternate-separator)
+                        "\\)")
                 string index))
-      (setq length (/ (- (match-end 0) (match-beginning 0))
-                     (length riece-alias-alternate-separator))
-           string (replace-match
-                   (mapconcat #'identity
-                              (make-list (/ length 2)
-                                         riece-alias-alternate-separator)
-                              "")
-                   nil t string)
-           index (+ (match-beginning 0)
-                    (* (/ length 2)
-                       (length riece-alias-alternate-separator))))
-      (unless (zerop (% length 2))
-       (setq prefix (substring string 0 index))))
+      (if (match-beginning 1)          ;found a separator
+         (setq prefix (substring string 0 (match-beginning 1))
+               index (match-end 1))
+       (setq string (replace-match riece-alias-alternate-separator
+                                   nil t string)
+             index (- (match-end 0)
+                      (length riece-alias-alternate-separator)))))
     (if (null prefix)
        string
       (setq server (substring string index)
@@ -131,10 +126,10 @@
                                (concat riece-alias-alternate-separator
                                        riece-alias-alternate-separator))
                               server index)
-           (setq server (replace-match
-                         riece-alias-alternate-separator
-                         nil t server)
-                 index (1- (match-end 0))))
+           (setq server (replace-match riece-alias-alternate-separator
+                                       nil t server)
+                 index (- (match-end 0)
+                          (length riece-alias-alternate-separator))))
        (concat prefix " " server)))))
 
 (defun riece-alias-abbrev-identity-string (string)