1 files changed, 7 insertions, 3 deletions
diff --git a/transact.scm b/transact.scm
index 5dfbeb6..2928e17 100644..100755
--- a/transact.scm
+++ b/transact.scm
@@ -164,8 +164,11 @@
 (define (word:lock! path email)
   (define lockpath (word-lock:path path))
   (define at (substring? "@" email))
-  (let ((user (substring email 0 at))
-	(hostname (substring email (+ 1 at) (string-length email)))
+  (define (trim str len) (substring str 0 (min len (string-length str))))
+  (let ((user
+	 (trim (substring email 0 at) 15))
+	(hostname
+	 (trim (substring email (+ 1 at) (string-length email)) 14))
 	(oport (open-file lockpath 'wb)))
     (define userlen (string-length user))
     (and oport
@@ -199,7 +202,8 @@
 		      (slib:error lockpath 'length pos '(not = 162)))
 		  #t))
 	 (let ((certificate (word-lock:certificate lockpath)))
-	   (and (equal? email certificate) email)))))
+	   (and (equal? certificate (string-append user "@" hostname))
+		 certificate)))))
 
 (define (emacs:lock! path email)
   (define lockpath (emacs-lock:path path))