diff -r 0ad2ffbf6b38 -r 218d5b9aa466 mercurial/commands.py
--- a/mercurial/commands.py	Sat Feb 09 18:58:31 2008 +0100
+++ b/mercurial/commands.py	Sat Feb 09 19:13:57 2008 +0100
@@ -963,7 +963,7 @@
     try:
         regexp = re.compile(pattern, reflags)
     except Exception, inst:
-        ui.warn(_("grep: invalid match pattern: %s!\n") % inst)
+        ui.warn(_("grep: invalid match pattern: %s\n") % inst)
         return None
     sep, eol = ':', '\n'
     if opts['print0']: