Escape exclamation symbol

git-svn-id: https://klish.googlecode.com/svn/trunk@541 0eaa4687-2ee9-07dd-09d9-bcdd2d2dd5fb

lub/string/string_escape.c

@@ -6,7 +6,7 @@
 #include <stdlib.h>
 #include <string.h>
 
-const char *lub_string_esc_default = "`|$<>&()#;\\\"";
+const char *lub_string_esc_default = "`|$<>&()#;\\\"!";
 const char *lub_string_esc_regex = "^$.*+[](){}";
 const char *lub_string_esc_quoted = "\\\"";