docs/userguide: provide an example of case-insensitive matching with PCRE (Thanks...

diff --git a/docs/userguide b/docs/userguide
index 597cdb51a1a1c014f00b9ea3ee452b27aa7697b2..0ee565671c038c5589acd2b4997a13eee92a6f5e 100644 (file)
--- a/docs/userguide
+++ b/docs/userguide
@@ -721,6 +721,9 @@ which have the class Firefox, use:
 *Example*:
 ------------------------------------
 bindsym mod+x [class="Firefox"] kill
+
+# same thing, but case-insensitive
+bindsym mod+x [class="(?i)firefox"] kill
 ------------------------------------
 
 The criteria which are currently implemented are: