diff --git a/doc/mytest.cfg b/doc/mytest.cfg
index be1118c46..1385e493d 100644
--- a/doc/mytest.cfg
+++ b/doc/mytest.cfg
@@ -3,6 +3,7 @@
 
 [Common]
 cc=gcc     # '=' and ':' are the same
+--foo="bar"   # '--cc' and 'cc' are the same, 'bar' and '"bar"' are the same
 --verbose
 
 [Windows]