patch 7.4.1900
Problem:    Using CTRL-] in the help on "{address}." doesn't work.
Solution:   Recognize an item in {}. (Hirohito Higashi, closes #814)
diff --git a/src/ex_cmds.c b/src/ex_cmds.c
index d83dc40..12764b4 100644
--- a/src/ex_cmds.c
+++ b/src/ex_cmds.c
@@ -6216,6 +6216,9 @@
 	     */
 	    if (*s == '\'' && s > arg && *arg == '\'')
 		break;
+	    /* Also '{' and '}'. */
+	    if (*s == '}' && s > arg && *arg == '{')
+		break;
 	  }
 	  *d = NUL;