patch 7.4.2209
Problem:    Cannot map <M-">. (Stephen Riehm)
Solution:   Solve the memory access problem in another way. (Dominique Pelle)
            Allow for using <M-\"> in a string.
diff --git a/src/gui_mac.c b/src/gui_mac.c
index b78c903..d750b3b 100644
--- a/src/gui_mac.c
+++ b/src/gui_mac.c
@@ -4830,7 +4830,7 @@
 	char_u	    *p_actext;
 
 	p_actext = menu->actext;
-	key = find_special_key(&p_actext, &modifiers, FALSE, FALSE);
+	key = find_special_key(&p_actext, &modifiers, FALSE, FALSE, FALSE);
 	if (*p_actext != 0)
 	    key = 0; /* error: trailing text */
 	/* find_special_key() returns a keycode with as many of the