updated for version 7.4.509
Problem:    Users are not aware their encryption is weak.
Solution:   Give a warning when prompting for the key.
diff --git a/src/ex_docmd.c b/src/ex_docmd.c
index 35e44f0..e90a36e 100644
--- a/src/ex_docmd.c
+++ b/src/ex_docmd.c
@@ -11524,6 +11524,7 @@
 ex_X(eap)
     exarg_T	*eap UNUSED;
 {
+    crypt_check_current_method();
     (void)crypt_get_key(TRUE, TRUE);
 }
 #endif