patch 7.4.1499
Problem:    No error message when :packadd does not find anything.
Solution:   Add an error message. (Hirohito Higashi)
diff --git a/runtime/doc/repeat.txt b/runtime/doc/repeat.txt
index d5d7863..1b9e54f 100644
--- a/runtime/doc/repeat.txt
+++ b/runtime/doc/repeat.txt
@@ -213,7 +213,7 @@
 			about each searched file.
 			{not in Vi}
 
-							*:pa* *:packadd*
+							*:pa* *:packadd* *E919*
 :pa[ckadd][!] {name}	Search for an optional plugin directory in 'packpath'
 			and source any plugin files found.  The directory must
 			match: