patch 8.0.0034
Problem: No completion for ":messages".
Solution: Complete "clear" argument. (Hirohito Higashi)
diff --git a/runtime/doc/eval.txt b/runtime/doc/eval.txt
index d4a005a..88599dd 100644
--- a/runtime/doc/eval.txt
+++ b/runtime/doc/eval.txt
@@ -4287,7 +4287,9 @@
locale locale names (as output of locale -a)
mapping mapping name
menu menus
+ messages |:messages| suboptions
option options
+ packadd optional package |pack-add| names
shellcmd Shell command
sign |:sign| suboptions
syntax syntax file names |'syntax'|