patch 8.0.1554: custom plugins loaded with --clean
Problem: Custom plugins loaded with --clean.
Solution: Do not include the home directory in 'runtimepath'.
diff --git a/runtime/doc/starting.txt b/runtime/doc/starting.txt
index 48af7f2..2b3418b 100644
--- a/runtime/doc/starting.txt
+++ b/runtime/doc/starting.txt
@@ -516,6 +516,7 @@
- the |defaults.vim| script is loaded, which implies
'nocompatible': use Vim defaults
- no viminfo file is read or written
+ - the home directory is excluded from 'runtimepath'
*-x*
-x Use encryption to read/write files. Will prompt for a key,
which is then stored in the 'key' option. All writes will