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/src/os_dos.h b/src/os_dos.h
index 0edc3e0..bb8b308 100644
--- a/src/os_dos.h
+++ b/src/os_dos.h
@@ -125,6 +125,7 @@
#define DFLT_ERRORFILE "errors.err"
#define DFLT_RUNTIMEPATH "$HOME/vimfiles,$VIM/vimfiles,$VIMRUNTIME,$VIM/vimfiles/after,$HOME/vimfiles/after"
+#define CLEAN_RUNTIMEPATH "$VIM/vimfiles,$VIMRUNTIME,$VIM/vimfiles/after"
#define CASE_INSENSITIVE_FILENAME /* ignore case when comparing file names */
#define SPACE_IN_FILENAME