v.pref: handle `|` as separators in -path option parsing again (as documented in the help)

vlib/v/builder/compile.v

@@ -168,8 +168,7 @@ pub fn (v Builder) get_builtin_files() []string {
 		return []
 	}
 	*/
-	// println('get_builtin_files() lookuppath:')
-	// println(v.pref.lookup_path)
+	v.log('v.pref.lookup_path: $v.pref.lookup_path')
 	// Lookup for built-in folder in lookup path.
 	// Assumption: `builtin/` folder implies usable implementation of builtin
 	for location in v.pref.lookup_path {

vlib/v/pref/pref.v

@@ -286,7 +286,7 @@ pub fn parse_args(args []string) (&Preferences, string) {
 			}
 			'-path' {
 				path := cmdline.option(current_args, '-path', '')
-				res.lookup_path = path.split(os.path_delimiter)
+				res.lookup_path = path.replace('|', os.path_delimiter).split(os.path_delimiter)
 				i++
 			}
 			'-custom-prelude' {