Expand return documentation for r84357

diff --git a/includes/parser/Parser.php b/includes/parser/Parser.php
index e462ccd..2640a98 100644 (file)
--- a/includes/parser/Parser.php
+++ b/includes/parser/Parser.php
@@ -5162,6 +5162,8 @@ class Parser {
         * @param $newText String: replacement text for section data.
         * @return String: for "get", the extracted section text.
         *                 for "replace", the whole page with the section replaced.
+        *                 If the page is empty and section 0 is requested, $text (as '')
+        *                  is returned
         */
        private function extractSections( $text, $section, $mode, $newText='' ) {
                global $wgTitle; # not generally used but removes an ugly failure mode