- Patch #1307332 by pillarsdotnet: improve the docs for...

- Patch #1307332 by pillarsdotnet: improve the docs for DrupalLocalStreamWrapper::getLocalPath() function.

includes/stream_wrappers.inc

@@ -356,10 +356,18 @@ function realpath() {
   }
 
   /**
-   * Return the local filesystem path.
-   *
-   * @param $uri
-   *   Optional URI, supplied when doing a move or rename.
+   * Returns the canonical absolute path of the URI, if possible.
+   *
+   * @param string $uri
+   *   (optional) The stream wrapper URI to be converted to a canonical
+   *   absolute path. This may point to a directory or another type of file.
+   *
+   * @return string|false
+   *   If $uri is not set, returns the canonical absolute path of the URI
+   *   previously set by the DrupalStreamWrapperInterface::setUri() function.
+   *   If $uri is set and valid for this class, returns its canonical absolute
+   *   path, as determined by the realpath() function. If $uri is set but not
+   *   valid, returns FALSE.
    */
   protected function getLocalPath($uri = NULL) {
     if (!isset($uri)) {