Fix #2394 drush_is_windows().

drush-ops · Oct 20, 2016 · c391c29 · c391c29
1 parent 2b44148
commit c391c29
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/includes/startup.inc b/includes/startup.inc
@@ -128,8 +128,8 @@ function find_wrapper_or_launcher_at_location($location) {
 /**
  * Determine whether current OS is a Windows variant.
  */
-function drush_is_windows($os = PHP_OS) {
-  return strtoupper(substr($os, 0, 3)) === 'WIN';
+function drush_is_windows($os = NULL) {
+  return strtoupper(substr($os ?: PHP_OS, 0, 3)) === 'WIN';
 }
 
 function drush_escapeshellarg($arg, $os = NULL, $raw = FALSE) {