make is_absolute_path() work on Windows paths

fixes #447

diff --git a/php/WP_CLI/Runner.php b/php/WP_CLI/Runner.php
index fba607a..981716d 100644 (file)
--- a/php/WP_CLI/Runner.php
+++ b/php/WP_CLI/Runner.php
@@ -110,6 +110,10 @@ class Runner {
        }
 
        private static function is_absolute_path( $path ) {
+               // Windows
+               if ( ':' === $path[1] )
+                       return true;
+
                return $path[0] === '/';
        }