Add back fix without patch, add tests

Author: swissspidy

features/bootstrap.feature

@@ -81,3 +81,17 @@ Feature: Bootstrap WP-CLI
           Status: Inactive
       """
     And STDERR should be empty
+
+  Scenario: Mustache templates should be resolved correctly when PHAR is renamed without extension
+
+    Given an empty directory
+    And a new Phar with the same version
+    And I run `php {PHAR_PATH} core download`
+
+    When I run `cp {PHAR_PATH} wp-renamed`
+    And I run `php wp-renamed config create --dbname=wordpress --dbuser=user --dbpass=pass --skip-check`
+    Then STDOUT should contain:
+      """
+      Success: Generated 'wp-config.php' file.
+      """
+    And STDERR should be empty

php/boot-phar.php

@@ -10,7 +10,7 @@
 }
 
 // Store the path to the Phar early on for `Utils\phar-safe-path()` function.
-define( 'WP_CLI_PHAR_PATH', Phar::running( true ) );
+define( 'WP_CLI_PHAR_PATH', Phar::running( false ) );
 
 if ( file_exists( 'phar://wp-cli.phar/php/wp-cli.php' ) ) {
 	define( 'WP_CLI_ROOT', 'phar://wp-cli.phar' );