From e1eb36050ef4f6adbf8bc1a42464ef420a64dae0 Mon Sep 17 00:00:00 2001
From: TheGoddessInari <thegoddessinari@gmail.com>
Date: Mon, 25 Mar 2019 22:00:39 -0700
Subject: [PATCH] Default mach.bat to using py -2.

Servo already assumes the user has Python, this is the primary
way to make sure that Python 2 is preferred, and you should
get a sensible error message if you have python 3 but not 2.

But first, check that py.exe exists because if a system has only
Python 2.x only, it won't have it. If it doesn't, then try python.exe.
---
 mach.bat | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/mach.bat b/mach.bat
index 077bd574083..a270b583801 100644
--- a/mach.bat
+++ b/mach.bat
@@ -36,4 +36,9 @@ IF EXIST "%VS_VCVARS%" (
 
 popd
 
-python mach %*
+where /Q py.exe
+IF %ERRORLEVEL% NEQ 0 (
+  python mach %*
+) ELSE (
+  py -2 mach %*
+)