From 3f6cb283657ca4bb5af243aa5f407a590eaa52ef Mon Sep 17 00:00:00 2001
From: Martin Sumner <martin.sumner@adaptip.co.uk>
Date: Mon, 13 Nov 2017 18:58:50 +0000
Subject: [PATCH] Strange issue with High Sierra

Since High Sierra upgrade having a seperate line for platform_define 17 caused issues.

OTP 19 seemingly matched against it.  OTP 18 had a redefine issue as it appeared to match against it as well.

Using this regex instead seems to work.  Why? Why was htis not an issue before High Sierra?
---
 rebar.config | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/rebar.config b/rebar.config
index d40871f..a28ea33 100644
--- a/rebar.config
+++ b/rebar.config
@@ -1,5 +1,5 @@
 {erl_opts, [warnings_as_errors,
-            {platform_define, "18", old_rand},
+            {platform_define, "^1[7-8]{1}", old_rand},
             {platform_define, "^R", old_rand},
             {platform_define, "^R", no_sync}]}.