From 3ba6b0ac567c4257291b355e7e792d1107f9cb3c Mon Sep 17 00:00:00 2001
From: Cyril Plisko <cyril.plisko@mountall.com>
Date: Sun, 16 Jul 2017 15:55:20 +0300
Subject: [PATCH] Enable rustfmt-nightly to pass the filter

rustfmt-nightly was forked from rustfmt 0.9 and its
version numbering has been reset to 0.1.0.
This commit updates the version check to reject rustfmt only
if its 0.[1-4].x version is not follwed by '-nightly' suffix.
---
 CHANGELOG.md                   | 1 +
 src/beautifiers/rustfmt.coffee | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9b29763..352c8fc 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,6 @@
 # Next
 - Fixes #1638. update type-formatter and Fixes indent size not supported
+- Add support for rustfmt-nightly
 
 # v0.30.4 (2017-07-14)
 - Fixes #1732. Improve deprecation message for old options for new Executables
diff --git a/src/beautifiers/rustfmt.coffee b/src/beautifiers/rustfmt.coffee
index 960344c..68f54f2 100644
--- a/src/beautifiers/rustfmt.coffee
+++ b/src/beautifiers/rustfmt.coffee
@@ -34,7 +34,7 @@ module.exports = class Rustfmt extends Beautifier
     else
       @run(program, ["--version"], help: help)
         .then((stdout) ->
-          if /^0\.(?:[0-4]\.[0-9])/.test(stdout.trim())
+          if /^0\.(?:[0-4]\.[0-9])(?!-nightly)/.test(stdout.trim())
             versionCheckState = false
             throw new Error("rustfmt version 0.5.0 or newer required")
           else