From bca8cc2c8666312a71012742dbef076f0846c281 Mon Sep 17 00:00:00 2001
From: Josh Hagins <hagins.josh@gmail.com>
Date: Sun, 5 Apr 2015 04:05:52 -0400
Subject: [PATCH] Ignore errors not in linted file

Fixes SublimeLinter/SublimeLinter3#227
---
 linter.py | 17 ++++++++++++++++-
 1 file changed, 16 insertions(+), 1 deletion(-)

diff --git a/linter.py b/linter.py
index b2d863e..74f9a23 100644
--- a/linter.py
+++ b/linter.py
@@ -20,8 +20,23 @@ class Ruby(RubyLinter):
     syntax = ('ruby', 'ruby on rails', 'rspec')
     cmd = 'ruby -wc'
     regex = (
-        r'^.+?:(?P<line>\d+): (?:(?P<error>.*?error)|(?P<warning>warning))[,:] (?P<message>[^\r\n]+)\r?\n'
+        r'^(?P<file>.+?):(?P<line>\d+): (?:(?P<error>.*?error)|(?P<warning>warning))[,:] (?P<message>[^\r\n]+)\r?\n'
         r'(?:^[^\r\n]+\r?\n^(?P<col>.*?)\^)?'
     )
     multiline = True
     comment_re = r'\s*#'
+
+    def split_match(self, match):
+        """
+        Return the components of the match.
+
+        We override this because unrelated library files can throw errors,
+        and we only want errors from the linted file.
+
+        """
+
+        if match:
+            if match.group('file') != '-':
+                match = None
+
+        return super().split_match(match)