From 9107d3c243a13e18020d01a99624bc30cbb6a20d Mon Sep 17 00:00:00 2001
From: Arfon Smith <arfon@github.com>
Date: Thu, 6 Nov 2014 13:26:40 -0600
Subject: [PATCH] Reworking most heuristics to only return one match

---
 lib/linguist/heuristics.rb | 28 ++++++++++++++++++++--------
 1 file changed, 20 insertions(+), 8 deletions(-)

diff --git a/lib/linguist/heuristics.rb b/lib/linguist/heuristics.rb
index c7519881..c2aaff0c 100644
--- a/lib/linguist/heuristics.rb
+++ b/lib/linguist/heuristics.rb
@@ -44,22 +44,31 @@ module Linguist
     # Returns an array of Languages or []
     def self.disambiguate_c(data, languages)
       matches = []
-      matches << Language["Objective-C"] if data.include?("@interface")
-      matches << Language["C++"] if data.include?("#include <cstdint>")
+      if data.include?("@interface")
+        matches << Language["Objective-C"]
+      elsif data.include?("#include <cstdint>")
+        matches << Language["C++"]
+      end
       matches
     end
 
     def self.disambiguate_pl(data, languages)
       matches = []
-      matches << Language["Prolog"] if data.include?(":-")
-      matches << Language["Perl"] if data.include?("use strict")
+      if data.include?("use strict")
+        matches << Language["Perl"]
+      elsif data.include?(":-")
+        matches << Language["Prolog"]
+      end
       matches
     end
 
     def self.disambiguate_ecl(data, languages)
       matches = []
-      matches << Language["Prolog"] if data.include?(":-")
-      matches << Language["ECL"] if data.include?(":=")
+      if data.include?(":-")
+        matches << Language["Prolog"]
+      elsif data.include?(":=")
+        matches << Language["ECL"]
+      end
       matches
     end
 
@@ -85,8 +94,11 @@ module Linguist
 
     def self.disambiguate_cl(data, languages)
       matches = []
-      matches << Language["Common Lisp"] if data.include?("(defun ")
-      matches << Language["OpenCL"] if /\/\* |\/\/ |^\}/.match(data)
+      if data.include?("(defun ")
+        matches << Language["Common Lisp"]
+      elsif /\/\* |\/\/ |^\}/.match(data)
+        matches << Language["OpenCL"]
+      end
       matches
     end