Support Ruby 2.3 and above

Author: mcmire

.travis.yml

@@ -1,4 +1,6 @@
 language: ruby
 rvm:
   - 2.5.1
+  - 2.4.4
+  - 2.3.7
   - jruby-9.2.0.0

Gemfile.lock

@@ -53,10 +53,6 @@ GEM
     patience_diff (1.1.0)
       trollop (~> 1.16)
     powerpack (0.1.2)
-    pry (0.10.4)
-      coderay (~> 1.1.0)
-      method_source (~> 0.8.1)
-      slop (~> 3.4)
     pry (0.10.4-java)
       coderay (~> 1.1.0)
       method_source (~> 0.8.1)

spec/support/color_helper.rb

@@ -10,7 +10,7 @@ def initialize
       end
 
       def method_missing(name, *args, &block)
-        match = name.match(/\A(.+)_line\Z/)
+        match = name.to_s.match(/\A(.+)_line\Z/)
 
         if match
           real_name = match.captures[0]
@@ -32,7 +32,7 @@ def method_missing(name, *args, &block)
       end
 
       def respond_to_missing?(name, include_private = false)
-        match = name.match(/\A(.+)_line\Z/)
+        match = name.to_s.match(/\A(.+)_line\Z/)
 
         if match
           Csi::ColorHelper.respond_to?(match.captures[0]) || super

spec/support/integration/matchers/produce_output_when_run_matcher.rb

@@ -13,7 +13,7 @@ def initialize(expected_output)
           expected_output.
             strip.
             split(/(\n+)/).
-            map { |line| line.match?(/\n+/) ? line : (" " * 7) + line }.
+            map { |line| line =~ /\n+/ ? line : (" " * 7) + line }.
             join
       end
 

super_diff.gemspec

@@ -12,7 +12,7 @@ Gem::Specification.new do |s|
     Ruby, and gives you helpful output to show you exactly how the two data
     structures differ.
   DESC
-  s.required_ruby_version = "~> 2.5"
+  s.required_ruby_version = "~> 2.3"
 
   s.files         = ["README.md", "super_diff.gemspec"] + Dir["lib/**/*"]
   s.test_files    = Dir["spec/**/*"]