Drop ruby 1.x support

.travis.yml

@@ -7,8 +7,6 @@ before_install:
 bundler_args: --without development
 language: ruby
 rvm:
-  - 1.8.7
-  - 1.9.3
   - 2.0.0
   - 2.1.10
   - 2.2.10

Gemfile

@@ -1,42 +1,30 @@
 source "https://rubygems.org"
 
 gem "rake", "< 11"
-gem "rdoc", "~> 4.2.2" # This is to support Ruby 1.8 and 1.9
 
 group :development do
   gem "pry"
   platforms :ruby_21 do
     gem "pry-byebug"
   end
-  platforms :ruby_19, :ruby_20 do
+  platforms :ruby_20 do
     gem "pry-debugger"
     gem "pry-stack_explorer"
   end
 end
 
 group :test do
-  gem "addressable", "~> 2.3.6", :platforms => [:ruby_18]
   gem "childlabor"
   gem "coveralls", ">= 0.8.19"
-  gem "json", "< 2" # This is to support Ruby 1.8 and 1.9
-  gem "mime-types", "~> 1.25", :platforms => [:jruby, :ruby_18]
-  gem "rest-client", "~> 1.6.0", :platforms => [:jruby, :ruby_18]
+  gem "mime-types", "~> 1.25", :platforms => [:jruby]
+  gem "rest-client", "~> 1.6.0", :platforms => [:jruby]
   gem "rspec", ">= 3"
   gem "rspec-mocks", ">= 3"
-  gem "rubocop", ">= 0.19", :platforms => [:ruby_20, :ruby_21, :ruby_22, :ruby_23, :ruby_24]
+  gem "rubocop", ">= 0.19"
   gem "simplecov", ">= 0.13"
-  gem "term-ansicolor", "~> 1.3.2" # This is to support Ruby 1.8 and 1.9
-  gem "tins", "< 1.7" # This is to support Ruby 1.8 and 1.9
-  if RUBY_VERSION < "1.9.3"
-    gem "webmock", ">= 1.20", "< 2" # This is to support Ruby 1.8 and 1.9.2
-    gem "hashdiff", "< 0.3.6" # Hashdiff 0.3.6 no longer supports Ruby 1.8
-  else
-    gem "webmock"
-  end
-  if RUBY_VERSION >= '1.9'
-    # `did_you_mean` can't build with Ruby 1.8.
-    gem 'did_you_mean'
-  end
+  gem "webmock"
 end
 
+gem 'did_you_mean'
+
 gemspec

lib/thor/base.rb

@@ -1,6 +1,5 @@
 require "thor/command"
 require "thor/core_ext/hash_with_indifferent_access"
-require "thor/core_ext/ordered_hash"
 require "thor/error"
 require "thor/invocation"
 require "thor/parser"
@@ -353,22 +352,22 @@ def group(name = nil)
       # Returns the commands for this Thor class.
       #
       # ==== Returns
-      # OrderedHash:: An ordered hash with commands names as keys and Thor::Command
-      #               objects as values.
+      # Hash:: An ordered hash with commands names as keys and Thor::Command
+      #        objects as values.
       #
       def commands
-        @commands ||= Thor::CoreExt::OrderedHash.new
+        @commands ||= Hash.new
       end
       alias_method :tasks, :commands
 
       # Returns the commands for this Thor class and all subclasses.
       #
       # ==== Returns
-      # OrderedHash:: An ordered hash with commands names as keys and Thor::Command
-      #               objects as values.
+      # Hash:: An ordered hash with commands names as keys and Thor::Command
+      #        objects as values.
       #
       def all_commands
-        @all_commands ||= from_superclass(:all_commands, Thor::CoreExt::OrderedHash.new)
+        @all_commands ||= from_superclass(:all_commands, Hash.new)
         @all_commands.merge!(commands)
       end
       alias_method :all_tasks, :all_commands

lib/thor/command.rb

@@ -97,8 +97,7 @@ def sans_backtrace(backtrace, caller) #:nodoc:
     def handle_argument_error?(instance, error, caller)
       not_debugging?(instance) && (error.message =~ /wrong number of arguments/ || error.message =~ /given \d*, expected \d*/) && begin
         saned = sans_backtrace(error.backtrace, caller)
-        # Ruby 1.9 always include the called method in the backtrace
-        saned.empty? || (saned.size == 1 && RUBY_VERSION >= "1.9")
+        saned.empty? || saned.size == 1
       end
     end
 

lib/thor/line_editor/basic.rb

@@ -24,7 +24,7 @@ def get_input
           $stdin.gets
         else
           # Lazy-load io/console since it is gem-ified as of 2.3
-          require "io/console" if RUBY_VERSION > "1.9.2"
+          require "io/console"
           $stdin.noecho(&:gets)
         end
       end

lib/thor/line_editor/readline.rb

@@ -13,10 +13,7 @@ def self.available?
       def readline
         if echo?
           ::Readline.completion_append_character = nil
-          # Ruby 1.8.7 does not allow Readline.completion_proc= to receive nil.
-          if complete = completion_proc
-            ::Readline.completion_proc = complete
-          end
+          ::Readline.completion_proc = completion_proc
           ::Readline.readline(prompt, add_to_history?)
         else
           super