Move .tt extension to a constant

Author: spastorino

lib/thor/actions.rb

@@ -131,7 +131,7 @@ def source_paths
     # Receives a file or directory and search for it in the source paths.
     #
     def find_in_source_paths(file)
-      files = [file, "#{file}.tt"]
+      files = [file, file + TEMPLATE_EXTNAME]
       relative_root = relative_to_original_destination_root(destination_root, false)
 
       source_paths.each do |source|

lib/thor/actions/directory.rb

@@ -88,7 +88,7 @@ def execute!
               dirname = File.dirname(file_destination).gsub(/\/\.$/, '')
               next if dirname == given_destination
               base.empty_directory(dirname, config)
-            when /\.tt$/
+            when /#{TEMPLATE_EXTNAME}$/
               destination = base.template(file_source, file_destination[0..-4], config, &@block)
             else
               destination = base.copy_file(file_source, file_destination, config, &@block)

lib/thor/actions/file_manipulation.rb

@@ -108,7 +108,7 @@ def get(source, *args, &block)
     #
     def template(source, *args, &block)
       config = args.last.is_a?(Hash) ? args.pop : {}
-      destination = args.first || source.sub(/\.tt$/, '')
+      destination = args.first || source.sub(/#{TEMPLATE_EXTNAME}$/, '')
 
       source  = File.expand_path(find_in_source_paths(source.to_s))
       context = instance_eval('binding')

lib/thor/base.rb

@@ -19,6 +19,8 @@ class Thor
   THOR_RESERVED_WORDS = %w(invoke shell options behavior root destination_root relative_root
                            action add_file create_file in_root inside run run_ruby_script)
 
+  TEMPLATE_EXTNAME = '.tt'
+
   module Base
     attr_accessor :options, :parent_options, :args