Merge pull request #66 from davispuh/master

Separate auto-completion from answer type

lib/highline.rb

@@ -324,6 +324,8 @@ def choose( *items, &details )
     @menu = @question = Menu.new(&details)
     @menu.choices(*items) unless items.empty?
 
+    # Set auto-completion
+    @menu.completion = @menu.options
     # Set _answer_type_ so we can double as the Question for ask().
     @menu.answer_type = if @menu.shell
       lambda do |command|    # shell-style selection

lib/highline/question.rb

@@ -33,6 +33,7 @@ def initialize( question, answer_type )
       # initialize instance data
       @question    = question.dup
       @answer_type = answer_type
+      @completion = @answer_type
 
       @character    = nil
       @limit        = nil
@@ -65,6 +66,8 @@ def initialize( question, answer_type )
     attr_accessor :question
     # The type that will be used to convert this answer.
     attr_accessor :answer_type
+    # For Auto-completion
+    attr_accessor :completion
     #
     # Can be set to +true+ to use HighLine's cross-platform character reader
     # instead of fetching an entire line of input.  (Note: HighLine's character
@@ -421,9 +424,9 @@ def remove_whitespace( answer_string )
     # Pathname.  Any other time, this method will return an empty Array.
     #
     def selection(  )
-      if @answer_type.is_a?(Array)
-        @answer_type
-      elsif [File, Pathname].include?(@answer_type)
+      if @completion.is_a?(Array)
+        @completion
+      elsif [File, Pathname].include?(@completion)
         Dir[File.join(@directory.to_s, @glob)].map do |file|
           File.basename(file)
         end