Execute compress_meta_key if convert_meta is on

lib/reline/config.rb

@@ -67,6 +67,7 @@ def initialize
     @keyseq_timeout = 500
     @test_mode = false
     @autocompletion = false
+    @convert_meta = true if seven_bit_encoding?(Reline::IOGate.encoding)
   end
 
   def reset
@@ -387,4 +388,8 @@ def parse_keyseq(str)
     end
     ret
   end
+
+  private def seven_bit_encoding?(encoding)
+    encoding == Encoding::US_ASCII
+  end
 end

lib/reline/key_stroke.rb

@@ -4,6 +4,7 @@ def initialize(config)
   end
 
   def compress_meta_key(ary)
+    return ary unless @config.convert_meta
     ary.inject([]) { |result, key|
       if result.size > 0 and result.last == "\e".ord
         result[result.size - 1] = Reline::Key.new(key, key | 0b10000000, true)

test/reline/test_config.rb

@@ -11,12 +11,14 @@ def setup
       Dir.mkdir(@tmpdir)
     end
     Dir.chdir(@tmpdir)
+    Reline.test_mode
     @config = Reline::Config.new
   end
 
   def teardown
     Dir.chdir(@pwd)
     FileUtils.rm_rf(@tmpdir)
+    Reline.test_reset
     @config.reset
   end
 
@@ -81,6 +83,22 @@ def test_string_value_with_parens_and_quotes
     assert_equal '(Emacs)', @config.instance_variable_get(:@emacs_mode_string)
   end
 
+  def test_encoding_is_ascii
+    @config.reset
+    Reline::IOGate.reset(encoding: Encoding::US_ASCII)
+    @config = Reline::Config.new
+
+    assert_equal true, @config.convert_meta
+  end
+
+  def test_encoding_is_not_ascii
+    @config.reset
+    Reline::IOGate.reset(encoding: Encoding::UTF_8)
+    @config = Reline::Config.new
+
+    assert_equal nil, @config.convert_meta
+  end
+
   def test_comment_line
     @config.read_lines([" #a: error\n"])
     assert_not_include @config.key_bindings, nil

test/reline/yamatanooroti/test_rendering.rb

@@ -739,6 +739,16 @@ def test_meta_key
       EOC
     end
 
+    def test_not_meta_key
+      start_terminal(5, 30, %W{ruby -I#{@pwd}/lib #{@pwd}/test/reline/yamatanooroti/multiline_repl}, startup_message: 'Multiline REPL.')
+      write("おだんご") # "だ" in UTF-8 contains "\xA0"
+      close
+      assert_screen(<<~EOC)
+        Multiline REPL.
+        prompt> おだんご
+      EOC
+    end
+
     def test_force_enter
       start_terminal(30, 120, %W{ruby -I#{@pwd}/lib #{@pwd}/test/reline/yamatanooroti/multiline_repl}, startup_message: 'Multiline REPL.')
       write("def hoge\nend\C-p\C-e")