Show a menu before a document

IRB should show a menu first if a completed list has plural items. But just
shows document without menu if a completed list with plural items includes a
perfect matched item. The behavior is a bug. This commit fixes it.

1 files changed, 66 insertions, 0 deletions

diff --git a/test/reline/test_key_actor_emacs.rb b/test/reline/test_key_actor_emacs.rb
index 4e3184bd3f..7ffa28ec87 100644
--- a/test/reline/test_key_actor_emacs.rb
+++ b/test/reline/test_key_actor_emacs.rb
@@ -1287,6 +1287,72 @@ class Reline::KeyActor::Emacs::Test < Reline::TestCase
     assert_line('foo_ba')
   end
 
+  def test_completion_with_perfect_match
+    @line_editor.completion_proc = proc { |word|
+      %w{
+        foo
+        foo_bar
+      }.map { |i|
+        i.encode(@encoding)
+      }
+    }
+    matched = nil
+    @line_editor.dig_perfect_match_proc = proc { |m|
+      matched = m
+    }
+    input_keys('fo')
+    assert_byte_pointer_size('fo')
+    assert_cursor(2)
+    assert_cursor_max(2)
+    assert_line('fo')
+    assert_equal(Reline::LineEditor::CompletionState::NORMAL, @line_editor.instance_variable_get(:@completion_state))
+    assert_equal(nil, matched)
+    input_keys("\C-i", false)
+    assert_byte_pointer_size('foo')
+    assert_cursor(3)
+    assert_cursor_max(3)
+    assert_line('foo')
+    assert_equal(Reline::LineEditor::CompletionState::MENU_WITH_PERFECT_MATCH, @line_editor.instance_variable_get(:@completion_state))
+    assert_equal(nil, matched)
+    input_keys("\C-i", false)
+    assert_byte_pointer_size('foo')
+    assert_cursor(3)
+    assert_cursor_max(3)
+    assert_line('foo')
+    assert_equal(Reline::LineEditor::CompletionState::PERFECT_MATCH, @line_editor.instance_variable_get(:@completion_state))
+    assert_equal(nil, matched)
+    input_keys("\C-i", false)
+    assert_byte_pointer_size('foo')
+    assert_cursor(3)
+    assert_cursor_max(3)
+    assert_line('foo')
+    assert_equal(Reline::LineEditor::CompletionState::PERFECT_MATCH, @line_editor.instance_variable_get(:@completion_state))
+    assert_equal('foo', matched)
+    matched = nil
+    input_keys('_')
+    input_keys("\C-i", false)
+    assert_byte_pointer_size('foo_bar')
+    assert_cursor(7)
+    assert_cursor_max(7)
+    assert_line('foo_bar')
+    assert_equal(Reline::LineEditor::CompletionState::MENU_WITH_PERFECT_MATCH, @line_editor.instance_variable_get(:@completion_state))
+    assert_equal(nil, matched)
+    input_keys("\C-i", false)
+    assert_byte_pointer_size('foo_bar')
+    assert_cursor(7)
+    assert_cursor_max(7)
+    assert_line('foo_bar')
+    assert_equal(Reline::LineEditor::CompletionState::PERFECT_MATCH, @line_editor.instance_variable_get(:@completion_state))
+    assert_equal(nil, matched)
+    input_keys("\C-i", false)
+    assert_byte_pointer_size('foo_bar')
+    assert_cursor(7)
+    assert_cursor_max(7)
+    assert_line('foo_bar')
+    assert_equal(Reline::LineEditor::CompletionState::PERFECT_MATCH, @line_editor.instance_variable_get(:@completion_state))
+    assert_equal('foo_bar', matched)
+  end
+
   def test_completion_with_completion_ignore_case
     @line_editor.completion_proc = proc { |word|
       %w{