[ruby/reline] C for vi mode

(https://github.com/ruby/reline/pull/472)

https://github.com/ruby/reline/commit/d197be7c44

lib/reline/line_editor.rb

@@ -2563,6 +2563,13 @@ class Reline::LineEditor
   end
   alias_method :kill_line, :ed_kill_line
 
+  # Editline:: +vi_change_to_eol+ (vi command: +C+) + Kill and change from the cursor to the end of the line.
+  private def vi_change_to_eol(key)
+    ed_kill_line(key)
+
+    @config.editing_mode = :vi_insert
+  end
+
   # Editline:: +vi-kill-line-prev+ (vi: +Ctrl-U+) Delete the string from the
   #            beginning  of the edit buffer to the cursor and save it to the
   #            cut buffer.

test/reline/test_key_actor_vi.rb

@@ -1455,6 +1455,16 @@ class Reline::KeyActor::ViInsert::Test < Reline::TestCase
     assert_line('c')
   end
 
+  def test_vi_change_to_eol
+    input_keys("abcdef\C-[2hC")
+    assert_line("abc")
+    input_keys("\C-[0C")
+    assert_line("")
+    assert_cursor(0)
+    assert_cursor_max(0)
+    assert_instance_of(Reline::KeyActor::ViInsert, @config.editing_mode)
+  end
+
   def test_vi_motion_operators
     assert_instance_of(Reline::KeyActor::ViInsert, @config.editing_mode)