message: C-[ and C-c should terminate search mode
diff: @@ -949,7 +949,7 @@ class CommandInsertInSearchMode extends BaseCommand {
  @RegisterAction
  class CommandEscInSearchMode extends BaseCommand {
  modes = [ModeName.SearchInProgressMode];
  - keys = ['<Esc>'];
  + keys = [['<Esc>'], ['<C-c>'], ['<C-[>']];
  runsOnceForEveryCursor() {
  return this.keysPressed[0] === '\n';
  }
  