bash assumes ECHO is enabled for the tty

kitty_tests/__init__.py

@@ -171,6 +171,9 @@ class PTY:
                 time.sleep(0.01)
             if cwd:
                 os.chdir(cwd)
+            new = termios.tcgetattr(sys.stdin.fileno())
+            new[3] = new[3] | termios.ECHO
+            termios.tcsetattr(sys.stdin.fileno(), termios.TCSADRAIN, new)
             os.execvpe(argv[0], argv, env or os.environ)
         os.set_blocking(self.master_fd, False)
         self.cell_width = cell_width

kitty_tests/shell_integration.py

@@ -41,8 +41,6 @@ def safe_env_for_running_shell(home_dir, rc='', shell='zsh'):
             print('set +o posix', file=f)
             # ensure LINES and COLUMNS are kept up to date
             print('shopt -s checkwinsize', file=f)
-            # Not sure why bash turns off echo in this scenario
-            print('stty echo', file=f)
             if rc:
                 print(rc, file=f)
             print(rc_inset('bash'), file=f)