vi mode-dependent cursor shape

I would like radian to have a beam cursor (|) in vi insert mode and a block cursor in vi navigation (normal) mode.

Since both radian and IPython use prompt-toolkit, I think it will be helpful to link to the relevant prompt-toolkit issue. By including the code from the issue in my ipython_config.py file, i was able to set up IPython with a vi mode-dependent cursor:

• Insert:
• Navigation:

How could I do something similar in my .radian_profile?

[mskar]

Wow, I just pasted the relevant code from my ipython_config.py into radian/settings.py and it works! 😄

Is settings.py the right place for it? Or is it better for this to be handled by a config file?

Should I submit a pull request? I think everyone who uses the radian vi mode will want this.

import sys

from prompt_toolkit.application.current import get_app
from prompt_toolkit.key_binding.vi_state import InputMode, ViState


def get_input_mode(self):
    if sys.version_info[0] == 3:
        # Decrease input flush timeout from 500ms to 10ms.
        app = get_app()
        app.ttimeoutlen = 0.01
        app.timeoutlen = 0.2

    return self._input_mode


def set_input_mode(self, mode):
    shape = {InputMode.NAVIGATION: 2, InputMode.REPLACE: 4}.get(mode, 6)
    cursor = "\x1b[{} q".format(shape)

    if hasattr(sys.stdout, "_cli"):
        write = sys.stdout._cli.output.write_raw
    else:
        write = sys.stdout.write

    write(cursor)
    sys.stdout.flush()

    self._input_mode = mode

ViState._input_mode = InputMode.INSERT
ViState.input_mode = property(get_input_mode, set_input_mode)

[YlanAllouche]

Hey @mskar,

Thanks a lot for detailed steps. The issue was my terminal forcing a cursor shape on top of radian. This now works for me