vim editing mode stopped working

[klmr]

All of the sudden recently the vim editing mode stopped working. It just always uses the Emacs mode. getOption('radian.editing_mode') returns "vim".

I’m on macOS 10.14.6, radian --version is

radian version: 0.5.9
r executable: /Library/Frameworks/R.framework/Resources/bin/R
r version: 4.0.3
python executable: /usr/local/opt/python@3.9/bin/python3.9
python version: 3.9.1

I haven’t recently updated radian; however, I did update Homebrew and that led to a whole chain of other upgrades, including apparently an automatic reinstall of Python 3.9. My installed readline version is 8.1, and vim mode in other readline-enabled applications continues to work. My readline config also contains the following:

set keymap vi
set editing-mode vi
"\e": vi-movement-mode

I realise this is incredibly vague. I’m happy to collect diagnostics or do some debugging if that’s helpful, but I’d need directions where to look.

[randy3k]

radian does not use readline but prompt-toolkit. Let me check if there is any issue with python 3.9 and prompt-toolkit 2.x. For python 2 compatibility, we didn’t upgrade prompt-toolkit to the latest version. Maybe it is causing some issues.

[klmr]

Oh that’s weird:

pip3 show prompt_toolkit
WARNING: Package(s) not found: prompt_toolkit

However, manually installing it unfortunately doesn’t fix the issue.

[randy3k]

Oddly, it is working for me.

(randyimac)-~$ /usr/local/bin/radian --version
radian version: 0.5.9
r executable: /Library/Frameworks/R.framework/Resources/bin/R
r version: 4.0.3
python executable: /usr/local/opt/python@3.9/bin/python3.9
python version: 3.9.1

I have macOS 11.1, though I don't think that it is the cause.

[randy3k]

prompt_toolkit is packaged manually in https://github.com/randy3k/lineedit

[klmr]

The plot thickens: vim mode apparently still works, but now requires hitting Esc twice. I’ve no idea what might be causing this.

[randy3k]

Oops, I see what is going on. There is a new setting radian.emacs_bindings_in_vi_insert_mode which has a default value of True. And unfortunately, turning it on will add a small timeout after escape is pressed because the setting added some keybindings of the from escape + x. Without the little timeout, those keybindings won't be possible.

Add using radian.escape_key_map has the same effect.

[randy3k]

A workaround for you is to set options(radian.emacs_bindings_in_vi_insert_mode = FALSE) and make sure radian.escape_key_map is unset.

[klmr]

Thanks, that fixed it.