How to make prompt-toolkit work on dumb terminals

See original GitHub issue

On dumb terminals (TERM=dumb or TERM=unkown) prompt-toolkit behaves strangely: Some message are not displayed, it expects arrow key support, etc.

I was wondering whether it is possible to swap the Vt100Input class for a class which offers genuinely less capabilities (i.e. no cursor movement, no arrow keys, etc).

Issue Analytics

State:
Created 4 years ago
Comments:7 (3 by maintainers)

Top GitHub Comments

1reaction

halloleocommented, Dec 20, 2019

Wow, you are pretty quick with the fix!

I have tried it and it somewhat works. Examples like get-input.py or regular-language.py work fine and auto-suggestion.py, autocorrection.py and clock-input.py degrade reasonably.

However I noticed two things:

When you run confirmation-prompt.py the print result is different: under vt100 terminals it is True/False,, under dumb terminals it is y/n.
For apps using responds_to_cpr in vt100.py you still need to set the environment var PROMPT_TOOLKIT_NO_CPR for better degradation. Is there a chance to check for PROMPT_TOOLKIT_NO_CPR and for TERM=dumb?

Thanks heaps for looking into this!

0reactions

salotzcommented, Mar 5, 2020

+1 for this! My main use case is Emacs as well.

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