Autocompletion for interactive programs in eshell
reddit / emacs

----------------------------------------------------------------------
The_Power_That_B · 2022-04-10 08:52

Hi, is there a way to get autocompletion for REPL-like interactive
programs like python-repl, ghci or nix-shell using eshell?
Whenever I press TAB in such programs I get a ```pcomplete-
completions-at-point failed to return valid completion data!``` and
even though the key was sent correctly, I don't see the results on the
screen
e.g. in python-repl when I press tab after ```pri``` I still see
```pri``` but what's actually entered is ```print(```.

----------------------------------------------------------------------
karthink · 2022-04-10 16:20

Are these REPLs or just command line programs?

----------------------------------------------------------------------
TelcDunedain · 2022-04-10 23:23

The two routes I can think of -

First route would have less emacs integration, add these repls to the
eshell list that launches a different shell. I think this would fix
completion.

Second route with more emacs integration would be to find a comint
configuration. Comint is an emacs mode that can be quite powerful for
integrating repls of different kinds.

I'll got out on a limb and say there are probably configs on the
internet already.

----------------------------------------------------------------------
deaddyfreddy · 2022-04-14 17:01

I prefer the 3rd approach - just "eval" code from the file (which,
actually, just sends region to some external process). Many major
modes (including sh-mode) do exactly that.