Tab completion behaviour in new REPL

[danielhollas]

Bug report

Bug description:

I've been playing a bit with the new REPL, it's so awesome! (thanks to @pablogsal and @ambv for the core.py episode :love_letter: )

I noticed a strange behaviour of the tab completion, whereas upon pressing the tab twice to show available options, the >>> prompt jumps down and the options are displayed above it. Please tell me this is a bug and not a feature. :sweat_smile:

After a single TAB

After the second TAB

This is on Fedora 39, built with ./configure --with-readline, in Terminator terminal. Apologies if I missed something, happy to provide more info.

CPython versions tested on:

3.13

Operating systems tested on:

Linux

Linked PRs

• gh-118939

[pablogsal]

Hi @danielhollas and thanks for opening a bug report! I am also glad you are enjoying core.py :)

Regarding the problem, maybe I am missing something but this is the behaviour also with the old REPL. Check this out:

After a single TAB

After the second TAB

I am missing something?

[danielhollas]

Oh wow, you're right :sweat_smile: So the jarring thing here is actually the fact that it is jumping up and down, since the menu is now dynamic and will disappear e.g. if you hit backspace. So I think it would make sense to change it and display it below (which is how ipython does it for example).

[pablogsal]

We can consider it as a feature for the future