bug#50459: 28.0.50; Python shell completion is incompatible with flex, orderless, etc.

[Dmitry Gutov]

On 09.09.2021 19:46, Augusto Stoffel wrote:
> To alleviate this, the completion-at-point function could implement some
> sort of caching.  The difficult question is when to invalidate the
> cache.  I've attached one possiblility as a draft patch.  If the
> approach seems reasonable, then I'll format it properly.

It's much simpler than what we talked about, but given that 
python-shell-completion-at-point doesn't really look past the current 
line, your approach should work fine.

I'm not very familiar with the code, so I cannot approve the exact 
patch, though, sorry.

As a bonus, though, maybe add the position of prompt on the shell-buffer 
to the invalidation key? Like, if a user imports some new lib in there, 
that can bring in new completions.