bug#41423: 27.0.91; eshell file completion in tramp dir is slow (3 minutes) [regression on pretest]

[Stefan Monnier]

>>> What is still missing IMO is a general description/documentation of the
>>> various parts of the completion mechanisms (completion-at-point,
>>> completion-in-region, pcomplete, pcomplete-completion-at-point,
>>> comint-completion-at-point, icomplete, ...) in Emacs behave and
>>> interact. I was completely lost when I started working on this bug,
>>> things are a bit clearer now, but still not very clear.
>> I find it hard to write such things because I'm too familiar with it to
>> know what's non-obvious.  Maybe you could try writing something that you'd
>> have found useful, and then we can collaboratively improve it?
> Based on the time I already spent on this bug, I guess writing something
> like this will require a substantial amount of work, but if you are willing
> to help me, I'm willing to do that.

That'd be great.  There's a chance others will chime in as well.


        Stefan