Re: Add completion to compilation-read-command

[Philip Kaludercic <philipk@posteo.net>]

Spyros Roum <spyros.roum@posteo.net> writes:

> Juri Linkov wrote:
>>>> You can use 'C-x <up>' in the compile prompt to complete on past commands.
>>> This is indeed a lot closer to what I want, however it still lacks a lot of
>>> things compared to my solution.
>>>
>>> Unless there is some package/mode I don't know about, It's a lot less
>>> dynamic, for instance I can't keep typing to reduce possible items.
>> There were many proposals how to implement `eager-update' to update
>> *Completions* as you type.  We just need to put together all parts.
>
> I'm probably out of my depth here, as I'm not very familiar with
> *Completions*.
> Is there a good reason to stick to it when `completing-read` works
> well and as far as I can tell
> does a very similar/the same job?

*Completions* is just the buffer that pops up by default when
completing-read cannot expand the input unambiguously anymore?

> I have a patch almost ready based on Philip's feedback that I will be
> sharing today or tomorrow.
> If, however, the consensus is that it's not a good fit and that `C-x
> <up>` and *Completions* is good enough,
> that's fine by me.

I don't see a harm in having an additional user option.  Why, it might
even be a popular thing to allow all shell commands prompts to fall back
onto completing-read, considering how evil users apparently cannot make
use of C-r?

Eli Zaretskii <eliz@gnu.org> writes:

>> From: Juri Linkov <juri@linkov.net>
>> Cc: philipk@posteo.net,  emacs-devel@gnu.org
>> Date: Tue, 24 Dec 2024 19:03:50 +0200
>> 
>> > I'm trying to get the compile prompt to suggest completion based on past
>> > commands I've run.
>> 
>> You can use 'C-x <up>' in the compile prompt to complete on past commands.
>
> Why the heck is this useful command completely undocumented??

I second this confusion, and want to mention that the binding is not
that convenient + might be shadowed for windmove users.