bug#65459: completing-read INITIAL-VALUE unaware of COLLECTION and REQUIRE-MATCH

[Heime]

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------- Original Message -------
On Monday, August 28th, 2023 at 6:02 AM, Stefan Monnier 
<monnier@iro.umontreal.ca> wrote:


> > > Whether the default only shows up when instructed is a UI issue,
> > > which can/should be under control of a UI customization.
> > > Could one control the UI customization programmatically as well ?
> 
> 
> Don't know what you mean by that.

> The init file is executed and hence the way the users control their
> customization is programmatic, yes, but I suspect that's not what
> you mean. > Stefan

It might be what I mean.  The users should have the ability to enable the
minibuffer prefilling for a function they write, but setting some enabling
feature using elisp code. 

After much discussion, I would need to test your ideas out in practice
and provide you with feedback.