bug#45764: icomplete in buffer completion does not work for completion-at-point

[Lars Ingebrigtsen]

simon254@mailbox.org writes:

> emacs -Q
> in *scratch* eval
> (setq icomplete-in-buffer t)
> (icomplete-mode t)
> type:
> "(icompl" followed by C-M-i (completion-at-point) select icomplete-mode via 
> C-j
> -> *scratch* buffer is now empty apart from icomplete-mode ; all other text 
> is deleted
>
> it works however in shell mode for directory completion (tab invokes 
> icomplete-mode)

(I'm going through old bug reports that unfortunately weren't resolved
at the time.)

`C-j' is bound to `icomplete-force-complete-and-exit', and it calls
`minibuffer-force-complete-and-exit' unconditionally, which deletes the
buffer contents.  I can't get icomplete-in-buffer to work in either
*shell* or in other modes -- has this feature gotten much testing/use?
Are there cases where it works?

Adding Stefan to the CCs, since he hadded this in 2013.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no