Subject: Re: bug#48841: bug#47711: bug#48841: bug#47711: [PATCH VERSION 2] Add new `completion-filter-completions` API and deferred highlighting

From: Stefan Monnier <[email-masked]>
Date: Fri, 27 Oct 2023 12:19:04 -0400

> We could, for example, have a period when we warn about returned
> non-matches. string-match-p is not free, but it's not very expensive either.

The problem is that I dislike `completion-regexp-list` :-)

More seriously, since it's a dynbound variable it can have unwanted
effects in nested calls to `all/try-completions`, so it's safer to
ignore that variable because its binding is not always "meant for us" :-(

        Stefan