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Re: :alnum: broken?

From: Stefan Monnier
Subject: Re: :alnum: broken?
Date: Tue, 25 Feb 2020 09:37:35 -0500
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux)

> Maybe there is a way to do it that won't be confusing.
> If it waits until you type RET to finish the regexp.
> then flashes a warning on the screen for two seconds or until there is
> more input, it might be clear and not annoying.

We could also have `read-regexp` show a warning *on the side* while you
type the input, a bit like isearch does when the regexp is

It would also make sense to make `read-regexp` emit such warnings about
incomplete/invalid regexps.


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