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回复: regular expressions that match nothing

From: net june
Subject: 回复: regular expressions that match nothing
Date: Sun, 19 May 2019 04:30:37 +0000

What about regexp-nothing or re-nothing?

发件人: Emacs-devel <emacs-devel-bounces+address@hidden> 代表 Eric Abrahamsen <address@hidden>
发送时间: 2019年5月16日 18:12
收件人: Mattias Engdegård
抄送: Stefan Monnier; address@hidden
主题: Re: regular expressions that match nothing
Mattias Engdegård <address@hidden> writes:

> tis 2019-05-14 klockan 15:41 -0400 skrev Stefan Monnier:
>> Yes, please.  I'd recommend a `regexp-` prefix for it.
> Well, since you asked so nicely!
>> [ And I'll carefully avoid having an opinion on the rest of the name.
>> ]
> The correct name is obviously something like `regexp-empty', but I have
> to concede that it might be misinterpreted. The attached patch uses
> `regexp-unmatchable' which is reasonably descriptive. Better
> suggestions are welcome.

regexp-null? It's also a little cryptic, but it's short!

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