From: Stefan Monnier <monnier@iro.umontreal.ca>
To: "Mattias Engdegård" <mattiase@acm.org>
Cc: emacs-devel@gnu.org
Subject: Re: Regexp error scan (March 26)
Date: Wed, 27 Mar 2019 10:45:58 -0400 [thread overview]
Message-ID: <jwvva041imh.fsf-monnier+emacs@gnu.org> (raw)
In-Reply-To: <045E4E1D-EF0B-41A8-809D-48F38AABD602@acm.org> ("Mattias Engdegård"'s message of "Wed, 27 Mar 2019 15:41:06 +0100")
>>>> (regexp-opt-charset (append erc-lurker-ignore-chars nil))
>> Why do we need the append-nil thingy?
>> Does regexp-opt-charset modify its argument by side-effect?
>
> No, it's a way to convert a string to a list of characters which is what regexp-opt-charset expects.
> (mapcar #'identity ...) would also work, but this is a little shorter.
Ah, good. But it would deserve a comment,
Stefan
next prev parent reply other threads:[~2019-03-27 14:45 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-03-26 17:38 Regexp error scan (March 26) Mattias Engdegård
2019-03-27 2:10 ` Paul Eggert
2019-03-27 3:43 ` Basil L. Contovounesios
2019-03-27 9:14 ` Mattias Engdegård
2019-03-27 13:55 ` Andy Moreton
2019-03-27 14:36 ` Stefan Monnier
2019-03-27 14:41 ` Mattias Engdegård
2019-03-27 14:45 ` Stefan Monnier [this message]
2019-03-27 14:49 ` Noam Postavsky
2019-03-27 15:45 ` Mattias Engdegård
2019-03-27 15:48 ` Stefan Monnier
2019-03-27 18:50 ` Paul Eggert
2019-03-27 15:28 ` Damien Collard
2019-03-27 12:09 ` Mattias Engdegård
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