From: "Mattias Engdegård" <mattiase@acm.org>
To: Lars Ingebrigtsen <larsi@gnus.org>,
stephen.berman@gmx.net, rgm@gnu.org, 5393@debbugs.gnu.org,
t.matsuyama.pub@gmail.com
Subject: bug#5393: Patch for lookaround assertion in regexp
Date: Thu, 27 Jun 2019 21:17:05 +0200 [thread overview]
Message-ID: <FA7028D2-1179-489B-AF24-0B4E5232E134@acm.org> (raw)
In-Reply-To: <lctyun2on2.fsf@fencepost.gnu.org>
>That looks pretty cool to me, but there was next to no discussion about this at the time (2009), which is a bit odd...
Didn't see it until now myself, and it looks useful, but perhaps it's unwise to add features that couldn't easily make it into a DFA-based engine. Positive lookahead maybe, the rest probably not. (The old engine would need to be kept around for backrefs, but those are fairly rare in actual use.)
next parent reply other threads:[~2019-06-27 19:17 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <lctyun2on2.fsf@fencepost.gnu.org>
2019-06-27 19:17 ` Mattias Engdegård [this message]
2020-08-14 13:15 ` bug#5393: Patch for lookaround assertion in regexp Lars Ingebrigtsen
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