From: Marcin Borkowski <mbork@mbork.pl>
To: Help Gnu Emacs mailing list <help-gnu-emacs@gnu.org>
Subject: How are regexen implemented in Emacs?
Date: Mon, 12 Dec 2022 18:15:29 +0100 [thread overview]
Message-ID: <87a63see6m.fsf@mbork.pl> (raw)
Hi all,
some time ago I read (well, skimmed) this article:
https://swtch.com/~rsc/regexp/regexp1.html
I looked at
https://www.gnu.org/software/emacs/manual/html_node/elisp/Regexp-Problems.html
and started to wonder if the hints there mean that Emacs has a "naive",
backtracking regex engine or a FA-based one?
Before I get yelled at, let me make it clear: I'm not accusing Emacs
devs of sloppy programming. In fact, my confusion might result from me
not understanding something. But the warnings in the manual about some
regexen being slow worry me a tiny little bit.
Best,
--
Marcin Borkowski
http://mbork.pl
next reply other threads:[~2022-12-12 17:15 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-12-12 17:15 Marcin Borkowski [this message]
2022-12-12 18:16 ` How are regexen implemented in Emacs? Stefan Monnier via Users list for the GNU Emacs text editor
2022-12-12 19:09 ` Marcin Borkowski
2022-12-12 19:17 ` Stefan Monnier via Users list for the GNU Emacs text editor
2022-12-12 20:31 ` Marcin Borkowski
2022-12-12 21:19 ` Stefan Monnier
2022-12-13 5:01 ` tomas
2022-12-13 16:16 ` Stefan Monnier via Users list for the GNU Emacs text editor
2022-12-15 5:22 ` Emanuel Berg
2022-12-16 17:39 ` Akib Azmain Turja
2022-12-17 0:31 ` Emanuel Berg
2022-12-18 0:54 ` Jean Louis
2022-12-19 20:31 ` Emanuel Berg
2022-12-12 20:01 ` tomas
2022-12-12 20:32 ` Marcin Borkowski
2022-12-12 21:24 ` Stefan Monnier via Users list for the GNU Emacs text editor
2022-12-15 5:18 ` Emanuel Berg
2022-12-15 13:38 ` tomas
2022-12-15 16:46 ` Stefan Monnier via Users list for the GNU Emacs text editor
2022-12-15 17:56 ` tomas
2022-12-17 0:13 ` Emanuel Berg
2022-12-15 3:45 ` Emanuel Berg
2022-12-15 13:22 ` tomas
2022-12-15 3:41 ` Emanuel Berg
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