From: Stefan Monnier <monnier@iro.umontreal.ca>
To: Dmitry Gutov <dgutov@yandex.ru>
Cc: Yuan Fu <casouri@gmail.com>, Emacs developers <emacs-devel@gnu.org>
Subject: Re: Add some aliases for re-related functions
Date: Sat, 02 May 2020 18:49:44 -0400 [thread overview]
Message-ID: <jwv8siaklhy.fsf-monnier+emacs@gnu.org> (raw)
In-Reply-To: <1f156067-9bf3-e588-4306-9d673a2a27b9@yandex.ru> (Dmitry Gutov's message of "Sun, 3 May 2020 01:10:30 +0300")
>> [ I'm trying to use "search" and "match" in the way it's used in
>> traditional regexp libraries. ]
> Guess I'm unfamiliar with said libraries. I'd suggest re-looking-at and
> re-looking-back (or whatever, like, don't create an alias for the last
> one if we don't want to).
Most of the literature on regular expressions concentrates on the
problem of finding whether a given string matches a given regexp, where
"matching" here means that the regexp matches the whole string.
Think of it as the case where the regexp starts with \` and ends with \'
Then there's the relaxation of "finding the longest match" (what we
call `looking-at`) and then "finding the leftmost longest match" (what
we call `string-match`).
Those two have traditionally be named `re_match` and `re_search`
respectively in C libraries (as can be seen in `src/regexp-emacs.c`).
Stefan
PS: BTW, `looking-back` doesn't do a "match" of the "longest match that
ends at point" but a "search" for the "rightmost longest match that ends
at point" since it uses `re-search-backward` internally.
next prev parent reply other threads:[~2020-05-02 22:49 UTC|newest]
Thread overview: 65+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-02 18:28 Add some aliases for re-related functions Yuan Fu
2020-05-02 18:39 ` Eli Zaretskii
2020-05-02 18:43 ` Yuan Fu
2020-05-02 21:21 ` Stefan Monnier
2020-05-02 22:27 ` Drew Adams
2020-05-03 8:33 ` Michael Albinus
2020-05-03 19:07 ` Drew Adams
2020-05-02 19:29 ` Alan Mackenzie
2020-05-02 19:48 ` Yuan Fu
2020-05-02 20:10 ` Philippe Vaucher
2020-05-02 20:13 ` Philippe Vaucher
2020-05-03 14:16 ` Eli Zaretskii
2020-05-04 3:09 ` Richard Stallman
2020-05-04 14:28 ` Eli Zaretskii
2020-05-04 17:12 ` Dmitry Gutov
2020-05-04 17:35 ` Eli Zaretskii
2020-05-04 17:42 ` Dmitry Gutov
2020-05-04 17:46 ` Eli Zaretskii
2020-05-04 17:53 ` Dmitry Gutov
2020-05-02 21:09 ` Alan Mackenzie
2020-05-02 21:51 ` Philippe Vaucher
2020-05-03 9:43 ` Alan Mackenzie
2020-05-03 15:00 ` 조성빈
2020-05-02 22:41 ` Stefan Monnier
2020-05-03 17:14 ` Alan Mackenzie
2020-05-04 10:07 ` João Távora
2020-05-03 14:16 ` Eli Zaretskii
2020-05-03 16:20 ` Yuri Khan
2020-05-03 16:42 ` Eli Zaretskii
2020-05-03 16:50 ` Dmitry Gutov
2020-05-02 21:33 ` Stefan Monnier
2020-05-02 22:10 ` Dmitry Gutov
2020-05-02 22:18 ` Eric Abrahamsen
2020-05-02 22:49 ` Stefan Monnier [this message]
2020-05-02 23:13 ` Dmitry Gutov
2020-05-03 3:55 ` Stefan Monnier
2020-05-04 0:29 ` Dmitry Gutov
2020-05-04 3:11 ` Stefan Monnier
2020-05-02 22:44 ` Drew Adams
2020-05-03 3:26 ` Stefan Monnier
2020-05-03 4:37 ` Drew Adams
2020-05-03 8:05 ` Philippe Vaucher
2020-05-03 9:55 ` Alan Mackenzie
2020-05-03 10:26 ` tomas
2020-05-03 15:15 ` Eli Zaretskii
2020-05-03 19:47 ` Drew Adams
2020-05-04 7:32 ` Philippe Vaucher
2020-05-04 8:20 ` Sending plaintext with Gmail (was: Add some aliases for re-related functions) Kévin Le Gouguec
2020-05-04 8:45 ` Philippe Vaucher
2020-05-04 15:09 ` Sending plaintext with Gmail Stefan Monnier
2020-05-04 15:25 ` Kévin Le Gouguec
2020-05-04 15:29 ` Lars Ingebrigtsen
2020-05-05 8:13 ` HTML display in Gnus (was: Sending plaintext with Gmail) Kévin Le Gouguec
2020-05-05 8:24 ` HTML display in Gnus Lars Ingebrigtsen
2020-05-05 9:26 ` Kévin Le Gouguec
2020-07-17 17:14 ` Kévin Le Gouguec
2020-05-04 15:39 ` Sending plaintext with Gmail Andreas Schwab
2020-05-04 16:51 ` Add some aliases for re-related functions Drew Adams
2020-05-04 17:10 ` Drew Adams
2020-05-04 18:17 ` Philippe Vaucher
2020-05-04 18:33 ` Drew Adams
2020-05-05 2:48 ` Richard Stallman
2020-05-04 3:08 ` Richard Stallman
2020-05-04 10:16 ` João Távora
2020-05-04 3:04 ` Richard Stallman
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