From: Steffen Nurpmeso <steffen@sdaoden.eu>
To: Tony Finch <dot@dotat.at>
Cc: The Eunuchs Hysterical Society <tuhs@tuhs.org>
Subject: Re: [TUHS] v7 K&R C
Date: Sun, 17 May 2020 01:53:08 +0200 [thread overview]
Message-ID: <20200516235308.icuQH%steffen@sdaoden.eu> (raw)
In-Reply-To: <alpine.DEB.2.20.2005142316170.3374@grey.csi.cam.ac.uk>
Tony Finch wrote in
<alpine.DEB.2.20.2005142316170.3374@grey.csi.cam.ac.uk>:
|Larry McVoy <lm@mcvoy.com> wrote:
|>
|> It's got some perl goodness, regexps are part of the syntax, ....
|
|I got into Unix after perl and I've used it a lot. Back in the 1990s I saw
|Henry Spencer's joke that perl was the Swiss Army Chainsaw of Unix, as a
|riff on lex being its Swiss Army Knife. I came to appreciate lex
|regrettably late: lex makes it remarkably easy to chew through a huge pile
|of text and feed the pieces to some library code written in C. I've been
|using re2c recently (http://re2c.org/), which is differently weird than
|lex, though it still uses YY in all its variable names. It's remarkable
|how much newer lexer/parser generators can't escape from the user
|interface of lex/yacc. Another YY example: http://www.hwaci.com/sw/lemon/
P.S.: i really hate automated lexers. I never ever got used to
use them. For learning i once tried to use flex/bison, but
i failed really hard. I like that blood, sweat and tears thing,
and using a lexer seems so shattered, all the pieces. And i find
them really hard to read.
If you can deal with them they are surely a relief, especially in
rapidly moving syntax situations. But if i look at settled source
code which uses it, for example usr.sbin/ospfd/parse.y, or
usr.sbin/smtpd/parse.y, both of OpenBSD, then i feel lost and am
happy that i do not need to maintain that code.
--steffen
|
|Der Kragenbaer, The moon bear,
|der holt sich munter he cheerfully and one by one
|einen nach dem anderen runter wa.ks himself off
|(By Robert Gernhardt)
next prev parent reply other threads:[~2020-05-16 23:53 UTC|newest]
Thread overview: 153+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-25 1:59 Adam Thornton
2020-04-25 2:37 ` Charles Anthony
2020-04-25 2:47 ` Adam Thornton
2020-04-25 2:51 ` Rob Pike
2020-04-25 2:54 ` Rob Pike
2020-04-25 3:04 ` Larry McVoy
2020-04-25 3:30 ` Clem Cole
2020-04-25 3:43 ` Larry McVoy
2020-04-25 3:54 ` Jon Steinhart
2020-04-25 11:44 ` Michael Kjörling
2020-04-25 13:17 ` Dan Cross
2020-05-11 0:28 ` scj
2020-05-11 0:32 ` Rob Pike
2020-05-11 0:57 ` Larry McVoy
2020-05-11 17:32 ` Greg A. Woods
2020-05-11 18:25 ` Paul Winalski
2020-05-11 18:37 ` Clem Cole
2020-05-11 19:12 ` Paul Winalski
2020-05-11 19:57 ` joe mcguckin
2020-05-11 20:25 ` Larry McVoy
2020-05-12 17:23 ` Paul Winalski
2020-05-12 17:35 ` ron
2020-05-12 17:42 ` Larry McVoy
2020-05-12 18:36 ` Paul Winalski
2020-05-13 23:36 ` Dave Horsfall
2020-05-14 0:42 ` John P. Linderman
2020-05-14 2:44 ` Rich Morin
2020-05-14 3:09 ` Charles Anthony
2020-05-14 12:27 ` ron
2020-05-14 12:27 ` ron
2020-05-14 12:27 ` ron
2020-05-14 7:38 ` Dave Horsfall
2020-05-14 12:25 ` ron
2020-05-14 17:13 ` Paul Winalski
2020-05-14 17:21 ` Larry McVoy
2020-05-17 16:34 ` Derek Fawcus
2020-05-14 4:21 ` Greg A. Woods
2020-05-14 4:40 ` Warner Losh
2020-05-14 17:32 ` Larry McVoy
2020-05-14 22:32 ` Tony Finch
2020-05-16 23:53 ` Steffen Nurpmeso [this message]
2020-05-16 23:59 ` [TUHS] v7 K&R C [really lexers] Jon Steinhart
2020-05-17 0:04 ` Brantley Coile
2020-05-17 1:23 ` Warner Losh
2020-05-17 1:36 ` Brantley Coile
2020-06-13 21:24 ` scj
2020-06-14 8:47 ` arnold
2020-06-14 12:52 ` Richard Salz
2020-06-14 14:03 ` Ralph Corderoy
2020-06-14 14:26 ` arnold
2020-06-14 14:48 ` Ralph Corderoy
2020-06-15 1:12 ` Warren Toomey
2020-06-15 1:29 ` Warren Toomey
2020-06-15 6:06 ` arnold
2020-05-17 16:31 ` Paul Winalski
2020-05-17 0:35 ` [TUHS] v7 K&R C Larry McVoy
2020-05-11 18:37 ` Larry McVoy
2020-05-11 2:08 ` Lawrence Stewart
2020-05-11 11:36 ` Michael Kjörling
2020-04-25 3:37 ` Dave Horsfall
2020-04-27 13:19 ` Tony Finch
2020-04-25 2:50 ` Adam Thornton
2020-04-25 5:59 ` Lars Brinkhoff
2020-04-25 13:11 Noel Chiappa
2020-04-25 13:18 ` Rob Pike
2020-04-25 14:57 ` Warner Losh
2020-04-25 18:03 ` Noel Chiappa
2020-04-25 20:11 ` Michael Kjörling
2020-04-25 21:27 ` Brian L. Stuart
2020-04-26 0:07 ` emanuel stiebler
2020-04-26 0:54 ` Rob Pike
2020-04-26 19:37 ` Derek Fawcus
2020-04-26 20:10 ` Derek Fawcus
2020-04-26 21:59 ` Rich Morin
2020-04-26 22:38 ` Noel Hunt
2020-04-26 23:57 ` Nemo Nusquam
2020-04-27 3:38 ` Rob Pike
2020-04-25 13:35 ` Hellwig Geisse
2020-04-25 13:59 ` Richard Salz
2020-04-25 19:01 ` Brian L. Stuart
2020-04-25 20:07 ` Michael Kjörling
2020-04-25 21:34 ` Brian L. Stuart
2020-04-26 6:40 ` arnold
2020-04-25 19:41 Noel Chiappa
2020-04-25 20:27 ` Steffen Nurpmeso
2020-04-27 17:45 Noel Chiappa
2020-04-27 17:56 ` Richard Salz
2020-04-27 18:02 ` Brantley Coile
2020-04-27 18:47 ` Derek Fawcus
[not found] <mailman.1.1589421601.13778.tuhs@minnie.tuhs.org>
2020-05-14 3:02 ` Paul McJones
2020-05-14 17:08 ` Paul Winalski
2020-05-14 17:58 ` Clem Cole
2020-05-14 18:41 Doug McIlroy
2020-05-14 18:45 ` Richard Salz
2020-05-14 20:54 ` Clem Cole
2020-05-15 2:44 ` Rob Pike
2020-05-15 3:57 ` Rich Morin
2020-05-15 7:55 ` Dr Iain Maoileoin
2020-05-15 15:01 ` Larry McVoy
2020-05-15 15:36 ` John P. Linderman
2020-05-15 20:01 ` ron
2020-05-15 20:03 ` Larry McVoy
2020-05-15 20:05 ` Clem Cole
2020-05-15 20:18 ` ron
2020-05-15 20:24 ` Clem Cole
2020-05-16 0:57 ` Brantley Coile
2020-05-16 16:14 ` Dan Cross
2020-05-15 20:56 ` Steve Nickolas
2020-05-16 0:31 ` Peter Jeremy
2020-05-16 8:30 ` Steve Nickolas
2020-05-16 0:43 ` John P. Linderman
2020-05-16 16:28 ` Paul Winalski
2020-05-16 17:39 ` Warner Losh
2020-05-19 19:45 ` Peter Pentchev
2020-05-20 3:52 ` Rich Morin
2020-05-21 15:06 ` Dave Horsfall
2020-05-15 20:34 Doug McIlroy
2020-05-15 20:40 ` Warner Losh
2020-05-15 21:31 Richard Tobin
2020-05-15 21:53 ` Steve Nickolas
2020-05-15 22:33 ` ron
2020-05-15 23:34 ` Steffen Nurpmeso
2020-05-16 1:26 ` Larry McVoy
2020-05-16 21:59 ` Ronald Natalie
2020-05-16 23:26 ` Steffen Nurpmeso
2020-05-17 16:24 ` Paul Winalski
2020-05-17 16:29 ` ron
2020-05-17 16:38 ` Paul Winalski
2020-05-17 20:08 ` Clem Cole
2020-05-18 8:46 ` Peter Jeremy
2020-05-19 7:41 ` Dave Horsfall
2020-05-18 12:04 ` Tony Finch
2020-05-18 13:10 ` Clem Cole
2020-05-18 15:13 ` Rich Morin
2020-05-18 15:51 ` Brantley Coile
2020-05-18 16:11 ` Dan Cross
2020-05-18 21:18 ` ron
2020-05-17 16:10 ` Derek Fawcus
2020-05-17 16:14 ` ron
2020-05-16 0:15 Nelson H. F. Beebe
2020-05-16 0:28 ` Steffen Nurpmeso
2020-05-16 1:52 ` Warner Losh
2020-05-16 16:31 ` Paul Winalski
2020-05-16 20:35 ` Brad Spencer
2020-05-16 20:37 ` Warner Losh
2020-05-18 12:25 ` Tony Finch
2020-05-16 18:45 Richard Tobin
2020-05-16 21:55 ` Ronald Natalie
2020-05-18 13:58 Doug McIlroy
2020-05-18 14:33 Doug McIlroy
2020-05-19 2:29 Doug McIlroy
2020-05-19 3:20 ` Steve Nickolas
2020-05-19 12:29 Noel Chiappa
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