From: Dmitri Paduchikh <dpaduchikh@gmail.com>
To: Stefan Monnier <monnier@IRO.UMontreal.CA>
Cc: "Stephen J. Turnbull" <stephen@xemacs.org>,
Vr Rm <vrrm00@gmail.com>,
Emacs development discussions <emacs-devel@gnu.org>
Subject: Re: Raw strings (experimental patches inside)
Date: Sat, 11 Aug 2012 17:05:53 +0600 [thread overview]
Message-ID: <87r4rd7koe.fsf@paduch.telenet.ru> (raw)
In-Reply-To: <jwvzk62d1qj.fsf-monnier+emacs@gnu.org> (Stefan Monnier's message of "Fri, 10 Aug 2012 14:50:20 -0400")
Stefan Monnier:
>>> And here we're back at regexps. I already agreed that they're
>>> convenient for regexps, but pointed out that a better solution would be
>>> to fix the regexp syntax so it doesn't backslash-escape every
>>> special character.
>> Yeah, I know -- I pointed that out too. That's still not a substitute
>> for raw strings in code.
SM> Why not?
>> You still need to *double*-backslash-escape, backslash-escaping is
>> insufficient.
SM> If the special chars don't need to be backslash escaped, then you don't
SM> need to double escape either, obviously.
I like the Lua way of solving this problem. They use different
characters for string and regexp escaping (\ and % correspondingly).
Choosing the same character for both purposes really creates a huge
opportunity for confusion, IMO.
$ lua
Lua 5.2.1 Copyright (C) 1994-2012 Lua.org, PUC-Rio
> =string.find('-xyz-', '(%w+)')
2 4 xyz
>
But they also do not escape parentheses and have raw strings in the form
of `[[...]]`.
--
With best regards,
Dmitri Paduchikh
next prev parent reply other threads:[~2012-08-11 11:05 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-03 2:02 Raw strings (experimental patches inside) Aurélien Aptel
2012-08-03 9:45 ` Pascal J. Bourguignon
2012-08-03 17:45 ` Aurélien Aptel
2012-08-04 19:41 ` Pascal J. Bourguignon
2012-08-05 0:16 ` Aurélien Aptel
2012-08-05 11:36 ` Pascal J. Bourguignon
2012-08-05 7:13 ` Lars Brinkhoff
2012-08-06 1:55 ` Stefan Monnier
2012-08-06 10:55 ` Pascal J. Bourguignon
2012-08-06 16:16 ` Stefan Monnier
2012-08-06 16:40 ` Pascal J. Bourguignon
2012-08-03 22:43 ` Stefan Monnier
2012-08-04 14:38 ` Ivan Andrus
2012-08-04 23:47 ` Stefan Monnier
2012-08-05 0:13 ` Aurélien Aptel
2012-08-06 16:17 ` Stefan Monnier
2012-08-10 1:33 ` Vr Rm
2012-08-10 5:08 ` Stephen J. Turnbull
2012-08-10 6:07 ` [OT] " Jambunathan K
2012-08-10 15:13 ` Stefan Monnier
2012-08-10 17:28 ` Stephen J. Turnbull
2012-08-10 18:50 ` Stefan Monnier
2012-08-11 7:27 ` Stephen J. Turnbull
2012-08-11 11:05 ` Dmitri Paduchikh [this message]
2012-08-12 0:29 ` Stephen J. Turnbull
2012-08-10 21:11 ` Vr Rm
2012-08-10 23:03 ` Davis Herring
2012-08-10 23:24 ` Learning Emacs regexp (was: Re: Raw strings (experimental patches inside)) chad
2012-08-11 7:39 ` Raw strings (experimental patches inside) Stephen J. Turnbull
-- strict thread matches above, loose matches on Subject: below --
2012-08-10 22:33 Dmitry Gutov
2012-08-11 7:49 ` Stephen J. Turnbull
2012-08-11 17:05 ` Dmitry Gutov
2012-08-11 17:57 ` Andreas Schwab
2012-08-11 18:22 ` Dmitry Gutov
2012-08-12 0:23 ` Stephen J. Turnbull
2012-08-11 13:30 ` Stefan Monnier
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