From: Jambunathan K <kjambunathan@gmail.com>
To: Vr Rm <vrrm00@gmail.com>
Cc: Help GNU Emacs <help-gnu-emacs@gnu.org>
Subject: [OT] Re: Raw strings (experimental patches inside)
Date: Fri, 10 Aug 2012 11:37:47 +0530 [thread overview]
Message-ID: <87txwb5lfw.fsf_-_@gmail.com> (raw)
In-Reply-To: <87wr1749m0.fsf@uwakimon.sk.tsukuba.ac.jp> (Stephen J. Turnbull's message of "Fri, 10 Aug 2012 14:08:39 +0900")
Thought I would post this to help-gnu-emacs.
> It's hard to see how they can be simplified -- as used in all
> languages I know, regexps are extremely compact notation.
If someone is comfortable with lisp-sytax, one can use `rx' and
`rx-to-string' etc to create intuitive and human-readable regexps.
In re-builder, with `reb-re-syntax' set to `re', an expression like this
'(one-or-more ?\n)
with a `reb-re-copy' leads to a fairly difficult to decode regex like
this:
"\\(?:
+\\)"
It is easy to guess what the first one does. Not so easy, with the
second one.
This together with some rote-learning like - if there are
two-backslashes replace them with a single-backslash or vice-versa -
will get one reasonably very far.
--
next prev parent reply other threads:[~2012-08-10 6:07 UTC|newest]
Thread overview: 29+ 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 ` Jambunathan K [this message]
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
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
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