From: Stefan Monnier <monnier@iro.umontreal.ca>
To: Dmitry Gutov <dgutov@yandex.ru>
Cc: 15874@debbugs.gnu.org, Bozhidar Batsov <bozhidar@batsov.com>
Subject: bug#15874: 24.3.50; exit! not properly font-locked in ruby-mode
Date: Thu, 05 Dec 2013 23:57:49 -0500 [thread overview]
Message-ID: <jwvtxema8a2.fsf-monnier+emacsbugs@gnu.org> (raw)
In-Reply-To: <87a9ge7l5q.fsf@yandex.ru> (Dmitry Gutov's message of "Fri, 06 Dec 2013 04:44:49 +0200")
> Not mandatory, just good for performance, AFAICT. Instead of maching all
> identifiers that look like methods and then finding out that most of
> them don't end with ? or ! anyway, it would be faster to scan the buffer
> for ? or !, and then look a bit back and see if the text before such a
> character resembles a method name.
We can also do that, using a "[?!]" regexp and then do the "look a bit
back" in Elisp.
> That looks good, but, like you mentioned later, if we had a dedicated
> backslash-sequence, it could also transparently handle the EOB case.
> I guess, the question is, would it see much use.
But then it would be a lot more special cased.
> `regexp-opt' seems to be the primary use case to me.
I think the second arg to `regexp-opt' is a misfeature.
> irb(main):026:0> a = 5
> => 5
> irb(main):027:0> a?3:4
> SyntaxError: (irb):27: syntax error, unexpected ':', expecting $end
> a?3:4
> ^
> from /home/gutov/.rbenv/versions/1.9.3-p429/bin/irb:12:in `<main>'
Good.
Stefan
next prev parent reply other threads:[~2013-12-06 4:57 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-11-12 12:38 bug#15874: 24.3.50; exit! not properly font-locked in ruby-mode Bozhidar Batsov
2013-12-04 18:31 ` Dmitry Gutov
2013-12-04 19:20 ` Stefan Monnier
2013-12-04 22:33 ` Dmitry Gutov
2013-12-04 23:15 ` Dmitry Gutov
2013-12-05 2:50 ` Stefan Monnier
2013-12-05 3:42 ` Dmitry Gutov
2013-12-05 19:02 ` Stefan Monnier
2013-12-06 2:44 ` Dmitry Gutov
2013-12-06 4:57 ` Stefan Monnier [this message]
2013-12-06 4:23 ` Dmitry Gutov
2013-12-05 6:34 ` Kevin Rodgers
2013-12-05 10:58 ` Dmitry Gutov
2013-12-05 14:50 ` Kevin Rodgers
2013-12-05 17:25 ` Dmitry Gutov
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