From: Stefan Monnier <monnier@iro.umontreal.ca>
To: Dmitry Gutov <dgutov@yandex.ru>
Cc: 15594@debbugs.gnu.org
Subject: bug#15594: trunk r114639: * lisp/progmodes/ruby-mode.el (ruby-smie-grammar): Add rule for paren-free
Date: Mon, 21 Oct 2013 09:25:07 -0400 [thread overview]
Message-ID: <jwv61sq7o96.fsf-monnier+emacsbugs@gnu.org> (raw)
In-Reply-To: <5264C37E.6080300@yandex.ru> (Dmitry Gutov's message of "Mon, 21 Oct 2013 10:02:38 +0400")
>> Calling ruby-smie--forward-token is a bit dangerous since that function
>> might itself be called from ruby-smie--forward-token. It might work,
>> but you'll have to think hard about why an inf-loop is not possible.
> Hopefully because both `ruby-smie--forward-token' and
> ruby-smie--backward-token' would only call `ruby-smie--forward-token', and
> only when (> pos (point)), IOW there has to be some whitespace skipping done
> between the recursive calls.
Only recursing in one direction (only forward or only backward) is
a good way to guarantee progress, indeed. But currently
ruby-smie--implicit-semi-p calls ruby-smie--backward-token, so beware.
Stefan
next prev parent reply other threads:[~2013-10-21 13:25 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <E1VV5za-0006lz-QY@vcs.savannah.gnu.org>
2013-10-14 2:06 ` trunk r114639: * lisp/progmodes/ruby-mode.el (ruby-smie-grammar): Add rule for paren-free Dmitry Gutov
2013-10-14 13:44 ` bug#15594: " Stefan Monnier
2013-10-14 13:44 ` Stefan Monnier
2013-10-15 1:23 ` bug#15594: " Dmitry Gutov
2013-10-15 3:31 ` Stefan Monnier
2013-10-21 6:02 ` Dmitry Gutov
2013-10-21 13:25 ` Stefan Monnier [this message]
2013-10-26 1:19 ` Dmitry Gutov
2013-10-14 2:06 ` Dmitry Gutov
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