From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Andreas =?UTF-8?Q?R=C3=B6hler?= Newsgroups: gmane.emacs.bugs Subject: bug#23443: 25.0.93; Temporary change to syntax-table is in effect during syntax-propertize Date: Fri, 13 May 2016 07:49:16 +0200 Message-ID: <57356ADC.1060007@easy-emacs.de> References: <1c56743e-4817-8373-fba9-3a3e21e37af7@yandex.ru> <318abec3-4ff6-f647-5754-dc061be63eaf@yandex.ru> <11eafc4f-9d1b-7941-cb3d-c5dfcd8532f1@yandex.ru> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: multipart/alternative; boundary="------------080903040103020209030505" X-Trace: ger.gmane.org 1463420193 20985 80.91.229.3 (16 May 2016 17:36:33 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Mon, 16 May 2016 17:36:33 +0000 (UTC) To: 23443@debbugs.gnu.org Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Mon May 16 19:36:22 2016 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1b2MRB-0002x5-0V for geb-bug-gnu-emacs@m.gmane.org; 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charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit |reopen| bugnumber The proposed solution, which has to bind syntax-propertize-function to nil before calling scan-sexp, reads like a work around. These things shouldn't be necessary. Assume a fix must affect usage of syntax-propertize-function and probably is not a trivial one. Its design seems worth further discussion. For example reading: "The specified function may call ‘syntax-ppss’ on any position before END, but it should not call ‘syntax-ppss-flush-cache’, which means that it should not call ‘syntax-ppss’ on some position and later modify the buffer on some earlier position." Emacs can do better. On 12.05.2016 12:05, Noam Postavsky wrote: > close 23443 > tags 23443 + notabug > quit > > On Sun, May 8, 2016 at 3:12 PM, Dmitry Gutov wrote: >> Here's a possible stopgap: >> >> - Narrow the buffer to the snippet (just to be safe). >> - Bind syntax-propertize-function to nil. >> - Call scan-sexps. >> - Call (syntax-ppss-flush-cache snippet-beginning-position). > Thanks, this seems to be working well (implemented in [1]). > > [1]: https://github.com/capitaomorte/yasnippet/pull/695 > > > --------------080903040103020209030505 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: 8bit reopen bugnumber

The proposed solution, which has to bind syntax-propertize-function to nil before calling scan-sexp, reads like a work around. These things shouldn't be necessary.
Assume a fix must affect usage of syntax-propertize-function and probably is not a trivial one.
Its design seems worth further discussion.

For example reading:

"The specified function may call ‘syntax-ppss’ on any position
before END, but it should not call ‘syntax-ppss-flush-cache’,
which means that it should not call ‘syntax-ppss’ on some
position and later modify the buffer on some earlier position."
Emacs can do better.

On 12.05.2016 12:05, Noam Postavsky wrote:
close 23443
tags 23443 + notabug
quit

On Sun, May 8, 2016 at 3:12 PM, Dmitry Gutov <dgutov@yandex.ru> wrote:

Here's a possible stopgap:

- Narrow the buffer to the snippet (just to be safe).
- Bind syntax-propertize-function to nil.
- Call scan-sexps.
- Call (syntax-ppss-flush-cache snippet-beginning-position).

Thanks, this seems to be working well (implemented in [1]).

[1]: https://github.com/capitaomorte/yasnippet/pull/695

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