From: Marco Maggesi <marco.maggesi@gmail.com>
To: help-gnu-emacs@gnu.org
Subject: Question on syntax-propertize-function
Date: Thu, 6 Jun 2013 12:26:28 -0700 (PDT) [thread overview]
Message-ID: <f09e652a-d60a-49ce-b982-b83e31d9e237@googlegroups.com> (raw)
Hi,
I'm trying to improve an old emacs major mode I wrote some years ago (http://web.math.unifi.it/users/maggesi/holl-mode-2006-10-24.tar.gz) for editing HOL Light proof scripts (HOL Light is a theorem prover http://www.cl.cam.ac.uk/~jrh13/hol-light/, its syntax is close to OCaml and SML but with lots of idiosyncrasies).
I have two problems:
1. Comments are delimited by (* and *). However, (*) should not open nor close a comment.
2. Anything enclosed in blackquotes `...` is a HOL term and follows a different syntax.
I suppose that this kind of issues are normally solved by setting text properties, but so far my attempts failed miserably. I left aside problem 2 for now because I'm undecided on what to do exactly (e.g., should I set the syntax-table property for the quoted text or should I use syntax-entry "$ "?).
Here is what I did for problem 1. I set a syntax table for holl mode which includes the following entries:
(modify-syntax-entry ?\( "()1" st)
(modify-syntax-entry ?\) ")(4" st)
(modify-syntax-entry ?\* ". 23n" st)
This works as expected in most cases, but (*) open and close comments.
Then I defined a "propertize" function:
(defun holl-syntax-propertize (start end)
(goto-char start)
(funcall
(syntax-propertize-rules
("\\((\\)\\(\\*\\)\\()\\)"
(1 "() ")
(2 ". ")
(3 ")( "))
)
start end))
and I set syntax-propertize-function in the initialization of the major mode:
(set (make-local-variable 'syntax-propertize-function)
#'holl-syntax-propertize)
However, this doesn't seems to have any effect. I also played with syntax-propertize-extend-region-functions but with no success.
Can you see what's wrong with this approach? Or can you suggest a debugging technique? E.g., how can I run interactively syntax-property-rules? I defined an interactive function
(defun holl-propertize (start end)
(interactive "r")
(funcall
(syntax-propertize-rules
("\\((\\)\\(\\*\\)\\()\\)"
(1 "() ")
(2 ". ")
(3 ")( "))
)
start end))
and if I run it on a region containing (*) I get no effect.
Thanks,
Marco
next reply other threads:[~2013-06-06 19:26 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-06 19:26 Marco Maggesi [this message]
2013-06-06 21:23 ` Question on syntax-propertize-function Stefan Monnier
[not found] ` <mailman.1117.1370553840.22516.help-gnu-emacs@gnu.org>
2013-06-07 9:13 ` Marco Maggesi
2013-06-08 0:46 ` Stefan Monnier
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=f09e652a-d60a-49ce-b982-b83e31d9e237@googlegroups.com \
--to=marco.maggesi@gmail.com \
--cc=help-gnu-emacs@gnu.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
Code repositories for project(s) associated with this external index
https://git.savannah.gnu.org/cgit/emacs.git
https://git.savannah.gnu.org/cgit/emacs/org-mode.git
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.