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Re: Question on syntax-propertize-function
From: |
Stefan Monnier |
Subject: |
Re: Question on syntax-propertize-function |
Date: |
Thu, 06 Jun 2013 17:23:41 -0400 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/24.3.50 (gnu/linux) |
> (modify-syntax-entry ?\( "()1" st)
> (modify-syntax-entry ?\) ")(4" st)
> (modify-syntax-entry ?\* ". 23n" st)
Looks good.
> (defun holl-syntax-propertize (start end)
> (goto-char start)
> (funcall
> (syntax-propertize-rules
> ("\\((\\)\\(\\*\\)\\()\\)"
> (1 "() ")
> (2 ". ")
> (3 ")( "))
> )
> start end))
Looks OK (changing the syntax of the * in the middle should be
sufficient, but the extra entries shouldn't hurt).
> and I set syntax-propertize-function in the initialization of the major mode:
> (set (make-local-variable 'syntax-propertize-function)
> #'holl-syntax-propertize)
Looks good.
> 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?
Nope, it looks fine. Which version of Emacs are you using?
Is the mode using font-lock? Do you have font-lock-syntactic-keywords maybe?
> and if I run it on a region containing (*) I get no effect.
That might be due to the syntax-table property being immediately reset
by the code that auto-runs syntax-propertize-function or something along
these lines. Try it first in a fundamental-mode buffer.
Stefan