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Re: Is there any elisp functions to tell whether the cursor is in a comm
From: |
Joe Bloggs |
Subject: |
Re: Is there any elisp functions to tell whether the cursor is in a comment block? |
Date: |
Mon, 14 Jul 2008 02:36:26 +0100 |
User-agent: |
Gnus/5.110006 (No Gnus v0.6) Emacs/21.4 (gnu/linux) |
bojohan+news@dd.chalmers.se (Johan Bockgård) writes:
> Joe Bloggs <who@cares.invalid> writes:
>
>> bojohan+news@dd.chalmers.se (Johan Bockgård) writes:
>>
>>> sunway <sunwayforever@gmail.com> writes:
>>>
>>>> for example, if the cursor is in a normal c code block, I want 'if '
>>>> to be expanded to 'if () {}', if it is in the comment block, I prefer
>>>> 'if ' not be expanded.
>>>
>>> ;; Non-nil when inside comment or string
>>> (nth 8 (syntax-ppss (point)))
>>>
>>> --
>>> Johan Bockgård
>>
>> I want to do that too, how do I do a conditional abbrev?
>> Currently I have:
>>
>> (define-abbrev c-mode-abbrev-table "for"
>> "" 'c-style-for-loop)
>> (define-abbrev c++-mode-abbrev-table "for"
>> "" 'c-style-for-loop)
>>
>> how would I make it only expand in uncommented code?
>
>
> ;; Emacs 22 has `looking-back' and `syntax-ppss'.
> ;; Emacs 23 has much more powerful abbrevs; we could simply use the
> ;; `:enable-function' property.
>
> (defmacro define-expander (name predicate expander)
> `(progn (put ',name 'no-self-insert t)
> (defun ,name ()
> (when (and ,predicate
> (re-search-backward "\\<\\w+\\=" nil t))
> (delete-region (match-beginning 0) (match-end 0))
> ,expander
> t))))
>
> (define-expander
> FOR-LOOP
> (not (nth 8 (parse-partial-sexp
> (save-excursion (beginning-of-defun) (point))
> (point))))
> (c-style-for-loop))
>
>
> (define-abbrev c-mode-abbrev-table "for" t 'FOR-LOOP)
>
>
> --
> Johan Bockgård
any possibilities with emacs 21?
- Is there any elisp functions to tell whether the cursor is in a comment block?, sunway, 2008/07/13
- Re: Is there any elisp functions to tell whether the cursor is in a comment block?, Johan Bockgård, 2008/07/13
- Re: Is there any elisp functions to tell whether the cursor is in a comment block?, sunway, 2008/07/13
- Re: Is there any elisp functions to tell whether the cursor is in a comment block?, Joe Bloggs, 2008/07/14
- Re: Is there any elisp functions to tell whether the cursor is in a comment block?, Lennart Borgman (gmail), 2008/07/14
- Message not available
- Re: Is there any elisp functions to tell whether the cursor is in a comment block?, Joe Bloggs, 2008/07/14
- Re: Is there any elisp functions to tell whether the cursor is in a comment block?, Lennart Borgman (gmail), 2008/07/14
- RE: Is there any elisp functions to tell whether the cursor is in a comment block?, Drew Adams, 2008/07/14
- Re: Is there any elisp functions to tell whether the cursor is in a comment block?, Lennart Borgman (gmail), 2008/07/14
- RE: Is there any elisp functions to tell whether the cursor is in a comment block?, Drew Adams, 2008/07/15
- Message not available
- Re: Is there any elisp functions to tell whether the cursor is in a comment block?, David Kastrup, 2008/07/15