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Re: Declaring a local dynamic variable?


From: Joost Kremers
Subject: Re: Declaring a local dynamic variable?
Date: 23 Sep 2013 16:17:39 GMT
User-agent: slrn/pre1.0.0-18 (Linux)

Pascal J. Bourguignon wrote:
> Joost Kremers <address@hidden> writes:
>> If I purposefully use a local dynamic variable as in:
>
> CL has the (declare (special var…)) declaration for that.

Yeah, I was wondering if there was something similar for Elisp.

> To implement that in emacs lisp, you could define defun, let, let* and
> locally in a separate package, oops, no package in emacs.

Something that will hopefully be remedied one day. :-)

> To implement that in emacs lisp, you could define defun@, let@,
> let*@ and locally@ as macros that will check for the special
> declarations and define the variables as symbol-macrolets expanding to
> (symbol-value 'variable), and that save the old symbol-value and restore
> it.  Something like:

Erm, I believe you. :-) I'm afraid I don't have the time to go through
your code and grok it fully, but I'm duly impressed.



-- 
Joost Kremers                                   address@hidden
Selbst in die Unterwelt dringt durch Spalten Licht
EN:SiS(9)


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