Thanks, Paul. I wrote to Ed Reingold a few days ago asking him about this
issue, but I haven't heard back from him.

A general question: do you have any sense for whether these sorts of
calculations could be handled by Emacs Lisp, or whether they require Common
Lisp?

I would be interested in coding this up from scratch in the event that the
Deshow/Reingold functions can't be incorporated directly, though given my
very rudimentary understanding of Lisp (both Emacs and Common), I imagine
this would take some time (#damnitjimimalinguistnotalispcoder).

cheers,
  --Ben

On 13 June 2011 11:53, Paul Eggert <eggert@cs.ucla.edu> wrote:

> On 06/13/11 09:40, Benjamin Slade wrote:
> > I found a very nice set of functions for doing so implemented in Common
> Lisp
> > in *Deshow, Nachum and Reingold, Edward M. 2008. _Calendrical
> Calculations_.
> > New York: Cambridge University Press, 3rd edn*. I was wondering if this
> > perhaps has already been implemented (given that Reingold developed the
> > original calendar calculations for Emacs).
>
> I expect the answer is that it hasn't been.  And we can't simply
> incorporate
> the copyrighted code from the book into Emacs without having copyright
> permission
> from the authors.  However, if you could code the ideas up from scratch,
> without
> copying the book's code, that would be a nice addition to Emacs.  Another
> possibility
> is that you could contact Ed Reingold and ask him whether he'd be willing
> to
> donate the code; perhaps if enough people ask, he'll change his mind.
>



-- 
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Benjamin Slade
Dept. of Linguistics
University of Illinois at Urbana-Champaign
[ http://www.jnanam.net/slade/ ]

Stæfcræft & Vyākaraṇa (lingblog) - http://staefcraeft.blogspot.com
The Babbage Files (techblog) - http://babbagefiles.blogspot.com

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  *प*रो ऽक्ष॑का*मा* हि *दे*वाः
    'The gods love the obscure.' (Śatapathabrāmaṇa 6.1.1.2)