From @purd|e@@ @end|ng |rom gm@||@com  Sat May 25 00:59:14 2019
From: @purd|e@@ @end|ng |rom gm@||@com (Abby Spurdle)
Date: Sat, 25 May 2019 10:59:14 +1200
Subject: [Rd] 
 Give update.formula() an option not to simplify or reorder the
 result -- request for comments
In-Reply-To: <56ee72cb833f01d6eb3925452925d54f7c2e03d7.camel@uow.edu.au>
References: <56ee72cb833f01d6eb3925452925d54f7c2e03d7.camel@uow.edu.au>
Message-ID: <CAB8pepy_OJyxZNJMm=_GXQrcpYT0dXz22QrCCU0tSo+GRVEL1A@mail.gmail.com>

> Martin Maechler has asked me to send this to R-devel for discussion
> after I submitted it as an enhancement request (
> https://bugs.r-project.org/bugzilla/show_bug.cgi?id=17563).

I think R needs to provide more support for CAS-style symbolic computation.
That is, support by either the R language itself or the standard packages,
or both.
(And certainly not by interfacing with another interpreted language).

Obviously, I don't speak for R Core.
However, this is how I would like to see R move in the future.
...improved symbolic and symbolic-numeric computation...

I think any changes to formula objects or their methods, should be
congruent with these symbolic improvements.

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[Rd] Give update.formula() an option not to simplify or reorder the result -- request for comments
Abby Spurdle