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From: jg@prg.ox.ac.uk (Jeremy Gibbons)
Newsgroups: comp.text.tex
Subject: TeX mathbins reversing arguments?
Message-ID: <JG.91Feb1152915@msc1.prg.ox.ac.uk>
Date: 1 Feb 91 15:29:15 GMT
Sender: news@prg.ox.ac.uk
Distribution: comp
Organization: Oxford University Computing Laboratory, UK
Lines: 11

Can anybody think of an obvious way of defining a TeX macro (a `binary'
thingy) \to such that $A \to B$ comes out as

   B <- A

(where A and B can be complicated expressions)? 

I'm prepared to write ${A} \to {B}$, or even ${A \to B}$, if it helps. I'd
like a way of doing it that doesn't requires me to write $\from A \to B$.

Jeremy