[m-rev.] Fix read_from_string problem in lex.m

[Fergus Henderson]

On 29-Oct-2002, Ralph Becket <rafe at cs.mu.OZ.AU> wrote:
> extras/lex/lex.m:
> 	Fixed a problem whereby it was not possible to use
> 	read_from_string as intended.

That one looks fine.

-- 
Fergus Henderson <fjh at cs.mu.oz.au>  |  "I have always known that the pursuit
The University of Melbourne         |  of excellence is a lethal habit"
WWW: <http://www.cs.mu.oz.au/~fjh>  |     -- the last words of T. S. Garp.
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