[m-dev.] for review: add code to read terms from strings

[Peter Schachte]

> Add code to parse terms from strings rather than from streams.

A little late for this comment, but anyway....

Wouldn't it be better to create a type class for input-stream-like-things,
make read et al. work for the type class, and make a string-stream instance
of this? 

Or is this another one of those "until we have a debugger we can't really
use type classes" deals?  If so, maybe it would be worth spending some time
to make type classes work under Prolog?


-Peter Schachte               | Politicians are the same all over. They
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