[m-dev.] for review: term_io quoting bug fix

[Thomas Charles CONWAY]

Fergus Henderson, you write:
> Tom, can you please review this one?
> 
> --------------------
> 
> Estimated hours taken: 0.5
> 
> Fix a bug reported by Tom Conway where term_io__write_term, io__write
> and io__write_binary were not properly quoting graphic tokens.
> 
> library/term_io.m:
> library/io.m:
> 	Change term_io__write_term and io__write to quote graphic
> 	tokens where necessary, so that the output will parse correctly
> 	when followed by ".\n".
> 
> tests/hard_coded/write.m:
> tests/hard_coded/write.exp:
> 	Add a new test to test the changes to io__write,
> 	and update the expected output for one of the existing tests.

This looks fine, thanks.

Thomas
-- 
Thomas Conway <conway at cs.mu.oz.au> )O+
To a killer whale, otters are like hairy popcorn -- Paul Dayton