Re: RFC 226 (v2) Selective interpolation in single quotish context.

[Jarkko Hietaniemi]

Hang on...  \I \E amounts to the same number of characters as using
'. .'  (that is, terminating this q-string, concat the thing, start
a new q-string)  So for scalars, there would be no savings at all.
For arrays, yes, the proposed \I \E would still be useful.  Maybe the
\I should just scan for the following scalar/array var name and
automatically turn itself off again.

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