awk: widen scope of redirection macros.

This change makes it possible to use the redirection macros
like -> and ->> everywhere in the awk macro, including the
init-forms of the :let clause.

* stdlib/awk.tl (sys:awk-mac-let-outer): New macro.
(sys:awk-mac-let): Move redirection macros into
awk-mac-let-outer.
(awk): Rearrange the order of wrapping. We split the
let so the awk-retval and aws-sym are bound outermost.
Then we have the outer macros that provide the
redirection operators. Then the application-defined
lets inside of that.

* txr.1: Documented wide scope of redirection macros.

0 files changed, 0 insertions, 0 deletions