Add pnut-awk #228
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Add pnut-awk #228
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2 issues:
- Some local variables in pnut-exe were called
`next`, which is a reserved word in AWK.
- The `_write` runtime function was implemented
in a way that prevented null bytes from being
written correctly.
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Context
Why stop at POSIX shell?
This PR adds a new pnut variant: pnut-awk. AWK is a much better compilation target (local variables, built-in arrays) than the shell, making the
pnut-awk.awkseed script smaller thanpnut-sh.sh(4225 vs 6131 lines of code) and much faster to bootstrap (less than 5 seconds on the awk implementations I tested (gawk, nawk, mawk). AWK has similar characteristics (multiple implementation, stable, defined by a standard) as POSIX shell that makes them good starting points for reproducible builds.I haven't played too much with it, I'm sure the current implementation uses extended AWK features. Some AWK implementations need to be invoked with
--posixto make them conform to POSIX AWK.Inspired by @cosinusoidally's cjsawk presentation :)