Add support for 'nextfile'
benhoyt opened this issue · comments
https://www.gnu.org/software/gawk/manual/html_node/Nextfile-Statement.html
This is not in the current POSIX spec, but onetrueawk, Gawk, mawk, and busybox awk all support it (and apparently it was accepted into POSIX years ago, but the spec hasn't been updated yet).