Today's commits should fix Debian #518359 (not tried yet, as looking at a 14" Belinea 10 40 40 CRT makes my eyes and head hurt), as well as improve a lot of more things.
The mksh(1) echo builtin now behaves more POSIXly in "set -o posix" mode (or when called as "sh", if that feature was set at compile time). The exact feature set is negotiable, if certain parties, say pkgsrc®, are interested.
Thanks to the OpenBSD developers for improving their ksh as well.
The ;& and ;;& features are delayed for now though, sorry.
We're in a feature freeze; people please test mksh-current on your system to make R37 rock!