mksh R36b is out, grab it while it’s still hot ☺ There’s an impressive change list for a mere bug-fix version, and this is the first one where ahoka@ has contributed directly. Upgrade is recommended for all users. The new memory allocator has been backed out for stability.
MirOS-current has mksh R36b plus some changes from mksh-current, mostly renaming set -o utf8-hack to set -o utf8-mode denoting said technology is solid after ages of testing. MirOS-stable has R36b.