msh

msh is a WIP shell with the goal of being portable to older operating systems, namely classic Windows and classic Mac OS. While the former already has a shell, the aim for both is to provide an emulation of bash* that's more sane to use in the modern day then whatever is built in.

It's written without the C standard library. Ports instead must implement src/system/system.h accordingly. It's also written in C89/C99 (mostly the former as it's needed for some compilers, but if C99 is supported by a platform's backend then it'll probably be used).

(*Not all of bash's feature set will be prioritized, particularly in regards to shell scripts or complex operators)