MirBSD Korn Shell R30

MirBSD Korn Shell (mksh) is an actively developed successor of pdksh (the Public Domain Korn Shell), aimed at producing a shell good for interactive use, but with primary focus on scripting.
The project is intended to be portable to most *nix-like operating systems as long as theyre not too obscure. mksh incorporates improvements from OpenBSD and Debian, as well as bugfixes and enhancements developed for the MirOS and FreeWRT projects. The emacs command line editing mode is UTF-8 capable.
The shell supports large files, as well as all pdksh and some csh, AT&T ksh, and GNU bash features, is compatible with the Bourne shell (within limits, but you can turn off brace expansion), has no limit on array sizes, and incorporates some other useful builtins and features. While being already fast and small (without losing functionality), flags to make it even smaller can be given at compile time. An interactive shell reads "~/.mkshrc" on startup.
Enhancements:
- Packagers should read the information at http://www.mirbsd.org/mksh.htm#upgrade.
- mksh can now be built on more platforms, such as AIX, and with a lot of vendor compilers (Intel, Sun, IBM, Microsoft, Borland, Digital Mars, HP) in addition to gcc.
- Some constructs from GNU bash are supported.
- The code and build system got cleaned up, fixed, and improved further.
- Large file support on some OSes and POSIX compatibility got better.