mruby

mruby is a lightweight implementation of Ruby that seems just perfect for this project. It's not quite ready for prime time, but it's simple enough that I can competently hack it.

I've contributed a couple of patches to it, and that's mainly to support nethack-i18n.

Using mruby will mainly be of benefit on Windows; you won't need RubyInstaller to run nethack-i18n anymore. You'll still need it to build, at least for the time being.

Update: I've tested on Linux, Windows and Mac, and released a source drop and binaries for Windows.