TrueType, as defined by Apple and Microsoft, provides the most powerful mechanism to hint a font. Yet, hardly any open source tool supports the creation of TrueType programs. Consequently, I have implemented my own tool.
The Humble Type Instruction Compiler translates humble type instructions into TrueType instructions, while taking care of cumbersome tasks like optimized stack pushes and index mapping.
Importantly, humble type instructions are not intended to form a new language, but rather provide a simplified arrangement of instruction names, flags, and arguments in a plain-text format.
The compiler is implemented in Python. Currently, it only supports the instruction of FontForge font objects, but it can be extended quite easily.
Further documentation is available in the doc directory.