Is there value and interest in an open-source version of the VTT compiler?
This would be a command-line compiler that could take a TTF with TSI* tables and compile it down to a hinted TTF (optionally stripping out the TSI* tables). Essentially, that's the same functionality that vttshell.exe provides in VTT 6.3 today.
It would include:
- The compiler that takes VTT's high-level language, VTTTalk, and produces highly optimized TT instructions (in source-code format).
- The assembler that takes TT instruction source and produces the byte code in in the font.
- The current Microsoft font program and pre-program that support the Res() instructions that adapt automatically to the rendering mode of the rasterizer.
I would guess that this could be useful for automating build processes or integrating into type design tools. This also dovetails with my suggestion after Robothon 2015 that VTTTalk could be adopted as the standard for storing hints in UFOs (with some enhancements to VTTTalk to eliminate glyph ID and point number dependencies).
But: does anyone out there want this? Would anyone actually make use of it?