Re: [NTG-context] underbraces get progressively more misaligned (w/ minimal example)

Once it in the luatex trunk, I will check it right away.

I just compiled and installed luatex 0.79.1 r5033, remade the formats, and the result passes my underbrace tests (the 30,000 iterations and the examples in my book mss). Thank you for the great debugging. -Sanjoy