Knuth and Plass line breaking algorithm

[Nicolas P. Rougier (inria)]

I'm reading the ongoing thread on variable pitch text filling and 
I did not see a mention to the Knuth and Plass line breaking 
algorithm (the one used in TeX). Maybe I missed it but I wanted to 
be sure it has been considered (I'm making a separate post to not 
break the vraible pitch thread). 

Original article:
http://www.eprg.org/G53DOC/pdfs/knuth-plass-breaking.pdf

Emacs implementation:
https://github.com/Fuco1/justify-kp (from 2014, I did not manage 
to run it)

Javascrip implementation:
https://github.com/bramstein/typeset


Nicolas