I think that is thanks to the Knuth-Plass algorithm, with Knuth being the inventor of Tex, which powers Latex. The problem seems not trivial indeed. http://www

I think that is thanks to the Knuth-Plass algorithm, with Knuth being the inventor of Tex, which powers Latex. The problem seems not trivial indeed. http://www.eprg.org/G53DOC/pdfs/knuth-plass-breaking.pdf http://www.eprg.org/G53DOC/pdfs/knuth-plass-breaking.pdf https://tex.stackexchange.com/questions/230668/any-progress-on-knuth-plass-algorithm https://tex.stackexchange.com/questions/230668/any-progress-... http://litherum.blogspot.com/2015/07/knuth-plass-line-breaking-algorithm.html http://litherum.blogspot.com/2015/07/knuth-plass-line-breaki...