[tex-hyphen] String preparation

[Arthur Reutenauer]

> Sure! I don't think these will be supported by polyglossia or babel
> natively, they'll certainly be used only by hand for
> "micro-hyphenation". I'll advertise that for Latin though, providing a
> snippet. (most people using liturgical Latin use LuaLaTeX because
> Gregorio is built on top of it)

  Whatever you do, it would be really great if you could document it.

	Best,

		Arthur