[tex-hyphen] String preparation

Arthur Reutenauer arthur.reutenauer at normalesup.org
Thu May 26 22:05:37 CEST 2016

>> \savinghyphcodes
> Interesting, where is it documented?

  No idea, I think it comes from eTeX ultimately.  I never looked into
it myself, but it gets mentioned from time to time (most recently on
this list by Petr Sojka a few weeks ago).

> How do you foresee an implementation for this? This has to be in the
> engine right?

  I haven’t given the implementation serious thought, but it has to be
in the engine, yes.  As mentioned, we could have two additional
primitives \left and \rightgraphemehyphenmin, or (better in my opinion)
a primitive \usehyphenminsongraphemes (or whatever) that changes the
interpretation of \left and \righthyphenmin.  But this is such a
specialised use case that I don’t think it’s worth the bother.  The
differences are either minimal, or the languages for which they are
important use very simple hyphenation (this may change in the future, of



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