Re: [Dev-luatex] generalized hyphenation

Taco Hoekwater writes:

David Kastrup wrote:

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Taco Hoekwater writes:

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Vladimir Volovich wrote:

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some languages need a lot of discretionaries for proper hyphenation, and allowing to specify whole-word exceptions with arbitary discretionaries is already a good step forward, but i wonder if you plan to extend the \patterns mechanism to support arbitrary discretionaries too? For sure. Feel free to propose a syntax ;-)

Of course, while we are at it, we want \patterns{a23b} to have the normal meaning of "2", but delivering a penalty corresponding to 70 when we have specified \hyphenpenalties 5 10 30 40 70 20 (similar to the widowpenalties multiplicity). That allows specifying breakpoints with various priorities (good and bad ones).

I am having a hard time parsing this. How does the "3" relate to the value "70"? Also, how do you propose to create such pattern files?

70 is the fourth value (index 3) in the list of 5 penalty values. As to generating the pattern files: this depends on a hyphenation list with prioritized breakpoints (the printed Duden lexicon shows such breakpoints, good and emergency ones, so I presume that there might be some database somewhere). I don't know any money or urgency sitting around for a feature like that, though. -- David Kastrup, Kriemhildstr. 15, 44793 Bochum