# [luatex] \hyphenpenalty not working

Hans Hagen pragma at wxs.nl
Tue Jul 9 20:18:13 CEST 2013

```On 7/9/2013 2:01 PM, Élie Roux wrote:
>> in the first pass there is no hyphenation at all, only the replace field
>> is consulted so there is no reason to take that penalty into account
>
> This makes sense! Though one can argue that an explicit \discretionary
> is not mandatorily an hyphen? The case of Gregorian scores is of course
> very specific, but it's part of the exceptions...
>
> In any case, such a difference with the TeX algorithm should be documented!

the first pass not being hyphenated has not to be documented as it's
standard tex behaviour (however, ignoring category 1-3 dics nodes in
pass one is, see a previous mail to you/taco, although that can become
optional)

concerning comparison with pdftex: as luatex separates the hyphenating,
ligaturing and kerning passes (and needs no reconstruction mechanisms
when unboxing and re-breaking is involved) there will always be some
incompatibilities, and these are mentioned in the manual

Hans

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