[tex-hyphen] luatex and file names

[Hans Hagen]

On 8/9/2015 12:52 PM, Philip Taylor wrote:
>
>
> Hans Hagen wrote:
>
>>> - Is there any convention as how hyphenation files should be named?
>>>     Apparently most of them follow the pattern (load)hyph-LL (LL
>>>     = lang iso code) and (load)hyph-LL-SSSS (SSSS = script iso code),
>>>     but not all. (And of course, the encoding in the form .ec.)
>>
>> In most cases this is macro package dependent (as each can have their
>> own demands).
>
> I do not follow this, Hans :  if macro package X expects hyphenation
> files to be named hyph-LL-SSSS, and macro package Y expects them to be
> named hyph-SSSS-LL (for example), does this imply that a single
> hyphenation file must have two names if it is to be usable by both
> packages ?  To me, it would seem sensible for there to be a single
> convention by which hyphenation files are named, and for all packages to
> support that convention.

Many years ago when context started showing up in distributions, we 
remapped internally the context pattern file names to public ones, but 
then ran several times in situations where names/contents were changed 
without us knowing which then resulted in missing patterns. That was 
when I decided to repackage the patterns. (Similar things happened with 
fonts but that was more tricky to deal with).

At some point context made the move to utf 8 encoded patterns (because 
we could have multiple font encodings in  parallel which also means 
multiple instances of the same patterns need to be present). We had to 
create these pattern files ourselves out of the public ones.

Then came luatex and we went that route. And by now we organize pattern 
(files) differently, also because we add a bit more info. We have 
alternative hyphenators etc. (Some languages use word lists, we can have 
extended patterns, etc.)

So, the answer is, we ship different files and they are shipped with 
context. The overhead is minimal compared to the truckloads of type1 
font variants (encodings) that get distributed with e.g. texlive and it 
gives us a robust hyphenation support.

Hans

-----------------------------------------------------------------
                                           Hans Hagen | PRAGMA ADE
               Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
     tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com
                                              | www.pragma-pod.nl
-----------------------------------------------------------------