Re: Word hyphenation in LilyPond version 2.18.2.

[Werner LEMBERG]

> But I still think it should be possible to define some rules to apply
> as a second pass to lyrics that have been hyphenated by Frescobaldi,
> and I think this should be possible without false positives (although
> being strict on this may leave out a few border cases that are *not*
> hyphenated automatically.
> 
> 1) A leading vowel may be split from a syllable (trailing vowels are
> never hyphenated)
> 2) Diphtongs are note separated

This rule is problematic.

> 3) The remaining syllable must have at least two characters
> 4) One of the remaining characters must be a vowel
> 
> Examples (always: original -> default hyphenation -> [ additional
> hyphenation | comment ]):
> 
> oder -> oder -> o -- der
> hallo -> hal -- lo -> "lo" is not hyphenated because of rule 3
> lauwarm -> lau -- warm -> rule 2

counterexamples, mainly `Lehn- und Fremdwörter':

   Dialog -> Di-a-log
   Bibliothek -> Bi-bli-o-thek
   Geometrie -> Ge-o-me-trie

> ich -> ich -> rule 4
> ist -> ist -> rule 4
> Rebe -> Re -- be -> rule 3
> Adele (name) -> Ade -- le -> A -- de -- le -> "de" and "le" not split
> because of rule 3
> Esche -> Esche -> E -- sche -> not Esch -- e because of rule 1 (same
> with a -- de and not ad -- e)
> Reise -> Rei -- se -> "Rei" is not split because of rule 2
> 
> This all goes for German, in other languages it may not fully work.
> I know at least that in Italian and Latin there are combinations of
> two vowels and trailing vowels that may be hyphenated (music may set
> Ky -- ri -- e or e -- le -- i -- son (or e -- lei -- son)).
> 
> I'm not sure how to proceed, but I think that e.g. Frescobaldi could
> produce the hyphenation according to the dictionaries like it does
> already and then apply the additional rules to the results.  Should
> not be too hard to implement, at least if there are no complex
> issues with languages.  Probably the rules should be defined
> independently and according to the language they are used/applied or
> not.

Frescobaldi could maintain a set of prefixes (`geo-', `dia-', etc.)
that are known to contain a `separate vowel'.  Cf.

  
http://repo.or.cz/wortliste.git/blob/HEAD:/skripte/python/trennstellenkategorisierung/wortteile/praefixe


    Werner