Lyrics: repeat hyphens at beginning of a new line

[Luca Rossetto Casel]

Hello,

   is there a way to place a hyphen before the syllable of a word when 
it's positioned into a new line?
In other words, when I have a word splitted between more than one line 
(or more than one page), I'd like to repeat the hyphen that follows the 
last syllable on the first line before the next one, at the beginning of 
the new line.

That would make possible recognizing in a clearer way the single words 
of complex lyrics - I'm working on the critical edition of an XVIII 
century opera, and the vocal texts are very extended. I also think that 
in a such way hyphenation would be cleaner, more accurate.

I can obtain it manually adding the hyphen before the syllable between 
quotes ( Li -- "-ly" -- pond ), but I'd like to implement this feature 
automatically, because I'm working of a very large number of very, very 
looong files! :-)

Thanks, thanks in advance... and, please, excuse me for my rusty English.

Luca
Italy