Re: Hairpin after-line-breaking -- how?

[Gilles THIBAULT]

> I want the hairpin to end on the first note of a new line.
> \relative g'{
>  \override Score.Hairpin #'after-line-breaking = ##t
>  g2\< a4 a4 | \break
>  b2.\! r4}
> But it doesn't work. What am I doing wrong?
If i have well understood, 'after-line-breaking is a callback function to 
allow user to tweak some parameters if a line break does occur, not to 
decide if you want or not to split a grob after a line break.
(see 
http://lilypond.org/doc/v2.12/Documentation/user/lilypond/Difficult-tweaks#Difficult-tweaks )
So the only (ugly) solution i know is :

%%%%%%%%%%%%
   \relative g'{
         g2\< a4 a4 | \break
         s16 b2.*11/12\! r4
         c1
   }
%%%%%%%%%%%%

but it is not very usefull in the "Real Life" because you generally don't 
know where a line break occurs.

Gilles