Re: Hairpin to the last bar line

[Karol Majewski]

Well, as I said, it's not clear on which beat you have to put \! here to get 
the proper length of hairpin.

You could do:

{
  c'1~ \<
  << c'1 { s4*3 s4 \! } >> \bar "|."
}

or

{
  c'1~ \<
  << c'1 { s4*3 s8 s8 \! } >> \bar "|."
}

or

{
  c'1~ \<
  << c'1 { s4*3 s16*3 s16 \! } >> \bar "|."
}

etc... but none of them produces perfect output.

Inserting null event like <> or s1*0 produces the proper lengh of hairpin, but 
gives those nasty errors...