2nd alternative Volta bracket isn't printed after a line break

[Valentin Villenave]

Greetings,

I've been discussing with Michael Pozhidaev about the way volta
brackets are printed when a line break occurs in an "alternative"
situation.

In the following snippet, the 2nd bracket is not printed after the line break:

 \relative c'' {
   \time 2/4
   \repeat volta 2 { d4 d }
   \alternative {
     { e4 e f f }
     { g4 g \break f f }
   }
   e e
 }

% If you remove the \break, the bracket is printed over the two Fs.

My guess would be that unlike the first bracket an "alternative"
bracket doesn't have to "contain" notes, but only to show the
_beginning_ of the music that has to be played after the repeat, and
therefore will not be printed after a line break. Ralph, is that
right? I couldn't find it documented anywhere.

Cheers,
Valentin