long text in "composer" / invisible TimeSignature

[Zbyněk Burget]

Hi,
I've two new problems.

1. How I can write long text to composer to header?
2. Why don't hide TimeSignature?

Zbynek



\version "2.12.2"

\header{
  composer = "Some long text. Long, long, long, long, long, long, long, 
long, long."
}

\score {
  \new Staff {
    \clef treble
    \key c \major
    \override Staff.TimeSignature #'break-visibility = #all-invisible
    \relative g'{ \cadenzaOn g4 g g g g g g g g g \bar "|." }
  }
}