Adding an extra staff at a line break
…When adding a new staff at a line break, some extra space is unfortunately added at the end of the line before the break (to fit in a key signature change, which …
…key f \major c1 c^"Unwanted extra space" \break << { c1 | c } \new Staff { \key f \major \once \… …Staff.TimeSignature c1 | c } >> c1 | c^"Fixed here" \break << { c1 | c } \new Staff { \once \set Staff.explicitKeySignatureVisibility = …