2.2.69 Keep_alive_together_engraver

This engraver collects all Hara_kiri_group_spanners that are created in contexts at or below its own. These spanners are then tied together so that one will be removed only if all are removed. For example, if a StaffGroup uses this engraver, then the staves in the group will all be visible as long as there is a note in at least one of them.

Keep_alive_together_engraver is part of the following context(s) in \layout: PianoStaff.

LilyPond Internals Reference v2.25.15 (development-branch).