let RhythmicStaff use default barline extent

There is no reason to make barlines in RhythmicStaff special.
The purpose of the deleted code was probably to ensure that
the barlines were visible at all (despite the fact that there
is just one staffline in a RhythmicStaff).  However, currently
barline code takes care of this by default.

This makes barlines in DrumStaff and RhythmicStaff similar.

A comment by Keith:
The book by Kurt Stone happens to have some bar-lines in single-line percussion
staves that are as tall as a 4/4 time-signature.  Other examples in the same
book have short bar-lines like these here, and looking at some scores the short
bar-lines are more common.

diff --git a/ly/engraver-init.ly b/ly/engraver-init.ly
index 9ff53bed6c80b93734dabfb0c7cee0278b74cd43..ff777875c646962d020341d35778db291dda23e1 100644 (file)
--- a/ly/engraver-init.ly
+++ b/ly/engraver-init.ly
@@ -169,7 +169,6 @@ contained staves are not connected vertically."
   \name RhythmicStaff
   \alias "Staff"
 
-  \override BarLine.bar-extent = #'(-2 . 2)
   \override VoltaBracket.staff-padding = #3
   \override StaffSymbol.line-count = #1