\once\property

[Han-Wen Nienhuys]

I've added support to CVS for doing

     \once \property

to set a property for a single timestep (and no longer).  An example
follows:

        \header {
            texidoc = "Once properties take effect during a single time step 
only."
        }

        \score {
              \notes \relative c' {
                  c4
                  \once \property Voice.Stem = #'()
                  c4
                  \once \property Voice.Stem \override #'thickness = #5.0
                  c4
                  c4
          }
        }


I would appreciate feedback on this change!

have fun.

-- 

Han-Wen Nienhuys   |   address@hidden   |   http://www.cs.uu.nl/~hanwen