Re: adjusting first part of slur across system break

[Mats Bengtsson]

Trevor Daniels wrote:
>  \once\override Slur #'positions = #'( 4 . 0 )
>
> (Note that the slur positions are not continuously
> variable - changing them seems to cause discontinuous
> jumps in position sometimes.  I don't know why.)
Since LilyPond first prepares a list of possible slur shapes to consider 
and then chooses the "best" one. Changing the positions property may 
change which shape is considered the best, but the final choice will 
still be selected from the same list. This is also described in the 
documentation of the positions property in the Internal Reference (look 
at slur-interface).

   /Mats