Re: Mark alignment?

[Mats Bengtsson]

> address@hidden writes:
> > It seems that rehearsal marks are left aligned by default.
> > I tried to get centered alignment by setting 
> > RehearsalMark \override #'self-alignment-X = #0
> > but it doesn't make any change. Is there some other
> > solution?
> 
> that only works if Side_position::aligned_on_self (or some other
> function calling it) is in the X-offset callbacks

OK, it works if I add a line in grob-description.scm, but how
do I set X-offset-callbacks in the paper section? 
I tried lots of variants of 

RehearsalMark \override #'X-offset-callbacks = 
#(,Side_position::aligned_on_self)

but they all failed. 
Is there any harm to add this by default? In my opinion, rehearsal
marks should be centered over the bar lines by default.

  /Mats