Re: Feature request: break-align-symbols property for MetronomeMark

[Kieren MacMillan]

Hi Neil,

> The alignment's good when there's a time signature present, but the
> stumbling block is how to align to note columns; I can't work out how
> the metronome marks get attached to a paper column when there's no
> breakable object nearby. :(

For the record, this is also a problem with RehearsalMark:

%%%%%%%%%%%%%%%%%%%%%%
\version "2.11.57"

\layout
{
        \context
        {
                \Score
                \override RehearsalMark #'break-align-symbols = 
#'(time-signature)
                \override RehearsalMark #'self-alignment-X = #left
        }
}

twoMarks = \relative
{
	\time 4/4 \mark "This mark is aligned (correctly) to the time  
signature." c'2 c4 c \break
	\mark "This one is aligned (undesirably) to the left of the system."  
c2 c4 c
}

\score
{
        \twoMarks
}
%%%%%%%%%%%%%%%%%%%%%%

It would be nice if the second-system RehearsalMark aligned with the  
first note of the measure, as per Read's description.

Can you calculate the appropriate value(s) from the BarLine #'space- 
alist, then attach the Metronome/Rehearsal Mark to the bar line  
(invisible or not), and pad it from there? I mean, clearly Lilypond  
knows where to put the first note of the measure, so it should be  
determinable from the values of the #'space-alist, no?

Cheers,
Kieren.