Hi,
If something happens in the beginning of a bar, such as a clef change, a
\mark, or a time signature, then this is currently placed at time 0, which is
_after_ any grace notes. This results, as Julien pointed out, in problems in
cases such as this:
<<
\context Staff=A {r1 | \mark "X" c8}
\context Staff=B {r1 | \grace c8 c}
>>
In my opinion, what the user would expect, is that the mark should be placed
in the beginning of that bar. However, the mark is added _after_ the grace
note.
I have been thinking some more about it. I realised that intuitively, \mark
should be considered placed after the note preceding it, as opposed to before
the note following it. Which AFAICS would be equivalent to subtracting
infinity to the grace part of its time stamp, whenever there is no grace note
preceding the \mark in the current context.
This semantics would not destroy anything; you would still be able to add
marks etc. after grace notes by
<<
\context Staff=A {r1 | \grace s8 \mark "X" c8}
\context Staff=B {r1 | \grace c8 c}
>>
(which is actually a bit dirty, but would very rarely be needed)
Does this sound sensible to you developers? If it does I'll add it to the bug
cvs as a wish.
Erik
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