Comment #5 on issue 4040 by [email protected]: Dots ignoring shifted
ledger lines
https://code.google.com/p/lilypond/issues/detail?id=4040
Here are some more details. In lily/staff-symbol.cc, Staff_symbol::on_line
checks whether a note (or rest, I assume...) at a given staff position
falls on a line or not. This is used to determine whether to shift the
dots on dotted notes up to avoid collisions with staff and ledger lines
(among other things).
Previously Staff_symbol::on_line was not aware of custom ledger line
positions, and that was causing this issue (4040). This patch makes
Staff_symbol::on_line aware of custom ledger lines.
Standard staff and ledger lines are handled the same as before. For custom
staff and ledger lines the existing functions Staff_symbol::line_positions
and Staff_symbol::ledger_positions are used to get the lines for a given
staff position, and then iterate through them to determine whether notes at
that staff position fall on a line or not.
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