Dave Higgins noted that for notes outside of the staff, tremolo indications collided with ledger lines.
In reviewing Gould (p. 222), I found several defaults in LilyPond that go against Gould's recommendations. 1) The tremolo lines are too wide (they should be only as wide as a crotchet note head). 2) The tremolo lines are too thick (they should be thinner than beams, but in LilyPond they are the same thickness). 3) The tremolo lines collide with ledger lines (they should lie entirely within the staff). 4) For notes on a staff line, the tremolo line closest to the heads centered on a staff space. This is allowed in Gould, but not recommended. The recommendation is that single tremolo strokes should center on a staff line. The closest stroke and the single stroke are in the same position in LilyPond, so I think it is best to move them to a staff line. I have created changes to the semibreve single-note tremolo spacing code to fix all of these issues. I've attached pdf output from the current code as well as the improved code, along with my test file. Please review the changes and let me know if you think this is worth committing to LilyPond. Thanks, Carl
tremolo-test.pdf
Description: tremolo-test.pdf
tremolo-test.ly
Description: tremolo-test.ly
tremolo-test-improved.pdf
Description: tremolo-test-improved.pdf
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