Repeat the previous measure, or more (indicated with the number above and more slashes). Couldn't find this feature in the tests. Think this is a nice feature to add. This is used a lot by drummers.


+1, this is also sometimes used in orchestra, e.g. for viola:

Here's a resource calling it (one-bar) repeat sign, examples further down:
https://dictionary.onmusic.org/terms/4804-repeat
This is done. I added a new GlyphNote class that lets you add arbitrary glyphs to the stave. There's a new subclass called RepeatNote specifically for repetition glyphs.

See tests in tests/glyphnote.js for usage examples.
See tests in
tests/glyphnote.jsfor usage examples.
tests/glyphnote_tests.js
Most helpful comment
This is done. I added a new
GlyphNoteclass that lets you add arbitrary glyphs to the stave. There's a new subclass calledRepeatNotespecifically for repetition glyphs.