kennethreitz 42ac7292cb Guitar-aware LilyPond export (ChordNames/FretBoards/TabStaff) ...

Score.to_lilypond() gains chord_names/fretboards/tab flags (plus
chord_part and fretboard) that render a chord part as a lead sheet from a
single \chordmode block. Fret diagrams use PyTheory's own Fretboard
voicings via \storePredefinedDiagram, so they match what it would
actually play rather than LilyPond's computed defaults.

New helper _chord_to_chordmode(chord) derives the chordmode modifier from
Chord.quality (faithful even when the symbol re-spells, e.g. C6 -> Am7).
Default output is unchanged. Verified by compiling the output with
LilyPond 2.26 (lead sheet + a 17-quality battery, incl. m7+ and aug7).

Adds 7 tests (string assertions + a lilypond-compile test marked slow).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

2026-06-14 14:07:53 -04:00

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SKILL.md

Guitar-aware LilyPond export (ChordNames/FretBoards/TabStaff)

2026-06-14 14:07:53 -04:00