Duration.__eq__: only quarterLength matters when expression is inferred#1976
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Fixes #1970 When both Durations have expressionIsInferred=True, their type, dots, tuplets, and components can be freely re-expressed according to context, so only quarterLength needs to match for equality. Also corrects the expressionIsInferred docstring ("according to complex" -> "context"). AI-assisted (Claude)
Use a more standard case (a plain eighth vs a dotted eighth under a 3:2 triplet, both 0.5 QL) and note that inferred expressions arise e.g. when parsing from MIDI. AI-assisted (Claude)
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Fixes #1970
When both Durations have expressionIsInferred=True, their type, dots, tuplets, and components can be freely re-expressed according to context, so only quarterLength needs to match for equality. Also corrects the expressionIsInferred docstring ("according to complex" -> "context").
AI-assisted (Claude)