After some trivial grammar fixes, we have these errors

[dabrahams]

/Users/dave/src/val/Tests/ParseGenTests/ParseGenTests.swift:94: error: -[ParseGenTests.ParseGenTests testBNFConversion] : failed - Unexpected error
/Users/dave/src/val/spec/spec.md:702.5-702.18: error: Symbol 'decl-attribute' is unreachable from start symbol 'source-file'
/Users/dave/src/val/spec/spec.md:705.5-705.18: error: Symbol 'attribute-name' is unreachable from start symbol 'source-file'
/Users/dave/src/val/spec/spec.md:706.11-706.14: error: undefined symbol 'name'
/Users/dave/src/val/spec/spec.md:708.4-708.27: error: Symbol 'attribute-parameter-list' is unreachable from start symbol 'source-file'
/Users/dave/src/val/spec/spec.md:711.4-711.22: error: Symbol 'attribute-parameter' is unreachable from start symbol 'source-file'
/Users/dave/src/val/spec/spec.md:1498.5-1498.24: error: Symbol 'subscript-identifier' is unreachable from start symbol 'source-file'
/Users/dave/src/val/spec/spec.md:1795.7-1795.14: error: undefined symbol 'dor-head'
/Users/dave/src/val/spec/spec.md:1797.5-1797.12: error: Symbol 'for-head' is unreachable from start symbol 'source-file'
/Users/dave/src/val/spec/spec.md:1887.30-1887.50: error: undefined symbol 'cond-binding-fallback'
/Users/dave/src/val/spec/spec.md:1889.5-1889.32: error: Symbol 'conditional-binding-fallback' is unreachable from start symbol 'source-file'
/Users/dave/src/val/spec/spec.md:2577.23-2577.40: error: undefined symbol 'type-argument-list'