2014-03-20 18:15:38 -07:00
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recovers from errors at the top level
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x * * y
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---
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(ERROR)
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recovers from errors inside parenthesized expressions
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x + (y * + z) * 5
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---
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(expression
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2014-03-26 00:10:59 -07:00
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(variable)
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2014-03-20 18:15:38 -07:00
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(plus)
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2014-03-26 00:10:59 -07:00
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(term (factor (ERROR)) (times) (number)))
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