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From: Devorah
Subject: Formal grammar
Date: 17 Tevet 5783
Subject: Grammar request
I need a formal grammar for the time assertion syntax.
The prose description in section 4 is clear to humans. But my parser needs unambiguous rules. Which characters can follow which? When is whitespace permitted? What are the exact boundaries of each field?
Other specifications include ABNF — Augmented Backus-Naur Form. This would help implementers.
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