doc edit about top-level rule

pull/14/head
Matthew Butterick 6 years ago
parent bfacb563df
commit 8fd0aa4092

@ -858,6 +858,8 @@ This time, all the appearances of @racket[term] nodes in the parse tree will hav
As a convenience, when a grammar element is spliced, or a rule name is cut, @racket[brag] preserves the rule name by adding it as a syntax property to the residual elements, using the rule name as a key, and the original syntax object representing the rule name as the value. As a convenience, when a grammar element is spliced, or a rule name is cut, @racket[brag] preserves the rule name by adding it as a syntax property to the residual elements, using the rule name as a key, and the original syntax object representing the rule name as the value.
Caveat for the top-level rule: though the rule name can have a cut, it cannot have a splice — once you're at the top level, there's nothing above to splice into.
@subsection{Syntax errors} @subsection{Syntax errors}

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