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Document the addition of identifier macros

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Daphne Preston-Kendal 2021-12-30 11:18:39 +01:00
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doc/chibi.scrbl
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@ -261,6 +261,15 @@ introduction to syntactic-closures can be found at
\scheme{make-syntactic-closure} and \scheme{strip-syntactic-closures} are
also available.
Variable transformers and identifier macros are also supported: macros
created with \scheme{sc-macro-transformer} and \scheme{rsc-macro-transformer}
can match an identifier outside of operator position, and a special
\scheme{er-macro-transformer*} form is provided, otherwise identical
to the usual \scheme{er-macro-transformer}, which can do the same.
\scheme{make-variable-transformer} can be used to create transformer
procedures which expand an instance of \scheme{set!} with their syntax
keywords as their first argument.
\subsection{Types}
You can define new record types with