8.12
7.13.9 Syntax Pattern Clause Macros
space |
The space for bindings of identifiers that implement
pattern_body clauses.
definition |
Similar to defn.macro, but defines a name in the
pattern_clause space as a clause form
for use within a pattern_body.
The compile-time body block returns the expansion result. The result must be a sequence of groups to be spliced in place of the macro use within a pattern_body.