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| -rw-r--r-- | txr.1 | 18 |
1 files changed, 18 insertions, 0 deletions
@@ -30417,6 +30417,24 @@ then forms beginning with are not syntactic places. (The situation of a clobber accessor or delete accessor being defined without an update expander is improper). +.coNP Special variable @ *place-macro* +.desc +The +.code *place-macro* +special variable holds the hash table of associations between +symbols and place macro expanders. + +If the expression +.code "[*place-macro* 'sym]" +yields a function, then symbol +.code sym +has a binding as a place macro. If that +expression yields +.codn nil , +then there is no such binding: compound forms beginning with +.code sym +do not undergo place macro expansion. + .SS* Quasiquote Operator Syntax .coNP Macro @ qquote .synb |