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2011-11-06 Kaz Kylheku <kaz@kylheku.com>
+ Task #11581 & bugfix.
+
+ * match.c (noval_s): New symbol variable.
+ (vars_to_bindings): Use a default value of noval_s to indicate a
+ required variable, rather than nil, which would not allow
+ an optional variable with a default value of nil.
+ (h_coll, v_collect): Check default value against noval_s, rather than nil.
+ (v_gather): Support :vars keyword.
+ (syms_init): Initialize new symbol variable.
+
+ * txr.1: Documented gather's :vars parameter.
+
+2011-11-06 Kaz Kylheku <kaz@kylheku.com>
+
Task #11581
* match.c (gather_s): New keyword variable.