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2012-03-30 Kaz Kylheku <kaz@kylheku.com>
+ * match.c (h_var): Disallow the variable named by the symbol t
+ by throwing an exception. Allow nil, but wherever nil occurs,
+ do not produce a binding.
+
+ * txr.1: State the restrictions against using t in the section
+ on Variables and also describe the nil ignore feature.
+
+2012-03-30 Kaz Kylheku <kaz@kylheku.com>
+
* txr.1: Correction: backtracking does NOT take place into a block
which completed.