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-rw-r--r--txr.13
1 files changed, 3 insertions, 0 deletions
diff --git a/txr.1 b/txr.1
index aafa1411..d430ef3a 100644
--- a/txr.1
+++ b/txr.1
@@ -9876,6 +9876,9 @@ argument specifies whether it shall have weak values, and
all three of these properties to false, and allows them to be overridden to
true by the presence of keyword arguments.
+It is an error to attmpt to construct an equal-based hash table which
+has weak keys.
+
The hash function provides an alternative interface. It accepts optional
arguments which are keyword symbols. Any combination of the three symbols
:weak-keys, :weak-vals and :equal-based can be specified in any order