1 files changed, 50 insertions, 1 deletions
diff --git a/cppawk-cons.1 b/cppawk-cons.1
index fa286b9..6d701f6 100644
--- a/cppawk-cons.1
+++ b/cppawk-cons.1
@@ -92,7 +92,8 @@ cons \- Lisp-like data representation and control flow macros
 
   iota(\fIx\fP, \fIy\fP[, \fId\fP])   \fI// numbers from x to y, incrementing by\fP
 
-  uniq(\fIx\fP)           \fI// list x deduplicated\fP
+  uniq(\fIx\fP)           \fI// deduplicate x\fP
+  uniqual(\fIx\fP)        \fI// deduplicate x with equal equality\fP
 
   mapcar(\fIf\fP, \fIx\fP)      \fI// map list through function f\fP
 
@@ -1766,6 +1767,54 @@ will be attained.
   iota(2.5, 2.5, -1) -> (2.5)
 .ft R
 
+.SS Functions \fIuniq\fP and \fIuniqual\fP
+.bk
+Syntax:
+
+.ft B
+  uniq(\fIx\fP)
+  uniqual(\fIx\fP)
+.ft R
+
+The
+.B uniq
+and
+.B uniqual
+functions return a list formed by removing the duplicates from list
+.IR x .
+
+Whenever any item appears in
+.I x
+more than once, the resulting list will have only the first occurrence of
+that item; the subsequent occurrences do not appear in the returned list.
+
+The
+.B uniq
+function identifies duplicates using native Awk equality,
+using the raw representation of the objects as keys into an
+associative array.
+
+The
+.B uniqual
+function uses the
+.B equal
+function's notion of equality.
+
+.B Examples:
+
+.ft B
+  uniq(nil) -> nil
+  uniq(list(1, 2, 1, 3, 2, 4, 2, 1, 5, 6, 5)) -> (1 2 3 4 5 6)
+  uniqual(nil) -> nil
+  uniqual(list(1, 2, 1, 3, 2, 4, 2, 1, 5, 6, 5)) -> (1 2 3 4 5 6):
+  uniq(list(1, 1.0)) -> (1)
+  uniq(list(1, "1.0")) -> (1 1.0)
+  uniqual(list(1, 1.0)) -> (1)
+  uniqual(list(1, "1.0")) -> (1)
+  uniq(list(box_str("abc"), "abc")) -> ("abc" "abc")
+  uniqual(list(box_str("abc"), "abc")) -> ("abc")
+.ft R
+
 .SH "SEE ALSO"
 
 cppawk(1)