Sum with Junctions #2632

Author: JJ

doc/Type/List.pod6

@@ -1289,7 +1289,13 @@ Throws an exception if an element can not be coerced into Numeric.
     say (1, "0xff").sum;      # OUTPUT: «256␤»
     say sum(0b1111, 5);       # OUTPUT: «20␤»
 
-When being called on native integer arrays, it is also possible to specify
+If the list includes a C<Junction>, the result will accordingly be a
+C<Junction>:
+
+=for code
+say ( 1|2, 3).sum;            # OUTPUT: «any(4, 5)␤»
+
+When called on native integer arrays, it is also possible to specify
 a C<:wrap> named parameter.  This will add the values as native integers,
 wrapping around if they exceed the size of a native integer.  If you are
 sure you will not exceed that value, or if you don't mind, using C<:wrap>