Most implementations of Clojure immutable maps and sets can return true when being compared against java.util.Map and java.util.Set instances (even mutable ones) if they currently have the same contents.
The proposed patch to enable this for int sets and int maps has a test case that demonstrates this is not true for the latest library code.
I would expect to get true for all of the .equals and = calls in the sample REPL session below.
`
user=> (def jset1 (java.util.HashSet. [1]))
'user/jset1
user=> (def intset1 (imap/int-set [1]))
'user/intset1
user=> (def cset1 #{1})
'user/cset1
user=> (.equals cset1 jset1)
true
user=> (= cset1 jset1)
true
user=> (.equals jset1 cset1)
true
user=> (= jset1 cset1)
true
user=> (.equals intset1 jset1)
false
user=> (= intset1 jset1)
false
user=> (.equals jset1 intset1)
true
user=> (= jset1 intset1)
false
`
