fakemongo/fongo — pull request #68 by liranms (2014-10-02 15:51:12+00:00)
Title: fixed bug that the $in operator did not compare regex, see example inside

for example: { "x" : "aaa" } did not match: find({"x" : {"$in" : [1234, /a+/, "nomatch"] })
the regex /a+/ should match "aaa" (the others, of course, do not match "aaa")