>>> import pymongo
>>> testdb = pymongo.MongoClient()['test']
>>> doc1 = {'_id':1, 'content':u'caf\xe9'}
>>> doc2 = {'_id':2, 'content':u'cafe\u0301'}
>>> testdb.foo.insert(doc1)
1
>>> testdb.foo.insert(doc2)
2

> db.foo.ensureIndex({content:"text"})
> db.foo.find()
{ "_id" : 1, "content" : "café" }
{ "_id" : 2, "content" : "café" }
> s = db.foo.findOne({_id:1}).content
café
> db.foo.runCommand("text",{search:s})
{
	"queryDebugString" : "café||||||",
	"language" : "english",
	"results" : [
		{
			"score" : 1.1,
			"obj" : {
				"_id" : 1,
				"content" : "café"
			}
		}
	],
	"stats" : {
		"nscanned" : 1,
		"nscannedObjects" : 0,
		"n" : 1,
		"nfound" : 1,
		"timeMicros" : 104
	},
	"ok" : 1
}
>