> db.foo.save({path: 'a:b'})
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WriteResult({ "nInserted" : 1 })
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> db.foo.findOne()
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{ "_id" : ObjectId("58fedc47622e89329d123ee8"), "path" : "a:b" }
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> db.foo.save({path: 'a:b:c'})
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WriteResult({ "nInserted" : 1 })
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> db.foo.find({path: /a:[^:]+/})
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{ "_id" : ObjectId("58fedc47622e89329d123ee8"), "path" : "a:b" }
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{ "_id" : ObjectId("58fedc57622e89329d123ee9"), "path" : "a:b:c" }
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> db.foo.find({path: /a:[a-z]+/})
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{ "_id" : ObjectId("58fedc47622e89329d123ee8"), "path" : "a:b" }
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{ "_id" : ObjectId("58fedc57622e89329d123ee9"), "path" : "a:b:c" }
|