Github user benkeen commented on the pull request: https://github.com/apache/couchdb-fauxton/pull/362#issuecomment-103566176 - there should be a space after the "Mango Query" label and the "?" icon - the default mango query uses 2-spaces, but Ace's default behaviour is tabs (e.g. click ENTER - it'll automatically indent using a tab). Bit of an annoyance.
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