Reject regexp queries on the _index field. #46945
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jtibshirani
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We speculatively added support for `regexp` queries on the `_index` field in #34089 (this functionality was not actually requested by a user). Supporting regex logic adds complexity to the `_index` field for not much gain, so we would like to remove it. From an end-to-end test it turns out this functionality never even worked in the first place because of an error in how regex flags were interpreted! For this reason, we can remove support for `regexp` on `_index` without a deprecation period. Relates to #46640.
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We speculatively added support for
regexpqueries on the_indexfield in #34089 (this functionality was not actually requested by a user). Supporting regex logic adds complexity to the_indexfield for not much gain, so we would like to remove it.From an end-to-end test it turns out this functionality never even worked in the first place because of an error in how regex flags were interpreted! For this reason, we can remove support for
regexpon_indexwithout a deprecation period.Relates to #46640.