Ke Li a77273fc01 Reject regex search if regex string is too long ()
* Reject regex search if regex string is too long ()

* Add docs

* Introduce index level setting `index.max_regex_length`
 to control the maximum length of the regular expression

Closes 
2018-02-23 10:41:24 -08:00
..
2017-03-30 22:26:10 -04:00
2018-02-15 15:31:00 +00:00