I would like to have a discussion regarding making certain options the default for new installations of Koha 3.14 and deprecating other options.  Here's the list of proposals:

Enable DOM mode by default for both bibs and authorities

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Now that MARC21, NORMARC, and UNIMARC have DOM indexing configurations available, this is now possible.

Deprecating the GRS-1 filter

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Giving that DOM has significant advantages of GRS-1 in its flexibility, and as the DOM filter would be required for non-MARC metadata support by Zebra, I propose that we announce a deprecation of the GRS-1 configuration with it to be removed by 3.16.  I foresee several features coming down the pike for 3.16 that would require a reindexing during upgrade anyway, so switching to DOM for 3.16 would not impose a burden that wouldn't be present anyway.

Enable QueryParser by default

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Bug 10542 might be a blocker for this, and doing something about bug 10831 would be nice in order to do this.

Deprecating non-QueryParser mode

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Removing the non-QueryParser code would go a long way towards easing the rewrite of C4::Search.

Enable ICU by default

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