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From: Vladislav Shpilevoy <v.shpilevoy@tarantool.org>
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Date: Sat, 26 Sep 2020 00:58:21 +0200
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Subject: Re: [Tarantool-patches] [PATCH 12/14] WIP: module api: expose
	box_key_def_merge()
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To: Alexander Turenko <alexander.turenko@tarantool.org>
Cc: tarantool-patches@dev.tarantool.org

Thanks for the patch!

Why would a module need that function? Its usage case is very
specific - merge primary and secondary parts to create a
unique key def for non-unique indexes. Is there a case outside
of the storage engines for that function?