XWiki use utf8_bin for subwikis (and recommend it for main wiki in the
documentation) right now.
Since we use than in the hope it support everything you should
definitely open a jira issue.
On Thu, Apr 7, 2016 at 2:17 AM, Debajit Adhikary <debajit.work(a)gmail.com> wrote:
  I have an XWiki installation, and I noticed that
emoji's were not getting
 saved correctly and were rendering as question marks in XWiki. This is
 caused by MySQL's default encoding which is "utf8" and not
"utf8mb4"
 (4-byte UTF to store the full unicode character set)
 To fix this, I am in the process of converting all my MySQL database tables
 into utf8mb4 encoding, which is turning out to be quite a lot of manual
 work.
 When XWiki creates the database tables for MySQL, can it use utf8mb4
 encoding by default? Is this something I could open a bug request for?
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Thomas Mortagne