PR 2180: MDEV-28455 CREATE TEMPORARY TABLES privilege is insufficient for SHOW COLUMNS is done and approved and with this patch it is possible to show columns for current connection with CREATE TEMPORARY TABLE privilege.
However IS.COLUMNS will not be working. MDEV-12459 and related PR 2189 is done and will introduced in 10.12 visibility of temporary tables from IS.TABLES. Note that MDEV-12459 by design defined this changes, without IS.COLUMNS.
Do we want to port patch of PR 2189 for 10.3+ for IS.COLUMNS and apply PR 2180?
Or do we want to apply patch PR 2180 together with PR 2189 and apply this MDEV as new commit to PR 2189?
Or other options?