[TYPO3-mvc] sys_category, MM_match_fields and extbase 6.2 LTS

[Torsten Schrade]

Hello list,

during the development of an extbase 6.1 extension that uses the core's 
categorization feature (sys_category) for several tables I stumbled 
over this issue:

http://forge.typo3.org/issues/39256 (has working patch: 
https://review.typo3.org/#/c/14469/)

Background: Currently, Typo3DbBackend ignores TCA's MM_match_fields 
option which makes it impossible to work with MM relations that use the 
same MM table for storing the relations (differentiation by tablenames 
field).

But: This is exactly like sys_category is supposed to work. This means 
that sys_category can only be used with extbase if a single table makes 
use of the categorization. As soon as sys_category is used for more 
than one table (e.g. by another extension) things will start to go 
wrong and DB queries for all tables using the categories will yield 
strange results.

Question: The target version for this change is set to 6.3, implying 
there won't be a fully working sys_category/extbase combination for 6.2 
LTS. I would definitely plead to have this already in 6.2 and not in 
6.3. What is your opinion?

Cheers and best regards,
Torsten