[TYPO3-core] Language fallback problems in 4.5 - 6.0

[Jigal van Hemert]

Hi,

There is an old (5 years old) problem with the config.sys_language_mode 
= content_fallback setting, menus and the page title.
In the mean time there are of course multiple issues about this and at 
the moment work is going on with two of them.

First we have #17354 [1]. There is a patch which is far from backwards 
compatible. This is not surprising because fixing it will break the 
current (incorrect) behaviour. It currently creates new API functions 
and a new setting. The patch is only targeted for 6.0, so 4.5-4.7 will 
stay broken.

The second issue is #19114 [2]. There is a patch which does not fix 
everything, but it does not involve new settings and API changes.

The problem is a nasty one regarding the way to fix it. Sites probably 
are used to the current, incorrect, behaviour and will break if it is 
fixed. Furthermore it needs to be fixed in 4.5 - 6.0

My idea is that instead of the new API functions and new configuration 
setting we could have a new option to switch between the old, incorrect 
behaviour and the new, correct behaviour. For 6.0 and fresh 
installations of 4.5-4.7 this switch should be for the new behaviour as 
default and for bugfix-release upgrades it should be for the old 
behaviour as default.
In the Install Tool / Upgrade Wizard we could let the integrator make a 
choice for this switch and deprecate it immediately.

What do you think?

[1] http://forge.typo3.org/issues/17354
[2] http://forge.typo3.org/issues/19114

-- 
Jigal van Hemert
TYPO3 Core Team member

TYPO3 .... inspiring people to share!
Get involved: typo3.org