[TYPO3-core] RFC: a hook in TCEforms to complement hook in TCEmain

[Dmitry Dulepov [typo3]]

Hi!

This is SVN patch request.

Branches: trunk *and* 4.1

Problem: currently TCEmain has a hook for evaluating values. This way 
you can transform 123 to 456 on saving. But there is no opposite hook in 
TCEforms, so you cannot translate 456 back to 123 in TCEforms. Currently 
it means that punycode domains can be encoded using hook but decoding 
must XCLASS tceform, which is bad.

Solution: add hook to TCEforms. I made a simplest version of hook, which 
accepts only value. I though about sending more parameters but hook in 
TCEmain does not accept them either, so they will be useless in the 
context of the hook class.

I want this hook in both trunk and 4.1 to give access to extended domain 
names without a need to xclass the core in earlier versions.

-- 
Dmitry Dulepov
TYPO3 freelancer / TYPO3 core team member
Web: http://typo3bloke.net/
Skype: callto:liels_bugs
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