Integrate possibility to validate custom links for RTEhtmlare disposal
In RTEhtmlarea there's a possibility to define custom links, e.g. by using a link handler. It might happen, that the name of the linkhandler (defined in $TYPO3_CONF_VARS['SC_OPTIONS']['tslib/class.tslib_content.php']['typolinkLinkHandler']) is different to the used link prefix (e.g. "linkhandler" vs. "myOwnLinkhandler:"). Furthermore it can happen that those custom links are not defined using a linkhandler at all.
Links that could not be validated by the current strict mechanism are shown as invalid in RTEhtmlarea.
The solution is to integrate a new hook that can take care of that validation in general.
(issue imported from #M10872)
#3 Updated by Oliver Hader about 4 years ago
The whole thing was related to https://github.com/Intera/typo3-extension-linkhandler back then. However, I cannot really remember the use case.
If custom links are prefixed with the name of the linkhandler (e.g. "record:" for the references extension on GitHub) everything is fine.