TYPO3 Core

Basically it's quite simple:

It should be possible to influence the transformation on the way from DB to RTE and from RTE to DB, apart from the existing marginal possibilities, so that a complete modification/replacement of elements can be accomplished on PHP level.

For example, I use my extension to replace an entire <span> tag with something else (img, svg, etc.).

My current implementation, since version 12, looks like this:

https://github.com/quellenform/t3x-iconpack/blob/b146710442aaf307e56eab497d0a04741cf873bd/Classes/Xclass/RteHtmlParser.php#L68
https://github.com/quellenform/t3x-iconpack/blob/b146710442aaf307e56eab497d0a04741cf873bd/Classes/Xclass/RteHtmlParser.php#L91

Basically, I only add two lines, which could actually be described as "post/pre-processing".

A PSR14 event with regard to version 13 is probably the right choice here. However, I wouldn't presume to suggest a viable solution as I don't currently have much insight into v13.

Patch set 2 for branch main of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at https://review.typo3.org/c/Packages/TYPO3.CMS/+/85079

Patch set 3 for branch main of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at https://review.typo3.org/c/Packages/TYPO3.CMS/+/85079

Patch set 4 for branch main of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at https://review.typo3.org/c/Packages/TYPO3.CMS/+/85079

I can't really judge the impact on other situations, but I have just successfully tested this for my particular use case and XCLASS is no longer necessary. Thank you!

Patch set 5 for branch main of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at https://review.typo3.org/c/Packages/TYPO3.CMS/+/85079

Patch set 6 for branch main of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at https://review.typo3.org/c/Packages/TYPO3.CMS/+/85079

Patch set 7 for branch main of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at https://review.typo3.org/c/Packages/TYPO3.CMS/+/85079

Patch set 8 for branch main of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at https://review.typo3.org/c/Packages/TYPO3.CMS/+/85079