Patch set 2 for branch master of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at https://review.typo3.org/57344

Patch set 3 for branch master of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at https://review.typo3.org/57344

Patch set 4 for branch master of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at https://review.typo3.org/57344

Patch set 5 for branch master of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at https://review.typo3.org/57344

Patch set 6 for branch master of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at https://review.typo3.org/57344

Patch set 7 for branch master of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at https://review.typo3.org/57344

Sebastian Klein wrote:

I agree this should be implemented for CKEDitor in TYPO3 v8 and above.

Aside from the task of implementation, I see the following issue:
The editor can't easily see if and where he (or other editors) added a ­ entity. Even in the source view it currently isn't shown. You can only use the arrow keys on your keyboard to navigate left or right and see if the cursor stops at a position in the text.

This already was an issue in the old RTEHtmlArea.

A current workaround:¶

I already built an CKEditor plugin which is far from perfect:
https://github.com/sebkln/linebreak

It does add the ­ entity as well as the <wbr> tag for linebreaks without hyphenation. The plugin also shows the editor where ­ entities were added. For this I added a wrap with additional CSS, which is also the major drawback of this plugin: this wrap is saved to the database with the rest of the text. In the frontend, several lines of TypoScript have to be added to remove the wrap inside paragraphs and lists.

I don't know if it's possible to add such a wrap only for the RTE, without saving it to the database and have the need to extend parseFunc that much?

tl;dr¶

• soft hyphen button should be added to the CKEditor
• inserted hyphens should be visible to the editors

We should definitely add such a feature to improve the UI/UX of the editor.

I ask you to create your own issue for your idea. This is a task which should also be migrated in 8.7.

I see the visualization of one or more invisible characters in a separate feature which must be loaded in another plugin, since there is also the case that content is not only entered through the manual input in the RTE (for example, an import / API). Such functionality would make sense to load in each RTE preset for the WYSIWYG mode.

Beside of that I see it problematically, if such pseudo-temporary html tags are used inside the database for such characters

Patch set 1 for branch TYPO3_8-7 of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at https://review.typo3.org/57373