TYPO3 Core

The cshmanual was made required in #40665 because the csh popups throw exceptions if the extension is not loaded.

Background: The script for the manual popups was typo3/view_help.php in 4.7 and was moved to ext:cshmanual in order to reduce the number of entry points (it now goes through mod.php).
Funnily, the main ? symbols still work with basic information, only the csh manual popup is broken if the extension is removed from REQUIRED_EXTENSIONS list.

I think, it should be possible to unload the extension again. Imho, the popup link should then just not be rendered.

If someone wants to fix that: At first glance it looks like as if the according .js script is t3lib/js/extjs/notifications.js ... this might need some adaption.

Ok, I have not seen the #40665...

But for me this extension is not a required extension because the system is not depending on it.

It would be great if this extension can be unloaded ans then the popup link is not rendered.

Thanks Christian for the explanation!

In fact the extension "cshmanual" must be required only if "context_help" is loaded... True?

Thanks.