Automatically remove block patterns if one or more of the blocks has been unregistered using unregisterBlockType

[philbuchanan]

If a block has been unregistered with unregisterBlockType(), patterns that use that block still show up in the "Patterns" tab of the block inserter. It shows an error message on the preview as well as when adding that pattern.
It would be great if patterns that include a block that has been unregistered were automatically unregistered themselves (with register_block_pattern()).

Screenshots

Editor version

• WordPress version: 5.4.2
• Gutenberg plugin version: 8.5.0

Additional Context

I have a plugin that replaces the default columns block with a much more powerful version. I unregister the built in core/columns block so I don't confuse users with multiple blocks with the same name.

[jordesign]

@priethor Can I please get a gut check. It sounds like (based on the below comment from #26607) that this may be resolved now?

I'm not sure what I was thinking, but this is all possible via the block_editor_settings filter, which has been there all along. :)

[priethor]

@jordesign, as far as I understand, the filter doesn't solve this particular issue automatically, as you still need to disable the patterns apart from the blocks. However, there have been many recent changes in patterns, and it would be good to double-check whether this condition is already managed automatically or the issue still persists.

[qoorus]

I tested it on WordPress 6.4.3 and was able to reproduce it.
I think this error message is necessary.
This is because if you unregister a block and then register it again, if it has disappeared from the pattern, it becomes impossible to fix.

[youknowriad]

I don't think we should be unregistering the patterns automatically. There's a lot of different reasons for the block to not be available but maybe we should hide the message in "preview mode".

[youknowriad]

I found that this is a duplicate of #31706 which has more discussion in it. So I'm closing this one.