Forbid certain types for directive (should be configurable) with an optional replacement

[OskarStark]

Spotted in

• https://github.com/symfony/symfony-docs/pull/18012/files

cc @alamirault

[OskarStark]

Or we can create a rule which only allows x,y,z type for directive N, maybe that's better, because the input can differ (typos etc.)

[MrYamous]

Hello :)
I looked at the existing rules when making the pr on docs. The attribute was spotted as non existent so i guess job was done, wasn't ?

[OskarStark]

No I am thinking about a rule where the project can define allowed code-block directive types.

Symfony would allow:
php-attributes
php-standalone
yaml

Etc.

The referenced PR would then fail with sth like:

"Type "attribute" is not allowed for code-block directive. Allowed ones are: ......"

I hope it's more clear now