**Feature summary**
[[https://www.mediawiki.org/wiki/Manual:Block_and_unblock#Partial_blocks|Partial Block]] feature supports blocking a user from editing a specific existing page. It is useful when a user is particularly vandalizing that page and we would not like to prevent them from editing other pages.
This task proposes that we should be able to block a user from editing a non-existent page (i.e. creating a specific title) too.
**Use case(s)**
Desirable for users who keep creating a specific page in inappropriate ways (e.g., an article about themself), but are doing useful edits in other topics. See also [[T213837#7589467]]
**Benefits**
Currently, we either have to fully block the user, or protect the page at a higher level than what they can edit (e.g. at "sysop" level). Both of these approaches have undesirable side effects.
**Implications**
The current structure of [[https://www.mediawiki.org/wiki/Manual:Ipblocks_restrictions_table|ipblocks_restrictions table]] will not support this, as it identifies the target pages of a block using their id, and the page_id of all non-existent titles is 0. This will require modifying that table or adding a separate table.