WikiPatch (also considered as WikiDiff (already exists), DiffWiki (already exists), and WikiPatch again (exists but whatever) is Aaron Liu's ingenious [sic] proposal for an extension to federate MediaWiki.
Mechanicsm edit
The extension introduces a Patch: namespace that stores diffs of the instance's edits to a foreign page. Titles inside the Patch:namespace are like "Patch:<interwiki prefix>:<lang>:<foreign page name>". When not specified, the interwiki prefix and lang is automatically replaced with values defined by the wiki with $wg-magic (defaulting to the English Wikipedia), which will be part of the title blacklist or sth to avoid duplication. Patch: pages store both the diff so far and the revision the diff was intended to apply to. With every view of a foreign article, a separate "latest applicable revision" is also stored; if the diff doesn't apply, we apply the diff to the latest applicable revision and provide a button to fallback to the revision the diff originally applied to.
Interwiki-linked pages are displayed within the current MediaWiki instance, and clicking edit will automatically generate a diff. All this can be disabled for unfederated wikis only. A dropdown will be slapped onto the "Read" button with the most subscribed-to instances.
Devolpment edit
Ünfortunately", Aaron Liu is currently too busy procrastinating to actually learn the Gemini protocol or even PHP, the world's best fucking language. He would much prefer to code in Kotlin.
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