On Wed, Mar 22, 2023 at 11:06 PM Brian Wolff <bawolff@gmail.com> wrote:

This kind of sounds like a non-answer, but its mostly useful if you want a hash of the revision. I dont think mw core really uses it, but it can be useful for quickly detecting duplicate revisions. I think primarily it is for external users.

Core does duplicate detection (when so configured) for adding the revert / reverted change tags. 

On Thu, Mar 23, 2023 at 4:03 AM Vi to <vituzzu.wiki@gmail.com> wrote:

Afair this avoids a new rev to be createad if you click "save" without changing contents.

That actually uses to slot sha1 now (I guess as a micro-optimization because that way you don't need to re-hash slots which weren't edited).

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