This changes the procedure in UPDATING to use etcupdate over megemaster. This follows the recommandations in the handbook diff at D27848.
Could you please add PR: 252417 to the commit message?
This advice can actually break a system if the new etcupdate relies on behavior/code from the newly built world.
Please remove this comment or add similar advice to the original advice, noting the potential pitfall of using etcupdate(8), which can be incompatible with the old installed world.
This was also the case for mergemaster too. Oof... that was bad advice.
Thanks for the review! I don't have a bit but I have updated the description with the PR number.
So the comment that was there before is also applicable for worlds after 20130425 and 20130430? As the message only hints for the pitfall if we are updating from before these revisions (the way I interpret it, possibly incorrect though). Or is it a possible pitfall in general? If so I would just drop the specific revisions mentioned there as its confusing.