The tag alias #75807 rooflegs -> roof_legs has been approved.
Reason: The artist uses a version with and without a space on different platforms: https://e621.net/artists/37802
Their e621 handle and the verified artist use the version with the space, so that is likely the preferred version.
EDIT: The tag alias rooflegs -> roof_legs (forum #443001) has been approved by @spe.
Updated by auto moderator