2015-08-28 22:44 GMT+02:00 J. Bruce Fields [off-list ref]:

quoted

The MAY_DELETE_SELF permission does not override the sticky
directory check.  It probably should.

I guess it would basically just let the file owner delegate permission
to delete your file to a non-owner?  Makes sense to me to allow that.

Yes, independent of whether or not the process has MAY_DELETE_CHILD
access on the directory but not independent of the sticky directory
check, which is a bit of a weird combination.

Andreas