bug#17234: 24.3.50; overlay priority : cons cells make an error in ediff

[Stefan Monnier]

> extent-at in lucid.el
> ps-generate-postscript-with-faces1 in ps-def.el

Indeed.  And htmlize also.

> The least you can do is make an "incompatible change" NEWS entry.

Not sure which part is incompatible.

> Ideally it would it explain what to do if you still want to get the
> priority of an overlay as a number.

You don't, really.  But I've added an argument `sorted' to overlays-at
which seems to provide the information that was really needed in the
above cases.


        Stefan