The post-3.4.3 ring removal bug also applied to suit when wearing a
cloak and shirt when wearing a suit or cloak or both, although it would
never give "you have nothing else to take off" because the covering item
was always present as a likely candidate. The ring fix also fixed armor.
When testing that fix, I saw "you can't take that off" for trying to take
off a suit while wearing a cloak. That isn't new or a bug, but it seemed
awfully terse so I've changed it to give "you can't take that off without
taking off your cloak first". (Likewise, "cloak", "suit", or "cloak and
suit" as appropriate when trying to take off a shirt.)
This adds new routine `suit_simple_name()', comparable to 3.4.3's
cloak_simple_name() and post-3.4.3 helm_simple_name(). No doubt there
are other places besides "without taking off your X first" that could
make use of it but I haven't attempted to track them down. The "you are
already wearing _some armor_" one doesn't quite fit. It would need to
adjust "some" to "a"/"an" at times ("some mail" or "some dragon scales"
vs "a suit" or "a jacket").
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