A frame whose unit is another unit's target (targettarget,
targettargettarget, pettarget, focustarget, partyNtarget) has no token
that unit events name, so it polled: bars every 0.2s, a full aura and
portrait rescan every second, and a GUID compare to notice swaps.
Such a frame now registers its unit events by the unit's GUID, which
every unit event also fires with, and UNIT_TARGET by the GUID of every
link of its chain. A link retargeting re-points the frame at once and
queues one full refresh; the ticks are gone. The 0.2s visibility timer
stays for them, since nothing reports a unit going out of sight.
Nameplates register UNIT_TARGET on their own token, so a mob turning to
someone else recolours its combat state immediately instead of after
the colour cache and data tick run out.
Drop pfScanActive and the namebuf delay: both guarded against the old
target-swapping range scan, which no longer exists. focus.lua's
instantRefresh was never read.
Brues
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