AlternativeClassicActionBars and UnitPlates, both now in `other-addons/`
(untracked — third-party source, not ours to vendor). Measured with the survey
and the read-back probe on a root holding only those two, so neither borrows the
other's globals. Both already loaded clean; three things were missing, and the
first was costing an entire addon's keybinding surface.
**A binding table spelled `bindings.xml`.** `ui_script::addons` asks for
`Bindings.xml` by the reference's own fixed name — `0x51f400` reads the name,
not a `.toc` entry — and the open was case-sensitive, so on Linux ACAB's 69
`<Binding>` rows never registered. Silently: an absent binding table is the
normal case, so nothing raised and nothing warned. Hover-bind, edit-mode escape
and every bar page key were dead. The texture and font side of the same file
namespace has always resolved case-insensitively (`loose_addon_file`, which
walks the path a component at a time and enumerates a directory when the spelling
does not match); the Lua and XML side now shares one resolver with it, and both
crates' private `read_under` copies delegate to it. Measured after: 69 bindings
listed by `GetBinding`, `SetBinding("CTRL-9", "ACABBIND1")` round-trips, and the
addon's drawn-frame count went 42 -> 175, because its login sequence had been
stopping short of its own bars.
**`PixelUtil`.** Called unguarded on ACAB's bar-geometry path at four sites,
three of them the same question — one screen pixel in UI units, which is what
every pixel-perfect border in that addon is drawn from. Not in ClassicAPI's
published list, but ACAB disables itself without ClassicAPI, so on this server's
kit it is present by implication. A Lua chunk beside `math_ext`, whose `Round` it
uses. One deviation, written down where it lives: upstream reads
`region:GetEffectiveScale()`, which a 1.12 texture does not answer, so the scale
read falls back to the parent and then `UIParent` — the same number in every case
that matters.
**`UnitXP("nop", "nop")` answering the boolean.** The presence probe.
SuperCleveRoidMacros keeps only `pcall`'s `ok`, but ACAB's `HasUnitXPSP3` wants
`ok and result == true`, and the fall-through handed it the stock XP getter's
`0` — truthy, so it passed the loose reading and failed the strict one. ACAB
reported UnitXP_SP3 absent on a client that answers the whole family.
Left alone with the reason in `docs/ADDON_COMPAT.md`: `IsStackableAction`
(post-1.12, guarded, and stock 1.12's own ActionButton.lua shows a count off
`IsConsumableAction` alone), `CursorHasMacro` (post-1.12 and redundant — ACAB
tests `GetCursorInfo() == "macro"` first), and five third-party tables that are
missing because those addons are not installed.
The harness grew a `--plates [n]` step, because a nameplate addon is the one kind
it could not see working: the subject is a `WorldFrame` child `vplates.rs` mints
per frame, so with none seated the addon's scan finds nothing, does nothing, and
reports a clean load over an empty screen. It seats n live plates and counts how
many an addon hung a frame on, which doubles as the contract check on the plate's
own shape — a plate that stopped being a `Button`, or stopped putting its border
texture first, would read as an addon adopting nothing. UnitPlates adopts every
plate and reads its name, health and level off ours.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01SgstFWtn1RxEJ5kVrpgYwn
gromandClaude Opus 5
f3fec804eb