Other addons used Atr_SearchAH(ListName, items) - now broken. This was an unofficial way to search for a list of items

Proposed API:

Auctionator.API.v1.Initialise()
Auctionator.API.v1.MultiSearch(terms)
Auctionator.API.v1.ReplaceList(listName, terms) -- Replaces an existing list, or creates a new one

With these functions giving an error if called when the ah isn't open.

Hopefully this will leave us with enough implementation flexibility to completely redo the internal details without changing the API. Changing the API is something we'd like to avoid.

For ATT, only reason it broke was because of:

Was: if AuctionFrame and AuctionFrame:IsShown() then
Now: if AuctionHouseFrame and AuctionHouseFrame:IsShown() then

But the overall string with:
Atr_SelectPane(3);
Atr_SearchAH(L["TITLE"], missingItems, LE_ITEM_CLASS_ARMOR);
and
Atr_SelectPane(3);
Atr_SetSearchText (name);
Atr_Search_Onclick ();

All just simply broke :)

The Atr_ stuff is being removed (it's ancient). We could probably put some fake Atr_ functions in to make it look like the API hasn't changed, but, more likely than not, fixing this is going to require changes in the other add-on to work with the new APIs.