slight sorting improvement

auctions_frame.lua

@@ -69,7 +69,7 @@ function private.update_listing()
             record = auction_record,
         })
     end
-    sort(auction_rows, function(a, b) return a.record.name < b.record.name or (b.record.name == b.record.name and a.record.search_signature < b.record.search_signature) end)
+    sort(auction_rows, function(a, b) return Aux.sort.multi_lt(a.record.name, b.record.name, a.record.search_signature, b.record.search_signature, tostring(a.record), tostring(b.record)) end)
 
     private.listing:SetData(auction_rows)
     private.listing:SetSelection(function(row) return row.record == selected_auction end)
@@ -204,7 +204,6 @@ function private.on_row_click(auction_record)
 --    else
     local express_mode = IsAltKeyDown()
     if express_mode then
-        selected_auction = nil
         private.find_auction_and_cancel(auction_record)
     else
         selected_auction = auction_record

bids_frame.lua

@@ -89,7 +89,7 @@ function private.update_listing()
             record = auction_record,
         })
     end
-    sort(auction_rows, function(a, b) return a.record.name < b.record.name or (b.record.name == b.record.name and a.record.search_signature < b.record.search_signature) end)
+    sort(auction_rows, function(a, b) return Aux.sort.multi_lt(a.record.name, b.record.name, a.record.search_signature, b.record.search_signature, tostring(a.record), tostring(b.record)) end)
 
     private.listing:SetData(auction_rows)
     private.listing:SetSelection(function(row) return row.record == selected_auction end)
@@ -236,7 +236,6 @@ function private.on_row_click(auction_record)
     local express_mode = IsAltKeyDown()
     local buyout_mode = express_mode and arg1 == 'LeftButton'
     if express_mode then
-        selected_auction = nil
         private.find_auction_and_bid(auction_record, buyout_mode)
     else
         selected_auction = auction_record

post_frame.lua

@@ -51,7 +51,7 @@ function private.update_auction_listing()
                 record = auction_record,
             })
         end
-        sort(auction_rows, function(a, b) return a.record.unit_buyout_price < b.record.unit_buyout_price end)
+        sort(auction_rows, function(a, b) return Aux.sort.multi_lt(a.record.unit_buyout_price, b.record.unit_buyout_price, tostring(a.record), tostring(b.record)) end)
     end
     private.auction_listing:SetData(auction_rows)
     private.auction_listing:SetSelection(function(row) return row.record == private.selected_auction() end)

sort.lua

@@ -81,4 +81,13 @@ function public.compare_from_lt(lt)
             return public.EQ
         end
     end
+end
+
+function public.multi_lt(...)
+    for i=1,arg.n-1,2 do
+        if arg[i] ~= arg[i+1] then
+            return arg[i] < arg[i+1]
+        end
+    end
+    return false
 end