added seller filter

tabs/search/filter.lua

@@ -323,7 +323,7 @@ function set_filter_display_offset(x_offset, y_offset)
 end
 
 function initialize_filter_dropdown()
-	for _, filter in ipairs(T.temp-T.list('and', 'or', 'not', 'price', 'profit', 'vendor-profit', 'disenchant-profit', 'percent', 'bid-price', 'bid-profit', 'bid-vendor-profit', 'bid-disenchant-profit', 'bid-percent', 'item', 'tooltip', 'min-level', 'max-level', 'rarity', 'left', 'utilizable')) do
+	for _, filter in ipairs(T.temp-T.list('and', 'or', 'not', 'price', 'profit', 'vendor-profit', 'disenchant-profit', 'percent', 'bid-price', 'bid-profit', 'bid-vendor-profit', 'bid-disenchant-profit', 'bid-percent', 'item', 'tooltip', 'min-level', 'max-level', 'rarity', 'left', 'utilizable', 'seller')) do
 		UIDropDownMenu_AddButton(T.map(
 			'text', filter,
 			'value', filter,

util/filter.lua

@@ -179,6 +179,15 @@ M.filters = {
             end
         end
     },
+
+    ['seller'] = {
+        input_type = 'string',
+        validator = function(name)
+            return function(auction_record)
+                return auction_record.owner and strupper(name) == strupper(auction_record.owner)
+            end
+        end
+    },
 }
 
 function operator(str)