diff --git a/core/history.lua b/core/history.lua
index de24196..90ef580 100644
--- a/core/history.lua
+++ b/core/history.lua
@@ -97,10 +97,10 @@ end
 function weighted_median(list)
 	sort(list, function(a,b) return a.value < b.value end)
 	local weight = 0
-	for _, element in ipairs(list) do
-		weight = weight + element.weight
+	for i = 1, getn(list) do
+		weight = weight + list[i].weight
 		if weight >= .5 then
-			return element.value
+			return list[i].value
 		end
 	end
 end
diff --git a/core/tooltip.lua b/core/tooltip.lua
index 5dc72e0..4bfa36c 100644
--- a/core/tooltip.lua
+++ b/core/tooltip.lua
@@ -73,7 +73,8 @@ function extend_tooltip(tooltip, link, quantity)
             if aux_tooltip_disenchant_distribution then
                 tooltip:AddLine('Disenchants into:', color.tooltip.disenchant.distribution())
                 sort(distribution, function(a,b) return a.probability > b.probability end)
-                for _, event in ipairs(distribution) do
+                for i = 1, getn(distribution) do
+	                local event = distribution[i]
                     tooltip:AddLine(format('  %s%% %s (%s-%s)', event.probability * 100, info.display_name(event.item_id, true) or 'item:' .. event.item_id, event.min_quantity, event.max_quantity), color.tooltip.disenchant.distribution())
                 end
             end
diff --git a/frame.lua b/frame.lua
index ad8c3da..8a6a7b0 100644
--- a/frame.lua
+++ b/frame.lua
@@ -3,8 +3,8 @@ module 'aux'
 local gui = require 'aux.gui'
 
 function LOAD()
-	for _, info in ipairs(tab_info) do
-		tabs:create_tab(info.name)
+	for i = 1, getn(tab_info) do
+		tabs:create_tab(tab_info[i].name)
 	end
 end
 
diff --git a/gui/auction_listing.lua b/gui/auction_listing.lua
index 116b810..62f2cb5 100644
--- a/gui/auction_listing.lua
+++ b/gui/auction_listing.lua
@@ -12,7 +12,6 @@ local search_tab = require 'aux.tabs.search'
 
 _G.aux_price_per_unit = false
 
-local RT_COUNT = 1
 local HEAD_HEIGHT = 27
 local HEAD_SPACE = 2
 
@@ -714,7 +713,8 @@ local methods = {
             end
         end
 
-        for _, info in ipairs(self.rowInfo) do
+	    for i = 1, getn(self.rowInfo) do
+		    local info = self.rowInfo[i]
             local totalAuctions, totalPlayerAuctions = 0, 0
             for _, childInfo in info.children do
                 totalAuctions = totalAuctions + childInfo.numAuctions
@@ -781,8 +781,8 @@ local methods = {
                 return tostring(a) < tostring(b)
             end
 
-            for _, info in ipairs(self.rowInfo) do
-                sort(info.children, sort_helper)
+            for i = 1, getn(self.rowInfo) do
+                sort(self.rowInfo[i].children, sort_helper)
             end
             sort(self.rowInfo, sort_helper)
             self.isSorted = true
@@ -790,11 +790,13 @@ local methods = {
 
         -- update all the rows
         local rowIndex = 1 - FauxScrollFrame_GetOffset(self.scrollFrame)
-        for _, info in ipairs(self.rowInfo) do
+        for i = 1, getn(self.rowInfo) do
+	        local info = self.rowInfo[i]
             if self.expanded[info.expandKey] then
                 -- show each of the rows for this base item since it's expanded
-                for i, childInfo in ipairs(info.children) do
-                    self:SetRowInfo(rowIndex, childInfo.record, childInfo.numAuctions, 0, i > 1, false, info.expandKey, childInfo.numAuctions)
+                for j = 1, getn(info.children) do
+	                local childInfo = info.children[j]
+                    self:SetRowInfo(rowIndex, childInfo.record, childInfo.numAuctions, 0, j > 1, false, info.expandKey, childInfo.numAuctions)
                     rowIndex = rowIndex + 1
                 end
             else
@@ -959,8 +961,8 @@ local methods = {
     GetSelection = function(self)
         if not self.selected then return end
         local selectedData
-        for _, info in ipairs(self.rowInfo) do
-            for _, childInfo in info.children do
+        for i = 1, getn(self.rowInfo) do
+            for _, childInfo in self.rowInfo[i].children do
                 if childInfo.record.search_signature == self.selected.search_signature then
                     selectedData = childInfo
                     break
@@ -972,8 +974,8 @@ local methods = {
 
     GetTotalAuctions = function(self)
         local numResults = 0
-        for _, info in ipairs(self.rowInfo) do
-            for _, childInfo in info.children do
+        for i = 1, getn(self.rowInfo) do
+            for _, childInfo in self.rowInfo[i].children do
                 numResults = numResults + childInfo.numAuctions
             end
         end
@@ -982,8 +984,6 @@ local methods = {
 }
 
 function M.CreateAuctionResultsTable(parent, config)
-
-    RT_COUNT = RT_COUNT + 1
     local rt = CreateFrame('Frame', nil, parent)
     rt.config = config
     local numRows = 16
@@ -1038,7 +1038,8 @@ function M.CreateAuctionResultsTable(parent, config)
 
     -- create the header cells
     rt.headCells = T
-    for i, column_config in ipairs(rt.config) do
+    for i = 1, getn(rt.config) do
+	    local column_config = rt.config[i]
         local cell = CreateFrame('Button', nil, rt.contentFrame)
         cell:SetHeight(HEAD_HEIGHT)
         if i == 1 then
diff --git a/tabs/post/core.lua b/tabs/post/core.lua
index 6f573fc..a7d2b77 100644
--- a/tabs/post/core.lua
+++ b/tabs/post/core.lua
@@ -115,8 +115,8 @@ function update_auction_listing()
         local unit_start_price = get_unit_start_price()
         local unit_buyout_price = get_unit_buyout_price()
 
-        for i, auction_record in ipairs(existing_auctions[selected_item.key] or empty) do
-
+        for i = 1, getn(existing_auctions[selected_item.key] or empty) do
+	        local auction_record = existing_auctions[selected_item.key][i]
             local blizzard_bid_undercut, buyout_price_undercut = undercut(auction_record, stack_size_slider:GetValue())
             blizzard_bid_undercut = money.from_string(money.to_string(blizzard_bid_undercut, true, nil, 3))
             buyout_price_undercut = money.from_string(money.to_string(buyout_price_undercut, true, nil, 3))
diff --git a/tabs/search/filter.lua b/tabs/search/filter.lua
index 5b9554b..1b139e0 100644
--- a/tabs/search/filter.lua
+++ b/tabs/search/filter.lua
@@ -155,7 +155,8 @@ end
 
 function set_form(filter)
 	clear_form()
-	for _, component in ipairs(filter.components) do
+	for i = 1, getn(filter.components) do
+		local component = filter.components[i]
 		if component[1] == 'blizzard' then
 			blizzard_query[component[2]] = component[4]
 		else
@@ -201,13 +202,14 @@ function formatted_post_filter(components)
 	local stack = temp-T
 	local str = ''
 
-	for i, component in ipairs(components) do
+	for i = 1, getn(components) do
+		local component = components[i]
 		if no_line_break then
 			str = str .. ' '
 		end
 		str = str .. '</p><p>'
 		for _ = 1, getn(stack) + 1 do
-			str = str .. color.content.background('----')
+			str = str .. color.content.background'----'
 		end
 		no_line_break = component[1] == 'operator' and component[2] == 'not'
 
diff --git a/tabs/search/saved.lua b/tabs/search/saved.lua
index 6204a0f..44e380c 100644
--- a/tabs/search/saved.lua
+++ b/tabs/search/saved.lua
@@ -8,7 +8,8 @@ _G.aux_recent_searches = T
 
 function update_search_listings()
 	local favorite_search_rows = T
-	for i, search in ipairs(aux_favorite_searches) do
+	for i = 1, getn(aux_favorite_searches) do
+		local search = aux_favorite_searches[i]
 		local name = strsub(search.prettified, 1, 250)
 		tinsert(favorite_search_rows, O(
 			'cols', A(O('value', search.auto_buy and color.red'A' or ''), O('value', name)),
@@ -19,11 +20,12 @@ function update_search_listings()
 	favorite_searches_listing:SetData(favorite_search_rows)
 
 	local recent_search_rows = T
-	for i, recent_search in ipairs(aux_recent_searches) do
-		local name = strsub(recent_search.prettified, 1, 250)
+	for i = 1, getn(aux_recent_searches) do
+		local search = aux_recent_searches[i]
+		local name = strsub(search.prettified, 1, 250)
 		tinsert(recent_search_rows, O(
 			'cols', A(O('value', name)),
-			'search', recent_search,
+			'search', search,
 			'index', i
 		))
 	end
diff --git a/util/completion.lua b/util/completion.lua
index 359dd61..1a83700 100644
--- a/util/completion.lua
+++ b/util/completion.lua
@@ -18,16 +18,16 @@ function M:complete_filter()
 	local start_index, _, current_modifier = strfind(filter_string, '([^/;]*)$')
 	current_modifier = current_modifier or ''
 
-	for _, suggestion in ipairs(suggestions) do
-		if strsub(strupper(suggestion), 1, strlen(current_modifier)) == strupper(current_modifier) then
-			this:SetText(strlower(strsub(filter_string, 1, start_index - 1) ..  suggestion))
+	for i = 1, getn(suggestions) do
+		if strsub(strupper(suggestions[i]), 1, strlen(current_modifier)) == strupper(current_modifier) then
+			this:SetText(strlower(strsub(filter_string, 1, start_index - 1) ..  suggestions[i]))
 			this:HighlightText(strlen(filter_string), -1)
 			return
 		end
 	end
 end
 
-function M.complete(options)
+function M.complete(candidates)
 	return function(self)
 		if IsControlKeyDown() then -- TODO problem is ctrl-v, maybe find a better solution
 			return
@@ -35,9 +35,10 @@ function M.complete(options)
 
 		local text = self:GetText()
 
-		for _, item_name in ipairs(options()) do
-			if strsub(strupper(item_name), 1, strlen(text)) == strupper(text) then
-				self:SetText(strlower(item_name))
+		local t = temp-candidates()
+		for i = 1, getn(t) do
+			if strsub(strupper(t[i]), 1, strlen(text)) == strupper(text) then
+				self:SetText(strlower(t[i]))
 				self:HighlightText(strlen(text), -1)
 				return
 			end
diff --git a/util/filter.lua b/util/filter.lua
index 54757c3..2b2807a 100644
--- a/util/filter.lua
+++ b/util/filter.lua
@@ -340,7 +340,8 @@ function M.query(filter_string)
     end
 
     local polish_notation_counter = 0
-    for _, component in ipairs(filter.post) do
+    for i = 1, getn(filter.post) do
+	    local component = filter.post[i]
         if component[1] == 'operator' then
             polish_notation_counter = max(polish_notation_counter, 1)
             polish_notation_counter = polish_notation_counter + (tonumber(component[2]) or 1) - 1
@@ -370,8 +371,8 @@ end
 function M.queries(filter_string)
     local parts = split(filter_string, ';')
     local queries = T
-    for _, str in ipairs(parts) do
-        str = trim(str)
+    for i = 1, getn(parts) do
+        local str = trim(parts[i])
         local query, _, error = query(str)
         if not query then
 	        return nil, error