Added ability for duplicate build commands to be specified. Fixes #540

src/_premake_init.lua

@@ -845,6 +845,7 @@
 		kind = "list:string",
 		tokens = true,
 		pathVars = true,
+		allowDuplicates = true,
 	}
 
 	api.register {
@@ -861,6 +862,7 @@
 		kind = "list:string",
 		tokens = true,
 		pathVars = true,
+		allowDuplicates = true,
 	}
 
 	api.register {

src/base/api.lua

@@ -903,8 +903,8 @@
 -- contain any other kind of data.
 ---
 
-	local function storeListItem(current, item)
-		if current[item] then
+	local function storeListItem(current, item, allowDuplicates)
+		if not allowDuplicates and current[item] then
 			table.remove(current, table.indexof(current, item))
 		end
 		table.insert(current, item)
@@ -937,13 +937,13 @@
 		if type(value) == "table" then
 			if #value > 0 then
 				for i = 1, #value do
-					storeListItem(current, value[i])
+					storeListItem(current, value[i], field.allowDuplicates)
 				end
 			elseif not table.isempty(value) then
-				storeListItem(current, value)
+				storeListItem(current, value, field.allowDuplicates)
 			end
 		elseif value then
-			storeListItem(current, value)
+			storeListItem(current, value, field.allowDuplicates)
 		end
 
 		return current
@@ -953,7 +953,7 @@
 	local function mergeList(field, current, value, processor)
 		value = value or {}
 		for i = 1, #value do
-			storeListItem(current, value[i])
+			storeListItem(current, value[i], field.allowDuplicates)
 		end
 		return current
 	end

tests/actions/vstudio/vc2010/test_build_events.lua

@@ -85,6 +85,17 @@
 	end
 
 
+--
+-- Multiple of the same command should be emit.
+--
+
+	function suite.onCommandTwice()
+		postbuildcommands { "command", "command" }
+		prepare()
+		test.capture ("<PostBuildEvent>\n\t<Command>command\r\ncommand</Command>\n</PostBuildEvent>\n")
+	end
+
+
 
 --
 -- Quotes should not be escaped, other special characters should.