Prevent "not X" terms from matching file names when building file configurations; object fields are not nil if not set (instead of empty table)

src/base/api.lua

@@ -1191,7 +1191,7 @@
 
 		-- initialize list-type fields to empty tables
 		for name, field in pairs(premake.fields) do
-			if (field.kind ~= "string" and field.kind ~= "path") then
+			if field.kind:endswith("-list") then
 				cfg[name] = { }
 			end
 		end

src/base/bake.lua

@@ -412,7 +412,7 @@
   		if(not cfg) then return end
   		
   		local foundUsePrjs = {};
-  		for _, useName in ipairs(cfg[searchField]) do
+  		for _, useName in ipairs(cfg[searchField] or {}) do
   			local testName = useName:lower();
   			if((not foundList[testName])) then
   				local theProj = nil;

src/project/oven.lua

@@ -236,12 +236,13 @@
 	function oven.filter(block, anyOfThese, allOfThese)
 		allOfThese = allOfThese or {}
 		
-		-- All of these terms must match at least one block keyword
+		-- All of these terms must match at least one block keyword;
+		-- negative matches (i.e. "not X") do not count
 		for _, term in ipairs(allOfThese) do
 			local matched = false
 
 			for _, keyword in ipairs(block.keywords) do
-				if oven.testkeyword(keyword, { term }) then
+				if oven.testkeyword(keyword, { term }, true) then
 					matched = true
 					break
 				end
@@ -271,14 +272,21 @@
 --    The keyword to test.
 -- @param terms
 --    The list of terms to filter against.
+-- @param skipNots
+--    Boolean flag indicating whether negative matches (i.e. "not X")
+--    should be considered (they are not for filename searches).
 -- @returns
 --    True if the keyword matches at least one filter term.
 --
 
-	function oven.testkeyword(keyword, terms)
+	function oven.testkeyword(keyword, terms, skipNots)
 		if keyword:startswith("not ") then
+			if skipNots then
+				return false
+			else
 				return not oven.testkeyword(keyword:sub(5), terms)
 			end
+		end
 		
 		for _, pattern in ipairs(keyword:explode(" or ")) do
 			for _, term in pairs(terms) do

tests/config/test_fileconfig.lua

@@ -101,3 +101,19 @@
 		prepare()
 		test.isequal({ "-Xc" }, fcfg.buildoptions)
 	end
+
+
+--
+-- A "not" filter should not provide the positive match for a
+-- file configuration filename mask.
+--
+
+	function suite.fileIsUnmatched_onNotFilter()
+		files "hello.c"
+		configuration "not Debug"
+		buildoptions "-Xc"
+		prepare()
+		test.isnil(fcfg.buildoptions)
+	end
+	
+