Fix parsing issues with or operator

internal/luacode/code.go

@@ -485,7 +485,7 @@ func (p *parser) codePostfix(fs *funcState, operator binaryOperator, e1, e2 expr
 		}
 		return e2, nil
 	case binaryOperatorOr:
-		if e1.t != noJump {
+		if e1.f != noJump {
 			return voidExpression(), errors.New("internal error: codePostfix: list should have been closed by codeInfix")
 		}
 		var err error
@@ -1105,7 +1105,7 @@ func (p *parser) toRegister(fs *funcState, e expressionDescriptor, reg registerI
 		if err := fs.patchList(e.f, final, reg, positionLoadFalse); err != nil {
 			return e, err
 		}
-		if err := fs.patchList(e.f, final, reg, positionLoadTrue); err != nil {
+		if err := fs.patchList(e.t, final, reg, positionLoadTrue); err != nil {
 			return e, err
 		}
 	}

internal/luacode/parser.go

@@ -205,7 +205,7 @@ func (p *parser) enterBlock(fs *funcState, isLoop bool) *blockControl {
 
 // closeFunction finalizes a [funcState] so that its [Prototype] is usable.
 //
-// Equivalent to `open_func` in upstream Lua.
+// Equivalent to `close_func` in upstream Lua.
 func (p *parser) closeFunction(fs *funcState) error {
 	p.codeReturn(fs, p.numVariablesInStack(fs), 0)
 	if err := p.leaveBlock(fs); err != nil {

internal/luacode/testdata/TailCall/input.lua

@@ -0,0 +1,7 @@
+local function factorial(n, acc)
+  acc = acc or 1
+  if n == 0 then return acc end
+  return factorial(n - 1, acc * n)
+end
+
+return factorial(3)