{1}%% Correctly defined arguments block{0}
{4}function{0} {7}y{0} {6}={0} {7}foo{0} {6}({7}x{6}){0}
{1}% Some comment here{0}
{1}% And, maybe, here{0}

{4}arguments{0}
    {7}x{0} {6}({3}1{6},{3}2{6}){0} {6}{{7}mustBeReal{6}({7}x{6})}{0}
{4}end{0}

{7}y{0} {6}={0} {7}x{6}*{3}2{6};{0}
{7}arguments{0} {6}={0} {3}1{6};{0}
{7}y{0} {6}={0} {7}y{0} {6}+{0} {7}arguments{6};{0}
{4}end{0}

{1}%% No arguments block, "arguments" is used {0}
{1}%  as a variable name (identifier){0}
{1}% Prevent arguments from folding with an identifier{0}
{4}function{0} {7}y{0} {6}={0} {7}foo{0} {6}({7}x{6}){0}
{1}% Some comment here{0}
{7}x{0} {6}={0} {7}x{0} {6}+{0} {3}1{6};{0}
{7}arguments{0} {6}={0} {3}10{6};{0}
{7}y{0} {6}={0} {7}x{0} {6}+{0} {7}arguments{6};{0}
{4}end{0}

{1}% Prevent arguments from folding with a number{0}
{4}function{0} {7}y{0} {6}={0} {7}foo{0} {6}({7}x{6}){0}
{3}4{0}
{7}arguments{0} {6}={0} {3}10{6};{0}
{7}y{0} {6}={0} {7}x{0} {6}+{0} {7}arguments{6};{0}
{4}end{0}

{1}% With a double quote string{0}
{4}function{0} {7}y{0} {6}={0} {7}foo{0} {6}({7}x{6}){0}
{8}"test"{0}
{7}arguments{0} {6}={0} {3}10{6};{0}
{7}y{0} {6}={0} {7}x{0} {6}+{0} {7}arguments{6};{0}
{4}end{0}

{1}% With a string{0}
{4}function{0} {7}y{0} {6}={0} {7}foo{0} {6}({7}x{6}){0}
{5}'test'{0}
{7}arguments{0} {6}={0} {3}10{6};{0}
{7}y{0} {6}={0} {7}x{0} {6}+{0} {7}arguments{6};{0}
{4}end{0}

{1}% With a keyword{0}
{4}function{0} {7}y{0} {6}={0} {7}foo{0} {6}({7}x{6}){0}
{4}if{0} {7}x{0} {6}=={0} {3}0{6};{0}
    {4}return{0} {3}0{6};{0}
{4}end{0}
{7}arguments{0} {6}={0} {3}10{6};{0}
{7}y{0} {6}={0} {7}x{0} {6}+{0} {7}arguments{6};{0}
{4}end{0}

{1}% With an operator (illegal syntax){0}
{4}function{0} {7}y{0} {6}={0} {7}foo{0} {6}({7}x{6}){0}
{6}*{0}
{7}arguments{0} {6}={0} {3}10{6};{0}
{7}y{0} {6}={0} {7}x{0} {6}+{0} {7}arguments{6};{0}
{4}end{0}

{1}% Arguments block is illegal in nested functions,{0}
{1}% but lexer should process it anyway{0}
{4}function{0} {7}y{0} {6}={0} {7}foo{0} {6}({7}x{6}){0}
{4}arguments{0}
    {7}x{0} {6}({3}1{6},{3}2{6}){0} {6}{{7}mustBeReal{6}({7}x{6})}{0}
{4}end{0}

    {4}function{0} {7}y{0} {6}={0} {7}foo{0} {6}({7}x{6}){0}
    {4}arguments{0}
        {7}x{0} {6}({3}1{6},{3}2{6}){0} {6}{{7}mustBeReal{6}({7}x{6})}{0}
    {4}end{0}
    {7}arguments{0} {6}={0} {3}5{6};{0}
    {7}y{0} {6}={0} {7}arguments{0} {6}+{0} {7}x{6};{0}
    {4}end{0}

{1}% Use as a variable, just in case{0}
{7}arguments{0} {6}={0} {3}10{6};{0}
{4}end{0}

{1}% Erroneous use of arguments block{0}
{4}function{0} {7}y{0} {6}={0} {7}foo{6}({7}x{6}){0}
{1}% Some comment{0}
{7}x{0} {6}={0} {7}x{0} {6}+{0} {3}1{6};{0}
{7}arguments{0}
    {7}x{0}
{4}end{0}
{7}y{0} {6}={0} {7}x{6};{0}
{4}end