[TxMt] Creating a new scope for somecmd( )

[Domenico Carbotta]

> { name = 'my.new.scope';
> begin = "trace\('";
> end = "\'\)";
> }

note that it should be before any other rule could catch pieces of  
it: when I do something like that, I create a new language where I  
first define my additions then include the base grammar.