The problem is that when I mount the Snippet printf ("$ 1 \ n", $ 0); generates conflict with the .json language used to create the snippet, since at the time I use the parentheses for the function and \ n it conflicts with the .json and I can not put the \ n at the end of the string that the function receives and or "I do not know if it's possible to do what I want, but I'd really like to make it look like the Atom snippets."
