Still completely unnecessary. The editor can display the string minus the escape characters with whatever color, highlighting etc. you like, and still keep the

Still completely unnecessary. The editor can display the string minus the escape characters with whatever color, highlighting etc. you like, and still keep the escape characters in the code as stored on disk for the compiler's benefit. Basically, if you want an editor that displays code with colors and boxes instead of delimiters, that's fine; writing one would be a practical project. It is neither necessary nor desirable to attempt to design a new language, write a new compiler, version control system and half a dozen other ancillary tools at the same time as part of the same project.