Implementation of string-literal as template parameter

["Piotr Rak" <piotr dot rak at gmail dot com>]

Hi,

Recently i have posted an idea of new language feature to
comp.lang.c++.moderated.
That is "String literal as template parameter?"  form 12.04.2008,
if anyone is interested to see whole thread.
The idea is to allow string-literals as template argument, and make
them equivalent to variadic character pack 'char...'.

For example:

template <char... Chars_>
class Foo;

Foo<"abc">
would be equivalent to
Foo<'a', 'b', 'c'>

I am interested in writing proof of concept implementation.
Since i dont have expirience with g++ codebase, I wanted to ask:

1) Is it expected to be hard to implement? (which I rather dont expect
to be, but better ask :-)
2) Any hints, how/where should I start?

Thanks in advance for any feedback.

Piotr Rak