Multiline string literal improvements

[Igor]

D has a very nice feature of token strings:
string a = q{
                looksLikeCode();
             };

It is useful in writing mixins and to have syntax highlighting in 
editors. Although I like it, it is not something I ever felt like 
missing in other languages. What I do always miss are these two 
options:

1. Have something like this:

string a = |q{
                  firstLine();
                  if (cond) {
                      secondLine()
                  }
               };

mean count the number of whitespace characters at the start of a 
first new line of string literal and then strip up to that many 
whitespace characters from the start of each line.

2. If we just put for example "-" instead of "|" in above example 
have that mean: replace all whitespace with a single space in 
following string literal.

I think it is clear why would these be useful but if you want me 
I can add a few examples. This would not make any breaking 
changes to the language and it should be possible to simply 
implement it wholly in the lexer.

So what do think?