A low-priority enhancement request.
This is wrong D2 code:


import std.algorithm;
void main() {
    auto r = map!{ a * a }([1, 2]);
}


DMD 2.056head gives four error messages:

test.d(3): template argument expected following !
test.d(3): semicolon expected following auto declaration, not '{'
test.d(3): found '}' when expecting ';' following statement
test.d(4): found 'EOF' when expecting '}' following compound statement


It contains a common mistake:
map!{...}()

instead of:
map!q{...}()

Given how common such mistake is in my code, I'd like the compiler to recognize it and show (if possible) a single and more readable error message.