sc.ini and delegates

[Eugene Yang]

Hello all,

If I want to set custom imports and library search paths for a 
specific project, how do I specify those paths in the sc.ini 
file?  Setting the DFLAGS environment variable seems to override 
the default settings; is there a way I can append to the default 
DFLAGS variable?

Also, if I try to compile this code

import std.stdio, std.algorithm;

char toInverse(in char input)
{
        if(input == 'a')
                return 'b';
        return 'c';
}

void main(string[] args)
{
        string line = readln();
        auto result = line.map!(toInverse);
        writeln(result);
}

I get an error saying that toInverse is not callable with the 
argument type dchar.  Why is line, which should be 
immutable(char)[] being casted as a dchar array?

Thanks in advance,
Eugene Yang