derelict-sdl2 automatically stripping the SDL_ prefix from names

[ProgramGamer]

Hi,

I attempted to use a combination of traits and mixins to 
automatically create aliases of names in SDL2 without the SDL_ 
prefix for convenience. However, I was only able to achieve this 
for functions in the module, and not for types nor enum values. 
How could I go about achieving the desired result? Here is the 
code I'm using in an intermediate "sdl_stripped" module:

import std.regex;
import std.array;
public import derelict.sdl2.sdl;

string StripSDLPrefix() {
     auto members = [__traits(allMembers, derelict.sdl2.internal)];
     foreach(ref member; members) {
         if (member.length > 4 && member[0..4] == "SDL_") {
             member = "alias " ~ member[4..$] ~ " = " ~ member ~ 
";\n";
         }
         else {
             member = "";
         }
     }
     return members.join();
}

mixin(StripSDLPrefix());

// I added this to print the list of generated names for 
debugging purposes.
static if (false) {
     pragma(msg, StripSDLPrefix());
}