Hacked up raw NSStrings in C.

raw_strings.c

#define raw_paste(...) #__VA_ARGS__
#define raw_fix(...) raw_paste(__VA_ARGS__)
#define raw_join(x,y) x##y
#define raw_str_h(z, ...) ({char *raw_join(__raw_x, z) = raw_fix(raw_paste(__VA_ARGS__)); [[[NSString alloc] initWithBytes:raw_join(__raw_x, z) + 1 length:strlen(raw_join(__raw_x, z)) - 2 encoding:NSUTF8StringEncoding] autorelease];})
#define raw_str(...) raw_str_h(__COUNTER__, __VA_ARGS__)

/* totally doesn't work with embedded single or double quotes */

@import Foundation;
int main(int argc, char **argv) {
  NSString *a = raw_str(check out this >>> \n <<< escape sequence);
  NSLog(@"%@", a);
  return 0;
}