On Thursday, 2 August 2012 at 07:29:52 UTC, Walter Bright wrote: > The lexer MUST MUST MUST be FAST FAST FAST. Or it will not be > useful. If it isn't fast, serious users will eschew it and will > cook up their own. You'll have a nice, pretty, useless toy of > std.d.lexer. If you want to throw out some target times, that would be useful.