Need a Faster Compressor

[Walter Bright via Digitalmars-d]

On 5/22/2016 2:57 AM, Era Scarecrow wrote:
>  Question Walter (or Andrei): Would it be terrible to have lower characters as
> part of the identifier string? I'm referring to characters under 32 (control
> characters, especially the \r, \n and \t).

Currently there's a bug in id_compress() where it doesn't take into account 
UTF-8 sequences, as a subset of them are allowed as identifiers. I rue the day I 
allowed that in D, but we're kinda stuck with it.

I kinda hate disallowing control characters, because then the compressor gets a 
bit specific.