[plt-scheme] define own escape sequences?

Paul (cc'ing Eli and plt-scheme list)-

On Jun 16, 2009, at 1:33 AM, Paul Graham wrote:

> Unfortunately this module doesn't seem to exist in v372.
>
>  Welcome to MzScheme v372 [3m], Copyright (c) 2004-2007 PLT Scheme  
> Inc.
>  require: unknown module: syntax/readerr
>
> Is there a way to do it in v372?

You need to use the old require format for the older PLT version.

   (require (lib "readerr.ss" "syntax"))

However, my attempt to test Eli's code out led to a new problem:  
regexp-try-match does not seem to be part of v372.

Still, the hint above may get you far enough to port Eli's code.  (I  
did not attempt to do so.)

-Felix Klock