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When CONSTANTP is supplied an &environment object from the compiler macro it can determine forms involving MACROLET to be constant, but such forms are problematic for LOAD-TIME-VALUE and its null lexical environment execution requirements.
CL-PPCRE - Portable Perl-compatible regular expressions for Common Lisp
Abstract
CL-PPCRE is a portable regular expression library for Common Lisp which has the following features:
- It is compatible with Perl (especially when used in conjunction with cl-interpol, to allow compatible parsing of regexp strings).
- It is pretty fast.
- It is portable between ANSI-compliant Common Lisp implementations.
- It is thread-safe.
- In addition to specifying regular expressions as strings like in Perl you can also use S-expressions.
- It comes with a BSD-style license so you can basically do with it whatever you want.
CL-PPCRE has been used successfully in various applications like BioBike, clutu, LoGS, CafeSpot, Eboy, or The Regex Coach.
Further documentation can be found in doc/index.html, or on
the cl-ppcre homepage.