ftp.nice.ch/pub/next/unix/developer/flex.2.5.2.README

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flex - GNU's fast lexical analyzer generator

   `flex' is a tool for generating "scanners": programs which
recognized lexical patterns in text.  `flex' reads the given input
files, or its standard input if no file names are given, for a
description of a scanner to generate.  The description is in the form
of pairs of regular expressions and C code, called "rules". `flex'
generates as output a C source file, `lex.yy.c', which defines a
routine `yylex()'.  This file is compiled and linked with the `-lfl'
library to produce an executable.  When the executable is run, it
analyzes its input for occurrences of the regular expressions.
Whenever it finds one, it executes the corresponding C code.

These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.