• Synopsis
• History
• Download
• Related Links

Synopsis

This is a variant of the flex fast lexical scanner.

History

Flex was written in the early 1990s by Verne Paxson.

Originally written in K&R C, I have modified it to conform to ANSI C, and made other improvements, but kept it compatible with Paxson's 2.5.4 release (as well as POSIX lex). See the NEWS file for details.

Download

• The source (ftp)
• The source (http)

Related Links

There is of course another variation, which I've not found to be compatible with either flex 2.5.4 or POSIX lex. More specifically:

• files written for POSIX lex using %option (to increase table sizes in POSIX lex) do not work.
• the flex -P option is broken in the other variant. I use this feature in vile.
• the program does not port to non-Unix platforms (commenting on its use of m4).

However—keeping in mind that it is more well-known, this version by default installs as reflex. I have some ideas for extended relocalization (hence the choice of name), and needed an up-to-date version of flex to use as a basis.