Flex

Flex is a tool for generating programs that recognize lexical patterns in text. There are many applications for Flex, including writing compilers in conjunction with GNU Bison. Flex is a free implementation of the well known Lex program. It features a Lex compatibility mode, and also provides several new features such as exclusive start conditions.

Last updated 28 Jul, 2009


User level: Intermediate

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License(s) :

BSD_AdClause

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Related Projects

Bison, CPG, WordNet, dbacl, dparser

Versions

2.5.33

2.5.33 devel released 2006-02-21

User Community and Support

User manual available in HTML, Info, ASCII, dvi, PostScript, and TeXinfo formats from http://flex.sourceforge.net/manual/

General Resources
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Developer Resources
Bug Tracking Resources
 

Please send comments on these web pages to bug-directory@fsf.org, send other questions to info@fsf.org.

Copyright © 2000 - 2009 Free Software Foundation, Inc., 51 Franklin Street, 5th Floor, Boston, MA 02110-1301, USA

The copyright licensing notice below applies to this text. Any software described in this text has its own copyright notice and license, which can usually be found in the distribution itself.

Permission is granted to copy, distribute, and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, with no Front-Cover Texts, and with no Back-Cover Texts.