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CodeRay is a Ruby library for syntax highlighting.

You put your code in, and you get it back colored; Keywords, strings, floats, comments – all in different colors. And with line numbers.

Syntax Highlighting…

• makes code easier to read and maintain
• lets you detect syntax errors faster
• helps you to understand the syntax of a language
• looks nice
• is what everybody wants to have on their website
• solves all your problems and makes the girls run after you

gem install coderay

CodeRay needs Ruby 1.8.7+ or 1.9.2+. It also runs on Rubinius and JRuby.

require 'coderay'html = CodeRay.scan("puts 'Hello, world!'", :ruby).div(:line_numbers => :table)

Seehttp://coderay.rubychan.de/doc/.

• licenser (Heinz N. Gies) for ending my QBasic career, inventing the Coder project and the input/output plugin system. CodeRay would not exist without him.
• bovi (Daniel Bovensiepen) for helping me out on various occasions.

• Caleb Clausen for writingRubyLexer and lots of very interesting mail traffic
• birkenfeld (Georg Brandl) and mitsuhiku (Arnim Ronacher) for PyKleur, now Pygments. You guys rock!
• Jamis Buck for writingSyntax — I got some useful ideas from it.
• Doug Kearns and everyone else who worked on ruby.vim – it not only helped me coding CodeRay, but also gave me a wonderful target to reach for the Ruby scanner.
• everyone who uses CodeBB onhttp://www.rubyforen.de andhttp://www.python-forum.de
• iGEL, magichisoka, manveru, WoNáDo and everyone I forgot from rubyforen.de
• Dethix from ruby-mine.de
• zickzackw
• Dookie (who is no longer with us…) and Leonidas fromhttp://www.python-forum.de
• Andreas Schwarz for finding out that CaseIgnoringWordList was not case ignoring! Such things really make you write tests.
• closure for the first version of the Scheme scanner.
• Stefan Walk for the first version of the JavaScript andPHP scanners.
• Josh Goebel for another version of the JavaScript scanner, aSQL and a Diff scanner.
• Jonathan Younger for pointing out the licence confusion caused by wrongLICENSE file.
• Jeremy Hinegardner for finding the shebang-on-empty-file bug in FileType.
• Charles Oliver Nutter and Yehuda Katz for helping me benchmark CodeRay on JRuby.
• Andreas Neuhaus for pointing out a markup bug in coderay/for_redcloth.
• 0xf30fc7 for the FileType patch concerning Delphi file extensions.
• The folks at redmine.org – thank you for using and fixing CodeRay!
• Keith Pitt for hisSQL scanners
• Rob Aldred for the terminal encoder
• Trans for pointing out $DEBUG dependencies
• Flameeyes for finding that Term::ANSIColor was obsolete
• matz and all Ruby gods and gurus
• The inventors of: the computer, the internet, the true color display,HTML &CSS,VIM, Ruby, pizza, microwaves, guitars, scouting, programming, anime, manga, coke and green ice tea.

Where would we be without all those people?

• Ruby
• Chihiro (my SonyVAIO laptop); Henrietta (my old MacBook); Triella, born Rico (my new MacBook); as well as Seras and Hikari (my PCs)
• RDE,VIM andTextMate
• Subversion
• Redmine
• Firefox,Firebug,Safari, andThunderbird
• RubyGems andRake
• TortoiseSVN using Apache viaXAMPP
• RDoc (though I’m quite unsatisfied with it)
• Microsoft Windows (yes, I confess!) and MacOS X
• GNUWin32, MinGW and some other tools to make the shell under windows a bit less useless
• Term::ANSIColor
• PLEAC code examples
• Github
• Travis CI

• As you can see, CodeRay was created under heavy use offree software.
• So CodeRay is alsofree.
• If you use CodeRay to create software, think about making this softwarefree, too.
• Thanks :)