1Text::Markdown(3) User Contributed Perl Documentation Text::Markdown(3)
2
6 Text::Markdown - Convert Markdown syntax to (X)HTML
7
9 use Text::Markdown 'markdown';
10 my $html = markdown($text);
11 use Text::Markdown 'markdown';
13 my $html = markdown( $text, {
14 empty_element_suffix => '>',
15 tab_width => 2,
16 } );
17 use Text::Markdown;
19 my $m = Text::Markdown->new;
20 my $html = $m->markdown($text);
21 use Text::Markdown;
23 my $m = Text::MultiMarkdown->new(
24 empty_element_suffix => '>',
25 tab_width => 2,
26 );
27 my $html = $m->markdown( $text );
28
30 Markdown is a text-to-HTML filter; it translates an easy-to-read /
31 easy-to-write structured text format into HTML. Markdown's text format
32 is most similar to that of plain text email, and supports features such
33 as headers, *emphasis*, code blocks, blockquotes, and links.
34 Markdown's syntax is designed not as a generic markup language, but
36 specifically to serve as a front-end to (X)HTML. You can use span-level
37 HTML tags anywhere in a Markdown document, and you can use block level
38 HTML tags (like <div> and <table> as well).
39
41 This module implements the 'original' Markdown markdown syntax from:
42 http://daringfireball.net/projects/markdown/
44 Note that Text::Markdown ensures that the output always ends with one
46 newline. The fact that multiple newlines are collapsed into one makes
47 sense, because this is the behavior of HTML towards whispace. The fact
48 that there's always a newline at the end makes sense again, given that
49 the output will always be nested in a block-level element (as opposed
50 to an inline element). That block element can be a "<p>" (most often),
51 or a "<table>".
52 Markdown is not interpreted in HTML block-level elements, in order for
54 chunks of pasted HTML (e.g. JavaScript widgets, web counters) to not be
55 magically (mis)interpreted. For selective processing of Markdown in
56 some, but not other, HTML block elements, add a "markdown" attribute to
57 the block element and set its value to 1, "on" or "yes":
58 <div markdown="1" class="navbar">
60 * Home
61 * About
62 * Contact
63 <div>
64 The extra "markdown" attribute will be stripped when generating the
66 output.
67
69 Text::Markdown supports a number of options to its processor which
70 control the behaviour of the output document.
71 These options can be supplied to the constructor, or in a hash within
73 individual calls to the "markdown" method. See the SYNOPSIS for
74 examples of both styles.
75 The options for the processor are:
77 empty_element_suffix
79 This option controls the end of empty element tags:
80 '/>' for XHTML (default)
82 '>' for HTML
83 tab_width
85 Controls indent width in the generated markup. Defaults to 4.
86 trust_list_start_value
88 If true, ordered lists will use the first number as the starting
89 point for numbering. This will let you pick up where you left off
90 by writing:
91 1. foo
93 2. bar
94 some paragraph
96 3. baz
98 6. quux
99 (Note that in the above, quux will be numbered 4.)
101
103 new
104 A simple constructor, see the SYNTAX and OPTIONS sections for more
105 information.
106 markdown
108 The main function as far as the outside world is concerned. See the
109 SYNOPSIS for details on use.
110 urls
112 Returns a reference to a hash with the key being the markdown reference
113 and the value being the URL.
114 Useful for building scripts which preprocess a list of links before the
116 main content. See t/05options.t for an example of this hashref being
117 passed back into the markdown method to create links.
118
120 Markdown has been re-implemented in a number of languages, and with a
121 number of additions.
122 Those that I have found are listed below:
124 C - <http://www.pell.portland.or.us/~orc/Code/discount>
126 Discount - Original Markdown, but in C. Fastest implementation
127 available, and passes MDTest. Adds its own set of custom features.
128 python - <http://www.freewisdom.org/projects/python-markdown/>
130 Python Markdown which is mostly compatible with the original, with
131 an interesting extension API.
132 ruby (maruku) - <http://maruku.rubyforge.org/>
134 One of the nicest implementations out there. Builds a parse tree
135 internally so very flexible.
136 php - <http://michelf.com/projects/php-markdown/>
138 A direct port of Markdown.pl, also has a separately maintained
139 'extra' version, which adds a number of features that were borrowed
140 by MultiMarkdown.
141 lua - <http://www.frykholm.se/files/markdown.lua>
143 Port to lua. Simple and lightweight (as lua is).
144 haskell - <http://johnmacfarlane.net/pandoc/>
146 Pandoc is a more general library, supporting Markdown,
147 reStructuredText, LaTeX and more.
148 javascript - <http://www.attacklab.net/showdown-gui.html>
150 Direct(ish) port of Markdown.pl to JavaScript
151
153 To file bug reports or feature requests please send email to:
154 bug-Text-Markdown@rt.cpan.org
156 Please include with your report: (1) the example input; (2) the output
158 you expected; (3) the output Markdown actually produced.
159
161 See the Changes file for detailed release notes for this version.
162
164 John Gruber
165 http://daringfireball.net/
166 PHP port and other contributions by Michel Fortin
168 http://michelf.com/
169 MultiMarkdown changes by Fletcher Penney
171 http://fletcher.freeshell.org/
172 CPAN Module Text::MultiMarkdown (based on Text::Markdown by Sebastian
174 Riedel) originally by Darren Kulp (http://kulp.ch/)
175 Support for markdown="1" by Dan Dascalescu (http://dandascalescu.com)
177 This module is maintained by: Tomas Doran http://www.bobtfish.net/
179
181 Please note that this distribution is a fork of John Gruber's original
182 Markdown project, and it *is not* in any way blessed by him.
183 Whilst this code aims to be compatible with the original Markdown.pl
185 (and incorporates and passes the Markdown test suite) whilst fixing a
186 number of bugs in the original - there may be differences between the
187 behaviour of this module and Markdown.pl. If you find any differences
188 where you believe Text::Markdown behaves contrary to the Markdown spec,
189 please report them as bugs.
190 Text::Markdown *does not* extend the markdown dialect in any way from
192 that which is documented at daringfireball. If you want additional
193 features, you should look at Text::MultiMarkdown.
194
196 You can find the source code repository for Text::Markdown and
197 Text::MultiMarkdown on GitHub at
198 <http://github.com/bobtfish/text-markdown>.
199
201 Original Code Copyright (c) 2003-2004 John Gruber
202 <http://daringfireball.net/> All rights reserved.
203 MultiMarkdown changes Copyright (c) 2005-2006 Fletcher T. Penney
205 <http://fletcher.freeshell.org/> All rights reserved.
206 Text::MultiMarkdown changes Copyright (c) 2006-2009 Darren Kulp
208 <http://kulp.ch> and Tomas Doran <http://www.bobtfish.net>
209 Redistribution and use in source and binary forms, with or without
211 modification, are permitted provided that the following conditions are
212 met:
213 * Redistributions of source code must retain the above copyright
215 notice,
216 this list of conditions and the following disclaimer.
217 * Redistributions in binary form must reproduce the above copyright
219 notice, this list of conditions and the following disclaimer in the
220 documentation and/or other materials provided with the distribution.
221 * Neither the name "Markdown" nor the names of its contributors may
223 be used to endorse or promote products derived from this software
224 without specific prior written permission.
225 This software is provided by the copyright holders and contributors "as
227 is" and any express or implied warranties, including, but not limited
228 to, the implied warranties of merchantability and fitness for a
229 particular purpose are disclaimed. In no event shall the copyright
230 owner or contributors be liable for any direct, indirect, incidental,
231 special, exemplary, or consequential damages (including, but not
232 limited to, procurement of substitute goods or services; loss of use,
233 data, or profits; or business interruption) however caused and on any
234 theory of liability, whether in contract, strict liability, or tort
235 (including negligence or otherwise) arising in any way out of the use
236 of this software, even if advised of the possibility of such damage.
237perl v5.28.0 2010-03-20 Text::Markdown(3)