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<!DOCTYPE html> |
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<html lang="en" class="formal-specification status-work-in-progress"> |
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<head> |
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<title>Selectors Serialization Format for Testing (SSFT) Specification</title> |
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<link rel="stylesheet" href="http://suika.fam.cx/www/style/html/spec"> |
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<link rel="license" href="http://suika.fam.cx/c/gnu/fdl"> |
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</head> |
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<body class="has-abstract"> |
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|
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<div class="header"> |
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<h1>Selectors Serialization Format for Testing (<abbr>SSFT</abbr>) |
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Specification</h1> |
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<h2>Working Draft <time datetime=2007-10-07>7 October 2007</time></h2> |
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|
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<dl class="versions-uri"> |
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<dt>This Version</dt> |
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<dd><code class="URI"><<a href="http://suika.fam.cx/www/markup/selectors/ssft/ssft" |
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>http://suika.fam.cx/www/markup/selectors/ssft/ssft</a>></code></dd> |
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<dt>Latest Version</dt> |
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<dd><code class="URI"><<a href="http://suika.fam.cx/www/markup/selectors/ssft/ssft" |
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>http://suika.fam.cx/www/markup/selectors/ssft/ssft</a>></code></dd> |
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<!-- |
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<dt>Latest Working Draft</dt> |
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--> |
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<!-- <dt>Previous Version</dt> --> |
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<dt>Version History</dt> |
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<dd><code class=URI><<a href="http://suika.fam.cx/gate/cvs/markup/selectors/ssft/ssft.en.html">http://suika.fam.cx/gate/cvs/markup/selectors/ssft/ssft.en.html</a>></code></dd> |
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</dl> |
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<dl class="authors" id="author"> |
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<dt>Author</dt> |
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<dd><a href="http://suika.fam.cx/~wakaba/who?" rel="author" |
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lang=ja>Wakaba</a> |
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<code class="mail"><<a href="mailto:w@suika.fam.cx" rel="author" |
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>w@suika.fam.cx</a>></code></dd> |
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</dl> |
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|
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<p class="copyright" lang="en">© <time>2007</time> <a |
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href="http://suika.fam.cx/~wakaba/who?" rel="author">Wakaba</a>. |
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Permission is granted to copy, distribute and/or modify this document |
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under the terms of the <a rel="license" |
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href="http://www.gnu.org/copyleft/fdl.html">GNU Free Documentation License</a>, |
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Version 1.2 |
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or any later version published by the <a |
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href="http://www.fsf.org/">Free Software Foundation</a>; |
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with no Invariant Sections, no Front$B!>(BCover Texts, and no Back$B!>(BCover |
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Texts. A copy of the license is |
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available at <code class="URI"><<a |
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href="http://www.gnu.org/copyleft/fdl.html" |
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rel="license">http://www.gnu.org/copyleft/fdl.html</a>></code>.</p> |
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</div> |
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|
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<div id="abstract" class="section"> |
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<h2>Abstract</h2> |
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|
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<div class="ed issue">...</div> |
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|
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</div> |
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|
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<div id="status" class="section"> |
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<h2>Status of This Document</h2> |
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|
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<p class=section-info><em>This section describes the status of this document |
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at the time of its publication. Other documents |
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might supersede this document.</em></p> |
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|
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<p>This document is a working draft, produced as part |
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of the <a href="http://suika.fam.cx/www/manakai-core/doc/web/">manakai</a> |
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project. It might be updated, replaced, or obsoleted by |
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other documents at any time. It is inappropriate to |
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cite this document as other than <q>work in progress</q>.</p> |
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|
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<p>Comments on this document are welcome and |
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may be sent to the <a href="#author">author</a>.</p> |
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|
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<p>Translations of thie document might be available. |
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The English version of the document is the only |
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normative version.</p> |
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</div> |
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|
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<div id="introduction" class="section"> |
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<h2>Introduction</h2> |
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|
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<p class=section-info>This section is <em>non$B!>(Bnormative</em>.</p> |
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|
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<p>Selectors |
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<cite class="bibref normative">[<a href="#ref-SELECTORS">SELECTORS</a>]</cite> |
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are patterns that match against elements |
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in a tree structure and are used in Web technologies, including |
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<a href="http://www.w3.org/TR/CSS21"><abbr title="Cascading Style Sheets">CSS</abbr></a> |
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<cite class="bibref informative">[<a href="#ref-CSS">CSS</a>]</cite>, |
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<a href="http://whatwg.org/html5"><abbr title="Hypertext Markup Language">HTML</abbr>5</a> |
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<cite class="bibref informative">[<a href="#ref-HTML5">HTML5</a>]</cite>, |
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<a href="http://www.mozilla.org/projects/xbl/xbl2.html"><abbr title="XML Binding Language">XBL</abbr>2</a> |
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<cite class="bibref informative">[<a href="#ref-XBL2">XBL2</a>]</cite>, and |
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<a href="http://dev.w3.org/cvsweb/~checkout~/2006/webapi/selectors-api/Overview.html?rev=1.28&content-type=text/html;%20charset=utf-8">Selectors |
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<abbr>API</abbr></a> |
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<cite class="bibref informative">[<a href="#ref-SAPI">SAPI</a>]</cite>.</p> |
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|
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<div class="issue ed">...</div> |
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|
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<p><a href="http://dev.w3.org/cvsweb/csswg/cssom/Overview.html">The |
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<abbr title="Cascading Style Sheets Object Model">CSSOM</abbr> |
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specification</a> |
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<cite class="bibref informative">[<a href="#ref-CSSOM">CSSOM</a>]</cite> |
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is trying to define an algorithm to |
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<a href="http://dev.w3.org/cvsweb/~checkout~/csswg/cssom/Overview.html?rev=1.55&content-type=text/html;%20charset=utf-8#serializing0">serialize |
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a group of selectors</a> for the purpose of <code>selectorText</code> |
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attribute. However, the algorithm is incomplete |
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<time datetime=2007-09-25>at the time of the writing</time>. |
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Note that current Web browser implementations |
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of the <code>selectorText</code> attribute are consistently broken |
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in not escaping unsafe identifiers.</p> |
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|
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</div> |
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|
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<div class="section" id="terminology"> |
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<h2>Terminology</h2> |
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|
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<p>The key words <q><em class="rfc2119">MUST</em></q>, |
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<q><em class="rfc2119">MUST NOT</em></q>, |
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<q><em class="rfc2119">SHOULD</em></q>, |
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<q><em class="rfc2119">SHOULD NOT</em></q>, and |
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<q><em class=rfc2119>MAY</em></q> in this |
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document are to be interpreted as described in |
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<a href="urn:ietf:rfc:2119"><abbr title="Request for Comments">RFC</abbr> |
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2119</a> |
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<cite class="bibref normative">[<a href="#ref-KEYWORDS">KEYWORDS</a>]</cite>.</p> |
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|
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<!-- Strictly speaking the paragraph below is not part of terminology. --> |
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<p>All examples and notes in this specification are non$B!>(Bnormative, |
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as are all sections explicitly marked non$B!>(Bnormative. Everything |
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else in this specification is normative.</p> |
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|
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<p>For the purpose of this specification, pseudo$B!>(Belements are also |
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referred to as <dfn title="simple selector" id=simple-selector>simple |
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selectors</dfn> and are considered as part of the last sequence of |
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simple selector in a selector.</p> |
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</div> |
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|
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<div class="section" id="serializing"> |
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<h2>Serializing Groups of Selectors</h2> |
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|
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<div class="issue ed"> |
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<p><a href="http://suika.fam.cx/gate/cvs/*checkout*/markup/html/whatpm/Whatpm/CSS/SelectorsSerializer.pm">See the reference implementation</a> |
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for now.</p> |
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</div> |
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|
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<p><dfn id=newline title=newline>Newline</dfn> is |
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<code class=char>U+000A</code> <code class=charname>LINE FEED</code> |
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<span class=ed>or U+000D U+000A or U+000A ??</span>.</p> |
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|
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<!-- TODO: link terms to Selectors --> |
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|
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<p>To |
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<dfn id=algorithm-serialize-a-group-of-selectors title="serialize a group of selectors">serialize |
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a group of selectors (<dfn id=var-gs><var>gs</var></dfn>)</dfn>:</p> |
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<ol> |
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<li>Let <dfn id=var-result><var>result</var></dfn> an empty string.</li> |
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<li>For each selector (<dfn id=var-selector><var>selector</var></dfn>) in |
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<var>gs</var>: |
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<ol> |
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<li>If <var>selector</var> is <em>not</em> the first selector |
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in the group of selectors, then append a <code class=char>U+002C</code> |
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<code class=charname>COMMA</code> (<code class=char>,</code>) followed by a |
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<a href="#newline">newline</a> to <var>result</var>.</li> |
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<li>Append four <code class=char>U+0020</code> |
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<code class=charname>SPACE</code> characters to <var>result</var>.</li> |
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<li>Process each sequence of simple selectors or |
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combinator in <var>selector</var> by following algorithm: |
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<dl class=switch> |
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<dt>If it is a sequence of simle selector |
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(<dfn id=var-sss><var>sss</var></dfn>)</dt> |
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<dd class=ed>@@</dd> |
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<dt>If it is a combinator (<dfn id=var-c><var>c</var></dfn>)</dt> |
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<dd> |
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<ol> |
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<li>Append two <code class=char>U+0020</code> |
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<code class=charname>SPACE</code> characters to <var>result</var>.</li> |
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<li> |
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<dl class=switch> |
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<dt>If <var>c</var> is descendant combinator (white space)</dt> |
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<dd>Append a <code class=char>U+0020</code> |
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<code class=charname>SPACE</code> character to |
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<var>result</var>.</dd> |
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<dt>If <var>c</var> is child combinator |
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(<code class=char>></code>)</dt> |
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<dd>Append a <code class=char>U+003E</code> |
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<code class=charname>GREATER-THAN SIGN</code> |
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(<code class=char>></code>) character to <var>result</var>.</dd> |
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<dt>If <var>c</var> is adjacent sibling combinator |
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(<code class=char>+</code>)</dt> |
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<dd>Append a <code class=char>U+002B</code> |
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<code class=charname>PLUS SIGN</code> (<code class=char>+</code>) |
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character to <var>result</var>.</dd> |
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<dt>If <var>c</var> is general sibling combinator |
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(<code class=char>~</code>)</dt> |
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<dd>Append a <code class=char>U+007E</code> |
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<code class=charname>TILDE</code> (<code class=char>~</code>) |
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character to <var>result</var>.</dd> |
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</dl> |
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</li> |
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<li>Append a <code class=char>U+0020</code> |
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<code class=charname>SPACE</code> character to |
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<var>result</var>.</li> |
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</ol> |
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</dd> |
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</dl> |
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</ol> |
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</li> |
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<li>Then, <var>result</var> is the |
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<abbr title="Selectors Serialization Format for Testing">SFFT</abbr> |
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representation of the group of selectors.</li> |
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</ol> |
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|
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<p>To |
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<dfn id=algorithm-serialize-a-simple-selector title="serialize a simple selector">serialize |
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a simple selector (<dfn><var id=var-ss>ss</var></dfn>)</dfn>:</p> |
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<dl class=switch> |
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<dt>If <var>ss</var> is a type or universal selector</dt> |
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<dd> |
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<ol> |
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<li> |
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<dl class=switch> |
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<dt>If a namespace URI is specified (via namespace prefix, or |
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by omitting namespace prefix where a default namespace is specified)</dt> |
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<dd class="ed">@@</dd> |
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<dt>If the null namespace is specified (by zero$B!>(Blength namespace |
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prefix)</dt> |
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<dd>Append a <code class=char>U+007C</code> |
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<code class=charname>VERTICAL BAR</code> (<code class=char>|</code>) |
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character to <var>result</var>.</dd> |
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<dt>If no namespace is specified (by namespace prefix <code>*</code>, |
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or by omitting namespace prefix where no default namespace is |
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specified)</dt> |
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<dd>Append a <code class=char>U+002A</code> |
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<code class=charname>ASTERISK</code> (<code class=char>*</code>) |
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character, followed by a <code class=char>U+007C</code> |
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<code class=charname>VERTICAL BAR</code> (<code class=char>|</code>) |
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character, to <var>result</var>.</dd> |
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</dl> |
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</li> |
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<li>If <var>ss</var> is a type selector, append the |
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<span class=ed>@@ normalized</span> local name to <var>result</var>.</li> |
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<li>If <var>ss</var> is a universal selector, append |
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a <code class=char>U+002A</code> <code class=charname>ASTERISK</code> |
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(<code class=char>*</code>) character to <var>result</var>.</li> |
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</ol> |
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</dd> |
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<dt>If <var>ss</var> is an attribute selector</dt> |
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<dd class=ed>@@</dd> |
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<dt>If <var>ss</var> is a class selector</dt> |
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<dd>Append a <code class=char>U+002E</code> <code class=charname>FULL |
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STOP</code> (<code class=char>.</code>) character, followed |
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by <span class=ed>@@ normalized</span> class name, |
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<var>result</var>.</dd> |
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<dt>If <var>ss</var> is an <abbr>ID</abbr> selector</dt> |
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<dd>Append a <code class=char>U+0023</code> <code class=charname>NUMBER |
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SIGN</code> (<code class=char>#</code>) character, followed |
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by <span class=ed>@@ normalized</span> <abbr>ID</abbr>, |
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to <var>result</var>.</dd> |
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<dt>If <var>ss</var> is a pseudo$B!>(Bclass selector</dt> |
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<dd> |
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<ol> |
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<li>Append a <code class=char>U+003A</code> |
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<code class=charname>COLON</code> (<code class=char>:</code>) character |
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to <var>result</var>.</li> |
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<li>Append <span class=ed>@@ normalized</span> |
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pseudo$B!>(Bclass name to <var>result</var>.</li> |
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<li>Append any arguments as following: |
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<dl class=switch> |
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<dt>If pseudo$B!>(Bclass name is <code>lang</code></dt> |
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<dd> |
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<ol> |
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<li>Append a <code class=char>U+0028</code> <code class=charname>LEFT |
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PARENTHESIS</code> (<code class=char>(</code>) character |
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to <var>result</var>.</li> |
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<li>Append <span class=ed>@@ normalized</span> |
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language tag (the argument) to <var>result</var>.</li> |
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<li>Append a <code class=char>U+0029</code> |
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<code class=charname>RIGHT PARENTHESIS</code> |
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(<code class=char>)</code>) character |
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to <var>result</var>.</li> |
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</ol> |
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</dd> |
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<dt>If pseudo$B!>(Bclass name is <code>-manakai-contains</code></dt> |
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<dd> |
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<ol> |
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<li>Append a <code class=char>U+0028</code> <code class=charname>LEFT |
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PARENTHESIS</code> (<code class=char>(</code>) character |
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to <var>result</var>.</li> |
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<li>Append <span class=ed>@@ normalized</span> |
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string (the argument) to <var>result</var>.</li> |
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<li>Append a <code class=char>U+0029</code> |
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<code class=charname>RIGHT PARENTHESIS</code> |
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(<code class=char>)</code>) character |
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to <var>result</var>.</li> |
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</ol> |
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</dd> |
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<dt>If pseudo$B!>(Bclass name is <code>nth-child</code>, |
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<code>nth-last-child</code>, <code>nth-of-type</code>, or |
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<code>nth-last-of-type</code></dt> |
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<dd> |
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<ol> |
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<li>Append a <code class=char>U+0028</code> <code class=charname>LEFT |
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PARENTHESIS</code> (<code class=char>(</code>) character |
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to <var>result</var>.</li> |
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<li>Append <span class=ed>@@ normalized</span> |
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integer <var>a</var> to <var>result</var>. |
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If the argument is a keyword <code>odd</code> or <code>even</code>, |
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<var>a</var> is <code>2</code>. If <var>a</var> and |
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<code>n</code> is omitted, <var>a</var> is assumed as |
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<code>0</code>. Otherwise, if <var>a</var> is omitted, |
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it is assumed as <code>1</code> (or <code>-1</code>, |
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if there is a <code class=char>U+002D</code> |
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<code class=charname>HYPHEN-MINUS</code> (<code class=char>-</code>) |
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character).</li> |
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<li>Append a <code class=char>U+006E</code> |
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<code class=charname>LATIN SMALL LETTER N</code> |
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(<code class=char>n</code>) character to <var>result</var>.</li> |
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<li>Append <span class=ed>@@ normalized</span> |
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integer <var>b</var> to <var>result</var>. |
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It <em class=rfc2119>MUST</em> be preceded by a sign, |
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either <code class=char>U+002B</code> <code class=charname>PLUS |
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SIGN</code> (<code class=char>+</code>) or |
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<code class=char>U+002D</code> |
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<code class=charname>HYPHEN-MINUS</code> (<code class=char>-</code>) |
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character. If the argument is a keyword <code>odd</code>, |
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<var>b</var> is <code>1</code>. If the argument |
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is a keyword <code>even</code>, <var>b</var> is |
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<code>0</code>. If <var>b</var> is omitted, it is assumed as |
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<code>0</code>. The sign of <code>0</code> |
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<em class=rfc2119>MUST</em> be <code class=char>U+002B</code> |
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<code class=charname>PLUS SIGN</code> |
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(<code class=char>+</code>).</li> |
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<li>Append a <code class=char>U+0029</code> |
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<code class=charname>RIGHT PARENTHESIS</code> |
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(<code class=char>)</code>) character |
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to <var>result</var>.</li> |
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</ol> |
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</dd> |
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<dt>If pseudo$B!>(Bclass name is <code>not</code></dt> |
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<dd class=ed>@@</dd> |
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</dl> |
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</li> |
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</ol> |
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</dd> |
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<dt>If <var>ss</var> is a pseudo$B!>(Belement</dt> |
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<dd> |
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<ol> |
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<li>Append two <code class=char>U+003A</code> |
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<code class=charname>COLON</code> characters (<code>::</code>) |
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to <var>result</var>.</li> |
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<li>Append <span class=ed>@@ normalized</span> |
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pseudo$B!>(Belement name to <var>result</var>.</li> |
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<!-- For future version: append "(", arguments, ")", if any. --> |
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</ol> |
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</dd> |
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</dl> |
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|
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</div> |
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|
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<div class="section" id="parsing"> |
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<h2>Parsing |
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<abbr title="Selectors Serialization Format for Testing">SFFT</abbr> |
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Groups of Selectors</h2> |
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|
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<p>Since <a href="#serializing">the serializing algorithm</a> is |
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so designed that it always output a valid |
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<a href="http://www.w3.org/TR/css3-selectors/#grouping">group of |
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selectors</a>, no special parser for |
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<abbr title="Selectors Serialization Format for Testing">SFFT</abbr> |
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is necessary. Any conforming |
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<a href="http://www.w3.org/TR/css3-selectors/#grouping">group of |
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selectors</a> parser <em class=rfc2119>MAY</em> be used |
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to parse <abbr title="Selectors Serialization Format for Testing">SFFT</abbr> |
| 376 |
groups of selectors.</p> |
| 377 |
</div> |
| 378 |
|
| 379 |
<div class="section" id="examples"> |
| 380 |
<h2>Examples</h2> |
| 381 |
|
| 382 |
<p class=section-info>This section is <em>non$B!>(Bnormative</em>.</p> |
| 383 |
|
| 384 |
<div class="ed issue"> |
| 385 |
<p><a href="http://suika.fam.cx/gate/2007/css/parser-interface">Try demo</a>, |
| 386 |
by choosing <q>Selectors</q> radio button.</p> |
| 387 |
|
| 388 |
<div class="example figure block"> |
| 389 |
<div class="caption">...</div> |
| 390 |
|
| 391 |
<pre><code>...</code></pre> |
| 392 |
</div> |
| 393 |
|
| 394 |
</div> |
| 395 |
|
| 396 |
</div> |
| 397 |
|
| 398 |
<div id="references" class="section reference"> |
| 399 |
<h2>References</h2> |
| 400 |
|
| 401 |
<div id="normative-references" class="section normative reference"> |
| 402 |
<h3>Normative References</h3> |
| 403 |
|
| 404 |
<dl> |
| 405 |
<dt id="ref-KEYWORDS">KEYWORDS</dt> |
| 406 |
<dd><cite><a href="urn:ietf:rfc:2119">Key words for use in |
| 407 |
<abbr>RFCs</abbr> to Indicate Requirement Levels</a></cite>, |
| 408 |
<abbr title="Internet Engineering Task Force">IETF</abbr> |
| 409 |
<a href="urn:ietf:bcp:14"><abbr title="Best Current Practice">BCP</abbr> |
| 410 |
14</a>, <abbr title="Request for Comments">RFC</abbr> 2119, |
| 411 |
<time datetime=1997-03>March 1997</time>. |
| 412 |
This version of the specification is referenced</dd> |
| 413 |
<dt id=ref-SELECTORS>SELECTORS</dt> |
| 414 |
<dd><a href="http://www.w3.org/TR/2005/WD-css3-selectors-20051215"><cite>Selectors</cite></a>, |
| 415 |
<abbr title="World Wide Web Consortium">W3C</abbr> Working Draft, |
| 416 |
<time datetime=2005-12-15>15 December 2005</time>. Work in progress. |
| 417 |
<a href="http://www.w3.org/TR/css3-selectors">The latest version</a> |
| 418 |
of the specification is referenced.</dd> |
| 419 |
</dl> |
| 420 |
</div> |
| 421 |
|
| 422 |
<div id="informative-references" class="section informative reference"> |
| 423 |
<h3>Non$B!>(Bnormative References</h3> |
| 424 |
|
| 425 |
<dl> |
| 426 |
<dt id=ref-CSS>CSS</dt> |
| 427 |
<dd><cite><a href="http://www.w3.org/TR/2007/CR-CSS21-20070719">Cascading |
| 428 |
Style Sheets Level 2 Revision 1 (<abbr>CSS</abbr> 2.1) |
| 429 |
Specification</a></cite>, |
| 430 |
<abbr title="World Wide Web Consortium">W3C</abbr> Candidate |
| 431 |
Recommendation, <time datetime=2007-07-19>19 July 2007</time>. |
| 432 |
Work in progress. The latest version of the specification is |
| 433 |
available at |
| 434 |
<code class=URI><<a href="http://www.w3.org/TR/CSS21">http://www.w3.org/TR/CSS21</a>></code>.</dd> |
| 435 |
<dt id=ref-CSSOM>CSSOM</dt> |
| 436 |
<dd><cite><a href="http://dev.w3.org/cvsweb/~checkout~/csswg/cssom/Overview.html?rev=1.55&content-type=text/html;%20charset=utf-8">Cascading |
| 437 |
Style Sheets Object Model (<abbr>CSSOM</abbr>)</a></cite>, |
| 438 |
<abbr title="World Wide Web Consortium">W3C</abbr> Editor's Draft, |
| 439 |
<time datetime=2007-06-18>18 June 2007</time>. Work in progress. |
| 440 |
The latest Editor's Draft of the specification is available at |
| 441 |
<code class=URI><<a href="http://dev.w3.org/csswg/cssom/Overview.html">http://dev.w3.org/csswg/cssom/Overview.html</a>></code>.</dd> |
| 442 |
<dt id=ref-HTML5>HTML5</dt> |
| 443 |
<dd><cite><a href="http://whatwg.org/html5"><abbr>HTML</abbr> 5</a></cite>, |
| 444 |
<abbr title="Web Hypertext Application Technology Working Group">WHATWG</abbr> |
| 445 |
Working Draft. Work in progress.</dd> |
| 446 |
<dt id=ref-SAPI>SAPI</dt> |
| 447 |
<dd><cite><a href="http://dev.w3.org/cvsweb/~checkout~/2006/webapi/selectors-api/Overview.html?rev=1.28&content-type=text/html;%20charset=utf-8">Selectors <abbr>API</abbr></a></cite>, |
| 448 |
<abbr title="World Wide Web Consortium">W3C</abbr> Editor's Draft, |
| 449 |
<time datetime=2007-08-29>29 August 2007</time>. Work in progress. |
| 450 |
The latest Editor's Draft of the specification is available at |
| 451 |
<code class=URI><<a href="http://dev.w3.org/2006/webapi/selectors-api/Overview.html">http://dev.w3.org/2006/webapi/selectors-api/Overview.html</a>></code>. |
| 452 |
The latest published version of the specification is available at |
| 453 |
<code class=URI><<a href="http://www.w3.org/TR/selectors-api/">http://www.w3.org/TR/selectors-api/</a>></code>.</dd> |
| 454 |
<dt id=XBL2>XBL2</dt> |
| 455 |
<dd><cite><a href="http://www.mozilla.org/projects/xbl/xbl2.html"><abbr>XBL</abbr> |
| 456 |
2.0</a></cite>, Mozilla.org, <time datetime=2007-03-15>15 Mar 2007</time>. |
| 457 |
Work in progress. The latest |
| 458 |
<abbr title="World Wide Web Consortium">W3C</abbr>$B!>(Bpublished |
| 459 |
version of the specification is available at |
| 460 |
<code class=URI><<a href="http://www.w3.org/TR/xbl/">http://www.w3.org/TR/xbl/</a>></code>.</dd> |
| 461 |
</dl> |
| 462 |
</div> |
| 463 |
|
| 464 |
</div> |
| 465 |
|
| 466 |
</body> |
| 467 |
</html> |
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