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[css2] Sync'ed with errata.
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‎css2/changes.src‎

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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN">
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<html lang="en">
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<!-- $Id: changes.src,v 2.121 2010-09-08 16:26:53 bbos Exp $ -->
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<!-- $Id: changes.src,v 2.122 2010-09-29 15:47:45 bbos Exp $ -->
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<HEAD>
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<TITLE>Changes</TITLE>
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</HEAD>
@@ -4219,6 +4219,68 @@ definition from &ldquo;<del>[^\0-\177]</del>&rdquo; to
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<ins>[^\0-\237]</ins>&rdquo;. (When CSS was first written, Unicode
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didn't have code points U+0080 to U+009F, i.e., \200-\237 in octal.)
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<!--========================== issue 129 ==========================-->
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<h3 id="t.4.1.1a"><a
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href="/TR/2009/CR-CSS2-20090908/syndata.html#tokenization">
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Section&nbsp;4.1.1 Tokenization</a></h3>
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<p><span class=date>[2010-09-29]</span> The tokenizer has been
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modified so that it can be implemented as a state machine without
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back-up (e.g., with Lex). This changes the meaning of an input of the
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form &ldquo;url(&hellip;(&hellip;)&hellip;)&rdquo;, i.e., input that
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starts like a URI token but then contains a parenthesis (which is not
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allowed in a URI token). Previously, such input was re-parsed to yield
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a FUNCTION token followed by other things; now it yields a BAD_URI
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token. Given that CSS has never used a FUNCTION token of the form
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&ldquo;url(&rdquo; this should not affect any existing CSS style
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sheets.
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<p>A non-normative section has been added to appendix G with an
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explanation of how to make a tokenizer without back-up.
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<!--========================== issue 139 ==========================-->
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<h3 id="t.4.1.1b"><a
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href="/TR/2009/CR-CSS2-20090908/syndata.html#tokenization">
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Section&nbsp;4.1.1 Tokenization</a></h3>
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<p><span class=date>[2010-09-29]</span> The definition of the URI
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token was ambiguous: it allowed a backslash to be either parsed on its
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own or as part of an escape. A backslash in a URI token must always be
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interpreted as part of an escape.
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<!--========================== issue 140 ==========================-->
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<h3 id="t.4.1.1c"><a
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href="/TR/2009/CR-CSS2-20090908/syndata.html#tokenization">
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Section&nbsp;4.1.1 Tokenization</a></h3>
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<p><span class=date>[2010-09-29]</span> Error handling for illegal
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tokens (braces, at-keywords, and SGML comment tokens) inside
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parenthesized expressions was not well defined. Change the production
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for &ldquo;any&rdquo; as follows
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<blockquote>
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<pre>
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any : [ IDENT | NUMBER | PERCENTAGE | DIMENSION | STRING
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| DELIM | URI | HASH | UNICODE-RANGE | INCLUDES
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| DASHMATCH | ':' | FUNCTION S* <ins>[</ins>any<ins>|unsused]</ins>* ')'
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| '(' S* <ins>[</ins>any<ins>|unused]</ins>* ')' | '[' S* <ins>[</ins>any<ins>|unused]</ins>* ']'
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] S*;
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<ins>unused : block | ATKEYWORD S* | ';' S* | CDO S* | CDC S*;</ins>
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</pre>
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</blockquote>
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<p>and add the following explanation:
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<blockquote>
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<p><ins>The "unused" production is not used in CSS and will not be
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used by any future extension. It is included here only to help with
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error handling. (See 4.2 "Rules for handling parsing
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errors.")</ins>
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</blockquote>
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<!--========================== issue 136 ==========================-->
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<h3 id="t.4.1.2.2"><a
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within a URI value.</ins>
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</blockquote>
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<!--========================== issue 143 ==========================-->
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<h3 id="t.5.8.2"><a
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href="/TR/2009/CR-CSS2-20090908/selector.html#default-attrs">
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Section&nbsp;5.8.2 Default attribute values in DTDs</a></h3>
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<p><span class=date>[2010-09-29]</span> Clarify what is meant by
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&ldquo;is not required&rdquo;:
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<blockquote>
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<p>More precisely, a UA <ins>may, but</ins> is <em>not</em> required
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to<ins>,</ins> read an "external subset" of the DTD but <em>is</em>
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required to look for default attribute values in the document's
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"internal subset." (See [XML10] for definitions of these subsets.)
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<ins>Depending on the UA, a default attribute value defined in the external
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subset of the DTD might or might not appear in the document tree.</ins>
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<p>A UA that recognizes an XML namespace [XMLNAMESPACES] <ins>may,
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but</ins> is not required to<ins>,</ins> use its knowledge of that
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namespace to treat default attribute values as if they were present in
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the document. (E.g., an XHTML UA is not required to use its built-in
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knowledge of the XHTML DTD.)
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</blockquote>
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<p>and:
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<blockquote>
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<p>the first rule <del>will</del> <ins>might</ins> not match elements
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whose "notation" attribute is set by default, i.e., not set
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explicitly. To catch all cases, the attribute selector for the default
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value must be dropped:
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</blockquote>
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<!--========================== issue 175 ==========================-->
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<h3 id="t.5.11.4"><a
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<p><span class=date>[2010-08-06]</span> Also clarify that &ldquo;block
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box&rdquo; only refers to boxes in the same flow.
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<!--========================== issue 137 =========================-->
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<h3 id="t.9.2.1.1a"><a
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href="/TR/2009/CR-CSS2-20090908/visuren.html#anonymous-block-level">
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Section&nbsp;9.2.1.1 Anonymous block boxes</a></h3>
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<p><span class=date>[2010-09-29]</span> Percentage values that refer
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to dimensions of parent boxes ignore any intervening anonymous
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boxes. Add this paragraph:
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<blockquote>
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<p><ins>Anonymous block boxes are ignored when resolving percentage
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values that would refer to it: the closest non-anonymous ancestor box
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is used instead. For example, if the child of the anonymous block box
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inside the DIV above needs to know the height of its containing block
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to resolve a percentage height, then it will use the height of the
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containing block formed by the DIV, not of the anonymous block
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box.</ins>
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</blockquote>
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<!--========================== issue 138 =========================-->
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<h3 id="t.9.2.1.1b"><a
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href="/TR/2009/CR-CSS2-20090908/visuren.html#anonymous-block-level">
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Section&nbsp;9.2.1.1 Anonymous block boxes</a></h3>
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<p><span class=date>[2010-09-29]</span> Clarify the wording:
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<blockquote>
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<p>When an inline box contains an in-flow block box [&hellip;] When
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such an inline box is affected by relative positioning, the relative
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positioning also affects the block-level box <ins>contained in the
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block box</ins>.
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</blockquote>
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<!--========================== issue 120 ==========================-->
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<h3 id="t.9.2.2"><a
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<blockquote>
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<p>In certain cases (see <del>the preceding sections</del>
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<ins>e.g., sections 10.6.4 and 10.6.6</ins>), the height of an element
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is computed as follows:
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that establishes a block formatting context is computed as follows:
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<p>[&hellip;]
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