Validator.nu Useful Warning Requests - Revision history

MikeSmith at 14:19, 17 March 2015

2015-03-17T14:19:21Z

← Older revision		Revision as of 14:19, 17 March 2015
Line 1:		Line 1:
	{[Obsolete}}		{{Obsolete}}
	This page documents requests for potential optional checks to be implemented by HTML5 QA tools, like Validator.nu. This is only intended to document feature requests, and may not reflect what is, or will be, implemented in the future.		This page documents requests for potential optional checks to be implemented by HTML5 QA tools, like Validator.nu. This is only intended to document feature requests, and may not reflect what is, or will be, implemented in the future.

MikeSmith at 14:19, 17 March 2015

2015-03-17T14:19:02Z

← Older revision		Revision as of 14:19, 17 March 2015
Line 1:		Line 1:
			{[Obsolete}}
	This page documents requests for potential optional checks to be implemented by HTML5 QA tools, like Validator.nu. This is only intended to document feature requests, and may not reflect what is, or will be, implemented in the future.		This page documents requests for potential optional checks to be implemented by HTML5 QA tools, like Validator.nu. This is only intended to document feature requests, and may not reflect what is, or will be, implemented in the future.

Lachlan Hunt: /* Polyglot Document Checking */ Updated character encoding information

2010-04-28T11:31:22Z

Polyglot Document Checking: Updated character encoding information

← Older revision		Revision as of 11:31, 28 April 2010
Line 102:		Line 102:
	\|-		\|-
	! Default Character Encoding		! Default Character Encoding
	\| The default character encoding for <code>text/html</code> is ~~UTF~~-8. For <code>application/xhtml+xml</code> (and other XML types), it is UTF-8.		\| The default character encoding for <code>text/html</code> is effectively dependent upon the end-user's locale (Windows-1252 for most Western locales). For <code>application/xhtml+xml</code> (and other XML types), it is UTF-8.
	\| Use UTF-8 and declare this using either: <code><meta charset="UTF-8"></code>, ensure the encoding is declared in the transport layer (HTTP Content-Type header), or use UTF-8 or UTF-16 with an appropriate Byte Order Mark.		\| Use UTF-8 and declare this using either: <code><meta charset="UTF-8"></code>, ensure the encoding is declared in the transport layer (HTTP Content-Type header), or use UTF-8 or UTF-16 with an appropriate Byte Order Mark.
	\| XHTML-compatible		\| XHTML-compatible

Lachlan Hunt: /* Polyglot Document Checking */ Added xml:lang

2009-09-05T07:53:11Z

Polyglot Document Checking: Added xml:lang

← Older revision		Revision as of 07:53, 5 September 2009
Line 86:		Line 86:
	! Polyglot Level Requirement		! Polyglot Level Requirement
	\|-		\|-
	! <code>xmlns</code> and <code>xmlns:<var>prefix</var></code> attributes.		! The <code>xmlns</code> and <code>xmlns:<var>prefix</var></code> attributes.
	\| The <code>html</code> root element needs to have an <code>xmlns="http://www.w3.org/1999/xhtml"</code> attribute. The <code>svg</code> and <code>math</code> elements need to declare the appropriate namespaces for SVG and MathML, respectively, and, if used within the document, XLink.		\| The <code>html</code> root element needs to have an <code>xmlns="http://www.w3.org/1999/xhtml"</code> attribute. The <code>svg</code> and <code>math</code> elements need to declare the appropriate namespaces for SVG and MathML, respectively, and, if used within the document, XLink.
	\| In DOM implementations for XHTML, these attributes are in the <code>http://www.w3.org/2000/xmlns/</code> namespace. In HTML, these are in no namespace. This issue is '''unavoidable'''.		\| In DOM implementations for XHTML, these attributes are in the <code>http://www.w3.org/2000/xmlns/</code> namespace. For HTML, these are in no namespace. This issue is '''unavoidable'''.
	\| XHTML-compatible (and SVG+MathML)		\| XHTML-compatible (and SVG+MathML)
			\|-
			! The <code>xml:lang</code> attribute
			\| Meaningless talisman in HTML.
			\| In DOM implementations for XHTML, <code>xml:lang</code> represents the lang attribute in the XML namespace. For HTML, it represents an attribute in no namespace with the literal localname "xml:lang". This issue is '''unavoidable'''.
			\|
	\|-		\|-
	! Case sensitivity		! Case sensitivity

Lachlan Hunt: /* Polyglot Document Checking */ Described escaping text spans for RCDATA

2009-09-05T06:53:09Z

Polyglot Document Checking: Described escaping text spans for RCDATA

← Older revision		Revision as of 06:53, 5 September 2009
Line 147:		Line 147:
	\|-		\|-
	! The <code>textarea</code> and <code>title</code> Elements		! The <code>textarea</code> and <code>title</code> Elements
	\| The content model of these elements is RCDATA in HTML, but PCDATA in XHTML. These elements may not contain escaping text spans, or unescaped ampersands or less than characters.		\| The content model of these elements is RCDATA in HTML, but PCDATA in XHTML. These elements may not contain escaping text spans (<code><!-- ... --></code>, because they look like comments), or unescaped ampersands or less than characters.
	\|		\|
	\| XHTML-compatible		\| XHTML-compatible

Lachlan Hunt: /* Polyglot Document Checking */ Updted unescaped special chars

2009-09-05T06:49:17Z

Polyglot Document Checking: Updted unescaped special chars

← Older revision		Revision as of 06:49, 5 September 2009
Line 107:		Line 107:
	\|-		\|-
	! Unescaped Special Chars		! Unescaped Special Chars
	\| Unescaped ampersand (<code>&</code>) or less-than (<code><</code>) characters are not allowed in XHTML		\| Unescaped ampersand (<code>&</code>) or less-than (<code><</code>) characters are not allowed in text and attribute values, within XHTML. (This doesn't include within CDATA sections, comments, etc.)
	\| HTML can include unescaped ampersands where they are unambiguous, and unescaped less than characters within rawtext or RCDATA content, and quoted attributes.		\| HTML can include unescaped ampersands where they are unambiguous, and unescaped less than characters within rawtext or RCDATA content, and quoted attributes.
	\| XHTML-compatible		\| XHTML-compatible

Lachlan Hunt: /* Polyglot Document Checking */

2009-09-05T01:40:25Z

Polyglot Document Checking

@@ Line 77: / Line 77: @@
 Note that these descriptions intentionally ignore differences that could be caused by script and stylesheet processing.
-The following is a table of issues that would need to be checked to ensure that a document is a polyglot document.
+The following is a table of issues that would need to be checked to ensure that a given, conforming HTML document is a polyglot document.  This does not list all issues that would need to be checked to ensure that a given, conforming XHTML document is a polyglot document, however.  As such, syntactic XML constructs which are not valid in HTML are not listed here. For example, the internal subset of a DOCTYPE declaration or the use of CDATA sections within HTML elements.
 {| class="wikitable" border="1"
@@ Line 101: / Line 99: @@
 |  The default character encoding for <code>text/html</code> is UTF-8. For <code>application/xhtml+xml</code> (and other XML types), it is UTF-8.
 |  Use UTF-8 and declare this using either: <code>&lt;meta charset="UTF-8"&gt;</code>, ensure the encoding is declared in the transport layer (HTTP Content-Type header), or use UTF-8 or UTF-16 with an appropriate Byte Order Mark.
 |  XHTML-compatible
 |-
@@ Line 107: / Line 115: @@
+|
 |  XHTML-compatible
 |-
 !  Line feeds after start tags
@@ Line 136: / Line 139: @@
 |  Neither start- nor end-tags may be omitted.
+|
 |  XHTML-compatible
 |-
@@ Line 142: / Line 155: @@
 |  Explicitly include the <code>tbody</code> element.
 |  Strict Polyglot
 |-
 !  The <code>noscript</code> Element

Lachlan Hunt: /* Polyglot Document Checking */ Updated character encoding issue

2009-09-04T18:57:36Z

Polyglot Document Checking: Updated character encoding issue

← Older revision		Revision as of 18:57, 4 September 2009
Line 100:		Line 100:
	! Default Character Encoding		! Default Character Encoding
	\| The default character encoding for <code>text/html</code> is UTF-8. For <code>application/xhtml+xml</code> (and other XML types), it is UTF-8.		\| The default character encoding for <code>text/html</code> is UTF-8. For <code>application/xhtml+xml</code> (and other XML types), it is UTF-8.
	\| Use UTF-8 and declare this using: <code><meta charset="UTF-8"></code>, ~~or otherwise~~ ensure the encoding is declared in the transport layer (HTTP Content-Type header).		\| Use UTF-8 and declare this using either: <code><meta charset="UTF-8"></code>, ensure the encoding is declared in the transport layer (HTTP Content-Type header), or use UTF-8 or UTF-16 with an appropriate Byte Order Mark.
	\| XHTML-compatible		\| XHTML-compatible
	\|-		\|-

Lachlan Hunt: /* Polyglot Document Checking */ Added noscript and iframe elements

2009-09-04T17:59:51Z

Polyglot Document Checking: Added noscript and iframe elements

@@ Line 146: / Line 146: @@
 |  Without a DTD, only the 5 predefined entity references in XML may be used.
 |  The additional entity references defined and supported using the XHTML 1.0 or 1.1 DOCTYPE cannot be used in XHTML.
 |  XHTML-compatible
 |}

Lachlan Hunt: /* Polyglot Document Checking */

2009-09-04T17:20:00Z

Polyglot Document Checking

← Older revision		Revision as of 17:20, 4 September 2009
Line 146:		Line 146:
	\| Without a DTD, only the 5 predefined entity references in XML may be used.		\| Without a DTD, only the 5 predefined entity references in XML may be used.
	\| The additional entity references defined and supported using the XHTML 1.0 or 1.1 DOCTYPE cannot be used in XHTML.		\| The additional entity references defined and supported using the XHTML 1.0 or 1.1 DOCTYPE cannot be used in XHTML.
	\|		\| XHTML-compatible
	\|}		\|}