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Bug 6462 - Self-reference and cyclic references in headers=''
Summary: Self-reference and cyclic references in headers=''
Alias: None
Product: HTML WG
Classification: Unclassified
Component: pre-LC1 HTML5 spec (editor: Ian Hickson) (show other bugs)
Version: unspecified
Hardware: All All
: P2 normal
Target Milestone: ---
Assignee: Ian 'Hixie' Hickson
QA Contact: HTML WG Bugzilla archive list
Keywords: a11y, a11y_table_headers
Depends on:
Reported: 2009-01-21 06:55 UTC by Simon Pieters
Modified: 2010-10-04 13:59 UTC (History)
5 users (show)

See Also:


Description Simon Pieters 2009-01-21 06:55:49 UTC
The td and th element may have a headers content attribute specified. The headers attribute, if specified, must contain a string consisting of an unordered set of unique space-separated tokens, each of which must have the value of an ID of a th element taking part in the same table as the td or th element (as defined by the table model).
]] --

This should ban self-reference and maybe cyclic references.
Comment 1 Laura Carlson 2009-02-12 15:55:56 UTC
For Reference"Cyclic Header Chains" Related Wiki Page:
Comment 2 Michael Cooper 2010-02-11 17:26:22 UTC
Per the proposal at, the HTML A11Y TF does not plan to formally work on this issue at this time. This does not mean the TF has no interest in it, but does not have immediate plans to work on it. The TF may review the issue in the future.