- From: <bugzilla@jessica.w3.org>
- Date: Tue, 14 Aug 2012 10:02:35 +0000
- To: public-html-bugzilla@w3.org
https://www.w3.org/Bugs/Public/show_bug.cgi?id=18555
Summary: title="<white-space>" should not cause a tooltip
Product: HTML WG
Version: unspecified
Platform: PC
URL: http://dev.w3.org/html5/spec/global-attributes.html#th
e-title-attribute
OS/Version: All
Status: NEW
Keywords: a11y
Severity: normal
Priority: P3
Component: HTML5 spec
AssignedTo: dave.null@w3.org
ReportedBy: xn--mlform-iua@xn--mlform-iua.no
QAContact: public-html-bugzilla@w3.org
CC: mike@w3.org, public-html-wg-issue-tracking@w3.org,
public-html@w3.org
Please see my change proposal for the meta generator issue:
http://www.w3.org/html/wg/wiki/TitleKeyContentMark
During the writing of that proposal, it became evident that Firefox does not
render a tooltip if the only content of a @title attribute is white-space.
This seems to be the case for most/all of the characters of the White_Space
and the Pattern_White_Space cathegory
http://unicode.org/Public/UNIDATA/PropList.txt
(However, it - somewhat illogically - fails to avoid the tooltip for the
characters with 'ZERO WIDTH' as part of its name.)
The Firefox behavior seems useful because it
(a) avoid unintended tooltips (presumably this is why Firefox
has this behavior)
(b) it allows the title attribute to be used - without visually
disturbing sighted users - as an explicit 'key content
trigger' for images in lack of alt. (See my change prop
for more data on this.)
Thus, I propose to require roughly the same behavior from all browser.
Cross browser, this - or _almost_ this behavior - is only seen for the
MONGOLIAN VOWEL SEPARATOR character (U+180E). However, IE10 and Opera breaks
the cross browser unity ...
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Received on Tuesday, 14 August 2012 10:02:38 UTC