16504 2012-03-24 04:03:27 +0000 Improve white-space note. E.g. add that not just JS but CSS too is affected 2013-04-09 00:49:04 +0000 1 1 1 Unclassified HTML WG HTML/XHTML Compatibility Authoring Guide (ed: Eliot Graff) unspecified PC All RESOLVED FIXED http://dev.w3.org/html5/html-xhtml-author-guide/#attributes a11y P2 normal --- 1 xn--mlform-iua eliotgra eliotgra hans.hillen mike public-html-admin public-html-wg-issue-tracking public-html-bugzilla oldest_to_newest 66011 0 xn--mlform-iua 2012-03-24 04:03:27 +0000 Firstly: The Note at the end of the Attributes section currently says: ]] Practically speaking, for source code with newlines within attributes, DOMs generated via XML and HTML will be different; however, whitespace differences have no behavioral impact on the page unless explicitly examined by JavaScript, rendering the differences of small consequence. [[ However, Web authors actually try to style the rendering of alternative text of the <img> element. http://jandcgroup.com/2010/07/14/line-breaks-in-alt-attribute-using-css-white-space-property/ And, so, if authors try to - like in the link above - to use img{white-space:pre} in order that the line breaks of the @alt text is preserved, they will get a surprise: Unless they remembered to use NCR, there will not be any line breaks, meaning that it will look too the author as if white-space:pre did not work. [I just had this supprise myself.] Therefore, please mention that attributes whose content is rendered visually, such as the content of @alt, is also affected. Secondly: It is a bit confusing that the note says that "polyglot markup does not use newline characters within an attribute", because in the example just above the note, there are newline characters - in the form of NCRs. Please change the text of the note by adding the wording 'directly typed': "does not use DIRECTLY TYPED newline character". And also, in the last sentence of the note, you should say 'directly typed newline' and not just 'newline'. Thirdly: Also, what do you mean by 'linefeed characters' in plural? There is only one linefeed character. Fourthly: please be consistent with regard to 'linefeed' vs 'line feed' - you use both, now. Fift: I don't know from what the draft says about @title - HTMl5 only recommends one to be cautious with newline inside @title: http://dev.w3.org/html5/spec/global-attributes.html#the-title-attribute {Sorry, this became much longer than I had planned ...} 85761 1 eliotgra 2013-04-09 00:49:04 +0000 -Removed ban on newline in @title -Added mention of attributes that render visually being afffected by white space. -Added disambiguator about "directly typed" newline characters. -Couldn't repro "line feed" v. "linefeed" -Couldn't repro "linefeed characters" new revision: 1.95; previous revision: 1.94