- From: Philip Taylor <philip@zaynar.demon.co.uk>
- Date: Sat, 18 Aug 2007 17:36:57 +0100
- To: HTML WG <public-html@w3.org>
The HTML5 parser ignores a leading line feed character in <pre> and <textarea>. Current browsers do things differently in some cases. http://software.hixie.ch/utilities/js/live-dom-viewer/?%3C%21DOCTYPE%20html%3E%0A%3Cstyle%3Ebody%20*%20%7B%20border%3A%201px%20solid%20%7D%3C/style%3E%0A%3Cbody%20onload%3D%22for%28var%20i%3D0%3Bi%3Cdocument.body.childNodes.length%3B++i%29w%28%27%3E%3E%3E%27+document.body.childNodes%5Bi%5D.firstChild.nodeValue+%27%3C%3C%3C%27%29%7D%22%3E%3Cdiv%3E%0A%0Adiv%0A%0A%3C/div%3E%3Cspan%20style%3D%22display%3A%20block%22%3E%0A%0Aspan%0A%0A%3C/span%3E%3Cp%20style%3D%22display%3A%20block%22%3E%0A%0Ap%0A%0A%3C/p%3E%3Cdiv%20style%3D%22white-space%3A%20pre%22%3E%0A%0Adiv%20white-space%3Apre%0A%0A%3C/div%3E%3Cspan%20style%3D%22white-space%3A%20pre%3B%20display%3A%20block%22%3E%0A%0Aspan%20white-space%3Apre%0A%0A%3C/span%3E%3Cp%20style%3D%22white-space%3A%20pre%3B%20display%3A%20block%22%3E%0A%0Ap%20white-space%3Apre%0A%0A%3C/p%3E%3Cpre%3E%0A%0Apre%0A%0A%3C/pre%3E%3Ctextarea%20rows%3D5%3E%0A%0Atextarea%0A%0A%3C/textarea%3E%3Cxmp%3E%0A%0Axmp%0A%0A%3C/xmp%3E%3Clisting%3E%0A%0Alisting%0A%0A%3C/ listing%3E%3Cplaintext%3E%0A%0Aplaintext%0A%0A Elements where the leading line feed is removed: IE 7: <pre>, <textarea>, <xmp>, <listing>, <plaintext> (and other elements like <div> are totally weird, particular when comparing the four different views and when adding CSS, and also it differs in quirks vs standards mode, and also it sometimes differs when loading a real page vs loading with document.write) Firefox 2: <pre>, <textarea>, <listing> Opera 9.2: <pre>, <listing> (and <textarea> seems to be handled outside the parser) Safari 3: <pre>, <listing> (and <textarea> seems to be handled outside the parser) HTML5: <pre>, <textarea> (I didn't look at any elements other than those in the above example.) In particular, <listing> is consistent between all browsers but missing from HTML5. IE's behaviour seems slightly useful for <xmp> and <plaintext>, since it lets you write <xmp> <!DOCTYPE HTML> <title>An example HTML5 document</title> <p>... </xmp> and not get an unexpected blank line at the top. -- Philip Taylor philip@zaynar.demon.co.uk
Received on Saturday, 18 August 2007 16:37:05 UTC