2006-11-22 04:49:26 +00:00
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Loose versus Strict
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Changes from one doctype to another
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There are changes. Wow, how insightful. Not everything changed is relevant
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to HTML Purifier, though, so let's take a look:
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== Major incompatibilities ==
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BLOCKQUOTE changes from 'flow' to 'block'
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behavior: inline inner contents should not be nuked, paragraph as necessary
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U, S, STRIKE cut
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behavior: replace with appropriate inline span + CSS
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ADDRESS from potpourri to Inline (removes p tags)
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2006-11-22 18:17:39 +00:00
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behavior: p tags silently dropped or replaced with something (<br>)
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2006-11-22 04:49:26 +00:00
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== Things we can loosen up ==
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Tags DIR, MENU, CENTER, ISINDEX, FONT, BASEFONT? allowed in loose
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Attributes allowed in loose:
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div,p,h#.align
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ul,ol.type
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ul,ol,dl.compact
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ol.start
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li.type,value
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hr.align,noshade,size,width
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pre.width
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img.name?,align,border,hspace,vspace
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table.align,bgcolor
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caption.align
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tr.bgcolor
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th,td.nowrap,bgcolor,width,height
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== Periphery issues ==
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A tag's attribute 'target' (for selecting frames) cut
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behavior: shouldn't be needed, use loose doctype if needed
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OL/LI tag's attribute 'start' (for renumbering lists) cut
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behavior: no substitute, just delete
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Attribute 'name' deprecated in favor of 'id'
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behavior: create proper AttrTransform
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PRE tag allows SUB/SUP? (strict dtd comment vs syntax, loose disallows)
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