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- Add colors proposal, for constraining allowed colors in document - Add strictness proposal, for attributes that are permitted by Transitional but not by HTML Purifier git-svn-id: http://htmlpurifier.org/svnroot/htmlpurifier/trunk@442 48356398-32a2-884e-a903-53898d9a118a
26 lines
1.3 KiB
Plaintext
26 lines
1.3 KiB
Plaintext
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Is HTML Purifier Strict or Transitional?
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A little bit of helpful guidance
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Despite the fact that HTML Purifier professes only to support transitional
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HTML, it rejects a lot of attributes and elements that are actually, indeed,
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valid. You can investigate progress.html to find out precisely what we
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are doing to these *deprecated* attributes.
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However, users have found that Strict HTML imposes some quite unreasonable
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restrictions on certain things. The start and value attributes in ol and
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li (respectively) perhaps are the most contested. There's is currently no
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widely supported browser method short of JavaScript that can replace these
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two deprecated elements. HTML Purifier does not currently support them, but
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it might behoove us to do so while our output is still transitional.
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Fortunantely, that's the only real bugger case. The others have near-perfect
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CSS equivalents, and were presentational anyway. However, the other question
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pops up: should we always convert these to the CSS forms when 1. the spec
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allows them anyway and 2. older browsers support them better? After all, the
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whole point about CSS is to seperate styling from content, so inline styling
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doesn't solve that problem.
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It's an icky question, and we'll have to deal with it as more and more
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transforms get implemented.
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