[whatwg] event.dataTransfer formats

Daniel Cheng dcheng at google.com
Sat Jan 23 11:09:33 PST 2010

> Formats are generally given by MIME types, with some values special-cased
> for legacy reasons. For the purposes of this API, however, the format
> strings are opaque, case-sensitive, strings, and the empty string is a valid
> format string.

RFC 2616 has this to say about MIME types:

> The type, subtype, and parameter attribute names are case-insensitive.

IE also ignores case for format strings:

>     <script>

      window.clipboardData.setData('Text', 'FAILURE');

      window.clipboardData.setData('tEXT', 'SUCCESS');



results in an alert saying 'SUCCESS'.

Given that, would it make sense to change the spec to make format strings

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