Admit capitalization in attribute names

ezyang / htmlpurifier

Standards compliant HTML filter written in PHP

http://htmlpurifier.org

GNU Lesser General Public License v2.1

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Admit capitalization in attribute names #203

Open xaviripo opened 5 years ago

xaviripo commented 5 years ago

Currently, attribute names are not allowed to have uppercase letters (they are converted to lowercase). This got in the way of the implementation of the MathML definitionURL attribute in csymbol (see e.g. https://www.w3.org/Math/testsuite/build/main/frameset-full.xhtml).