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KSES: add MathML tags.
These tags are needed for the new Math block, which is included in WP 6.9. See WordPress/gutenberg#72182. See #10307. Fixes #64115. git-svn-id: https://develop.svn.wordpress.org/trunk@61017 602fd350-edb4-49c9-b593-d223f7449a82
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‎src/wp-includes/kses.php‎

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@@ -415,6 +415,185 @@
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'wbr' => array(),
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);
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// https://www.w3.org/TR/mathml-core/#global-attributes
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// Except common attributes added by _wp_add_global_attributes.
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$math_global_attributes = array(
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'displaystyle' => true,
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'scriptlevel' => true,
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'mathbackground' => true,
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'mathcolor' => true,
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'mathsize' => true,
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// Common attributes also defined by _wp_add_global_attributes.
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// We do not want to add all those global attributes though.
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'class' => true,
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'data-*' => true,
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'dir' => true,
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'id' => true,
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'style' => true,
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);
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$math_overunder_attributes = array(
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'accentunder' => true,
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'accent' => true,
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);
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$allowedposttags = array_merge(
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$allowedposttags,
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array(
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// https://www.w3.org/TR/mathml-core/#the-top-level-math-element
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'math' => array_merge(
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$math_global_attributes,
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array(
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'display' => true,
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)
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),
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// https://www.w3.org/TR/mathml-core/#token-elements
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// https://www.w3.org/TR/mathml-core/#text-mtext
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'mtext' => $math_global_attributes,
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// https://www.w3.org/TR/mathml-core/#the-mi-element
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'mi' => array_merge(
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$math_global_attributes,
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array(
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'mathvariant' => true,
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)
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),
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// https://www.w3.org/TR/mathml-core/#number-mn
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'mn' => $math_global_attributes,
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// https://www.w3.org/TR/mathml-core/#operator-fence-separator-or-accent-mo
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'mo' => array_merge(
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$math_global_attributes,
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array(
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'form' => true,
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'fence' => true,
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'separator' => true,
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'lspace' => true,
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'rspace' => true,
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'stretchy' => true,
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'symmetric' => true,
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'maxsize' => true,
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'minsize' => true,
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'largeop' => true,
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'movablelimits' => true,
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)
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),
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// https://www.w3.org/TR/mathml-core/#space-mspace
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'mspace' => array_merge(
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$math_global_attributes,
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array(
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'width' => true,
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'height' => true,
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'depth' => true,
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)
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),
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// https://www.w3.org/TR/mathml-core/#string-literal-ms
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'ms' => $math_global_attributes,
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// https://www.w3.org/TR/mathml-core/#general-layout-schemata
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// https://www.w3.org/TR/mathml-core/#horizontally-group-sub-expressions-mrow
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'mrow' => $math_global_attributes,
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// https://www.w3.org/TR/mathml-core/#fractions-mfrac
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'mfrac' => array_merge(
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$math_global_attributes,
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array(
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'linethickness' => true,
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)
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),
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// https://www.w3.org/TR/mathml-core/#radicals-msqrt-mroot
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'msqrt' => $math_global_attributes,
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'mroot' => $math_global_attributes,
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// https://www.w3.org/TR/mathml-core/#style-change-mstyle
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'mstyle' => $math_global_attributes,
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// https://www.w3.org/TR/mathml-core/#error-message-merror
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'merror' => $math_global_attributes,
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// https://www.w3.org/TR/mathml-core/#adjust-space-around-content-mpadded
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'mpadded' => array_merge(
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$math_global_attributes,
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array(
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'width' => true,
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'height' => true,
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'depth' => true,
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'lspace' => true,
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'voffset' => true,
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)
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),
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// https://www.w3.org/TR/mathml-core/#making-sub-expressions-invisible-mphantom
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'mphantom' => $math_global_attributes,
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// https://www.w3.org/TR/mathml-core/#script-and-limit-schemata
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// https://www.w3.org/TR/mathml-core/#subscripts-and-superscripts-msub-msup-msubsup
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'msub' => $math_global_attributes,
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'msup' => $math_global_attributes,
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'msubsup' => $math_global_attributes,
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// https://www.w3.org/TR/mathml-core/#underscripts-and-overscripts-munder-mover-munderover
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'munder' => array_merge( $math_global_attributes, $math_overunder_attributes ),
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'mover' => array_merge( $math_global_attributes, $math_overunder_attributes ),
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'munderover' => array_merge( $math_global_attributes, $math_overunder_attributes ),
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// https://www.w3.org/TR/mathml-core/#prescripts-and-tensor-indices-mmultiscripts
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'mmultiscripts' => $math_global_attributes,
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'mprescripts' => $math_global_attributes,
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// https://www.w3.org/TR/mathml-core/#tabular-math
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// https://www.w3.org/TR/mathml-core/#table-or-matrix-mtable
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'mtable' => array_merge(
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$math_global_attributes,
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array(
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// Non-standard, used by temml/katex.
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// https://developer.mozilla.org/en-US/docs/Web/MathML/Reference/Element/mtable
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'columnalign' => true,
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'rowspacing' => true,
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'columnspacing' => true,
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'align' => true,
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'rowalign' => true,
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'columnlines' => true,
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'rowlines' => true,
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'frame' => true,
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'framespacing' => true,
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'width' => true,
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)
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),
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// https://www.w3.org/TR/mathml-core/#row-in-table-or-matrix-mtr
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'mtr' => array_merge(
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$math_global_attributes,
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array(
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// Non-standard, used by temml/katex.
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// https://developer.mozilla.org/en-US/docs/Web/MathML/Reference/Element/mtr
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'columnalign' => true,
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'rowalign' => true,
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)
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),
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// https://www.w3.org/TR/mathml-core/#entry-in-table-or-matrix-mtd
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'mtd' => array_merge(
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$math_global_attributes,
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array(
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'columnspan' => true,
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'rowspan' => true,
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// Non-standard, used by temml/katex.
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// https://developer.mozilla.org/en-US/docs/Web/MathML/Reference/Element/mtd
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'columnalign' => true,
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'rowalign' => true,
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)
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),
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// https://www.w3.org/TR/mathml-core/#semantics-and-presentation
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'semantics' => $math_global_attributes,
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'annotation' => array_merge(
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$math_global_attributes,
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array(
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'encoding' => true,
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)
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),
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// Non-standard but widely supported, used by temml/katex.
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'menclose' => array_merge(
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$math_global_attributes,
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array(
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'notation' => true,
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)
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),
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)
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);
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/**
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* @var array[] $allowedtags Array of KSES allowed HTML elements.
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* @since 1.0.0

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