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Clean up stray `<p>` tags added by `wpautop()` inside block level tags. 

`autop()` can sometimes get confused and not clean up stray `<p>` or `</p>` tags inside block level elements, which produces sub-optimal HTML. While browsers can generally handle it, there's no need to make things harder for them if we don't have to.

Props pento, ayubi, pbearne, jond, azaozz, 1994rstefan, dionysous, MikeHansenMe, jorbin, miqrogroove, niallkennedy.
Fixes #27350.



Built from https://develop.svn.wordpress.org/trunk@45585


git-svn-id: http://core.svn.wordpress.org/trunk@45396 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This commit is contained in:
Gary Pendergast 2019-07-02 01:31:56 +00:00
parent 4568c13df8
commit 23de362563
2 changed files with 12 additions and 5 deletions
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15
wp-includes/formatting.php
View File

@ -492,7 +492,8 @@ function wpautop( $pee, $br = true ) {
// Change multiple <br>s into two line breaks, which will turn into paragraphs.
$pee = preg_replace( '|<br\s*/?>\s*<br\s*/?>|', "\n\n", $pee );
$allblocks = '(?:table|thead|tfoot|caption|col|colgroup|tbody|tr|td|th|div|dl|dd|dt|ul|ol|li|pre|form|map|area|blockquote|address|math|style|p|h[1-6]|hr|fieldset|legend|section|article|aside|hgroup|header|footer|nav|figure|figcaption|details|menu|summary)';
$allblocks = '(?:table|thead|tfoot|caption|col|colgroup|tbody|tr|td|th|div|dl|dd|dt|ul|ol|li|pre|form|map|area|blockquote|address|math|style|p|h[1-6]|hr|fieldset|legend|section|article|aside|hgroup|header|footer|nav|figure|figcaption|details|menu|summary)\b';
$allblocksexceptp = str_replace( '|p|', '|', $allblocks );
// Add a double line break above block-level opening tags.
$pee = preg_replace( '!(<' . $allblocks . '[\s/>])!', "\n\n$1", $pee );
@ -558,12 +559,12 @@ function wpautop( $pee, $br = true ) {
// Under certain strange conditions it could create a P of entirely whitespace.
$pee = preg_replace( '|<p>\s*</p>|', '', $pee );
// Add a closing <p> inside <div>, <address>, or <form> tag if missing.
$pee = preg_replace( '!<p>([^<]+)</(div|address|form)>!', '<p>$1</p></$2>', $pee );
// If an opening or closing block element tag is wrapped in a <p>, unwrap it.
$pee = preg_replace( '!<p>\s*(</?' . $allblocks . '[^>]*>)\s*</p>!', '$1', $pee );
// Add a closing <p> inside <div>, <address>, or <form> tag if missing.
$pee = preg_replace( '!<p>([^<]+)</(div|address|form)>!', '<p>$1</p></$2>', $pee );
// In some cases <li> may get wrapped in <p>, fix them.
$pee = preg_replace( '|<p>(<li.+?)</p>|', '$1', $pee );
@ -577,6 +578,12 @@ function wpautop( $pee, $br = true ) {
// If an opening or closing block element tag is followed by a closing <p> tag, remove it.
$pee = preg_replace( '!(</?' . $allblocks . '[^>]*>)\s*</p>!', '$1', $pee );
// If a closing <p> tag is inside a block element tag, without a preceding opening <p> tag, remove it.
$pee = preg_replace( '#(<(' . $allblocksexceptp . ')[^>]*>)(((?!<p>|</\2>).)*)</p>#s', '$1$3', $pee );
// If an opening <p> tag is inside a block element tag, without a following closing <p> tag, remove it.
$pee = preg_replace( '#<p>(((?!</p>).)*</' . $allblocksexceptp . '>)#s', '$1', $pee );
// Optionally insert line breaks.
if ( $br ) {
// Replace newlines that shouldn't be touched with a placeholder.

2
wp-includes/version.php
View File

@ -13,7 +13,7 @@
*
* @global string $wp_version
*/
$wp_version = '5.3-alpha-45584';
$wp_version = '5.3-alpha-45585';
/**
* Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.