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Protect newlines inside of CDATA. This was breaking things, notably inline JS that used comments for HTML standards compat.

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* Tokenize newlines in `WP_Embed::autoembed()` before running `->autoembed_callback()`
* Tokenize newlines with placeholders in `wpautop()` 
* Introduce `wp_html_split()` to DRY the RegEx from `wp_replace_in_html_tags()` and `do_shortcodes_in_html_tags()`

Adds unit tests.

Props miqrogroove, kitchin, azaozz.
Fixes #33106.


git-svn-id: https://develop.svn.wordpress.org/trunk@33469 602fd350-edb4-49c9-b593-d223f7449a82
This commit is contained in:
Scott Taylor
2015-07-28 23:02:04 +00:00
parent 1558be9dfa
commit 4f814ec9ae
5 changed files with 225 additions and 46 deletions
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15
src/wp-includes/class-wp-embed.php
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@@ -129,6 +129,12 @@ class WP_Embed {
* `->maybe_make_link()` can return false on failure.
*/
public function shortcode( $attr, $url = '' ) {
// This filter can be used to output custom HTML instead of allowing oEmbed to run.
$custom = apply_filters( 'wp_embed_shortcode_custom', false, $attr, $url );
if ( false !== $custom ) {
return $custom;
}
$post = get_post();
if ( empty( $url ) && ! empty( $attr['src'] ) ) {
@@ -318,11 +324,14 @@ class WP_Embed {
* @return string Potentially modified $content.
*/
public function autoembed( $content ) {
// Strip newlines from all elements.
$content = wp_replace_in_html_tags( $content, array( "\n" => " " ) );
// Replace line breaks from all HTML elements with placeholders.
$content = wp_replace_in_html_tags( $content, array( "\n" => '<!-- wp-line-break -->' ) );
// Find URLs that are on their own line.
return preg_replace_callback( '|^(\s*)(https?://[^\s"]+)(\s*)$|im', array( $this, 'autoembed_callback' ), $content );
$content = preg_replace_callback( '|^(\s*)(https?://[^\s"]+)(\s*)$|im', array( $this, 'autoembed_callback' ), $content );
// Put the line breaks back.
return str_replace( '<!-- wp-line-break -->', "\n", $content );
}
/**