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Script Loader: Harden removal of script tag wrappers.

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* Add `wp_remove_surrounding_empty_script_tags()` to more precisely remove script tag wrappers and warn when doing it wrong.
* Add clarifying comments for XML escaping logic in `wp_get_inline_script_tag()`.
* Leverage `WP_HTML_Tag_Processor` in `test_remove_frameless_preview_messenger_channel`.
* Reuse `assertEqualMarkup` in `test_blocking_dependent_with_delayed_dependency`.
* Normalize whitespace in `parse_markup_fragment` for `assertEqualMarkup`.

Follow-up to [56687].
Props dmsnell, westonruter, flixos90.
See #58664.


git-svn-id: https://develop.svn.wordpress.org/trunk@56748 602fd350-edb4-49c9-b593-d223f7449a82
This commit is contained in:
Weston Ruter
2023-09-29 19:45:53 +00:00
parent 4baf0a1eda
commit 8c0adc93df
12 changed files with 193 additions and 20 deletions
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src/wp-includes/theme-templates.php
+1 -1
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@@ -205,7 +205,7 @@ function the_block_template_skip_link() {
}() );
</script>
<?php
$skip_link_script = str_replace( array( '<script>', '</script>' ), '', ob_get_clean() );
$skip_link_script = wp_remove_surrounding_empty_script_tags( ob_get_clean() );
$script_handle = 'wp-block-template-skip-link';
wp_register_script( $script_handle, false );
wp_add_inline_script( $script_handle, $skip_link_script );