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Timestamp:
10/07/2025 06:22:02 AM (2 months ago)
Author:
westonruter
Message:

Media: Switch to enqueueing contain-intrinsic-size CSS fix for IMG tags having sizes=auto.

This deprecates the wp_print_auto_sizes_contain_css_fix() function running at wp_head priority 1, in favor of a wp_enqueue_img_auto_sizes_contain_css_fix() function which runs just before at wp_head priority 0. The latter function unhooks the former while also enqueueing an inline style to be printed with all other styles but up front to preserve the cascade. This eliminates directly printing the STYLE tag, which was a change done similarly before for the emoji styles. See #58775.

For backwards compatibility, the CSS can still be prevented from being enqueued/printed via:

remove_action( 'wp_head', 'wp_print_auto_sizes_contain_css_fix', 1 );

This change ensures that all styles are printed together using the correct API for emitting styles.

Developed in ​https://github.com/WordPress/wordpress-develop/pull/8954.

Follow-up to [59435].

Props westonruter, sabernhardt, SirLouen, flixos90, joemcgill, SergeyBiryukov, superpoincare.
See #62413.
Fixes #62731.

File:
1 edited

Legend:

Unmodified
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  • trunk/src/wp-includes/default-filters.php

    r60076 r60910  
    629629add_filter( 'style_loader_src', 'wp_style_loader_src', 10, 2 );
    630630
    631 add_action( 'wp_head', 'wp_print_auto_sizes_contain_css_fix', 1 );
     631add_action( 'wp_head', 'wp_enqueue_img_auto_sizes_contain_css_fix', 0 ); // Must run before wp_print_auto_sizes_contain_css_fix().
     632add_action( 'wp_head', 'wp_print_auto_sizes_contain_css_fix', 1 ); // Retained for backwards-compatibility. Unhooked by wp_enqueue_img_auto_sizes_contain_css_fix().
    632633add_action( 'wp_head', 'wp_maybe_inline_styles', 1 ); // Run for styles enqueued in <head>.
    633634add_action( 'wp_footer', 'wp_maybe_inline_styles', 1 ); // Run for late-loaded styles in the footer.
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