_jetpack_og_get_image_validate_size() – Validate the width and height against required width and height
Actions::do_only_first_initial_sync() – Do an initial full sync only if one has not already been started.
Atomic_Admin_Menu::override_the_theme_installer() – Override the global submenu_file for theme-install.php page so the WP Admin menu item gets highlighted correctly.
Base_Admin_Menu::override_svg_icons() – Checks for any SVG icons in the menu, and overrides things so that we can display the icon in the correct colour for the theme.
Classic_Search::fix_aggregation_ordering() – Takes an array of aggregation results, and ensures the array key ordering matches the key order in $desired which is the input order.
Comments::only_allow_white_listed_comment_type_transitions() – Prevents any comment types that are not in the whitelist from being enqueued and sent to WordPress.com.
Comments::only_allow_white_listed_comment_types() – Prevents any comment types that are not in the whitelist from being enqueued and sent to WordPress.com.
convert_old_jetpack_search_sidebar() – Map the old Jetpack Search sidebar to the new Instant Search sidebar.
csstidy_optimise::analyse_css_number() – Checks if a given string is a CSS valid number. If it is, an array containing the value and unit is returned
csstidy_optimise::AnalyseCssNumber() – Checks if a given string is a CSS valid number. If it is, an array containing the value and unit is returned
csstidy_optimise::cut_color() – Color compression function. Converts all rgb() values to #-values and uses the short-form if possible. Also replaces 4 color names by #-values.
csstidy_optimise::discard_invalid_selectors() – Removes invalid selectors and their corresponding rule-sets as defined by 4.1.7 in REC-CSS2. This is a very rudimentary check and should be replaced by a full-blown parsing algorithm or regular expression
csstidy_optimise::dissolve_4value_shorthands() – Dissolves properties like padding:10px 10px 10px to padding-top:10px;padding-bottom:10px;.
csstidy_optimise::explode_ws() – Explodes a string as explode() does, however, not if $sep is escaped or within a string.
csstidy_optimise::merge_4value_shorthands() – Merges Shorthand properties again, the opposite of dissolve_4value_shorthands()
csstidy_optimise::merge_selectors() – Merges selectors with same properties. Example: a{color:red} b{color:red} -> a,b{color:red} Very basic and has at least one bug. Hopefully there is a replacement soon.
csstidy_optimise::shorthand() – Compresses shorthand values. Example: margin:1px 1px 1px 1px -> margin:1px
Domain_Only_Admin_Menu::should_link_to_wp_admin() – Whether to use wp-admin pages rather than Calypso.
Filter_Embedded_HTML_Objects::maybe_create_links() – Failed embeds are stripped, so let’s convert them to links at least.
Filter_Embedded_HTML_Objects::regexp_entities() – Replace HTML entities in current HTML element regexp.
Filter_Embedded_HTML_Objects::register() – Register a filter to convert a matching HTML element to a shortcode.
Filter_Embedded_HTML_Objects::sh_regexp_callback() – Capture tokens found in Syntax Highlighter and collect them in self::$sh_unfiltered_content_tokens.
Filter_Embedded_HTML_Objects::unregister() – Delete an existing registered pattern/replacement filter.
