New esc_xml() function in WordPress 5.5

As part of the development for the new XML Sitemaps feature in WordPress 5.5, a new esc_xml() function has been added to coreCore Core is the set of software required to run WordPress. The Core Development Team builds WordPress. that filters a string cleaned and escaped for output in XML. This joins the existing set of functions like esc_html() and esc_js().

While all contents in XML sitemaps are already escaped using this new function, existing code in WordPress core can be updated to leverage it in future releases.

wp_kses_normalize_entities() has been updated accordingly to support this, and now can distinguish between HTMLHTML HyperText Markup Language. The semantic scripting language primarily used for outputting content in web browsers. and XML context.

Note: l10nL10n Localization, or the act of translating code into one's own language. Also see internationalization. Often written with an uppercase L so it is not confused with the capital letter i or the numeral 1. WordPress has a capable and dynamic group of polyglots who take WordPress to more than 70 different locales. helpers like esc_xml__() and esc_xml_e() are being proposed separately in #50551, and are not part of this releaseRelease A release is the distribution of the final version of an application. A software release may be either public or private and generally constitutes the initial or new generation of a new or upgraded application. A release is preceded by the distribution of alpha and then beta versions of the software..

#5-5, #dev-notes, #sitemaps, #xml-sitemaps