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  • filter

    jetpack_likes_default_post_types

    Filters the default post types that show Likes when no sharing settings have been saved. Only applies when the site has never explicitly configured Likes visibility. Once a site owner saves sharing settings, those are used instead.

  • filter

    jetpack_sitemap_flat_master_index

    Whether the master sitemap lists each individual sitemap file directly. A sitemap index file may not list other sitemap index files, and Google Search Console reports the nested layout as “Nested indexing”. Listing the files directly is what fixes that. Off by default so the flat layout can be rolled out a site at a time. The default is expected to flip once it has been verified in production, at which point this filter goes away.

  • filter

    jetpack_button_default_element

    Filter the HTML element the Button block falls back to when the block itself does not specify one. Jetpack Forms uses this to default its submit button to `button` while a form renders, since an `a` inside a form can never submit it. Values outside ‘a’, ‘button’ and ‘input’ are ignored by the render callback.

  • action

    jetpack_reprint_export_event

    Fires when a Reprint export request ends in an export or an error. A request the handler ignores fires nothing, and no event carries the secret or the signature. An export with no secret_rotated or window_opened event before it used a secret this site did not create.

  • filter

    jetpack_skip_photon_domain

    Filter whether the Tiled Gallery and Image Compare blocks should skip the external Photon (i0.wp.com) domain and build image URLs on the site’s own host instead. Defaults to true on VIP sites only, and false everywhere else. Changing this changes the markup Tiled Gallery saves, because it bakes the image URLs into its save() output. Galleries saved under the previous value stay valid — the block ships a deprecation for each image host, so flipping this either way is safe — and they are re-serialized with the new URLs the next time they are saved. Image Compare only uses this for its editor previews; its save() writes the attachment URLs through untouched, so its saved markup does not depend on this value.

  • action

    jetpack_email_editor_error

    Fires when a filter serving the email editor raises. This plugin does not record the exception itself — the message can carry internals, so where it is safe to write it is the host’s call rather than ours. Hook this to log it.

  • filter

    jetpack_email_editor_save_design

    Filters the result of saving the newsletter email design. The editor sends the whole styles document rather than a patch, so implementations replace rather than merge. Implementations should report on a read-back of the stored design rather than echoing the submitted one: sanitizing drops properties outside the theme.json schema, so a save can succeed into invisibility, and the screen has to be able to tell a person their edit did not survive. Internal, and not settled, for the same reason as the read above: expect the shape of the design document and of what is returned to change while the editor is being built.