The commits for bug 126154 and bug 159923 have introduced the new attributes loext:word-spacing, loext:word-spacing-minimum and loext:word-spacing-maximum of the <style:paragraph-properties> element. These entries are missing in https://wiki.documentfoundation.org/Development/ODF_Implementer_Notes/List_of_LibreOffice_ODF_Extensions
To fix the missing word-spacing entries in your extensions list: Update Your Editor/IDE: Make sure it supports the word-spacing CSS property. Check Your Linter/Config: Update your linter or CSS preprocessor settings to include word-spacing. Manually Add Support: If using a CSS framework or plugin, ensure it includes word-spacing definitions. https://racinglimits.io
@Regina: many thanks for the bug report! I am attaching an incomplete list from my last LiboCon presentation about the loext: extensions in the hyphenation/line breaking area. It hasn't contained the word-spacing settings and a few newer ones, yet. All the loext: extensions are listed in https://git.libreoffice.org/core/+/refs/heads/master/schema/libreoffice/OpenDocument-v1.4+libreoffice-schema.rng, including the following ones over loext:word-spacing/word-spacing-minimum/word-spacing-maximum: – loext:hyphenation-keep-type, which is an extension to ODF 1.0 hyphenation-keep to cover all XSL/CSS4 attributes); – loext:hyphenation-keep-line, which is for MSO 2013, and MSO 2016 interoperability, where the algorithm for hyphenation-keep was changed to move hyphenated word instead of move hyphenated line – still supported both of them by the newest MSO; – loext:hyphenation-zone-always, loext:hyphenation-zone-column, loext:hyphenation-zone-page, loext:hyphenation-zone-spread: fine adjustment for hyphenation across, introduced by some DTP programs (see Affinity Publisher, a strong competitor of Adobe InDesign). In the next few weeks, I will analyze hyphenation related to DOCX (MS Word) word spacing, to know more about the possible requirements in this area. For example, maybe it will be a good idea to implement the more hyphenation or more desired word spacing de facto standard setting of DTP software, which can create better readability in a portable way. By the way, I've started a basic research in hyphenation, too, see the attached slides from my COOL's Day presentation. I'm highly interested in German hyphenation and typography, e.g. related to the compound words, or compounding, to refine/extend the recent loext:hyphenation-compound-remain-char-count, possible push-char-count?, adding to hyphenation across?, other improvements... (Fine details of German typography, like disabling/modifying ligatures, adding hair space automatically after the verb prefixes, are also on the plate, but likely they don't need ODF extension.)
Created attachment 201197 [details] loext: hyphenation settings (a slide from LiboCon 2024 presentation "Write Better! by László Németh)
Created attachment 201198 [details] research for loext: in the area of word spacing and hyphenation (slides from COOL Days presentation "Hyphenation Control Achieving Optimal Readability in Your Documents" by László Németh)