[css-fonts-4] ffs & fvs computed value sorted on code unit, w3c#8450

Author: svgeesus

css-fonts-4/Overview.bs

@@ -6151,10 +6151,14 @@ If the value is omitted, a value of 1 is assumed.
 of font-feature-settings is a map,
 so any duplicates in the specified value
 must not be preserved.
-If the same axis name appears more than once,
+If the same feature tag appears more than once,
 the value associated with the last appearance supersedes
 any previous value for that axis.</p>
 
+<p id="ffs-sorted">The computed value contains the de-duplicated feature tags,
+	sorted in ascending order by [=code unit=].
+</p>
+
 <div class="example" id="ex-font-feature-settings-map">
 <pre>
 font-feature-settings: "sinf" 1;       /* sinf=1 enable Scientific Inferiors */
@@ -6759,6 +6763,9 @@ the opposite direction to CSS.
 
 If the same axis name appears more than once, the value associated with the last appearance supersedes any previous value for that axis. This deduplication is observable by accessing the computed value of this property.
 
+<p id="fvs-sorted">The computed value contains the de-duplicated axis names,
+sorted in ascending order by [=code unit=].</p>
+
 Although specifically defined for OpenType / TrueType variations,
 variation axes for other modern font formats that support font variations
 might be added in the future.