Not only for accessibility reasons, websites should prefer using the lang attribute over xml:lang. CoreMedia now provides options, to handle this mapping for language tags within Markup with grammar CoreMedia Rich Text 1.0 in the CAE.

In addition to the mapping itself, the feature also comes with a configurable locale normalization, that, for example, transparently replaces so-called "grandfathered" language tags (another recommendation by accessibility guidelines). The default normalization is based on Locale.forLanguageTag(String) and as such, the behavior depends on your installed JRE.

Starting with CMCC 11.2310.1 this mapping and normalization will be enabled by default. To disable it, adapt BlueprintRichtextFiltersConfiguration.

CAE Adaptations

The new Markup filter com.coremedia.blueprint.cae.richtext.filter.LangAttributeFilter got added to the BlueprintRichtextFiltersConfiguration.

If you are using a custom cae-views.xml (as documented in CAE Developer Manual in section Rendering Markup within section Writing Templates) it may require to be adapted accordingly to benefit from this feature.

(CMS-23426)