https://github.com/w3c/dapt/pull/331
Permit empty `daptm:langSrc` and make it the default by nigelmegitt · Pull Request #331 · w3c/dapt
github.com
After discussion, they decided to keep the default value as empty, but change the meaning of empty from non-linguistic to linguistically indeterminate (the same as `und`). We can discuss.
~xfq
