exslt regexp functions not available

[MartijnR]

I have been making use of various exslt functions (xmlns:str="http://exslt.org/strings", xmlns:dyn="http://exslt.org/dynamic"). This works fine.

However, I don't seem to be able to get regexp functions working with xmlns:regexp="http://exslt.org/regular-expressions". I'm trying to figure where (in the code) I can check which exslt extensions are supported and which aren't. Could you point me in the right direction please?

[epotocko]

I believe this is due to the regexp functions not being implemented in libexslt. https://gitlab.gnome.org/GNOME/libxslt/-/tree/master/libexslt