I have setup PPA ppa:geany-dev/ppa and update to 1.30.1. Everything is ok, and plugin pair tag highlighter works well, for sure you were right.
A last question. I seek the web site, for download pages to find a list of version, unstable, stable, testing. I did not find this page, where could I know which version is the stable one ? Where can I find this information ? Is the ppa:geany-dev/ppa version always the stable one ?
Thanks.