Maybe we could also document that tag files generated on the command-line using geany are guaranteed to be only valid for the Geany release using which they were generated.
In that case how are we going to handle [these](https://github.com/geany/geany/tree/master/data/tags), because that is saying they should be re-created every the build, and [thses](https://wiki.geany.org/tags/start) are also invalidated, or at least need a Geany version added to the Wiki.