Hi Pierre, there isn't any way for a script to determine the length of a curve right now, sorry.

> Maybe the "informations box" is in project for version 2 ?

Yup, I'm not sure if this one will be in the properties box or as a command in a separate "Analyze" toolbox, but I definitely want to add some analysis commands such as determine length of a curve, volume of a solid, etc... for v2.

- Michael