Hi Sylvain,
I just did a simple change of language on the latest (0.92.1) Inkscape app and, even though it's impressive the application supports so many different languages, it needs to be restarted to do so. Which would make the work of a single person capturing the same Inkscape window in a lot of different languages longer and a little bit tedious.
I went to Edit > Preferences (or Ctrl + Shift + P) > Interface > Selected my language of choice...
I have no idea of how much engineering it would demand -- and if this is even possible -- but I believe that for one single person to capture the same screenshot -- for our manual and documentation purposes -- multiple times(for the different languages) it would be better if it could change language of the UI without restarting the application and if we could do so using a few keyboard shortcuts. Maybe I'm asking too much here.
Since the Inkscape already has a great number of languages but it needs to be restarted to show them, maybe we would need to define a standard Operating System (at least in the case of Windows and macOS machines) for consistency.
This seems far more complicated than I have anticipated before. I believe that having, initially, the images in English would be ideal.
Another challenge that came to my mind is: IF we happen to make a new official documentation manual for the Inkscape online (more or less on the "Read the docs" style) how would we make it?
1. Would we change the entire manual for each major Inkscape release? (0.93.x, 0.94.x...)