Ihor Radchenko writes: > This does not look right. Did you try to export anything with this patch > applied? You are passing multiple string arguments to `format'. > > Finally, I think that we can document the new keyword in the manual. I've updated the patch so that it applies cleanly onto the latest main, and also fixed a few issues including the ones Ihor pointed out above. Let me know if there are any issues -- otherwise I'll apply it to main in the near future.