S. Veyrié

Hello @ennru I may look to implement it for my own purpose, and then try to do a PR. Would you have a pointer to another piece of alpakka where...

@ennru I did implement it ([see commit](https://github.com/turb/alpakka/commit/5bc35418506c523fcd8878d6596426e793c4942e), but I am now unsure if it has to be merged, since 1) my original problem lies elsewhere and 2) re-reading the doc...

My mistake: git-deliver version was out to date.

Note I still have this error from time to time. It seems to be specific to a very precise pattern. Workaround: change (even slightly) the free space.

It must be that, I forgot that updating git-deliver does not update previous presets. I have to remind myself to overwrite my presets on each repo before next deliver. Maybe...