Hi Cédric,
Thanks for writing and sorry that you've experienced such a delay. Such occurrences are unfortunately rather common right now, though we're working on improving the situation.
Stéphane Wirtel self-assigned that PR to himself a couple of months ago, but indeed hasn't followed it up after his requested changes were apparently addressed, despite a couple of "pings".
The experts index[1] lists Marc-Andre Lemburg as the expert for the locale module, so perhaps he'd be interested in taking a look.
I've CC-ed both
Stéphane and
Marc-Andre.