Olaf Hering [off-list ref] writes:
I think send-email should understand all options of format-patch.
I actually think it was a mistake to allow send-email drive
format-patch ;-).
At least for '-v n' this fails, one has to type '--reroll-count n' as a
workaround with git version 2.13.3:
I wonder if "-v2" would work here, though. It seems that the hack
send-email uses to "understand" format-patch options (i.e. the
subroutine is_format_patch_arg) is not prepared to take an option
with parameter.