view contrib/plan9/9mail @ 51691:3cb2b5b6626f

hghave: update detection of black version to a newer minimum

The CI has moved to version 23.3.0, which is the last one to support 3.7 at
runtime.

#!/bin/rc
# 9mail - Mercurial email wrapper for upas/marshal

fn usage {
	echo >[1=2] usage: mercurial/9mail -f from to [cc]
	exit usage
}

from=()
cc=()
to=()

switch($1){
case -f
	from=$2
case *
	usage
}

to=($3)
if(~ $#* 4)
	cc=(-C $4)

upasname=$from
upas/marshal $cc $to