contrib/plan9/9mail

templatefilters: rename commonprefix to commondir

Two reasons:

  * It makes it clearer that it's not a generic common string
    prefix (e.g. commonprefix(["bar", "baz"]) is not "ba", but "")

  * If we ever want a filter for generic common string prefix,
    then the name is now available for that.

"commondir" does not describe the prefix-ness, however. I'm happy to
rename it "commondirprefix" or "commonprefixdir" if others prefer.

Differential Revision: https://phab.mercurial-scm.org/D3731

#!/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