tg export: Clarify usage

[topgit.git] / tg-mail.sh

diff --git a/tg-mail.sh b/tg-mail.sh
index 24e5f67b2742b8edf6fd6213f58d6546a27e013c..dd50004a96127f9b6a26a93d1c47503c8aa1882d 100644 (file)
--- a/tg-mail.sh
+++ b/tg-mail.sh
@@ -4,6 +4,7 @@
 
 name=
 send_email_args=
+in_reply_to=
 
 
 ## Parse options
@@ -13,8 +14,10 @@ while [ -n "$1" ]; do
        case "$arg" in
        -s)
                send_email_args="$1"; shift;;
+       -r)
+               in_reply_to="$1"; shift;;
        -*)
-               echo "Usage: tg [...] mail [-s SEND_EMAIL_ARGS] [NAME]" >&2
+               echo "Usage: tg [...] mail [-s SEND_EMAIL_ARGS] [-r REFERENCE_MSGID] [NAME]" >&2
                exit 1;;
        *)
                [ -z "$name" ] || die "name already specified ($name)"
@@ -26,13 +29,16 @@ done
 base_rev="$(git rev-parse --short --verify "refs/top-bases/$name" 2>/dev/null)" ||
        die "not a TopGit-controlled branch"
 
+if [ -n "$in_reply_to" ]; then
+       send_email_args="$send_email_args --in-reply-to=$in_reply_to"
+fi
+
 
 patchfile="$(mktemp -t tg-mail.XXXXXX)"
 
-$tg patch $name >"$patchfile"
+$tg patch "$name" >"$patchfile"
 
-hlines=$(grep -n -m 1 '^---' "$patchfile" | sed 's/:---//')
-header=$(head -n $(($hlines - 1)) "$patchfile")
+header="$(sed -e '/^$/,$d' "$patchfile")"