builder: xtitle check stderr, so it would work in capture blocks too

diff --git a/builder.sh b/builder.sh
index df16b001e04707e85086e06bbe6a486f376120d5..840a3699afe082a238d4e9c1bc65f8d33b91a6a4 100755 (executable)
--- a/builder.sh
+++ b/builder.sh
@@ -554,7 +554,7 @@ depspecname() {
 }
 
 update_shell_title() {
-       [ -t 1 ] || return
+       [ -t 2 ] || return
        local len=${COLUMNS:-80}
        local msg="$(echo "$*" | cut -c-$len)"