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-rw-r--r--tests/input-tty2
1 files changed, 2 insertions, 0 deletions
diff --git a/tests/input-tty b/tests/input-tty
index bba9eb794..95a3c37ca 100644
--- a/tests/input-tty
+++ b/tests/input-tty
@@ -1,8 +1,10 @@
# Require a controlling input `terminal'.
tty -s || have_input_tty=no
+test -t 1 || have_input_tty=no
if test "$have_input_tty" = no; then
echo "$0: This test must have a controlling input \`terminal'," 1>&2
echo " so it may not be run via \`batch', \`at', or \`rsh'." 1>&2
+ echo " On some systems, it may not even be run in the background." 1>&2
(exit 77; exit); exit
fi