In scripts that include test-lib-common.sh but not test-lib.sh
the die() implementation needs to be a bit different due to
fd redirection differences. test-lib-common.sh implements die()
only if it was not implemented already.
# This file contains common code to be used by both the regular
# (correctness) tests and the performance tests.
+# test-lib.sh defines die() which echoes to nonstandard fd where
+# output was redirected earlier in that file. If test-lib.sh is not
+# loaded, neither this redirection nor die() function were defined.
+#
+type die >/dev/null 2>&1 || die () { echo "$@" >&2; exit 1; }
+
find_notmuch_path ()
{
dir="$1"