+# This is used to simplify checking of the return value
+# which is useful when ensuring a command fails as desired.
+# I.e., just doing `command ... &&fail=1` will not catch
+# a segfault in command for example. With this helper you
+# instead check an explicit exit code like
+# returns_ 1 command ... || fail
+returns_ () {
+ # Disable tracing so it doesn't interfere with stderr of the wrapped command
+ { set +x; } 2>/dev/null
+
+ local exp_exit="$1"
+ shift
+ "$@"
+ test $? -eq $exp_exit && ret_=0 || ret_=1
+
+ if test "$VERBOSE" = yes && test "$gl_set_x_corrupts_stderr_" = false; then
+ set -x
+ fi
+ { return $ret_; } 2>/dev/null
+}
+