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diff --git a/testsuite/sort.tests b/testsuite/sort.tests
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+#!/bin/bash
+
+# SUSv3 compliant sort tests.
+# Copyright 2005 by Rob Landley <rob@landley.net>
+# Licensed under GPL v2, see file LICENSE for details.
+
+. testing.sh
+
+# The basic tests.  These should work even with the small busybox.
+
+testing "sort" "sort input" "a\nb\nc\n" "c\na\nb\n" ""
+testing "sort #2" "sort input" "010\n1\n3\n" "3\n1\n010\n" ""
+testing "sort stdin" "sort" "a\nb\nc\n" "" "b\na\nc\n"
+testing "sort numeric" "sort -n input" "1\n3\n010\n" "3\n1\n010\n" ""
+testing "sort reverse" "sort -r input" "wook\nwalrus\npoint\npabst\naargh\n" \
+        "point\nwook\npabst\naargh\nwalrus\n" ""
+
+# These tests require the full option set.
+
+optional FEATURE_SORT_BIG
+# Longish chunk of data re-used by the next few tests
+
+data="42        1       3       woot
+42      1       010     zoology
+egg     1       2       papyrus
+7       3       42      soup
+999     3       0       algebra
+"
+
+# Sorting with keys
+
+testing "sort one key" "sort -k4,4 input" \
+"999    3       0       algebra
+egg     1       2       papyrus
+7       3       42      soup
+42      1       3       woot
+42      1       010     zoology
+" "$data" ""
+
+testing "sort key range with numeric option" "sort -k2,3n input" \
+"42     1       010     zoology
+42      1       3       woot
+egg     1       2       papyrus
+7       3       42      soup
+999     3       0       algebra
+" "$data" ""
+
+# Busybox is definitely doing this one wrong just now.  FIXME
+
+testing "sort key range with numeric option and global reverse" \
+"sort -k2,3n -r input" \
+"egg    1       2       papyrus
+42      1       3       woot
+42      1       010     zoology
+999     3       0       algebra
+7       3       42      soup
+" "$data" ""
+
+#
+
+testing "sort key range with multiple options" "sort -k2,3rn input" \
+"7      3       42      soup
+999     3       0       algebra
+42      1       010     zoology
+42      1       3       woot
+egg     1       2       papyrus
+" "$data" ""
+
+testing "sort key doesn't strip leading blanks, disables fallback global sort" \
+"sort -n -k2 -t ' '" " a \n 1 \n 2 \n" "" " 2 \n 1 \n a \n"
+
+testing "sort key edge case with -t" "sort -n -k4 -t/" \
+"/usr/lib/finish-install.d/1
+/usr/lib/finish-install.d/4
+/usr/lib/prebaseconfig.d/2
+/usr/lib/prebaseconfig.d/6
+" "" "/usr/lib/finish-install.d/1
+/usr/lib/prebaseconfig.d/2
+/usr/lib/finish-install.d/4
+/usr/lib/prebaseconfig.d/6
+"
+
+exit $FAILCOUNT