Merge branch 'jc/test-seq' into maint

Test fix.

* jc/test-seq:
  test-lib-functions.sh: rewrite test_seq without Perl
  test-lib-functions.sh: remove misleading comment on test_seq

Author: gitster

t/test-lib-functions.sh

@@ -718,28 +718,26 @@ test_cmp_rev () {
 	test_cmp expect.rev actual.rev
 }
 
-# Print a sequence of numbers or letters in increasing order.  This is
-# similar to GNU seq(1), but the latter might not be available
-# everywhere (and does not do letters).  It may be used like:
-#
-#	for i in $(test_seq 100)
-#	do
-#		for j in $(test_seq 10 20)
-#		do
-#			for k in $(test_seq a z)
-#			do
-#				echo $i-$j-$k
-#			done
-#		done
-#	done
+# Print a sequence of integers in increasing order, either with
+# two arguments (start and end):
+#
+#     test_seq 1 5 -- outputs 1 2 3 4 5 one line at a time
+#
+# or with one argument (end), in which case it starts counting
+# from 1.
 
 test_seq () {
 	case $# in
 	1)	set 1 "$@" ;;
 	2)	;;
 	*)	error "bug in the test script: not 1 or 2 parameters to test_seq" ;;
 	esac
-	perl -le 'print for $ARGV[0]..$ARGV[1]' -- "$@"
+	test_seq_counter__=$1
+	while test "$test_seq_counter__" -le "$2"
+	do
+		echo "$test_seq_counter__"
+		test_seq_counter__=$(( $test_seq_counter__ + 1 ))
+	done
 }
 
 # This function can be used to schedule some commands to be run