Add regression test about reverse line feed to col(1)

etc/mtree/BSD.tests.dist

@@ -514,6 +514,8 @@
         ..
         cmp
         ..
+        col
+        ..
         comm
         ..
         cut

usr.bin/col/Makefile

@@ -1,6 +1,12 @@
 #	@(#)Makefile	8.1 (Berkeley) 6/6/93
 # $FreeBSD$
 
+.include <src.opts.mk>
+
 PROG=	col
 
+.if ${MK_TESTS} != "no"
+SUBDIR+=	tests
+.endif
+
 .include <bsd.prog.mk>

usr.bin/col/tests/Makefile

@@ -0,0 +1,11 @@
+# $FreeBSD$
+
+TESTSDIR=	${TESTSBASE}/usr.bin/col
+
+ATF_TESTS_SH=	col
+
+FILES=		rlf.in \
+		rlf2.in
+FILESDIR=	${TESTSDIR}
+
+.include <bsd.test.mk>

usr.bin/col/tests/col.sh

@@ -0,0 +1,39 @@
+# $FreeBSD$
+
+atf_test_case rlf
+
+rlf_head()
+{
+	atf_set "descr" "testing reverse line feed"
+}
+rlf_body()
+{
+	atf_check \
+		-o inline:"a b\n" \
+		-e empty \
+		-s exit:0 \
+		col < $(atf_get_srcdir)/rlf.in
+
+	atf_check \
+		-o inline:"a	b3\n" \
+		-e empty \
+		-s exit:0 \
+		col < $(atf_get_srcdir)/rlf2.in
+
+	atf_check \
+		-o inline:"a       b3\n" \
+		-e empty \
+		-s exit:0 \
+		col -x < $(atf_get_srcdir)/rlf2.in
+
+	atf_check \
+		-o inline:"a	b3\n" \
+		-e empty \
+		-s exit:0 \
+		col -p < $(atf_get_srcdir)/rlf2.in
+}
+
+atf_init_test_cases()
+{
+	atf_add_test_case rlf
+}

usr.bin/col/tests/rlf.in

@@ -0,0 +1,2 @@
+a
+  7b

usr.bin/col/tests/rlf2.in

@@ -0,0 +1,2 @@
+a
+	7b