Test for use of newline in regex's, this feature is used by most
configure scripts.
diff --git a/testsuite/sed/sed-regex-match-newline b/testsuite/sed/sed-regex-match-newline
new file mode 100644
index 0000000..1057e17
--- /dev/null
+++ b/testsuite/sed/sed-regex-match-newline
@@ -0,0 +1,10 @@
+# FEATURE: CONFIG_FEATURE_SED_EMBEDED_NEWLINE
+busybox sed -n 'N;/a\nb/p'>output <<EOF
+a
+b
+c
+EOF
+cmp -s output - <<EOF
+a
+b
+EOF