Test for use of newline in regex's, this feature is used by most

configure scripts.

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