add a test for compile option firstline

src/tests/compile_opts.vtc

@@ -408,3 +408,57 @@ client c1 {
 	expect resp.http.r3 == "true"
 	expect resp.http.r4 == "false"
 } -run
+
+# XXX test for dupnames will require capturing named refs
+
+# extended option is tested in compile.vtc and match.vtc
+
+# firstline
+varnish v1 -vcl {
+	import pcre2 from "${vmod_topbuild}/src/.libs/libvmod_pcre2.so";
+	backend b { .host = "${bad_ip}"; }
+
+	sub vcl_init {
+		new r1 = pcre2.regex({"line
+break"});
+		new r2 = pcre2.regex(firstline=true, pattern={"line
+break"});
+		new r3 = pcre2.regex(firstline=true, multiline=true,
+		    		     pattern={"line
+break"});
+	}
+
+	sub vcl_recv {
+		return(synth(200));
+	}
+
+	sub vcl_synth {
+		set resp.http.r1-1 = r1.match({"line
+break"});
+		set resp.http.r2-1 = r2.match({"line
+break"});
+		set resp.http.r3-1 = r3.match({"line
+break"});
+		set resp.http.r1-2 = r1.match({"line one
+this is a line
+break in the second line"});
+		set resp.http.r2-2 = r2.match({"line one
+this is a line
+break in the second line"});
+		set resp.http.r3-2 = r3.match({"line one
+this is a line
+break in the second line"});
+	}
+}
+
+client c1 {
+	txreq
+	rxresp
+	expect resp.status == "200"
+	expect resp.http.r1-1 == "true"
+	expect resp.http.r1-2 == "true"
+	expect resp.http.r2-1 == "true"
+	expect resp.http.r2-2 == "false"
+	expect resp.http.r3-1 == "true"
+	expect resp.http.r3-2 == "false"
+} -run