Add missing bits for string version of "now"

git-svn-id: http://www.varnish-cache.org/svn/trunk/varnish-cache@4788 d4fa192b-c00b-0410-8231-f00ffab90ce4

bin/varnishtest/tests/b00030.vtc

 # $Id$
+# We can't test the value of x-timestamp, but this should fail
+# if we can't set the header at all.
 
 test "Test formatting of timestamps"
 
@@ -11,6 +13,9 @@ varnish v1 -vcl+backend {
 	sub vcl_recv {
 		error 200 req.grace;
 	}
+	sub vcl_error {
+		set obj.http.x-timestamp = now;
+	}
 } -start
 
 client c1 {

lib/libvcl/vcc_string.c

@@ -153,6 +153,11 @@ vcc_StringVal(struct tokenlist *tl)
 		return (vcc_regsub(tl, 0));
 	if (tl->t->tok == ID && vcc_IdIs(tl->t, "regsuball"))
 		return (vcc_regsub(tl, 1));
+	if (tl->t->tok == ID && vcc_IdIs(tl->t, "now")) {
+		Fb(tl, 0, "VRT_time_string(sp, VRT_r_now(sp))");
+		vcc_NextToken(tl);
+		return 1;
+	}
 	if (tl->t->tok == VAR) {
 		vp = vcc_FindVar(tl, tl->t, vcc_vars, 0, "read");
 		if (tl->err)