use (?m) when looking for an end-of-line

Without it, it only matches the end of the entire input.

Fixes #28, again.

xurls.go

@@ -76,7 +76,7 @@ func relaxedExp() string {
 	knownTLDs := anyOf(append(TLDs, PseudoTLDs...)...)
 	site := domain + `(?i)(` + punycode + `|` + knownTLDs + `)(?-i)`
 	hostName := `(` + site + `|` + ipAddr + `)`
-	webURL := hostName + port + `(/|/` + pathCont + `?|\b|$)`
+	webURL := hostName + port + `(/|/` + pathCont + `?|\b|(?m)$)`
 	return strictExp() + `|` + webURL
 }
 

xurls_test.go

@@ -29,10 +29,13 @@ func wantStr(in string, want interface{}) string {
 func doTest(t *testing.T, name string, re *regexp.Regexp, cases []testCase) {
 	for i, c := range cases {
 		t.Run(fmt.Sprintf("%s/%03d", name, i), func(t *testing.T) {
-			got := re.FindString(c.in)
 			want := wantStr(c.in, c.want)
-			if got != want {
-				t.Errorf(`%s.FindString("%s") got "%s", want "%s"`, name, c.in, got, want)
+			for _, surround := range []string{"", "\n"} {
+				in := surround + c.in + surround
+				got := re.FindString(in)
+				if got != want {
+					t.Errorf(`FindString(%q) got %q, want %q`, in, got, want)
+				}
 			}
 		})
 	}