Fix legacy URL redirects (#3100)

integrations/links_test.go

@@ -48,6 +48,8 @@ func TestRedirectsNoLogin(t *testing.T) {
 	var redirects = map[string]string{
 		"/user2/repo1/commits/master":                "/user2/repo1/commits/branch/master",
 		"/user2/repo1/src/master":                    "/user2/repo1/src/branch/master",
+		"/user2/repo1/src/master/file.txt":           "/user2/repo1/src/branch/master/file.txt",
+		"/user2/repo1/src/master/directory/file.txt": "/user2/repo1/src/branch/master/directory/file.txt",
 	}
 	for link, redirectLink := range redirects {
 		req := NewRequest(t, "GET", link)

modules/context/repo.go

@@ -618,7 +618,11 @@ func RepoRefByType(refType RepoRefType) macaron.Handler {
 
 			if refType == RepoRefLegacy {
 				// redirect from old URL scheme to new URL scheme
-				ctx.Redirect(path.Join(setting.AppSubURL, strings.TrimSuffix(ctx.Req.URL.String(), ctx.Params("*")), ctx.Repo.BranchNameSubURL()))
+				ctx.Redirect(path.Join(
+					setting.AppSubURL,
+					strings.TrimSuffix(ctx.Req.URL.String(), ctx.Params("*")),
+					ctx.Repo.BranchNameSubURL(),
+					ctx.Repo.TreePath))
 				return
 			}
 		}