return "", false
		}
		var root string
		var err error
		if repl := Replacement(m); repl.Path != "" && repl.Version == "" {
			root = repl.Path
			if !filepath.IsAbs(root) {
				root = filepath.Join(replaceRelativeTo(), root)
			}
		} else if repl.Path != "" {
			root, err = modfetch.DownloadDir(ctx, repl)
		} else {
			root, err = modfetch.DownloadDir(ctx, m)
		}
		if err != nil {

// Otherwise, repr is used unprocessed as the type representation.
func (tr *TypeRepr) Set(repr string, fargs ...interface{}) {
	tr.Repr = repr
	tr.FormatArgs = fargs
}

// FinishType completes any outstanding type mapping work.
// In particular, it resolves incomplete pointer types.
func (c *typeConv) FinishType(pos token.Pos) {

}

func TestToValidUTF8(t *testing.T) {
	for _, tc := range toValidUTF8Tests {
		got := ToValidUTF8([]byte(tc.in), []byte(tc.repl))
		if !Equal(got, []byte(tc.out)) {
			t.Errorf("ToValidUTF8(%q, %q) = %q; want %q", tc.in, tc.repl, got, tc.out)
		}
	}
}

func TestTrimSpace(t *testing.T) { runStringTests(t, TrimSpace, "TrimSpace", trimSpaceTests) }

type RepeatTest struct {

	tg.grepStdout(`^bytes$`, "missing real bytes")
	tg.grepStdout(`^bytes \[bytes.test\]$`, "missing test copy of bytes")
	tg.grepStdout(`^testing \[bytes.test\]$`, "missing test copy of testing")
	tg.grepStdoutNot(`^testing$`, "unexpected real copy of testing")

	tg.run("list", "-test", "bytes")
	tg.grepStdout(`^bytes.test$`, "missing test main")
	tg.grepStdout(`^bytes$`, "missing real bytes")

                        ArtifactRepository repo = MavenRepositorySystem.buildArtifactRepository(
                                new org.apache.maven.model.DeploymentRepository(r));
                        repositorySystem.injectProxy(request.getRepositorySession(), List.of(repo));
                        repositorySystem.injectAuthentication(request.getRepositorySession(), List.of(repo));

                () -> buildPom("unique-repo-id/artifact-repo"),
                "Non-unique repository ids did not cause validation error");
    }

    /* MNG-4193 */
    @Test
    void testValidationErrorUponNonUniquePluginRepositoryId() throws Exception {
        assertThrows(
                ProjectBuildingException.class,
                () -> buildPom("unique-repo-id/plugin-repo"),

	}
	if dir, name := findAltConfig(base.Cwd()); dir != "" {
		rel, err := filepath.Rel(base.Cwd(), dir)
		if err != nil {
			rel = dir
		}
		cdCmd := ""
		if rel != "." {
			cdCmd = fmt.Sprintf("cd %s && ", rel)
		}
		base.Fatalf("go: cannot find main module, but found %s in %s\n\tto create a module there, run:\n\t%sgo mod init", name, dir, cdCmd)
	}

	// deleted by the clean command.
	path = pathf("%s/VERSION.cache", goroot)
	if isfile(path) {
		return chomp(readfile(path))
	}

	// Show a nicer error message if this isn't a Git repo.
	if !isGitRepo() {
		fatalf("FAILED: not a Git repo; must put a VERSION file in $GOROOT")
	}

	// Otherwise, use Git.
	//
	// Include 1.x base version, hash, and date in the version.
	//

		// Now examine the block again, handling things other than the
		// "begins at block start" lifetimes.
		zeroWidthPending := false
		prologComplete := false
		// expect to see values in pattern (apc)* (zerowidth|real)*
		for _, v := range b.Values {
			if blockPrologComplete(v) {
				prologComplete = true
			}
			slots := state.valueNames[v.ID]
			reg, _ := state.f.getHome(v.ID).(*Register)

			fn(i, "", r.Type)
			i++
		} else {
			for _, n := range r.Names {
				fn(i, n.Name, r.Type)
				i++
			}
		}
	}
}

func c(repr string, args ...interface{}) *TypeRepr {
	return &TypeRepr{repr, args}
}

// Map predeclared Go types to Type.
var goTypes = map[string]*Type{
	"bool":       {Size: 1, Align: 1, C: c("GoUint8")},