diff --git a/go.mod b/go.mod
index 259e7cd..50f71cd 100644
--- a/go.mod
+++ b/go.mod
@@ -2,9 +2,9 @@ module github.com/Abirdcfly/dupword
 
 go 1.20
 
-require golang.org/x/tools v0.21.0
+require golang.org/x/tools v0.22.0
 
 require (
-	golang.org/x/mod v0.17.0 // indirect
+	golang.org/x/mod v0.18.0 // indirect
 	golang.org/x/sync v0.7.0 // indirect
 )
diff --git a/go.sum b/go.sum
index 05680b3..16f2f69 100644
--- a/go.sum
+++ b/go.sum
@@ -1,6 +1,6 @@
-golang.org/x/mod v0.17.0 h1:zY54UmvipHiNd+pm+m0x9KhZ9hl1/7QNMyxXbc6ICqA=
-golang.org/x/mod v0.17.0/go.mod h1:hTbmBsO62+eylJbnUtE2MGJUyE7QWk4xUqPFrRgJ+7c=
+golang.org/x/mod v0.18.0 h1:5+9lSbEzPSdWkH32vYPBwEpX8KwDbM52Ud9xBUvNlb0=
+golang.org/x/mod v0.18.0/go.mod h1:hTbmBsO62+eylJbnUtE2MGJUyE7QWk4xUqPFrRgJ+7c=
 golang.org/x/sync v0.7.0 h1:YsImfSBoP9QPYL0xyKJPq0gcaJdG3rInoqxTWbfQu9M=
 golang.org/x/sync v0.7.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
-golang.org/x/tools v0.21.0 h1:qc0xYgIbsSDt9EyWz05J5wfa7LOVW0YTLOXrqdLAWIw=
-golang.org/x/tools v0.21.0/go.mod h1:aiJjzUbINMkxbQROHiO6hDPo2LHcIPhhQsa9DLh0yGk=
+golang.org/x/tools v0.22.0 h1:gqSGLZqv+AI9lIQzniJ0nZDRG5GBPsSi+DRNHWNz6yA=
+golang.org/x/tools v0.22.0/go.mod h1:aCwcsjqvq7Yqt6TNyX7QMU2enbQ/Gt0bo6krSeEri+c=
diff --git a/vendor/golang.org/x/mod/modfile/rule.go b/vendor/golang.org/x/mod/modfile/rule.go
index 0e7b7e2..66dcaf9 100644
--- a/vendor/golang.org/x/mod/modfile/rule.go
+++ b/vendor/golang.org/x/mod/modfile/rule.go
@@ -38,6 +38,7 @@ type File struct {
 	Module    *Module
 	Go        *Go
 	Toolchain *Toolchain
+	Godebug   []*Godebug
 	Require   []*Require
 	Exclude   []*Exclude
 	Replace   []*Replace
@@ -65,6 +66,13 @@ type Toolchain struct {
 	Syntax *Line
 }
 
+// A Godebug is a single godebug key=value statement.
+type Godebug struct {
+	Key    string
+	Value  string
+	Syntax *Line
+}
+
 // An Exclude is a single exclude statement.
 type Exclude struct {
 	Mod    module.Version
@@ -289,7 +297,7 @@ func parseToFile(file string, data []byte, fix VersionFixer, strict bool) (parse
 					})
 				}
 				continue
-			case "module", "require", "exclude", "replace", "retract":
+			case "module", "godebug", "require", "exclude", "replace", "retract":
 				for _, l := range x.Line {
 					f.add(&errs, x, l, x.Token[0], l.Token, fix, strict)
 				}
@@ -308,7 +316,9 @@ var laxGoVersionRE = lazyregexp.New(`^v?(([1-9][0-9]*)\.(0|[1-9][0-9]*))([^0-9].
 
 // Toolchains must be named beginning with `go1`,
 // like "go1.20.3" or "go1.20.3-gccgo". As a special case, "default" is also permitted.
-// TODO(samthanawalla): Replace regex with https://pkg.go.dev/go/version#IsValid in 1.23+
+// Note that this regexp is a much looser condition than go/version.IsValid,
+// for forward compatibility.
+// (This code has to be work to identify new toolchains even if we tweak the syntax in the future.)
 var ToolchainRE = lazyregexp.New(`^default$|^go1($|\.)`)
 
 func (f *File) add(errs *ErrorList, block *LineBlock, line *Line, verb string, args []string, fix VersionFixer, strict bool) {
@@ -384,7 +394,7 @@ func (f *File) add(errs *ErrorList, block *LineBlock, line *Line, verb string, a
 		if len(args) != 1 {
 			errorf("toolchain directive expects exactly one argument")
 			return
-		} else if strict && !ToolchainRE.MatchString(args[0]) {
+		} else if !ToolchainRE.MatchString(args[0]) {
 			errorf("invalid toolchain version '%s': must match format go1.23.0 or default", args[0])
 			return
 		}
@@ -412,6 +422,22 @@ func (f *File) add(errs *ErrorList, block *LineBlock, line *Line, verb string, a
 		}
 		f.Module.Mod = module.Version{Path: s}
 
+	case "godebug":
+		if len(args) != 1 || strings.ContainsAny(args[0], "\"`',") {
+			errorf("usage: godebug key=value")
+			return
+		}
+		key, value, ok := strings.Cut(args[0], "=")
+		if !ok {
+			errorf("usage: godebug key=value")
+			return
+		}
+		f.Godebug = append(f.Godebug, &Godebug{
+			Key:    key,
+			Value:  value,
+			Syntax: line,
+		})
+
 	case "require", "exclude":
 		if len(args) != 2 {
 			errorf("usage: %s module/path v1.2.3", verb)
@@ -654,6 +680,22 @@ func (f *WorkFile) add(errs *ErrorList, line *Line, verb string, args []string,
 		f.Toolchain = &Toolchain{Syntax: line}
 		f.Toolchain.Name = args[0]
 
+	case "godebug":
+		if len(args) != 1 || strings.ContainsAny(args[0], "\"`',") {
+			errorf("usage: godebug key=value")
+			return
+		}
+		key, value, ok := strings.Cut(args[0], "=")
+		if !ok {
+			errorf("usage: godebug key=value")
+			return
+		}
+		f.Godebug = append(f.Godebug, &Godebug{
+			Key:    key,
+			Value:  value,
+			Syntax: line,
+		})
+
 	case "use":
 		if len(args) != 1 {
 			errorf("usage: %s local/dir", verb)
@@ -929,6 +971,15 @@ func (f *File) Format() ([]byte, error) {
 // Cleanup cleans out all the cleared entries.
 func (f *File) Cleanup() {
 	w := 0
+	for _, g := range f.Godebug {
+		if g.Key != "" {
+			f.Godebug[w] = g
+			w++
+		}
+	}
+	f.Godebug = f.Godebug[:w]
+
+	w = 0
 	for _, r := range f.Require {
 		if r.Mod.Path != "" {
 			f.Require[w] = r
@@ -1027,6 +1078,45 @@ func (f *File) AddToolchainStmt(name string) error {
 	return nil
 }
 
+// AddGodebug sets the first godebug line for key to value,
+// preserving any existing comments for that line and removing all
+// other godebug lines for key.
+//
+// If no line currently exists for key, AddGodebug adds a new line
+// at the end of the last godebug block.
+func (f *File) AddGodebug(key, value string) error {
+	need := true
+	for _, g := range f.Godebug {
+		if g.Key == key {
+			if need {
+				g.Value = value
+				f.Syntax.updateLine(g.Syntax, "godebug", key+"="+value)
+				need = false
+			} else {
+				g.Syntax.markRemoved()
+				*g = Godebug{}
+			}
+		}
+	}
+
+	if need {
+		f.addNewGodebug(key, value)
+	}
+	return nil
+}
+
+// addNewGodebug adds a new godebug key=value line at the end
+// of the last godebug block, regardless of any existing godebug lines for key.
+func (f *File) addNewGodebug(key, value string) {
+	line := f.Syntax.addLine(nil, "godebug", key+"="+value)
+	g := &Godebug{
+		Key:    key,
+		Value:  value,
+		Syntax: line,
+	}
+	f.Godebug = append(f.Godebug, g)
+}
+
 // AddRequire sets the first require line for path to version vers,
 // preserving any existing comments for that line and removing all
 // other lines for path.
@@ -1334,6 +1424,16 @@ func (f *File) SetRequireSeparateIndirect(req []*Require) {
 	f.SortBlocks()
 }
 
+func (f *File) DropGodebug(key string) error {
+	for _, g := range f.Godebug {
+		if g.Key == key {
+			g.Syntax.markRemoved()
+			*g = Godebug{}
+		}
+	}
+	return nil
+}
+
 func (f *File) DropRequire(path string) error {
 	for _, r := range f.Require {
 		if r.Mod.Path == path {
diff --git a/vendor/golang.org/x/mod/modfile/work.go b/vendor/golang.org/x/mod/modfile/work.go
index d7b9937..8f54897 100644
--- a/vendor/golang.org/x/mod/modfile/work.go
+++ b/vendor/golang.org/x/mod/modfile/work.go
@@ -14,6 +14,7 @@ import (
 type WorkFile struct {
 	Go        *Go
 	Toolchain *Toolchain
+	Godebug   []*Godebug
 	Use       []*Use
 	Replace   []*Replace
 
@@ -68,7 +69,7 @@ func ParseWork(file string, data []byte, fix VersionFixer) (*WorkFile, error) {
 					Err:      fmt.Errorf("unknown block type: %s", strings.Join(x.Token, " ")),
 				})
 				continue
-			case "use", "replace":
+			case "godebug", "use", "replace":
 				for _, l := range x.Line {
 					f.add(&errs, l, x.Token[0], l.Token, fix)
 				}
@@ -184,6 +185,55 @@ func (f *WorkFile) DropToolchainStmt() {
 	}
 }
 
+// AddGodebug sets the first godebug line for key to value,
+// preserving any existing comments for that line and removing all
+// other godebug lines for key.
+//
+// If no line currently exists for key, AddGodebug adds a new line
+// at the end of the last godebug block.
+func (f *WorkFile) AddGodebug(key, value string) error {
+	need := true
+	for _, g := range f.Godebug {
+		if g.Key == key {
+			if need {
+				g.Value = value
+				f.Syntax.updateLine(g.Syntax, "godebug", key+"="+value)
+				need = false
+			} else {
+				g.Syntax.markRemoved()
+				*g = Godebug{}
+			}
+		}
+	}
+
+	if need {
+		f.addNewGodebug(key, value)
+	}
+	return nil
+}
+
+// addNewGodebug adds a new godebug key=value line at the end
+// of the last godebug block, regardless of any existing godebug lines for key.
+func (f *WorkFile) addNewGodebug(key, value string) {
+	line := f.Syntax.addLine(nil, "godebug", key+"="+value)
+	g := &Godebug{
+		Key:    key,
+		Value:  value,
+		Syntax: line,
+	}
+	f.Godebug = append(f.Godebug, g)
+}
+
+func (f *WorkFile) DropGodebug(key string) error {
+	for _, g := range f.Godebug {
+		if g.Key == key {
+			g.Syntax.markRemoved()
+			*g = Godebug{}
+		}
+	}
+	return nil
+}
+
 func (f *WorkFile) AddUse(diskPath, modulePath string) error {
 	need := true
 	for _, d := range f.Use {
diff --git a/vendor/golang.org/x/mod/module/module.go b/vendor/golang.org/x/mod/module/module.go
index 2a364b2..cac1a89 100644
--- a/vendor/golang.org/x/mod/module/module.go
+++ b/vendor/golang.org/x/mod/module/module.go
@@ -506,6 +506,7 @@ var badWindowsNames = []string{
 	"PRN",
 	"AUX",
 	"NUL",
+	"COM0",
 	"COM1",
 	"COM2",
 	"COM3",
@@ -515,6 +516,7 @@ var badWindowsNames = []string{
 	"COM7",
 	"COM8",
 	"COM9",
+	"LPT0",
 	"LPT1",
 	"LPT2",
 	"LPT3",
diff --git a/vendor/golang.org/x/tools/go/analysis/analysis.go b/vendor/golang.org/x/tools/go/analysis/analysis.go
index 5211773..ad27c27 100644
--- a/vendor/golang.org/x/tools/go/analysis/analysis.go
+++ b/vendor/golang.org/x/tools/go/analysis/analysis.go
@@ -91,7 +91,7 @@ type Pass struct {
 	Analyzer *Analyzer // the identity of the current analyzer
 
 	// syntax and type information
-	Fset         *token.FileSet // file position information
+	Fset         *token.FileSet // file position information; Run may add new files
 	Files        []*ast.File    // the abstract syntax tree of each file
 	OtherFiles   []string       // names of non-Go files of this package
 	IgnoredFiles []string       // names of ignored source files in this package
diff --git a/vendor/golang.org/x/tools/go/analysis/diagnostic.go b/vendor/golang.org/x/tools/go/analysis/diagnostic.go
index c638f27..4eb9059 100644
--- a/vendor/golang.org/x/tools/go/analysis/diagnostic.go
+++ b/vendor/golang.org/x/tools/go/analysis/diagnostic.go
@@ -12,7 +12,8 @@ import "go/token"
 // which should be a constant, may be used to classify them.
 // It is primarily intended to make it easy to look up documentation.
 //
-// If End is provided, the diagnostic is specified to apply to the range between
+// All Pos values are interpreted relative to Pass.Fset. If End is
+// provided, the diagnostic is specified to apply to the range between
 // Pos and End.
 type Diagnostic struct {
 	Pos      token.Pos
diff --git a/vendor/golang.org/x/tools/go/internal/packagesdriver/sizes.go b/vendor/golang.org/x/tools/go/internal/packagesdriver/sizes.go
index 333676b..c6e7c0d 100644
--- a/vendor/golang.org/x/tools/go/internal/packagesdriver/sizes.go
+++ b/vendor/golang.org/x/tools/go/internal/packagesdriver/sizes.go
@@ -13,6 +13,7 @@ import (
 	"golang.org/x/tools/internal/gocommand"
 )
 
+// TODO(adonovan): move back into go/packages.
 func GetSizesForArgsGolist(ctx context.Context, inv gocommand.Invocation, gocmdRunner *gocommand.Runner) (string, string, error) {
 	inv.Verb = "list"
 	inv.Args = []string{"-f", "{{context.GOARCH}} {{context.Compiler}}", "--", "unsafe"}
diff --git a/vendor/golang.org/x/tools/go/packages/doc.go b/vendor/golang.org/x/tools/go/packages/doc.go
index a8d7b06..3531ac8 100644
--- a/vendor/golang.org/x/tools/go/packages/doc.go
+++ b/vendor/golang.org/x/tools/go/packages/doc.go
@@ -198,14 +198,6 @@ Instead, ssadump no longer requests the runtime package,
 but seeks it among the dependencies of the user-specified packages,
 and emits an error if it is not found.
 
-Overlays: The Overlay field in the Config allows providing alternate contents
-for Go source files, by providing a mapping from file path to contents.
-go/packages will pull in new imports added in overlay files when go/packages
-is run in LoadImports mode or greater.
-Overlay support for the go list driver isn't complete yet: if the file doesn't
-exist on disk, it will only be recognized in an overlay if it is a non-test file
-and the package would be reported even without the overlay.
-
 Questions & Tasks
 
 - Add GOARCH/GOOS?
diff --git a/vendor/golang.org/x/tools/go/packages/external.go b/vendor/golang.org/x/tools/go/packages/external.go
index 4335c1e..c2b4b71 100644
--- a/vendor/golang.org/x/tools/go/packages/external.go
+++ b/vendor/golang.org/x/tools/go/packages/external.go
@@ -34,8 +34,8 @@ type DriverRequest struct {
 	// Tests specifies whether the patterns should also return test packages.
 	Tests bool `json:"tests"`
 
-	// Overlay maps file paths (relative to the driver's working directory) to the byte contents
-	// of overlay files.
+	// Overlay maps file paths (relative to the driver's working directory)
+	// to the contents of overlay files (see Config.Overlay).
 	Overlay map[string][]byte `json:"overlay"`
 }
 
@@ -119,7 +119,19 @@ func findExternalDriver(cfg *Config) driver {
 		stderr := new(bytes.Buffer)
 		cmd := exec.CommandContext(cfg.Context, tool, words...)
 		cmd.Dir = cfg.Dir
-		cmd.Env = cfg.Env
+		// The cwd gets resolved to the real path. On Darwin, where
+		// /tmp is a symlink, this breaks anything that expects the
+		// working directory to keep the original path, including the
+		// go command when dealing with modules.
+		//
+		// os.Getwd stdlib has a special feature where if the
+		// cwd and the PWD are the same node then it trusts
+		// the PWD, so by setting it in the env for the child
+		// process we fix up all the paths returned by the go
+		// command.
+		//
+		// (See similar trick in Invocation.run in ../../internal/gocommand/invoke.go)
+		cmd.Env = append(slicesClip(cfg.Env), "PWD="+cfg.Dir)
 		cmd.Stdin = bytes.NewReader(req)
 		cmd.Stdout = buf
 		cmd.Stderr = stderr
@@ -138,3 +150,7 @@ func findExternalDriver(cfg *Config) driver {
 		return &response, nil
 	}
 }
+
+// slicesClip removes unused capacity from the slice, returning s[:len(s):len(s)].
+// TODO(adonovan): use go1.21 slices.Clip.
+func slicesClip[S ~[]E, E any](s S) S { return s[:len(s):len(s)] }
diff --git a/vendor/golang.org/x/tools/go/packages/golist.go b/vendor/golang.org/x/tools/go/packages/golist.go
index 22305d9..d9be410 100644
--- a/vendor/golang.org/x/tools/go/packages/golist.go
+++ b/vendor/golang.org/x/tools/go/packages/golist.go
@@ -841,6 +841,7 @@ func (state *golistState) cfgInvocation() gocommand.Invocation {
 		Env:        cfg.Env,
 		Logf:       cfg.Logf,
 		WorkingDir: cfg.Dir,
+		Overlay:    cfg.goListOverlayFile,
 	}
 }
 
@@ -849,26 +850,6 @@ func (state *golistState) invokeGo(verb string, args ...string) (*bytes.Buffer,
 	cfg := state.cfg
 
 	inv := state.cfgInvocation()
-
-	// For Go versions 1.16 and above, `go list` accepts overlays directly via
-	// the -overlay flag. Set it, if it's available.
-	//
-	// The check for "list" is not necessarily required, but we should avoid
-	// getting the go version if possible.
-	if verb == "list" {
-		goVersion, err := state.getGoVersion()
-		if err != nil {
-			return nil, err
-		}
-		if goVersion >= 16 {
-			filename, cleanup, err := state.writeOverlays()
-			if err != nil {
-				return nil, err
-			}
-			defer cleanup()
-			inv.Overlay = filename
-		}
-	}
 	inv.Verb = verb
 	inv.Args = args
 	gocmdRunner := cfg.gocmdRunner
@@ -1015,67 +996,6 @@ func (state *golistState) invokeGo(verb string, args ...string) (*bytes.Buffer,
 	return stdout, nil
 }
 
-// OverlayJSON is the format overlay files are expected to be in.
-// The Replace map maps from overlaid paths to replacement paths:
-// the Go command will forward all reads trying to open
-// each overlaid path to its replacement path, or consider the overlaid
-// path not to exist if the replacement path is empty.
-//
-// From golang/go#39958.
-type OverlayJSON struct {
-	Replace map[string]string `json:"replace,omitempty"`
-}
-
-// writeOverlays writes out files for go list's -overlay flag, as described
-// above.
-func (state *golistState) writeOverlays() (filename string, cleanup func(), err error) {
-	// Do nothing if there are no overlays in the config.
-	if len(state.cfg.Overlay) == 0 {
-		return "", func() {}, nil
-	}
-	dir, err := os.MkdirTemp("", "gopackages-*")
-	if err != nil {
-		return "", nil, err
-	}
-	// The caller must clean up this directory, unless this function returns an
-	// error.
-	cleanup = func() {
-		os.RemoveAll(dir)
-	}
-	defer func() {
-		if err != nil {
-			cleanup()
-		}
-	}()
-	overlays := map[string]string{}
-	for k, v := range state.cfg.Overlay {
-		// Create a unique filename for the overlaid files, to avoid
-		// creating nested directories.
-		noSeparator := strings.Join(strings.Split(filepath.ToSlash(k), "/"), "")
-		f, err := os.CreateTemp(dir, fmt.Sprintf("*-%s", noSeparator))
-		if err != nil {
-			return "", func() {}, err
-		}
-		if _, err := f.Write(v); err != nil {
-			return "", func() {}, err
-		}
-		if err := f.Close(); err != nil {
-			return "", func() {}, err
-		}
-		overlays[k] = f.Name()
-	}
-	b, err := json.Marshal(OverlayJSON{Replace: overlays})
-	if err != nil {
-		return "", func() {}, err
-	}
-	// Write out the overlay file that contains the filepath mappings.
-	filename = filepath.Join(dir, "overlay.json")
-	if err := os.WriteFile(filename, b, 0665); err != nil {
-		return "", func() {}, err
-	}
-	return filename, cleanup, nil
-}
-
 func containsGoFile(s []string) bool {
 	for _, f := range s {
 		if strings.HasSuffix(f, ".go") {
diff --git a/vendor/golang.org/x/tools/go/packages/packages.go b/vendor/golang.org/x/tools/go/packages/packages.go
index 3ea1b3f..34306dd 100644
--- a/vendor/golang.org/x/tools/go/packages/packages.go
+++ b/vendor/golang.org/x/tools/go/packages/packages.go
@@ -37,10 +37,20 @@ import (
 // A LoadMode controls the amount of detail to return when loading.
 // The bits below can be combined to specify which fields should be
 // filled in the result packages.
+//
 // The zero value is a special case, equivalent to combining
 // the NeedName, NeedFiles, and NeedCompiledGoFiles bits.
+//
 // ID and Errors (if present) will always be filled.
-// Load may return more information than requested.
+// [Load] may return more information than requested.
+//
+// Unfortunately there are a number of open bugs related to
+// interactions among the LoadMode bits:
+// - https://github.com/golang/go/issues/48226
+// - https://github.com/golang/go/issues/56633
+// - https://github.com/golang/go/issues/56677
+// - https://github.com/golang/go/issues/58726
+// - https://github.com/golang/go/issues/63517
 type LoadMode int
 
 const (
@@ -123,7 +133,14 @@ const (
 
 // A Config specifies details about how packages should be loaded.
 // The zero value is a valid configuration.
+//
 // Calls to Load do not modify this struct.
+//
+// TODO(adonovan): #67702: this is currently false: in fact,
+// calls to [Load] do not modify the public fields of this struct, but
+// may modify hidden fields, so concurrent calls to [Load] must not
+// use the same Config. But perhaps we should reestablish the
+// documented invariant.
 type Config struct {
 	// Mode controls the level of information returned for each package.
 	Mode LoadMode
@@ -199,13 +216,23 @@ type Config struct {
 	// setting Tests may have no effect.
 	Tests bool
 
-	// Overlay provides a mapping of absolute file paths to file contents.
-	// If the file with the given path already exists, the parser will use the
-	// alternative file contents provided by the map.
+	// Overlay is a mapping from absolute file paths to file contents.
+	//
+	// For each map entry, [Load] uses the alternative file
+	// contents provided by the overlay mapping instead of reading
+	// from the file system. This mechanism can be used to enable
+	// editor-integrated tools to correctly analyze the contents
+	// of modified but unsaved buffers, for example.
 	//
-	// Overlays provide incomplete support for when a given file doesn't
-	// already exist on disk. See the package doc above for more details.
+	// The overlay mapping is passed to the build system's driver
+	// (see "The driver protocol") so that it too can report
+	// consistent package metadata about unsaved files. However,
+	// drivers may vary in their level of support for overlays.
 	Overlay map[string][]byte
+
+	// goListOverlayFile is the JSON file that encodes the Overlay
+	// mapping, used by 'go list -overlay=...'
+	goListOverlayFile string
 }
 
 // Load loads and returns the Go packages named by the given patterns.
@@ -213,6 +240,20 @@ type Config struct {
 // Config specifies loading options;
 // nil behaves the same as an empty Config.
 //
+// The [Config.Mode] field is a set of bits that determine what kinds
+// of information should be computed and returned. Modes that require
+// more information tend to be slower. See [LoadMode] for details
+// and important caveats. Its zero value is equivalent to
+// NeedName | NeedFiles | NeedCompiledGoFiles.
+//
+// Each call to Load returns a new set of [Package] instances.
+// The Packages and their Imports form a directed acyclic graph.
+//
+// If the [NeedTypes] mode flag was set, each call to Load uses a new
+// [types.Importer], so [types.Object] and [types.Type] values from
+// different calls to Load must not be mixed as they will have
+// inconsistent notions of type identity.
+//
 // If any of the patterns was invalid as defined by the
 // underlying build system, Load returns an error.
 // It may return an empty list of packages without an error,
@@ -286,6 +327,17 @@ func defaultDriver(cfg *Config, patterns ...string) (*DriverResponse, bool, erro
 		// (fall through)
 	}
 
+	// go list fallback
+	//
+	// Write overlays once, as there are many calls
+	// to 'go list' (one per chunk plus others too).
+	overlay, cleanupOverlay, err := gocommand.WriteOverlays(cfg.Overlay)
+	if err != nil {
+		return nil, false, err
+	}
+	defer cleanupOverlay()
+	cfg.goListOverlayFile = overlay
+
 	response, err := callDriverOnChunks(goListDriver, cfg, chunks)
 	if err != nil {
 		return nil, false, err
@@ -365,6 +417,9 @@ func mergeResponses(responses ...*DriverResponse) *DriverResponse {
 }
 
 // A Package describes a loaded Go package.
+//
+// It also defines part of the JSON schema of [DriverResponse].
+// See the package documentation for an overview.
 type Package struct {
 	// ID is a unique identifier for a package,
 	// in a syntax provided by the underlying build system.
@@ -423,6 +478,13 @@ type Package struct {
 	// to corresponding loaded Packages.
 	Imports map[string]*Package
 
+	// Module is the module information for the package if it exists.
+	//
+	// Note: it may be missing for std and cmd; see Go issue #65816.
+	Module *Module
+
+	// -- The following fields are not part of the driver JSON schema. --
+
 	// Types provides type information for the package.
 	// The NeedTypes LoadMode bit sets this field for packages matching the
 	// patterns; type information for dependencies may be missing or incomplete,
@@ -431,15 +493,15 @@ type Package struct {
 	// Each call to [Load] returns a consistent set of type
 	// symbols, as defined by the comment at [types.Identical].
 	// Avoid mixing type information from two or more calls to [Load].
-	Types *types.Package
+	Types *types.Package `json:"-"`
 
 	// Fset provides position information for Types, TypesInfo, and Syntax.
 	// It is set only when Types is set.
-	Fset *token.FileSet
+	Fset *token.FileSet `json:"-"`
 
 	// IllTyped indicates whether the package or any dependency contains errors.
 	// It is set only when Types is set.
-	IllTyped bool
+	IllTyped bool `json:"-"`
 
 	// Syntax is the package's syntax trees, for the files listed in CompiledGoFiles.
 	//
@@ -449,26 +511,28 @@ type Package struct {
 	//
 	// Syntax is kept in the same order as CompiledGoFiles, with the caveat that nils are
 	// removed.  If parsing returned nil, Syntax may be shorter than CompiledGoFiles.
-	Syntax []*ast.File
+	Syntax []*ast.File `json:"-"`
 
 	// TypesInfo provides type information about the package's syntax trees.
 	// It is set only when Syntax is set.
-	TypesInfo *types.Info
+	TypesInfo *types.Info `json:"-"`
 
 	// TypesSizes provides the effective size function for types in TypesInfo.
-	TypesSizes types.Sizes
+	TypesSizes types.Sizes `json:"-"`
+
+	// -- internal --
 
 	// forTest is the package under test, if any.
 	forTest string
 
 	// depsErrors is the DepsErrors field from the go list response, if any.
 	depsErrors []*packagesinternal.PackageError
-
-	// module is the module information for the package if it exists.
-	Module *Module
 }
 
 // Module provides module information for a package.
+//
+// It also defines part of the JSON schema of [DriverResponse].
+// See the package documentation for an overview.
 type Module struct {
 	Path      string       // module path
 	Version   string       // module version
@@ -601,6 +665,7 @@ func (p *Package) UnmarshalJSON(b []byte) error {
 		OtherFiles:      flat.OtherFiles,
 		EmbedFiles:      flat.EmbedFiles,
 		EmbedPatterns:   flat.EmbedPatterns,
+		IgnoredFiles:    flat.IgnoredFiles,
 		ExportFile:      flat.ExportFile,
 	}
 	if len(flat.Imports) > 0 {
diff --git a/vendor/golang.org/x/tools/internal/analysisinternal/analysis.go b/vendor/golang.org/x/tools/internal/analysisinternal/analysis.go
index 2c406de..9ba3a8e 100644
--- a/vendor/golang.org/x/tools/internal/analysisinternal/analysis.go
+++ b/vendor/golang.org/x/tools/internal/analysisinternal/analysis.go
@@ -399,15 +399,15 @@ func equivalentTypes(want, got types.Type) bool {
 // MakeReadFile returns a simple implementation of the Pass.ReadFile function.
 func MakeReadFile(pass *analysis.Pass) func(filename string) ([]byte, error) {
 	return func(filename string) ([]byte, error) {
-		if err := checkReadable(pass, filename); err != nil {
+		if err := CheckReadable(pass, filename); err != nil {
 			return nil, err
 		}
 		return os.ReadFile(filename)
 	}
 }
 
-// checkReadable enforces the access policy defined by the ReadFile field of [analysis.Pass].
-func checkReadable(pass *analysis.Pass, filename string) error {
+// CheckReadable enforces the access policy defined by the ReadFile field of [analysis.Pass].
+func CheckReadable(pass *analysis.Pass, filename string) error {
 	if slicesContains(pass.OtherFiles, filename) ||
 		slicesContains(pass.IgnoredFiles, filename) {
 		return nil
diff --git a/vendor/golang.org/x/tools/internal/gocommand/invoke.go b/vendor/golang.org/x/tools/internal/gocommand/invoke.go
index eb7a828..af0ee6c 100644
--- a/vendor/golang.org/x/tools/internal/gocommand/invoke.go
+++ b/vendor/golang.org/x/tools/internal/gocommand/invoke.go
@@ -8,12 +8,14 @@ package gocommand
 import (
 	"bytes"
 	"context"
+	"encoding/json"
 	"errors"
 	"fmt"
 	"io"
 	"log"
 	"os"
 	"os/exec"
+	"path/filepath"
 	"reflect"
 	"regexp"
 	"runtime"
@@ -167,7 +169,9 @@ type Invocation struct {
 	// TODO(rfindley): remove, in favor of Args.
 	ModFile string
 
-	// If Overlay is set, the go command is invoked with -overlay=Overlay.
+	// Overlay is the name of the JSON overlay file that describes
+	// unsaved editor buffers; see [WriteOverlays].
+	// If set, the go command is invoked with -overlay=Overlay.
 	// TODO(rfindley): remove, in favor of Args.
 	Overlay string
 
@@ -255,12 +259,15 @@ func (i *Invocation) run(ctx context.Context, stdout, stderr io.Writer) error {
 		waitDelay.Set(reflect.ValueOf(30 * time.Second))
 	}
 
-	// On darwin the cwd gets resolved to the real path, which breaks anything that
-	// expects the working directory to keep the original path, including the
+	// The cwd gets resolved to the real path. On Darwin, where
+	// /tmp is a symlink, this breaks anything that expects the
+	// working directory to keep the original path, including the
 	// go command when dealing with modules.
-	// The Go stdlib has a special feature where if the cwd and the PWD are the
-	// same node then it trusts the PWD, so by setting it in the env for the child
-	// process we fix up all the paths returned by the go command.
+	//
+	// os.Getwd has a special feature where if the cwd and the PWD
+	// are the same node then it trusts the PWD, so by setting it
+	// in the env for the child process we fix up all the paths
+	// returned by the go command.
 	if !i.CleanEnv {
 		cmd.Env = os.Environ()
 	}
@@ -351,6 +358,7 @@ func runCmdContext(ctx context.Context, cmd *exec.Cmd) (err error) {
 		}
 	}
 
+	startTime := time.Now()
 	err = cmd.Start()
 	if stdoutW != nil {
 		// The child process has inherited the pipe file,
@@ -377,7 +385,7 @@ func runCmdContext(ctx context.Context, cmd *exec.Cmd) (err error) {
 		case err := <-resChan:
 			return err
 		case <-timer.C:
-			HandleHangingGoCommand(cmd.Process)
+			HandleHangingGoCommand(startTime, cmd)
 		case <-ctx.Done():
 		}
 	} else {
@@ -411,7 +419,7 @@ func runCmdContext(ctx context.Context, cmd *exec.Cmd) (err error) {
 	return <-resChan
 }
 
-func HandleHangingGoCommand(proc *os.Process) {
+func HandleHangingGoCommand(start time.Time, cmd *exec.Cmd) {
 	switch runtime.GOOS {
 	case "linux", "darwin", "freebsd", "netbsd":
 		fmt.Fprintln(os.Stderr, `DETECTED A HANGING GO COMMAND
@@ -444,7 +452,7 @@ See golang/go#54461 for more details.`)
 			panic(fmt.Sprintf("running %s: %v", listFiles, err))
 		}
 	}
-	panic(fmt.Sprintf("detected hanging go command (pid %d): see golang/go#54461 for more details", proc.Pid))
+	panic(fmt.Sprintf("detected hanging go command (golang/go#54461); waited %s\n\tcommand:%s\n\tpid:%d", time.Since(start), cmd, cmd.Process.Pid))
 }
 
 func cmdDebugStr(cmd *exec.Cmd) string {
@@ -468,3 +476,73 @@ func cmdDebugStr(cmd *exec.Cmd) string {
 	}
 	return fmt.Sprintf("GOROOT=%v GOPATH=%v GO111MODULE=%v GOPROXY=%v PWD=%v %v", env["GOROOT"], env["GOPATH"], env["GO111MODULE"], env["GOPROXY"], env["PWD"], strings.Join(args, " "))
 }
+
+// WriteOverlays writes each value in the overlay (see the Overlay
+// field of go/packages.Config) to a temporary file and returns the name
+// of a JSON file describing the mapping that is suitable for the "go
+// list -overlay" flag.
+//
+// On success, the caller must call the cleanup function exactly once
+// when the files are no longer needed.
+func WriteOverlays(overlay map[string][]byte) (filename string, cleanup func(), err error) {
+	// Do nothing if there are no overlays in the config.
+	if len(overlay) == 0 {
+		return "", func() {}, nil
+	}
+
+	dir, err := os.MkdirTemp("", "gocommand-*")
+	if err != nil {
+		return "", nil, err
+	}
+
+	// The caller must clean up this directory,
+	// unless this function returns an error.
+	// (The cleanup operand of each return
+	// statement below is ignored.)
+	defer func() {
+		cleanup = func() {
+			os.RemoveAll(dir)
+		}
+		if err != nil {
+			cleanup()
+			cleanup = nil
+		}
+	}()
+
+	// Write each map entry to a temporary file.
+	overlays := make(map[string]string)
+	for k, v := range overlay {
+		// Use a unique basename for each file (001-foo.go),
+		// to avoid creating nested directories.
+		base := fmt.Sprintf("%d-%s.go", 1+len(overlays), filepath.Base(k))
+		filename := filepath.Join(dir, base)
+		err := os.WriteFile(filename, v, 0666)
+		if err != nil {
+			return "", nil, err
+		}
+		overlays[k] = filename
+	}
+
+	// Write the JSON overlay file that maps logical file names to temp files.
+	//
+	// OverlayJSON is the format overlay files are expected to be in.
+	// The Replace map maps from overlaid paths to replacement paths:
+	// the Go command will forward all reads trying to open
+	// each overlaid path to its replacement path, or consider the overlaid
+	// path not to exist if the replacement path is empty.
+	//
+	// From golang/go#39958.
+	type OverlayJSON struct {
+		Replace map[string]string `json:"replace,omitempty"`
+	}
+	b, err := json.Marshal(OverlayJSON{Replace: overlays})
+	if err != nil {
+		return "", nil, err
+	}
+	filename = filepath.Join(dir, "overlay.json")
+	if err := os.WriteFile(filename, b, 0666); err != nil {
+		return "", nil, err
+	}
+
+	return filename, nil, nil
+}
diff --git a/vendor/golang.org/x/tools/internal/versions/types_go122.go b/vendor/golang.org/x/tools/internal/versions/types_go122.go
index e818063..aac5db6 100644
--- a/vendor/golang.org/x/tools/internal/versions/types_go122.go
+++ b/vendor/golang.org/x/tools/internal/versions/types_go122.go
@@ -12,7 +12,7 @@ import (
 	"go/types"
 )
 
-// FileVersions returns a file's Go version.
+// FileVersion returns a file's Go version.
 // The reported version is an unknown Future version if a
 // version cannot be determined.
 func FileVersion(info *types.Info, file *ast.File) string {
diff --git a/vendor/modules.txt b/vendor/modules.txt
index 7365970..564e196 100644
--- a/vendor/modules.txt
+++ b/vendor/modules.txt
@@ -1,4 +1,4 @@
-# golang.org/x/mod v0.17.0
+# golang.org/x/mod v0.18.0
 ## explicit; go 1.18
 golang.org/x/mod/internal/lazyregexp
 golang.org/x/mod/modfile
@@ -7,7 +7,7 @@ golang.org/x/mod/semver
 # golang.org/x/sync v0.7.0
 ## explicit; go 1.18
 golang.org/x/sync/errgroup
-# golang.org/x/tools v0.21.0
+# golang.org/x/tools v0.22.0
 ## explicit; go 1.19
 golang.org/x/tools/go/analysis
 golang.org/x/tools/go/analysis/analysistest