cmd/go/internal/doc: reject meta packages in go doc

src/cmd/go/internal/doc/doc.go

@@ -233,12 +233,18 @@ func do(ctx context.Context, writer io.Writer, flagSet *flag.FlagSet, args []str
 			// Outside a module or workspace, go to the documentation for the standard library.
 			return doPkgsite(ctx, "std", "")
 		}
+		if args := flagSet.Args(); len(args) == 1 && args[0] == "std" {
+			return doPkgsite(ctx, "std", "")
+		}
 
 		// If args are provided, we need to figure out which page to open on the pkgsite
 		// instance. Run the logic below to determine a match for a symbol, method,
 		// or field, but don't actually print the documentation to the output.
 		writer = io.Discard
 	}
+	if a := flagSet.Args(); len(a) > 0 && search.IsMetaPackage(a[0]) {
+		return fmt.Errorf("go doc does not support meta-package argument %s", a[0])
+	}
 	var paths []string
 	var symbol, method string
 	// Loop until something is printed.

src/cmd/go/internal/doc/doc_test.go

@@ -1239,6 +1239,31 @@ func TestNoPackageClauseWhenNoMatch(t *testing.T) {
 	}
 }
 
+func TestMetaPackage(t *testing.T) {
+	maybeSkip(t)
+	for _, args := range [][]string{
+		{"std"},
+		{"cmd"},
+		{"all"},
+		{"tool"},
+		{"work"},
+		{"std", "Foo"},
+	} {
+		var b strings.Builder
+		var flagSet flag.FlagSet
+		err := do(t.Context(), &b, &flagSet, args)
+		if err == nil {
+			t.Fatalf("expected error for go doc %s; got output:\n%s", strings.Join(args, " "), b.String())
+		}
+		if want := "go doc does not support meta-package argument " + args[0]; !strings.Contains(err.Error(), want) {
+			t.Fatalf("unexpected error for go doc %s: %v", strings.Join(args, " "), err)
+		}
+		if b.Len() != 0 {
+			t.Fatalf("go doc %s produced unexpected output:\n%s", strings.Join(args, " "), b.String())
+		}
+	}
+}
+
 type trimTest struct {
 	path   string
 	prefix string

src/cmd/go/testdata/script/doc.txt

@@ -60,6 +60,24 @@ stdout .
 go doc Method
 stdout .
 
+# Meta packages are package patterns, not documentable packages.
+# Regression test for golang.org/issue/53446.
+! go doc std
+stderr '^doc: go doc does not support meta-package argument std$'
+! stdout .
+
+! go doc all
+stderr '^doc: go doc does not support meta-package argument all$'
+! stdout .
+
+! go doc std Foo
+stderr '^doc: go doc does not support meta-package argument std$'
+! stdout .
+
+env TEST_GODOC_URL_FILE=$WORK/url.txt
+go doc -http std
+grep '/std' $TEST_GODOC_URL_FILE
+
 -- go.mod --
 module p/v2