golang
diff --git a/‎gopls/internal/lsp/cmd/test/cmdtest.go renamed to ‎cmd/bisect/go119.go
+9-2 b/‎gopls/internal/lsp/cmd/test/cmdtest.go renamed to ‎cmd/bisect/go119.go
+9-2
diff --git a/‎cmd/bisect/go120.go
+26 b/‎cmd/bisect/go120.go
+26
@@ -2,5 +2,12 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-// Package cmdtest contains the test suite for the command line behavior of gopls.
-package cmdtest
+//go:build !go1.20
+
+package main
+
+import "os/exec"
+
+func cmdInterrupt(cmd *exec.Cmd) {
+	// cmd.Cancel and cmd.WaitDelay not available before Go 1.20.
+}
@@ -0,0 +1,26 @@
+// Copyright 2023 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+//go:build go1.20
+
+package main
+
+import (
+	"os"
+	"os/exec"
+	"time"
+)
+
+func cmdInterrupt(cmd *exec.Cmd) {
+	cmd.Cancel = func() error {
+		// On timeout, send interrupt,
+		// in hopes of shutting down process tree.
+		// Ignore errors sending signal; it's all best effort
+		// and not even implemented on Windows.
+		// TODO(rsc): Maybe use a new process group and kill the whole group?
+		cmd.Process.Signal(os.Interrupt)
+		return nil
+	}
+	cmd.WaitDelay = 2 * time.Second
+}