added variable to allow configuration of mousetrap message duration

new variable MousetrapDisplayDuration allows to modify the default
display duration of 5s, or to completely disable the timeout and wait
for the user to press the return key.

cobra.go

@@ -23,6 +23,7 @@ import (
 	"strconv"
 	"strings"
 	"text/template"
+	"time"
 	"unicode"
 )
 
@@ -56,6 +57,12 @@ var MousetrapHelpText string = `This is a command line tool.
 You need to open cmd.exe and run it from there.
 `
 
+// MousetrapDisplayDuration controls how long the MousetrapHelpText message is displayed on Windows
+// if the CLI is started from explorer.exe. Set to 0 to wait for the return key to be pressed.
+// To disable the mousetrap, just set MousetrapHelpText to blank string ("").
+// Works only on Microsoft Windows.
+var MousetrapDisplayDuration time.Duration = 5 * time.Second
+
 // AddTemplateFunc adds a template function that's available to Usage and Help
 // template generation.
 func AddTemplateFunc(name string, tmplFunc interface{}) {

command_win.go

@@ -3,6 +3,7 @@
 package cobra
 
 import (
+	"fmt"
 	"os"
 	"time"
 
@@ -14,7 +15,12 @@ var preExecHookFn = preExecHook
 func preExecHook(c *Command) {
 	if MousetrapHelpText != "" && mousetrap.StartedByExplorer() {
 		c.Print(MousetrapHelpText)
-		time.Sleep(5 * time.Second)
+		if MousetrapDisplayDuration > 0 {
+			time.Sleep(MousetrapDisplayDuration)
+		} else {
+			c.Println("Press return to continue...")
+			fmt.Scanln()
+		}
 		os.Exit(1)
 	}
 }