Ref #19453 - customize cli.HelpPrinter to fix alignment

this copies cli.printHelp but changes minwidth to 40

cmd/geth/main.go

@@ -19,13 +19,16 @@ package main
 
 import (
 	"fmt"
+	"io"
 	"math"
 	"os"
 	"runtime"
 	godebug "runtime/debug"
 	"sort"
 	"strconv"
 	"strings"
+	"text/tabwriter"
+	"text/template"
 	"time"
 
 	"github.com/elastic/gosigar"
@@ -234,6 +237,26 @@ func init() {
 	app.Flags = append(app.Flags, whisperFlags...)
 	app.Flags = append(app.Flags, metricsFlags...)
 
+	// Create a custom printer for minwidth:40 to fix alignment across commands
+	cli.HelpPrinter = func(out io.Writer, templ string, data interface{}) {
+		funcMap := template.FuncMap{
+			"join": strings.Join,
+		}
+
+		w := tabwriter.NewWriter(out, 40, 8, 2, ' ', 0)
+		t := template.Must(template.New("help").Funcs(funcMap).Parse(templ))
+		err := t.Execute(w, data)
+		if err != nil {
+			// If the writer is closed, t.Execute will fail, and there's nothing
+			// we can do to recover.
+			if os.Getenv("CLI_TEMPLATE_ERROR_DEBUG") != "" {
+				log.Crit("CLI TEMPLATE ERROR: %#v\n", err)
+			}
+			return
+		}
+		w.Flush()
+	}
+
 	app.Before = func(ctx *cli.Context) error {
 		logdir := ""
 		if ctx.GlobalBool(utils.DashboardEnabledFlag.Name) {