Merge pull request #220 from mengshengwu/fix-windows-progressbar-flickering

fix: flickering on powershell

Author: schollz

progressbar.go

@@ -10,6 +10,7 @@ import (
 	"net/http"
 	"os"
 	"regexp"
+	"runtime"
 	"strings"
 	"sync"
 	"time"
@@ -1380,6 +1381,9 @@ func clearProgressBar(c config, s state) error {
 	// fill the empty content
 	// to overwrite the progress bar and jump
 	// back to the beginning of the line
+	if runtime.GOOS == "windows" {
+		return writeString(c, "\r")
+	}
 	str := fmt.Sprintf("\r%s\r", strings.Repeat(" ", s.maxLineWidth))
 	return writeString(c, str)
 	// the following does not show correctly if the previous line is longer than subsequent line