Implement :next-message n%

commands/next-message.go

@@ -4,6 +4,7 @@ import (
 	"errors"
 	"fmt"
 	"strconv"
+	"strings"
 
 	"git.sr.ht/~sircmpwn/aerc2/widgets"
 )
@@ -14,7 +15,7 @@ func init() {
 }
 
 func nextPrevMessageUsage(cmd string) error {
-	return errors.New(fmt.Sprintf("Usage: %s [n]", cmd))
+	return errors.New(fmt.Sprintf("Usage: %s [<n>[%]]", cmd))
 }
 
 func NextPrevMessage(aerc *widgets.Aerc, args []string) error {
@@ -24,14 +25,22 @@ func NextPrevMessage(aerc *widgets.Aerc, args []string) error {
 	var (
 		n   int = 1
 		err error
+		pct bool
 	)
 	if len(args) > 1 {
+		if strings.HasSuffix(args[1], "%") {
+			pct = true
+			args[1] = args[1][:len(args[1])-1]
+		}
 		n, err = strconv.Atoi(args[1])
 		if err != nil {
 			return nextPrevMessageUsage(args[0])
 		}
 	}
 	acct := aerc.SelectedAccount()
+	if pct {
+		n = int(float64(acct.Messages().Height()) * (float64(n) / 100.0))
+	}
 	for ; n > 0; n-- {
 		if args[0] == "prev-message" {
 			acct.Messages().Prev()