Enhance tab completion

src/cli/cli.go

@@ -9,6 +9,7 @@ import (
 	"path"
 	"path/filepath"
 	"runtime"
+	"strconv"
 	"strings"
 	"time"
 
@@ -365,10 +366,21 @@ func (t TabComplete) Do(line []rune, pos int) ([][]rune, int) {
 		// No completion
 		return [][]rune{[]rune("")}, 0
 	}
+	if len(words) == 1 && nbCharacter == utils.NbPinNumbers {
+		// Check if word is indeed a number
+		_, err := strconv.Atoi(lastPartialWord)
+		if err == nil {
+			return [][]rune{[]rune("-")}, nbCharacter
+		}
+	}
 	var strArray [][]rune
 	for _, s := range mnemonicode.WordList {
 		if strings.HasPrefix(s, lastPartialWord) {
-			strArray = append(strArray, []rune(s[nbCharacter:]))
+			var completionCandidate = s[nbCharacter:]
+			if len(words) <= mnemonicode.WordsRequired(utils.NbBytesWords) {
+				completionCandidate += "-"
+			}
+			strArray = append(strArray, []rune(completionCandidate))
 		}
 	}
 	return strArray, nbCharacter

src/utils/utils.go

@@ -27,6 +27,9 @@ import (
 	"github.com/schollz/mnemonicode"
 )
 
+const NbPinNumbers = 4
+const NbBytesWords = 4
+
 // Get or create home directory
 func GetConfigDir() (homedir string, err error) {
 	homedir, err = os.UserHomeDir()
@@ -186,7 +189,7 @@ func GenerateRandomPin() string {
 	s := ""
 	max := new(big.Int)
 	max.SetInt64(9)
-	for i := 0; i < 4; i++ {
+	for i := 0; i < NbPinNumbers; i++ {
 		v, err := rand.Int(rand.Reader, max)
 		if err != nil {
 			panic(err)
@@ -199,7 +202,7 @@ func GenerateRandomPin() string {
 // GetRandomName returns mnemonicoded random name
 func GetRandomName() string {
 	var result []string
-	bs := make([]byte, 4)
+	bs := make([]byte, NbBytesWords)
 	rand.Read(bs)
 	result = mnemonicode.EncodeWordList(result, bs)
 	return GenerateRandomPin() + "-" + strings.Join(result, "-")