neater bal print

cmd/cli/main.go

@@ -158,7 +158,25 @@ func FPrintBalances(w io.Writer, linePrefix string, balances, cumulatives ledger
 	if normalized {
 		format = fmt.Sprintf("%s%%-%ds\t%%s%%.2f (%%s%%.2f (%%.2f @%%.2f (%%s%%.0f)))\n", linePrefix, max)
 	}
-	for _, key := range keys {
+	for i, key := range keys {
+		printableKey := key
+		if i > 0 {
+			j := 0
+			n := len(keys[i])
+			if n2 := len(keys[i-1]); n2 < n {
+				n = n2
+			}
+			for j = 0; j < n; j++ {
+				if keys[i-1][j] != keys[i][j] {
+					break
+				}
+			}
+			for keys[i][j] != ':' && j > 0 {
+				j -= 1
+			}
+			printableKey = strings.Repeat(" ", j) + keys[i][j:]
+		}
+
 		currencies := []ledger.Currency{}
 		for currency := range balances[key] {
 			currencies = append(currencies, currency)
@@ -182,11 +200,11 @@ func FPrintBalances(w io.Writer, linePrefix string, balances, cumulatives ledger
 			}
 
 			if !normalized {
-				fmt.Fprintf(w, format, key, printableCurrency, balances[key][currency], printableCurrency, cumulative)
+				fmt.Fprintf(w, format, printableKey, printableCurrency, balances[key][currency], printableCurrency, cumulative)
 			} else {
 				factor := normalizer.NormalizeFactor(ledger.Delta{Name: key, Date: date})
 				trailingMax := maxes[currency] - math.Abs(balances[key][currency])
-				fmt.Fprintf(w, format, key, printableCurrency, balances[key][currency], printableCurrency, cumulative, cumulative*factor, factor, printableCurrency, factor*trailingMax)
+				fmt.Fprintf(w, format, printableKey, printableCurrency, balances[key][currency], printableCurrency, cumulative, cumulative*factor, factor, printableCurrency, factor*trailingMax)
 			}
 		}
 	}