Forbid -d when digit map cannot be shown

-d shows only the digit map and nothing else, so if the digit map cannot
be shown (e.g. radices above 36 without -f), it makes sense to forbid
this rather than print an empty string.

1 files changed, 1 insertions, 3 deletions

diff --git a/print_digit_map.go b/print_digit_map.go
index 1f5ad64..3e59c8c 100644
--- a/print_digit_map.go
+++ b/print_digit_map.go
@@ -12,9 +12,7 @@ import (
 const maxSmallRadix = 36
 
 func writeDigitMap(w io.Writer, digitMap []factors.DigitType) {
-	if len(digitMap) < 2 {
-		panic("Radices cannot be less than 2!")
-	} else if len(digitMap) <= 36 {
+	if len(digitMap) <= 36 {
 		writeDigitMapSmall(w, digitMap)
 	}
 }