This is mainly for consistency with other words
(factors, group-factors, unique-factors)
---
basis/math/primes/factors/factors.factor | 6 ++++--
1 files changed, 4 insertions(+), 2 deletions(-)
diff --git a/basis/math/primes/factors/factors.factor
b/basis/math/primes/factors/factors.factor
index dd73b0a..105bd5b 100644
--- a/basis/math/primes/factors/factors.factor
+++ b/basis/math/primes/factors/factors.factor
@@ -47,8 +47,10 @@ PRIVATE>
dup 1 = [
1array
] [
- group-factors [ first2 [0,b] [ ^ ] with map ] map
- [ product ] product-map natural-sort
+ group-factors dup empty? [
+ [ first2 [0,b] [ ^ ] with map ] map
+ [ product ] product-map natural-sort
+ ] unless
] if ;
: unix-factor ( string -- )
--
1.7.0.4
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