1 files changed, 2 insertions, 0 deletions

diff --git a/src/utils.ml b/src/utils.ml
index 59eac6c..b3dbbda 100644
--- a/src/utils.ml
+++ b/src/utils.ml
@@ -37,3 +37,5 @@ let space = to_string ' '
 let axis = "┬"
 
 let axis_spc = "─"
+
+let rec ( -- ) i j = if i >= j then [] else i :: (i + 1 -- j)