Fix error on input with no parens

1 files changed, 1 insertions, 1 deletions

diff --git a/c.bqn b/c.bqn
index 7c7bb665..11e170c3 100755
--- a/c.bqn
+++ b/c.bqn
@@ -5,7 +5,7 @@ Parse←{
   na←f×1+l↑0∾c∨v
   e←/c⋄d←+`o-c
   ed←e⊏d⋄b←(⍋⍋ed)⊏(⍋⊏⟜d)⊸⊏/o
-  s←e-(e∾l)⊏˜{u←(≠e)¨𝕩⋄{(𝕩⊏u)↩𝕨⊏˜𝕨⍋𝕩}¨´˘2↕⊔𝕩⋄u}ed
+  s←e-(e∾l)⊏˜{u←(≠e)¨𝕩⋄{(𝕩⊏u)↩𝕨⊏˜𝕨⍋𝕩}¨´˘2↕⊔𝕩⋄u}⍟(0<≠)ed
   fe←f×(l-1)++`(-⊸≍s)⌾((e≍b)⊸⊏)l⥊0
   ia←+`l↑0∾f-l↑/⁼∧f/fe
   sel←¬∘⊏⟜(o∨c)⊸/⍋(fe⌈↕l)-ia