From 3cccac26dc804704446cd88676dc583f997252fd Mon Sep 17 00:00:00 2001
From: Marshall Lochbaum <mwlochbaum@gmail.com>
Date: Wed, 17 Aug 2022 10:20:36 -0400
Subject: Index-based is better than mask-based tracing (e.g. for strings and
 comments)

---
 src/eu.bqn | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'src/eu.bqn')

diff --git a/src/eu.bqn b/src/eu.bqn
index 39677b54..0f3d0a20 100644
--- a/src/eu.bqn
+++ b/src/eu.bqn
@@ -14,8 +14,8 @@ Explain ← {
   ⟩
   m ← { # Mask of instruction starts
     n ← (↕≠b)+1+ba(⊣⊏˜≠⊸>×⊢)b
-    Se←{(⊏˜𝕨)Se 1¨⌾((𝕩/𝕨)⊸⊏)𝕩}⍟(0=¯1⊑⊢)
-    (≠↑∾⟜≠Se 1∾0¨) n
+    Se←≠(>/⊢)∾⟜≠{(⊏˜𝕨)𝕊⍟(≠○(¯1⊸⊑))𝕩∾𝕩⊏𝕨}⟨0⟩˙
+    (≠↑·/⁼Se) n
   }
   mb‿mi ← 0‿¯1 ↓¨ m⊸/¨ b‿i
   la←¯1=na←mb⊏bc
-- 
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