From 3237f8d123351c8525eecc9f86c88880326cf061 Mon Sep 17 00:00:00 2001
From: Richard Hansen <rhansen@rhansen.org>
Date: Sat, 14 Aug 2021 22:15:40 -0400
Subject: [PATCH] ace2_inner: Simplify iteration over line number divs

---
 src/static/js/ace2_inner.js | 13 ++++---------
 1 file changed, 4 insertions(+), 9 deletions(-)

diff --git a/src/static/js/ace2_inner.js b/src/static/js/ace2_inner.js
index c315a31d1..a46978139 100644
--- a/src/static/js/ace2_inner.js
+++ b/src/static/js/ace2_inner.js
@@ -3603,15 +3603,10 @@ function Ace2Inner(editorInfo, cssManagers) {
       }
     }
 
-    let sidebarLine = sideDivInner.firstChild;
-    currentLine = 0;
-    while (sidebarLine && currentLine <= sideDivInner.children.length) {
-      if (lineOffsets[currentLine] != null) {
-        sidebarLine.style.height = `${lineOffsets[currentLine]}px`;
-        sidebarLine.style.lineHeight = `${lineHeights[currentLine]}px`;
-      }
-      sidebarLine = sidebarLine.nextSibling;
-      currentLine++;
+    for (const [i, sideDivLine] of Array.prototype.entries.call(sideDivInner.children)) {
+      if (lineOffsets[i] == null) continue;
+      sideDivLine.style.height = `${lineOffsets[i]}px`;
+      sideDivLine.style.lineHeight = `${lineHeights[i]}px`;
     }
   };