From add3be85289a701bf075307d2dfef9fd8a50f69f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bla=C5=BE=20Hrastnik?= <blaz@mxxn.io>
Date: Wed, 12 Jan 2022 22:27:48 +0900
Subject: [PATCH] Slicing micro-optimization

---
 helix-term/src/ui/editor.rs | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/helix-term/src/ui/editor.rs b/helix-term/src/ui/editor.rs
index 956db72e..f90fbf74 100644
--- a/helix-term/src/ui/editor.rs
+++ b/helix-term/src/ui/editor.rs
@@ -270,6 +270,10 @@ impl EditorView {
 
         let text_style = theme.get("ui.text");
 
+        // It's slightly more efficient to produce a full RopeSlice from the Rope, then slice that a bunch
+        // of times than it is to always call Rope::slice/get_slice (it will internally always hit RSEnum::Light).
+        let text = text.slice(..);
+
         'outer: for event in highlights {
             match event {
                 HighlightEvent::HighlightStart(span) => {