From 0b56b56c069ab257a9ce55a642d5369dbc04f3ff Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=B6rg=20Breitbart?= <jerch@rockborn.de>
Date: Wed, 7 Dec 2022 22:55:45 +0100
Subject: [PATCH] skipping renderer on NUL and SP

---
 addons/xterm-addon-canvas/src/TextRenderLayer.ts | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/addons/xterm-addon-canvas/src/TextRenderLayer.ts b/addons/xterm-addon-canvas/src/TextRenderLayer.ts
index 66fc5106..b429e8c2 100644
--- a/addons/xterm-addon-canvas/src/TextRenderLayer.ts
+++ b/addons/xterm-addon-canvas/src/TextRenderLayer.ts
@@ -95,6 +95,12 @@ export class TextRenderLayer extends BaseRenderLayer {
           continue;
         }
 
+        // exit early for NULL and SP
+        const code = cell.getCode();
+        if (code === 0 || code === 32) {
+          continue;
+        }
+
         // Process any joined character ranges as needed. Because of how the
         // ranges are produced, we know that they are valid for the characters
         // and attributes of our input.