From f0d5b4012134a617408c38eb98382c1ef36ebe17 Mon Sep 17 00:00:00 2001
From: yutaka <shigure@refy.net>
Date: Wed, 8 Mar 2017 01:03:18 +0000
Subject: [PATCH] Detect bold font was broken correctly.

---
 src/Renderer.ts | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/src/Renderer.ts b/src/Renderer.ts
index 9b6234ca..e1ebbe8f 100644
--- a/src/Renderer.ts
+++ b/src/Renderer.ts
@@ -34,7 +34,7 @@ export class Renderer {
     // Figure out whether boldness affects
     // the character width of monospace fonts.
     if (brokenBold === null) {
-      brokenBold = checkBoldBroken((<any>this._terminal).document);
+      brokenBold = checkBoldBroken((<any>this._terminal).element);
     }
 
     // TODO: Pull more DOM interactions into Renderer.constructor, element for
@@ -291,14 +291,14 @@ export class Renderer {
 
 // if bold is broken, we can't
 // use it in the terminal.
-function checkBoldBroken(document) {
-  const body = document.getElementsByTagName('body')[0];
+function checkBoldBroken(terminal) {
+  const document = terminal.ownerDocument;
   const el = document.createElement('span');
   el.innerHTML = 'hello world';
-  body.appendChild(el);
+  terminal.appendChild(el);
   const w1 = el.scrollWidth;
   el.style.fontWeight = 'bold';
   const w2 = el.scrollWidth;
-  body.removeChild(el);
+  terminal.removeChild(el);
   return w1 !== w2;
 }