From 0120df540afce7c083d3ca27cd6460117da12fe2 Mon Sep 17 00:00:00 2001
From: Corey Johnson & Nathan Sobo <cj+nathan@github.com>
Date: Thu, 2 Feb 2012 17:04:37 -0700
Subject: [PATCH] Lines remain syntax-highlighted when they are updated.

---
 spec/atom/editor-spec.coffee | 6 ++++++
 src/atom/editor.coffee       | 7 +------
 2 files changed, 7 insertions(+), 6 deletions(-)

diff --git a/spec/atom/editor-spec.coffee b/spec/atom/editor-spec.coffee
index 8ecb1ab47..c7707e076 100644
--- a/spec/atom/editor-spec.coffee
+++ b/spec/atom/editor-spec.coffee
@@ -39,6 +39,12 @@ describe "Editor", ->
       line12 = editor.lines.find('.line:eq(11)')
       expect(line12.find('span:eq(1)')).toMatchSelector '.keyword'
 
+    describe "when lines are updated in the buffer", ->
+      it "syntax highlights the updated lines", ->
+        expect(editor.lines.find('.line:eq(0) span:eq(0)')).toMatchSelector '.keyword.definition'
+        buffer.insert([0, 4], "g")
+        expect(editor.lines.find('.line:eq(0) span:eq(0)')).toMatchSelector '.keyword.definition'
+
   describe "cursor movement", ->
     describe ".setCursorPosition({row, column})", ->
       beforeEach ->
diff --git a/src/atom/editor.coffee b/src/atom/editor.coffee
index e2428eda8..86eded41a 100644
--- a/src/atom/editor.coffee
+++ b/src/atom/editor.coffee
@@ -133,12 +133,7 @@ class Editor extends Template
         @cursor.bufferChanged(e)
 
     updateLineElement: (row) ->
-      line = @buffer.getLine(row)
-      element = @getLineElement(row)
-      if line == ''
-        element.html('&nbsp;')
-      else
-        element.text(line)
+      @getLineElement(row).replaceWith(@buildLineElement(row))
 
     insertLineElement: (row) ->
       @getLineElement(row).before(@buildLineElement(row))