From 9bdc78df2eb83bafb17ee304d1d149689d91d1fa Mon Sep 17 00:00:00 2001
From: Nathan Sobo <nathan@github.com>
Date: Wed, 9 Apr 2014 17:20:22 -0600
Subject: [PATCH] Correctly render lines containing only whitespace

---
 spec/editor-component-spec.coffee | 12 ++++++++++++
 src/token.coffee                  |  4 ++--
 2 files changed, 14 insertions(+), 2 deletions(-)

diff --git a/spec/editor-component-spec.coffee b/spec/editor-component-spec.coffee
index 09d280b69..402a14f50 100644
--- a/spec/editor-component-spec.coffee
+++ b/spec/editor-component-spec.coffee
@@ -82,6 +82,18 @@ describe "EditorComponent", ->
         expect(line2LeafNodes[2].textContent).toBe '  '
         expect(line2LeafNodes[2].classList.contains('indent-guide')).toBe true
 
+      it "renders indent guides correctly on lines containing only whitespace", ->
+        editor.getBuffer().insert([1, Infinity], '\n      ')
+        lines = node.querySelectorAll('.line')
+        line2LeafNodes = getLeafNodes(lines[2])
+        expect(line2LeafNodes.length).toBe 3
+        expect(line2LeafNodes[0].textContent).toBe '  '
+        expect(line2LeafNodes[0].classList.contains('indent-guide')).toBe true
+        expect(line2LeafNodes[1].textContent).toBe '  '
+        expect(line2LeafNodes[1].classList.contains('indent-guide')).toBe true
+        expect(line2LeafNodes[2].textContent).toBe '  '
+        expect(line2LeafNodes[2].classList.contains('indent-guide')).toBe true
+
       getLeafNodes = (node) ->
         if node.children.length > 0
           flatten(toArray(node.children).map(getLeafNodes))
diff --git a/src/token.coffee b/src/token.coffee
index f42c5a9cc..aabd60bdb 100644
--- a/src/token.coffee
+++ b/src/token.coffee
@@ -144,7 +144,7 @@ class Token
       leadingHtml = ''
       trailingHtml = ''
 
-      if @hasLeadingWhitespace and match = LeadingWhitespaceRegex.exec(@value)
+      if @hasLeadingWhitespace and not @hasTrailingWhitespace and match = LeadingWhitespaceRegex.exec(@value)
         classes = 'leading-whitespace'
         classes += ' indent-guide' if hasIndentGuide
         classes += ' invisible-character' if invisibles.space
@@ -156,7 +156,7 @@ class Token
 
       if @hasTrailingWhitespace and match = TrailingWhitespaceRegex.exec(@value)
         classes = 'trailing-whitespace'
-        classes += ' indent-guide' if hasIndentGuide and not @hasLeadingWhitespace
+        classes += ' indent-guide' if hasIndentGuide and @hasLeadingWhitespace
         classes += ' invisible-character' if invisibles.space
 
         match[0] = match[0].replace(CharacterRegex, invisibles.space) if invisibles.space