From 8f77211f049ce60ea176c77d8e0982f7e2c4de8b Mon Sep 17 00:00:00 2001
From: Corey Johnson & Nathan Sobo <cj+nathan@github.com>
Date: Wed, 9 May 2012 12:18:37 -0700
Subject: [PATCH] Cursor.getBeginningOfCurrentWordBufferPosition only uses the
 previous 2 lines for its scan range.

previous: editor.9000-line-file.at-end.move-to-beginning-of-word: 4695 / 100 = 46.95ms
new:      editor.9000-line-file.at-end.move-to-beginning-of-word: 1618 / 100 = 16.18ms
---
 src/app/cursor.coffee | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/src/app/cursor.coffee b/src/app/cursor.coffee
index 25689f589..408efc0cb 100644
--- a/src/app/cursor.coffee
+++ b/src/app/cursor.coffee
@@ -106,12 +106,16 @@ class Cursor extends View
   getBeginningOfCurrentWordBufferPosition: (options = {}) ->
     allowPrevious = options.allowPrevious ? true
     currentBufferPosition = @getBufferPosition()
+
+    previousRow = Math.max(0, currentBufferPosition.row - 1)
+    previousLinesRange = [[previousRow, 0], currentBufferPosition]
     beginningOfWordPosition = currentBufferPosition
-    range = [[0,0], currentBufferPosition]
-    @editor.backwardsScanInRange @wordRegex, range, (match, matchRange, { stop }) =>
+
+    @editor.backwardsScanInRange @wordRegex, previousLinesRange, (match, matchRange, { stop }) =>
       if matchRange.end.isGreaterThanOrEqual(currentBufferPosition) or allowPrevious
         beginningOfWordPosition = matchRange.start
       stop()
+
     beginningOfWordPosition
 
   getEndOfCurrentWordBufferPosition: (options = {}) ->