Add selection counterparts to move next/prev word boundary

spec/app/edit-session-spec.coffee

@@ -698,6 +698,46 @@ describe "EditSession", ->
         expect(selection2.getBufferRange()).toEqual [[3,48], [3,51]]
         expect(selection2.isReversed()).toBeFalsy()
 
+    describe ".selectToPreviousWordBoundry()", ->
+      it "select to the previous word boundry", ->
+        editSession.setCursorBufferPosition [0, 8]
+        editSession.addCursorAtBufferPosition [2, 0]
+        editSession.addCursorAtBufferPosition [3, 4]
+        editSession.addCursorAtBufferPosition [3, 14]
+
+        editSession.selectToPreviousWordBoundry()
+
+        expect(editSession.getSelections().length).toBe 4
+        [selection1, selection2, selection3, selection4] = editSession.getSelections()
+        expect(selection1.getBufferRange()).toEqual [[0,8], [0,4]]
+        expect(selection1.isReversed()).toBeTruthy()
+        expect(selection2.getBufferRange()).toEqual [[2,0], [1,30]]
+        expect(selection2.isReversed()).toBeTruthy()
+        expect(selection3.getBufferRange()).toEqual [[3,4], [3,0]]
+        expect(selection3.isReversed()).toBeTruthy()
+        expect(selection4.getBufferRange()).toEqual [[3,14], [3,13]]
+        expect(selection4.isReversed()).toBeTruthy()
+
+    describe ".selectToNextWordBoundry()", ->
+      it "select to the next word boundry", ->
+        editSession.setCursorBufferPosition [0, 8]
+        editSession.addCursorAtBufferPosition [2, 40]
+        editSession.addCursorAtBufferPosition [4, 0]
+        editSession.addCursorAtBufferPosition [3, 30]
+
+        editSession.selectToNextWordBoundry()
+
+        expect(editSession.getSelections().length).toBe 4
+        [selection1, selection2, selection3, selection4] = editSession.getSelections()
+        expect(selection1.getBufferRange()).toEqual [[0,8], [0,13]]
+        expect(selection1.isReversed()).toBeFalsy()
+        expect(selection2.getBufferRange()).toEqual [[2,40], [3,0]]
+        expect(selection2.isReversed()).toBeFalsy()
+        expect(selection3.getBufferRange()).toEqual [[4,0], [4,4]]
+        expect(selection3.isReversed()).toBeFalsy()
+        expect(selection4.getBufferRange()).toEqual [[3,30], [3,31]]
+        expect(selection4.isReversed()).toBeFalsy()
+
     describe ".selectWord()", ->
       describe "when the cursor is inside a word", ->
         it "selects the entire word", ->

src/app/edit-session.coffee

@@ -1156,6 +1156,12 @@ class EditSession
   selectToEndOfLine: ->
     @expandSelectionsForward (selection) => selection.selectToEndOfLine()
 
+  selectToPreviousWordBoundry: ->
+    @expandSelectionsBackward (selection) => selection.selectToPreviousWordBoundry()
+
+  selectToNextWordBoundry: ->
+    @expandSelectionsForward (selection) => selection.selectToNextWordBoundry()
+
   # Selects the current line.
   selectLine: ->
     @expandSelectionsForward (selection) => selection.selectLine()

src/app/selection.coffee

@@ -214,6 +214,14 @@ class Selection
   selectToBeginningOfNextWord: ->
     @modifySelection => @cursor.moveToBeginningOfNextWord()
 
+  # Selects text to the previous word boundry.
+  selectToPreviousWordBoundry: ->
+    @modifySelection => @cursor.moveToPreviousWordBoundry()
+
+  # Selects text to the next word boundry.
+  selectToNextWordBoundry: ->
+    @modifySelection => @cursor.moveToNextWordBoundry()
+
   # Moves the selection down one row.
   addSelectionBelow: ->
     range = (@goalBufferRange ? @getBufferRange()).copy()