Add columnCounts to selection methods

spec/editor-spec.coffee

@@ -969,6 +969,27 @@ describe "Editor", ->
         expect(selection1.getScreenRange()).toEqual([[0, 9], [1, 21]])
         expect(selection1.isReversed()).toBeFalsy()
 
+      describe "when counts are passed into the selection functions", ->
+        it "expands each selection to its cursor's new location", ->
+          editor.setSelectedBufferRanges([[[0,9], [0,13]], [[3,16], [3,21]]])
+          [selection1, selection2] = editor.getSelections()
+
+          editor.selectRight(2)
+          expect(selection1.getBufferRange()).toEqual [[0,9], [0,15]]
+          expect(selection2.getBufferRange()).toEqual [[3,16], [3,23]]
+
+          editor.selectLeft(3)
+          expect(selection1.getBufferRange()).toEqual [[0,9], [0,12]]
+          expect(selection2.getBufferRange()).toEqual [[3,16], [3,20]]
+
+          editor.selectDown(3)
+          expect(selection1.getBufferRange()).toEqual [[0,9], [3,12]]
+          expect(selection2.getBufferRange()).toEqual [[3,16], [6,20]]
+
+          editor.selectUp(2)
+          expect(selection1.getBufferRange()).toEqual [[0,9], [1,12]]
+          expect(selection2.getBufferRange()).toEqual [[3,16], [4,20]]
+
     describe ".selectToBufferPosition(bufferPosition)", ->
       it "expands the last selection to the given position", ->
         editor.setSelectedBufferRange([[3, 0], [4, 5]])

src/editor.coffee

@@ -1982,7 +1982,7 @@ class Editor extends Model
   # Essential: Move the cursor of each selection one character upward while
   # preserving the selection's tail position.
   #
-  # * `rowCount` {Number} of rows to select up
+  # * `rowCount` (optional) {Number} number of rows to select (default: 1)
   #
   # This method may merge selections that end up intesecting.
   selectUp: (rowCount) ->
@@ -1991,7 +1991,7 @@ class Editor extends Model
   # Essential: Move the cursor of each selection one character downward while
   # preserving the selection's tail position.
   #
-  # * `rowCount` {Number} of rows to select down
+  # * `rowCount` (optional) {Number} number of rows to select (default: 1)
   #
   # This method may merge selections that end up intesecting.
   selectDown: (rowCount) ->
@@ -2000,16 +2000,20 @@ class Editor extends Model
   # Essential: Move the cursor of each selection one character leftward while
   # preserving the selection's tail position.
   #
+  # * `columnCount` (optional) {Number} number of columns to select (default: 1)
+  #
   # This method may merge selections that end up intesecting.
-  selectLeft: ->
-    @expandSelectionsBackward (selection) -> selection.selectLeft()
+  selectLeft: (columnCount) ->
+    @expandSelectionsBackward (selection) -> selection.selectLeft(columnCount)
 
   # Essential: Move the cursor of each selection one character rightward while
   # preserving the selection's tail position.
   #
+  # * `columnCount` (optional) {Number} number of columns to select (default: 1)
+  #
   # This method may merge selections that end up intesecting.
-  selectRight: ->
-    @expandSelectionsForward (selection) -> selection.selectRight()
+  selectRight: (columnCount) ->
+    @expandSelectionsForward (selection) -> selection.selectRight(columnCount)
 
   # Essential: Select from the top of the buffer to the end of the last selection
   # in the buffer.

src/selection.coffee

@@ -198,18 +198,26 @@ class Selection extends Model
     @modifySelection => @cursor.setBufferPosition(position)
 
   # Public: Selects the text one position right of the cursor.
-  selectRight: ->
-    @modifySelection => @cursor.moveRight()
+  #
+  # * `columnCount` (optional) {Number} number of columns to select (default: 1)
+  selectRight: (columnCount) ->
+    @modifySelection => @cursor.moveRight(columnCount)
 
   # Public: Selects the text one position left of the cursor.
-  selectLeft: ->
-    @modifySelection => @cursor.moveLeft()
+  #
+  # * `columnCount` (optional) {Number} number of columns to select (default: 1)
+  selectLeft: (columnCount) ->
+    @modifySelection => @cursor.moveLeft(columnCount)
 
   # Public: Selects all the text one position above the cursor.
+  #
+  # * `rowCount` (optional) {Number} number of rows to select (default: 1)
   selectUp: (rowCount) ->
     @modifySelection => @cursor.moveUp(rowCount)
 
   # Public: Selects all the text one position below the cursor.
+  #
+  # * `rowCount` (optional) {Number} number of rows to select (default: 1)
   selectDown: (rowCount) ->
     @modifySelection => @cursor.moveDown(rowCount)