Replace mentions of 'anchor' with 'tail' in selection and its spec

spec/app/selection-spec.coffee

@@ -40,7 +40,7 @@ describe "Selection", ->
         expect(buffer.lineForRow(0)).toBe "v;"
         expect(selection.isEmpty()).toBeTruthy()
 
-    describe "when the cursor precedes the anchor", ->
+    describe "when the cursor precedes the tail", ->
       it "deletes selected text and clears the selection", ->
         selection.cursor.setScreenPosition [0,13]
         selection.selectToScreenPosition [0,4]
@@ -50,7 +50,7 @@ describe "Selection", ->
         expect(selection.isEmpty()).toBeTruthy()
 
   describe ".isReversed()", ->
-    it "returns true if the cursor precedes the anchor", ->
+    it "returns true if the cursor precedes the tail", ->
       selection.cursor.setScreenPosition([0, 20])
       selection.selectToScreenPosition([0, 10])
       expect(selection.isReversed()).toBeTruthy()
@@ -58,7 +58,7 @@ describe "Selection", ->
       selection.selectToScreenPosition([0, 25])
       expect(selection.isReversed()).toBeFalsy()
 
-  describe "when only the selection's anchor is moved (regression)", ->
+  describe "when only the selection's tail is moved (regression)", ->
     it "emits the 'screen-range-changed' event", ->
       selection.setBufferRange([[2, 0], [2, 10]], reverse: true)
       changeScreenRangeHandler = jasmine.createSpy('changeScreenRangeHandler')

src/app/selection.coffee

@@ -1,5 +1,4 @@
 Range = require 'range'
-Anchor = require 'anchor'
 EventEmitter = require 'event-emitter'
 _ = require 'underscore'
 
@@ -335,16 +334,12 @@ class Selection
 
   modifySelection: (fn) ->
     @retainSelection = true
-    @editSession.placeMarkerTail(@marker)
-#     @anchor.pauseEvents()
-#     @cursor.pauseEvents()
+    @placeTail()
     fn()
-#     @anchor.resumeEvents()
-#     @cursor.resumeEvents()
     @retainSelection = false
 
-#   placeAnchor: ->
-#     @anchor.on 'moved.selection', => @screenRangeChanged()
+  placeTail: ->
+    @editSession.placeMarkerTail(@marker)
 
   intersectsBufferRange: (bufferRange) ->
     @getBufferRange().intersectsWith(bufferRange)