Add editor:add-selection-above command

src/app/edit-session.coffee

@@ -770,6 +770,9 @@ class EditSession
   addSelectionBelow: ->
     @expandSelectionsForward (selection) => selection.addSelectionBelow()
 
+  addSelectionAbove: ->
+    @expandSelectionsBackward (selection) => selection.addSelectionAbove()
+
   transpose: ->
     @mutateSelectedText (selection) =>
       if selection.isEmpty()

src/app/editor.coffee

@@ -124,6 +124,7 @@ class Editor extends View
       'editor:select-to-end-of-word': @selectToEndOfWord
       'editor:select-to-beginning-of-word': @selectToBeginningOfWord
       'editor:add-selection-below': @addSelectionBelow
+      'editor:add-selection-above': @addSelectionAbove
       'editor:select-line': @selectLine
       'editor:transpose': @transpose
       'editor:upper-case': @upperCase
@@ -214,6 +215,7 @@ class Editor extends View
   selectToBeginningOfLine: -> @activeEditSession.selectToBeginningOfLine()
   selectToEndOfLine: -> @activeEditSession.selectToEndOfLine()
   addSelectionBelow: -> @activeEditSession.addSelectionBelow()
+  addSelectionAbove: -> @activeEditSession.addSelectionAbove()
   selectToBeginningOfWord: -> @activeEditSession.selectToBeginningOfWord()
   selectToEndOfWord: -> @activeEditSession.selectToEndOfWord()
   selectWord: -> @activeEditSession.selectWord()

src/app/keymaps/editor.cson

@@ -10,6 +10,7 @@
   'ctrl-{': 'editor:fold-all'
   'ctrl-}': 'editor:unfold-all'
   'ctrl-shift-down': 'editor:add-selection-below'
+  'ctrl-shift-up': 'editor:add-selection-above'
   'alt-meta-ctrl-f': 'editor:fold-selection'
   'shift-tab': 'editor:outdent-selected-rows'
   'meta-[': 'editor:outdent-selected-rows'

src/app/selection.coffee

@@ -169,6 +169,23 @@ class Selection
       @editSession.addSelectionForBufferRange(range, goalBufferRange: range, suppressMerge: true)
       break
 
+  addSelectionAbove: ->
+    range = (@goalBufferRange ? @getBufferRange()).copy()
+    previousRow = range.end.row - 1
+
+    for row in [previousRow..0]
+      range.start.row = row
+      range.end.row = row
+      clippedRange = @editSession.clipBufferRange(range)
+
+      if range.isEmpty()
+        continue if range.end.column > 0 and clippedRange.end.column is 0
+      else
+        continue if clippedRange.isEmpty()
+
+      @editSession.addSelectionForBufferRange(range, goalBufferRange: range, suppressMerge: true)
+      break
+
   insertText: (text, options={}) ->
     oldBufferRange = @getBufferRange()
     @editSession.destroyFoldsContainingBufferRow(oldBufferRange.end.row)