meta-] indents selected lines

src/app/composite-selection.coffee

@@ -91,6 +91,9 @@ class CompositeSeleciton
   insertText: (text) ->
     @mutateSelectedText (selection) -> selection.insertText(text)
 
+  indentSelectedRows: ->
+    @mutateSelectedText (selection) -> selection.indentSelectedRows()
+
   backspace: ->
     @mutateSelectedText (selection) -> selection.backspace()
 

src/app/editor.coffee

@@ -66,6 +66,7 @@ class Editor extends View
     @on 'select-down', => @selectDown()
     @on 'newline', => @insertText("\n")
     @on 'tab', => @insertTab()
+    @on 'indent-selected-rows', => @indentSelectedRows()
     @on 'backspace', => @backspace()
     @on 'backspace-to-beginning-of-word', => @backspaceToBeginningOfWord()
     @on 'delete', => @delete()
@@ -424,6 +425,9 @@ class Editor extends View
     else
       @compositeSelection.insertText('\t')
 
+  indentSelectedRows: ->
+    @compositeSelection.indentSelectedRows()
+
   cutSelection: -> @compositeSelection.cut()
   copySelection: -> @compositeSelection.copy()
   paste: -> @insertText($native.readFromPasteboard())

src/app/keymaps/editor.coffee

@@ -29,3 +29,4 @@ window.keymap.bindKeys '.editor',
   'alt-meta-right': 'split-right'
   'alt-meta-up': 'split-up'
   'alt-meta-down': 'split-down'
+  'meta-]': 'indent-selected-rows'

src/app/selection.coffee

@@ -105,6 +105,11 @@ class Selection extends View
     @autoOutdentText() if shouldOutdent
     @clearSelection()
 
+  indentSelectedRows: ->
+    range = @getBufferRange()
+    for row in [range.start.row..range.end.row]
+      @editor.buffer.insert([row, 0], @editor.tabText) unless @editor.buffer.lineLengthForRow(row) == 0
+
   autoIndentText: (text) ->
     if @editor.autoIndent
       mode = @editor.getCurrentMode()