text: import sublime
  import sublime_plugin
  try:
      from GitGutter.view_collection import ViewCollection
  except ImportError:
      from view_collection import ViewCollection
  
  
  class GitGutterBaseChangeCommand(sublime_plugin.WindowCommand):
  
      def lines_to_blocks(self, lines):
          blocks = []
          last_line = -2
          for line in lines:
              if line > last_line + 1:
                  blocks.append(line)
              last_line = line
          return blocks
  
      def run(self):
          view = self.window.active_view()
  
          inserted, modified, deleted = ViewCollection.diff(view)
          inserted = self.lines_to_blocks(inserted)
          modified = self.lines_to_blocks(modified)
          all_changes = sorted(inserted + modified + deleted)
          if all_changes:
              row, col = view.rowcol(view.sel()[0].begin())
  
              current_row = row + 1
  
              line = self.jump(all_changes, current_row)
  
              self.window.active_view().run_command("goto_line", {"line": line})
  
  
  class GitGutterNextChangeCommand(GitGutterBaseChangeCommand):
  
      def jump(self, all_changes, current_row):
          return next((change for change in all_changes
                      if change > current_row), all_changes[0])
  
  
  class GitGutterPrevChangeCommand(GitGutterBaseChangeCommand):
  
      def jump(self, all_changes, current_row):
          return next((change for change in reversed(all_changes)
                      if change < current_row), all_changes[-1])
  