Re: how to align the comments to start from the same column?

[Dan Nicolaescu <dann@ics.uci.edu>]

"William Xue" <william.xue@gmail.com> writes:

  > Hi,
  > when I am coding in cpp files, I will use M-; to make some comments,
  > like  following:
  > 
  >                         IoCreateFileSpecifyDeviceObjectHint(&h_rd_file,
  > //  file handle
  >                                                             GENERIC_READ
  > |  GENERIC_WRITE, // desire access
  >                                                             &rd_file_obj_attr,
  > // object attributes
  >                                                             &rd_io_status_block,
  > // io status block
  >                                                             0, //
  > allocation size
  >                                                             FILE_ATTRIBUTE_NORMAL,
  > // file attributes
  >                                                             FILE_SHARE_READ,
  > // share access
  > 
  > Is there a way to format the comments to the same column?
  > 
  > I want something like:
  > 
  > 1. select the codes as a region
  > 2. press a magic keybinding
  > 3. the comments align to the longest column of comments in the region.


You can find this package: 

;;; bc-mode.el --- Minor mode for formatting right-margin block comments.
;;
;; Copyright (C) 1991-1996 Steve Burgett <burgett@eecs.berkeley.edu>
;; $Id: bc-mode.el,v 1.1 1996/10/19 18:54:00 burgett Exp burgett $
;;
;; Author: Steve Burgett <burgett@eecs.berkeley.edu>
;; Created: July 1992
;; Version: 1.1
;; Keywords: comment minor-mode programming editing
;; HTTP: http://robotics.eecs.berkeley.edu/~burgett/

It has very sophisticated comment handling, I think it does what you want.