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

[William Xue]

On Tue, 10 Jul 2007 21:41:03 +0800, Stefan Monnier  
<address@hidden> wrote:

> > 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.
>
> The Emacs-22.1 version of M-; already tries to align comments on
> neighbouring lines.  This feature has been slightly improved in  
> Emacs-CVS,
> but if it doesn't work for you in Emacs-22.1, then it probably won't work
> any better in Emacs-CVS.
>
> The most likely reason why it may appear not to work is that it only  
> aligns
> comments if it can do so without pushing them past the  
> `comment-fill-column'
> (which defaults to `fill-column').  So try setting this value to  
> something
> larger (or better yet: reformat your code so as not to use so many
> columns ;-).

enlarged the value do a litter neat.

but like the following codes:
---8<--------------------------------------------->8---
BOOLEAN RDFastIoReadCompressed(IN PFILE_OBJECT FileObject,   //
                               IN PLARGE_INTEGER FileOffset, //
                               IN ULONG Length,              //
                               IN ULONG LockKey,             //
                               OUT PVOID Buffer,             //
                               OUT PMDL* MdlChain,           //
                               IN OUT PIO_STATUS_BLOCK  
IoStatus,             //
                               OUT COMPRESSED_DATA_INFO*  
CompressedDataInfo, //
                               IN ULONG  
CompressedDataInfoLength,            //
                               IN PDEVICE_OBJECT  
DeviceObject)               //
{
        return FALSE;
}
---8<--------------------------------------------->8---

the '//' of MdlChain could not be a row to  IoStatus's.

it seems M-; could not back-reference in some situation.

>         Stefan



--
Sincerely yours,
William