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

["William Xue" <william.xue@gmail.com>]

On Tue, 10 Jul 2007 21:41:03 +0800, Stefan Monnier  
<monnier@iro.umontreal.ca> 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