Donn,
On Sun 13-Aug-06 6:22am -0600, you wrote:
> ********************************************************************
> command DiffOrig vert new | set bt=nofile | r # | 0d* | diffthis |
> \ wincmd p | diffthis
> ********************************************************************
>
> I have a question? That is under Vim (I suppose 7) what, where how
> does this fit? What does it do?
>
> Is "command" the binary or a comment/text? Is this a Win or Unix or
> both command? I did see .vimrc which seems to imply Unix/Linux.
Diff mode was introduced in Version 6. The above command will run in
either version of Vim/Gvim 6.4/7.0 and on Win and Unix.
A good place to start understanding Vim programming of maps, commands,
functions, etc. is the user manual:
:h user-manual
The section Tuning Vim gets into this sort of programming. In
particular, for the user manual section on commands:
:h 40.2
Along with the user manual is the reference manual. For the section
covering :command:
:h user-commands
BTW, in the command definition above, "0d*" should be "0d_" (it
deletes the empty first line to the black whole register). I believe
that for the :d command "0d_" is exactly equivalent to "1d_".
You can see exactly what DiffOrig does by typing the 7 commands
yourself.
Start off editing a file from disk. Make a small change to the edit
buffer (and don't save it). Now type each of the command line
commands followed by a <CR> (I've added the first set command for a
reason which will be obvious):
:set co=999 lines=99
:vert new
:set bt=nofile
:r #
:0d_
:diffthis
:wincmd p
:diffthis
You can read about each command from the help feature:
:h :set
:h 'co'
:h 'lines'
:h :vert
:h :new
:h 'bt'
:h :r
:h :_#
:h alternate-file
:h :d
:h quote_
:h :diffthis
:h :wincmd
:h ctrl-w_p
--
Best regards,
Bill
