Re: write to a separate file via an external filter

David Fishburn wrote:
> Vim 7.4.446 Windows 7 32 bit
>
> In an autocmd (BufWritePost) I would like to create a new file and
> pass the contents of the current file through some OS program (like
> sort for example).
>
> So consider I have this file:
> :e dave.txt
> 3
> 2
> 1
>
> Now, when I press :w
>
> My BufWritePost event fires.
>
> In that event I want to create:
> dave.txt.post
>
> And I want to send the contents of dave.txt through some external
> program (I will sort in this example since it exists on all platforms,
> I do not actually want to sort the output or I would use sort() ).
>
> From a terminal I would do something like this to give you the idea I
> want:
> sort < dave.txt >dave.txt.post
>
> I don't really want to open this file in a Vim buffer, I just want to
> write the contents of the file (currently open in Vim) through some
> external program and into a new filename.
>
> This is allows me to send the contents of the current buffer through
> an external filter, but then I have modified my current buffer (which
> I do not want).
> %!sort
>
> I thought this would be closer:
> %!sort>dave.txt.post
>
> But it does not create dave.txt.post
>
> I assume there is a way to do this, just can't get the syntax correct.
>
Does dave.txt.post contain the current buffer's contents? If so, you
could probably use exe + system().

Regards,
Chip

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