Re: Filter-like command -- but to insert instead of replacing

Sylvain Leroux wrote:

> I finally decided to post here as I can't find the solution by myself.
> I'm looking for a way to use some range of the buffer as input to an
> external command, and *inserting* the command output into the buffer.
>
> I'm aware of the `!` command but it doesn't match my need as it
> *replaces* the original data. I want to keep them. The `r!` command
> doesn't match either as (AFAIK) you cannot send data from the buffer
> as input to the command.
>
> To make things more clear here is a typical use case
> (I use the `wc` command for illustration purpose only):
>
> == Original buffer ==============
> Mar 2016 1.78%
> Apr 2016 1.65%
> May 2016 1.79%
> Jun 2016 2.02%
> Jul 2016 2.33%
>
> Linux Market Share on Desktop
> =================================
>
> == Command (??? denotes the mystery command I'm looking for)
> :1,/^$/-1 ??? wc -l
>
> == Expected buffer ==============
> 5
> Mar 2016 1.78%
> Apr 2016 1.65%
> May 2016 1.79%
> Jun 2016 2.02%
> Jul 2016 2.33%
> Mar 2016 1.78%
> Apr 2016 1.65%
> May 2016 1.79%
> Jun 2016 2.02%
> Jul 2016 2.33%
>
> Linux Market Share on Desktop
> =================================
>
>
> Any idea on how to achieve that? If there isn't any Vim command to do
> that directly, maybe using a register? As you can see, any help or
> pointer to the right direction would be greatly appreciated.

I don't think it can be done with one command. Simplest seems to be to
copy the text and then filter it.
(visually select the text)
YP
gv
:!filter-command

Would not be a bad idea to have an Ex command for this. Not sure what
to call it, :feed perhaps? :writeread ?

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