Real Vim ninjas count every keystroke - do you?

Pick a challenge, fire up Vim, and show us what you got.

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$ gem install vimgolf
$ vimgolf setup
$ vimgolf put 5d5c4f742eb5c3000624f668

ASCII-art Histogram

Create an ASCCI-art histogram for the given numbers. Make sure not to leave trailing whitespaces. Thanks to VimGolf I recently discovered a feature of Vim thAT blew my mind. I'm curious to see what real ninjas make of it ;-)

Start file

 2  4  3  6  5  8  9  7  2  3  1

End file

                  [#]
               [#][#]
               [#][#][#]
         [#]   [#][#][#]
         [#][#][#][#][#]
   [#]   [#][#][#][#][#]
   [#][#][#][#][#][#][#]   [#]
[#][#][#][#][#][#][#][#][#][#]
[#][#][#][#][#][#][#][#][#][#][#]
 2  4  3  6  5  8  9  7  2  3  1

View Diff

0a1,10
> 
>                   [#]
>                [#][#]
>                [#][#][#]
>          [#]   [#][#][#]
>          [#][#][#][#][#]
>    [#]   [#][#][#][#][#]
>    [#][#][#][#][#][#][#]   [#]
> [#][#][#][#][#][#][#][#][#][#]
> [#][#][#][#][#][#][#][#][#][#][#]

Solutions by @martinodelilo:

Created by: @aigledesalpes Tweet

57 active golfers, 320 entries

Solutions by @martinodelilo: