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 5e4dfcccaa2db400090b66c3

prepend * to every non-blank line

Prepend an asterisk to every non-blank line in the input file.

Start file
This is a
very short

file, but it is 
still
full

of

surpises.
End file
*This is a
*very short

*file, but it is 
*still
*full

*of

*surpises.

View Diff

1,2c1,2
< This is a
< very short
---
> *This is a
> *very short
4,6c4,6
< file, but it is 
< still
< full
---
> *file, but it is 
> *still
> *full
8c8
< of
---
> *of
10c10
< surpises.
---
> *surpises.

Solutions by @raysden:

Unlock 8 remaining solutions by signing in and submitting your own entry
Created by: @johnreitano

1421 active golfers, 5776 entries

Solutions by @raysden:
11
#654 - Ray Dennis / @raysden

12/22/2020 at 11:54PM

12
#>724 - Ray Dennis / @raysden

12/22/2020 at 11:49PM

13
#>762 - Ray Dennis / @raysden

12/22/2020 at 11:46PM

14
#>819 - Ray Dennis / @raysden

12/22/2020 at 11:43PM

14
#>819 - Ray Dennis / @raysden

12/22/2020 at 11:45PM

15
#>901 - Ray Dennis / @raysden

12/22/2020 at 11:40PM

16
#>986 - Ray Dennis / @raysden

12/22/2020 at 11:39PM

19
#>1133 - Ray Dennis / @raysden

12/22/2020 at 11:32PM