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 @pkeugine:

Unlock 14 remaining solutions by signing in and submitting your own entry
Created by: @johnreitano

1408 active golfers, 5728 entries

Solutions by @pkeugine:
10
#229 - PK / @pkeugine

07/10/2020 at 05:12AM

10
#>229 - PK / @pkeugine

07/10/2020 at 05:14AM

11
#>550 - PK / @pkeugine

07/10/2020 at 05:10AM

11
#>550 - PK / @pkeugine

07/10/2020 at 05:11AM

12
#>704 - PK / @pkeugine

07/10/2020 at 05:10AM

13
#>745 - PK / @pkeugine

07/10/2020 at 05:09AM

14
#>785 - PK / @pkeugine

07/10/2020 at 05:07AM

15
#>865 - PK / @pkeugine

07/10/2020 at 05:07AM

15
#>865 - PK / @pkeugine

07/10/2020 at 05:07AM

16
#>941 - PK / @pkeugine

07/10/2020 at 05:05AM

16
#>941 - PK / @pkeugine

07/10/2020 at 05:05AM

18
#>1060 - PK / @pkeugine

07/10/2020 at 05:03AM

20
#>1165 - PK / @pkeugine

07/10/2020 at 05:00AM

38
#>1391 - PK / @pkeugine

07/10/2020 at 04:57AM