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 @r1chter19:

Unlock 9 remaining solutions by signing in and submitting your own entry
Created by: @johnreitano

1517 active golfers, 6208 entries

Solutions by @r1chter19:
10
#130 - Stefan Richter / @r1chter19

05/10/2020 at 10:47PM

11
#>528 - Stefan Richter / @r1chter19

05/10/2020 at 10:45PM

12
#>764 - Stefan Richter / @r1chter19

05/10/2020 at 10:43PM

14
#>846 - Stefan Richter / @r1chter19

05/10/2020 at 10:27PM

15
#>925 - Stefan Richter / @r1chter19

05/10/2020 at 10:18PM

16
#>1010 - Stefan Richter / @r1chter19

05/10/2020 at 10:17PM

16
#>1010 - Stefan Richter / @r1chter19

05/10/2020 at 10:25PM

17
#>1095 - Stefan Richter / @r1chter19

05/10/2020 at 10:14PM

19
#>1187 - Stefan Richter / @r1chter19

05/10/2020 at 10:04PM