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 @jamzrob:

Unlock 7 remaining solutions by signing in and submitting your own entry
Created by: @johnreitano

1434 active golfers, 5829 entries

Solutions by @jamzrob:
17
#1023 - James Raubenheimer / @jamzrob

05/03/2020 at 04:26AM

18
#>1072 - James Raubenheimer / @jamzrob

05/03/2020 at 04:25AM

19
#>1117 - James Raubenheimer / @jamzrob

05/03/2020 at 04:24AM

20
#>1169 - James Raubenheimer / @jamzrob

05/03/2020 at 04:23AM

21
#>1231 - James Raubenheimer / @jamzrob

05/03/2020 at 04:22AM

25
#>1346 - James Raubenheimer / @jamzrob

05/03/2020 at 04:21AM

26
#>1364 - James Raubenheimer / @jamzrob

05/03/2020 at 04:20AM