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 4d1a34ccfa85f32065000004

Simple text editing with Vim

Make the pairs of lines match up by making each second line same as first

Start file
Make the pairs of lines match up by making each second line same as first:

# Appending text:
The name "Vim" is an acronym for "Vi IMproved"
The name "Vim" is an acronym for

# Editing text:
Vim is a text editor originally released by Bram Moolenaar in 1991 for the Amiga
Trivia: Vim is a text editor released by Bram Moolenaar in 1991 for the Amiga

# Deleting text:
Vim has a vi compatibility mode
Vim has a vi compatibility mode but when not in this mode Vim has many enhancements over vi
End file
Make the pairs of lines match up by making each second line same as first:

# Appending text:
The name "Vim" is an acronym for "Vi IMproved"
The name "Vim" is an acronym for "Vi IMproved"

# Editing text:
Vim is a text editor originally released by Bram Moolenaar in 1991 for the Amiga
Vim is a text editor originally released by Bram Moolenaar in 1991 for the Amiga

# Deleting text:
Vim has a vi compatibility mode
Vim has a vi compatibility mode

View Diff

5c5
< The name "Vim" is an acronym for
---
> The name "Vim" is an acronym for "Vi IMproved"
9c9
< Trivia: Vim is a text editor released by Bram Moolenaar in 1991 for the Amiga
---
> Vim is a text editor originally released by Bram Moolenaar in 1991 for the Amiga
13c13
< Vim has a vi compatibility mode but when not in this mode Vim has many enhancements over vi
---
> Vim has a vi compatibility mode

Solutions by @DoubleFelix_:

Unlock 11 remaining solutions by signing in and submitting your own entry
Created by: @igrigorik

3696 active golfers, 12815 entries

Solutions by @DoubleFelix_:
13
#346 - Felix / @DoubleFelix_

05/10/2015 at 03:06AM

13
#>346 - Felix / @DoubleFelix_

05/10/2015 at 03:07AM

14
#>1432 - Felix / @DoubleFelix_

05/10/2015 at 02:59AM

15
#>2096 - Felix / @DoubleFelix_

05/10/2015 at 02:58AM

15
#>2096 - Felix / @DoubleFelix_

05/10/2015 at 02:59AM

16
#>2234 - Felix / @DoubleFelix_

05/10/2015 at 02:57AM

17
#>2452 - Felix / @DoubleFelix_

05/10/2015 at 02:56AM

18
#>2617 - Felix / @DoubleFelix_

05/10/2015 at 02:55AM

19
#>2716 - Felix / @DoubleFelix_

05/10/2015 at 02:54AM

20
#>2795 - Felix / @DoubleFelix_

05/10/2015 at 02:53AM

21
#>2884 - Felix / @DoubleFelix_

05/10/2015 at 02:52AM