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 9v006233d72d000000000219

Fix the shell script!

Fix the shell script with the fewest keystrokes!

Start file
#!/bin/bash
a = 5
b = 10
sum = $a + $b
echo $sum

mul = $a * $b
echo $mul
End file
#!/bin/bash
a=5
b=10
sum=$((a + b))
echo $sum

mul=$((a * b))
echo $mul

View Diff

2,4c2,4
< a = 5
< b = 10
< sum = $a + $b
---
> a=5
> b=10
> sum=$((a + b))
7c7
< mul = $a * $b
---
> mul=$((a * b))

Solutions by @Poustou_Flan:

Unlock 10 remaining solutions by signing in and submitting your own entry
Created by: @u_hossein

550 active golfers, 2373 entries

Solutions by @Poustou_Flan:
28
#143 - PoustouFlan / @Poustou_Flan

11/21/2022 at 07:51PM

28
#>143 - PoustouFlan / @Poustou_Flan

11/21/2022 at 08:15PM

29
#>190 - PoustouFlan / @Poustou_Flan

11/21/2022 at 07:44PM

30
#>225 - PoustouFlan / @Poustou_Flan

11/21/2022 at 07:43PM

31
#>257 - PoustouFlan / @Poustou_Flan

11/21/2022 at 07:41PM

32
#>268 - PoustouFlan / @Poustou_Flan

11/21/2022 at 07:39PM

33
#>279 - PoustouFlan / @Poustou_Flan

11/21/2022 at 07:27PM

36
#>336 - PoustouFlan / @Poustou_Flan

11/21/2022 at 07:25PM

42
#>390 - PoustouFlan / @Poustou_Flan

11/21/2022 at 07:23PM

47
#>435 - PoustouFlan / @Poustou_Flan

11/21/2022 at 07:19PM