Real Vim ninjas count every keystroke - do you?

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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 @iam_funky_koval:

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

490 active golfers, 2047 entries

Solutions by @iam_funky_koval:
28
#122 - funky_koval / @iam_funky_koval

05/15/2022 at 01:14PM

29
#>158 - funky_koval / @iam_funky_koval

05/15/2022 at 01:11PM

30
#>187 - funky_koval / @iam_funky_koval

05/15/2022 at 01:09PM

31
#>219 - funky_koval / @iam_funky_koval

05/15/2022 at 01:04PM

32
#>235 - funky_koval / @iam_funky_koval

05/15/2022 at 01:02PM

39
#>319 - funky_koval / @iam_funky_koval

05/15/2022 at 11:00AM

48
#>389 - funky_koval / @iam_funky_koval

05/15/2022 at 10:58AM