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Let's say I have the following script:

sudo apt update
sudo apt upgrade
sudo apt install jq
sudo apt install jo

If I use the command :set makeprg=bash\ % | make inside Vim, the system will ask me my password and then it'll execute this entire script. However, I'd like to find a way of executing only the lines that I select... Let's say I go to the third line inside this file and I press V to select only the third line, is there any way of making Vim execute interactively only this line?

2

A couple:

  • :[range]w !{program} uses a range to only write selected lines as standard input. This doesn’t work if you need to run it differently.
  • ! is similar but replaces the range with the output.
  • Delete the non-interesting lines, write the file, and run it. Then undo and write again.
  • You could probably make an operator and visual mapping that ran bash -c …, but you would want to think about using single quotes, escaping them in the arguments, and maybe even joining lines together.
  • Run :terminal for a shell and copy-paste
  • Run :terminal <C-r>=getline('.') to directly run the current line (no shell)
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  • Interesting that ! doesn't require saving the file as it usually does when I'm working with selected lines. I didn't manage to make :[range]w !{program} work though. does the range word mean the line numbers? What does the {program} syntax do? I've tried stuff like :[4-7]w !{%}, :[4-7]w !{program} and the literal :[range]w !{program}... But it's not clear to me how I'd use it...
    – raylight
    Jun 22 '21 at 3:37
  • 1
    Those are placeholders @raylight See :help range. Replace the curly braces too with your program name (eg bash)
    – D. Ben Knoble
    Jun 22 '21 at 11:02

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