Insert command result into vim command

Question

I'd like to find and replace some text with other text which consist the result of the shell command. This is my trial, which is not working:

:40,43s/'height': 650/'height': system('python -c "import random; print(random.randint(500, 600))"')/g

Vim don't want to evaluate system('python -c "import random; print(random.randint(500, 600)') part.

Please help me to fix this

Kent · Accepted Answer · 2017-10-25 08:39:28Z

4

Your "shell command" is not correct!

you should at least check if those quotes (' and ") in your command are paired
you should at least check if all brackets (..) in your command are paired.

For the vim :s command, you should use \= to get the result of an expression. Read :h :s\= for details.

Your example:

:40,43s/\v('height':) 650/\=submatch(1)." ".system('python -c "import random; print(random.randint(500, 600))"')/

Your command was fixed in above line.

answered Oct 25, 2017 at 8:39

Kent

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1 Comment

zhukovgreen Over a year ago

Just a little edit to remove trailing newline when command returns a number: :68,77s/\v('height':) 650/\=submatch(1)." ".system('python -c "import random; print(random.randint(500, 600))"')[:-2]/

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