How to replace CSV column separators with numbered labels in Vim?

Question

I want to replace a series of pipeline characters with different values. How would I do this with regular expressions?

Example:

This | is | a | sentenc         


        

Answer 1

Define a function:

fun CountUp()
  let ret = g:i
  let g:i = g:i + 1
  return ret
endf

Now, use:

:let i = 1 | %s/|/\="new" . CountUp()/g