Question

I have a line like:

contact.psu_code = row[:psu_code] unless row[:psu_code].blank?

and I want to substitute psu_code with, say contact_disposition, like:

contact.contact_dispositon = row[:contact_disposition] unless row[:contact_disposition].blank?

where it substitutes only in the single line I’m on, with no confirmation. I know of %s/orig/sub but it’s cumbersome.

Answer 1

What do you mean, it’s cumbersome? If you want to do a search-and-replace on a single line, you don’t need to use %.

:s/psu_code/contact_disposition/g

Without g, Vim would stop after replacing a single occurrence. By specifying g, the replacement is done on the entire line.

If you want confirmation, add c to the options after g.

Here’s a convenience function for it:

function! LineReplace()
    let search = expand('<cword>')
    call inputsave()
    let replacement = input('')
    call inputrestore()
    call setline(line('.'), substitute(getline('.'), search, replacement, 'g'))
endfunction

nnoremap <leader>r :call LineReplace()<CR>

I mapped it to <leader>r, but you can easily change that to whatever keymapping you’d like.