Split a block to multiple lines with respecting indenting

Question

Context is Ruby. Lets say I have a long line which has a block which I want to have simply in multiple lines:

let:(variable) { do.some.stuff(expressed_as_a_long_line { x }) }

I'd like split this into multiple lines like this

let:(variable) {
  do.some.stuff(expressed_as_a_long_line { x }) 
}

...and later maybe even:

let:(variable) {
  do.some.stuff(
    expressed_as_a_long_line { x }
  ) 
}

Is there any simple inbuilt way or plugin for similar stuff?

Answer 1

The plugin splitjoin.vim is designed to do this and has support for ruby. https://github.com/AndrewRadev/splitjoin.vim

For a vanilla solution:

function! OpenCode()
    call searchpair('{\|(', '', ')\|}', 'bW')
    exe 'normal!' "%i\<c-m>\<esc>%a\<c-m>\<esc>\<c-o>m]"
    normal! '[=']
    let l:save_slash = @/
    :'[,']s/\s\+$//e
    let @/ = l:save_slash
endfunction
nnoremap <c-b> :<c-u>call OpenCode()<cr>

Pressing Ctrl-B when inside a block will open it up.