Skip to content

Instantly share code, notes, and snippets.

@jams2

jams2/cycleParen.vim

Created May 9, 2019 16:15
Show Gist options

  • Select an option

    Learn more about clone URLs
  • Save jams2/b3eadf8e3c338ee14f35866aacfab7f0 to your computer and use it in GitHub Desktop.

Select an option

Learn more about clone URLs
Save jams2/b3eadf8e3c338ee14f35866aacfab7f0 to your computer and use it in GitHub Desktop.
Download ZIP

Revisions

  1. jams2 created this gist May 9, 2019.
    24 changes: 24 additions & 0 deletions cycleParen.vim
    View file
    Original file line number Diff line number Diff line change
    @@ -0,0 +1,24 @@
    """"""""""""""""""""""""""""""""""""""""""
    " Change matching pair of parens

    nnoremap <leader>cp :call CycleParens()<CR>
    function! CycleParens() abort
    let parens = ['[', '{', '(', ']', '}', ')']
    call CyclePairs(parens)
    endfunction

    function! CyclePairs(pairs) abort
    let cycleLen = len(a:pairs)
    let halfCycle = cycleLen / 2
    let currentChar = strcharpart(getline('.')[col('.') - 1:], 0, 1)
    let charIndex = index(a:pairs, currentChar)
    if charIndex == -1 | return | endif
    if charIndex + 1 == cycleLen || charIndex + 1 == halfCycle
    let nextChar = charIndex + 1 - halfCycle
    else
    let nextChar = charIndex + 1
    endif
    execute 'normal! %r' . a:pairs[(nextChar + halfCycle) % cycleLen] .
    \ '``r' . a:pairs[nextChar]
    endfunction