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" File:         ftplugin/markdown.vim
" Maintainer:   Andrew Nechaev <i@geekfrom.ru>
" Version:      0.0.1
" Modified:     2022-05-13 18:30+0400
" License:      MIT
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nnoremap <buffer> <silent> <Leader>t :call winrestview(<SID>toggle('^\s*[-+*]\s*[\[(]\zs.\ze[\])]', {' ': 'x', 'x': '-', '-': ' '}))<cr>
vnoremap <buffer> <silent> <Leader>t :call winrestview(<SID>toggle('^\s*[-+*]\s*[\[(]\zs.\ze[\])]', {' ': 'x', 'x': '-', '-': ' '}))<cr>

nnoremap <buffer> <silent> <Leader>r :call winrestview(<SID>toggleState('(', '( ) '))<cr>
vnoremap <buffer> <silent> <Leader>r :call winrestview(<SID>toggleState('(', '( ) '))<cr>
nnoremap <buffer> <silent> <Leader>c :call winrestview(<SID>toggleState('[', '[ ] '))<cr>
vnoremap <buffer> <silent> <Leader>c :call winrestview(<SID>toggleState('[', '[ ] '))<cr>

set tabstop=2 softtabstop=2 shiftwidth=2 expandtab

function s:toggle(pattern, dict, ...)
  let view = winsaveview()
  execute 'keeppatterns s/' . a:pattern . '/\=get(a:dict, submatch(0), a:0 ? a:1 : " ")/e'
  return view
endfunction

function s:toggleState(search, replacement)
  let view = winsaveview()
  execute 'keeppatterns s/^\s*\(-\s*\|+\s*\|*\s\)\?\zs\(\[.\]\|(.)\)\?\s*\ze/\=match(submatch(0), a:search) != -1 ? "" :  a:replacement/e'
  return view
endfunction