Automatically close, skip and remove matching pairs in insert-mode

autopair.vim

vim9script

# Auto-close parentheses
inoremap (     ()<c-g>U<left>
inoremap [     []<c-g>U<left>
inoremap {     {}<c-g>U<left>
inoremap <     <><c-g>U<left>
inoremap (<cr> (<cr>)<esc>O
inoremap {<cr> {<cr>}<esc>O
inoremap [<cr> [<cr>]<esc>O
inoremap {;    {<cr>};<esc>O

# Remove matching pairs
inoremap <expr> <c-h> col('.') > 1 && getline('.')[charcol('.') - 2 : charcol('.') - 1] =~ '^\%(()\\|{}\\|\[]\\|<>\\|""\\|''''\\|``\)$' ? '<bs><del>' : '<bs>'
inoremap <expr> <bs>  col('.') > 1 && getline('.')[charcol('.') - 2 : charcol('.') - 1] =~ '^\%(()\\|{}\\|\[]\\|<>\\|""\\|''''\\|``\)$' ? '<bs><del>' : '<bs>'

# Remove auto-inserted closing pair
inoremap <expr> <c-j> col('.') > 1 && getline('.')[charcol('.') - 2 : charcol('.') - 1] =~ '^\%(()\\|{}\\|\[]\\|<>\\|""\\|''''\\|``\)$' ? '<del>' : '<c-j>'

# Skip closing parenthesis
inoremap <expr> ) getline('.')[charcol('.') - 1] == ')' ? '<c-g>U<right>' : ')'
inoremap <expr> ] getline('.')[charcol('.') - 1] == ']' ? '<c-g>U<right>' : ']'
inoremap <expr> } getline('.')[charcol('.') - 1] == '}' ? '<c-g>U<right>' : '}'
inoremap <expr> > getline('.')[charcol('.') - 1] == '>' ? '<c-g>U<right>' : '>'
inoremap <expr> ` getline('.')[charcol('.') - 1] == '`' ? '<c-g>U<right>' : '``<c-g>U<left>'
inoremap <expr> " getline('.')[charcol('.') - 1] == '"' ? '<c-g>U<right>' : '""<c-g>U<left>'

# Single-quote auto-pair, but not when it's an apostrophe
inoremap <expr> '
        \ getline('.')[charcol('.') - 2] =~ '\w'
        \ ? getline('.')[charcol('.') - 1] == "'" ? '<c-g>U<right>' : "'"
        \ : getline('.')[charcol('.') - 1] == "'" ? '<c-g>U<right>' : "''<c-g>U<left>"