" lightline config
let g:lightline = {
\ 'separator': { 'left': "\ue0b0", 'right': "\ue0b2" },
\ 'subseparator': { 'left': "\ue0b1", 'right': "\ue0b3" }
\ }

" set nowrap, line numbers, hightlight search
set nowrap
set nu
set hlsearch

" set fold settings
set foldmethod=indent
set foldnestmax=10
set foldlevel=2
set nofoldenable

" synchronize with system clipboard
set clipboard=unnamed

" remap shift-enter to fire up the sidebar
" the same remap as above - may be necessary in some distros
nnoremap <silent> <C-M> :leftabove 25vs<CR>:e .<CR>

" View *.hex files in hex
au BufReadPost *.hex silent %!xxd

" Always show the signcolumn, otherwise it would shift the text each time
" diagnostics appear/become resolved.
set signcolumn=yes

" Use <c-space> to trigger completion.
inoremap <silent><expr> <c-space> coc#refresh()

" Use tab for trigger completion with characters ahead and navigate.
" NOTE: There's always complete item selected by default, you may want to enable
" no select by `"suggest.noselect": true` in your configuration file.
" NOTE: Use command ':verbose imap <tab>' to make sure tab is not mapped by
" other plugin before putting this into your config.
inoremap <silent><expr> <TAB>
    \ coc#pum#visible() ? coc#pum#next(1) :
    \ CheckBackspace() ? "\<Tab>" :
    \ coc#refresh()
inoremap <expr><S-TAB> coc#pum#visible() ? coc#pum#prev(1) : "\<C-h>"

" Make <CR> to accept selected completion item or notify coc.nvim to format
" <C-g>u breaks current undo, please make your own choice.
inoremap <silent><expr> <CR> coc#pum#visible() ? coc#pum#confirm()
			    \: "\<C-g>u\<CR>\<c-r>=coc#on_enter()\<CR>"

function! CheckBackspace() abort
  let col = col('.') - 1
  return !col || getline('.')[col - 1]  =~# '\s'
endfunction