set incsearch
set smartcase
set ignorecase
set hlsearch
set nowrapscan
set nowrap
set scrolloff=5
set sidescroll=1
set sidescrolloff=10
set foldminlines=2
set foldlevelstart=1
set foldnestmax=2

set surround

map - $
map _ ct_
map zm zM
map zi zR
map H zc
map L :action ExpandRegionRecursively<CR>
inoremap <C-d> <C-t>
inoremap <C-a> <C-d>