set tabstop=3
set shiftwidth=3
set expandtab
set mouse=a
set number
set lazyredraw
set wildmenu
set showmatch
set hlsearch
set incsearch
set foldenable
set foldlevelstart=10
set foldnestmax=10
set foldmethod=indent
set autoindent

" leader to comma
let mapleader=","

" move between tabs
nmap L :tabn<CR>
nmap H :tabp<CR>

" move vertically in wrapped lines
nnoremap j gj
nnoremap k gk

" (clear highlight in search)
nnoremap <leader><space> :nohlsearch<CR>
" fold/unfold
nnoremap <space> za

" move to beginning/end of line. Remap old ones
nnoremap B ^
nnoremap E $
nnoremap $ <nop>
nnoremap ^ <nop>

" edit vimrc and load vimrc bindings
nnoremap <leader>ev :tabnew $MYVIMRC<CR>
nnoremap <leader>sv :source $MYVIMRC<CR>

" save session. Open next time with vim -S
nnoremap <leader>s :mksession<CR>

" jk is escape. Caseful if actually need to type jk. Type j and then let timer timeout
inoremap jk <esc>

" arrow between line changes
set whichwrap+=<,>,h,l

" formatting code
if has ('python')
   map <C-K> :pyf /usr/share/vim/addons/syntax/clang-format-12.py<cr>
   imap <C-K> <c-o>:pyf /usr/share/vim/addons/syntax/clang-format-12.py<cr>
elseif has ('python3')
   map <C-K> :py3f /usr/share/vim/addons/syntax/clang-format-12.py<cr>
   imap <C-K> <c-o>:py3f /usr/share/vim/addons/syntax/clang-format-12.py<cr>
endif

function! Formatonsave()
    let l:formatdiff = 1
    if has ('python')
      pyf /usr/share/vim/addons/syntax/clang-format-12.py
    elseif has ('python3')
      py3f /usr/share/vim/addons/syntax/clang-format-12.py
    endif
endfunction
autocmd BufWritePre *.h,*.c,*.cpp call Formatonsave()