"--------------
" a minimal vimrc
"--------------

"load system defaults
"--------------------
if filereadable(expand('$VIMRUNTIME/defaults.vim'))
  unlet! g:skip_defaults_vim
  source $VIMRUNTIME/defaults.vim
endif

"regular settings
"----------------
" ui
set number    " line numbers
set ruler     " line # in the statusline
set wildmenu  " vim command completion menu
set showcmd   " show the current normal mode command
set showmatch " show matching symbols like (), {}
set hidden    " allow unsaved buffers in background

" encoding/format
set encoding=utf-8            " utf-8 (basically) standard
set fileformats=unix,dos,mac  " controls newline styles

" searching
set hlsearch    " highlight all matches for a search
set incsearch   " incremental search by character
set ignorecase  " ignore alphabetical case of search
set smartcase   " ignore unless there is a capital letter

" tab/space indent and whitespace
set tabstop=2     " tabstop is the num to use for a tab character
set softtabstop=2 " softtabstop makes up the difference between tab and space
set shiftwidth=2  " shiftwidth applies to indenting with < and >
set expandtab     " use space characters to indent instead of tab characters
set autoindent    " copies indent from current line
set smarttab      " should not matter if ts, sts and sw are all the same
set backspace=indent,eol,start  " lets you backspace over anything

" key timeout values
set esckeys         " allow <ESC> to be registered instantly
set timeoutlen=1000 " keymap timeout value (1 second in ms)
set ttimeoutlen=20  " time out for keycodes (20ms)

" allow syntax and filetype plugins
syntax enable
filetype plugin indent on
runtime macros/matchit.vim

" keybinds
"----------
let mapleader = " "
nnoremap <leader>l :set list!<CR>
nnoremap <leader>t2 :set ts=2 sts=2 sw=2 expandtab<CR>
nnoremap <leader>t4 :set ts=4 sts=4 sw=4 expandtab<CR>
nnoremap <leader>t4t :set ts=4 sts=4 sw=4 noexpandtab<CR>

" autocmds
"---------
augroup general
    autocmd!
    "keep equal proportions when windows resized
    autocmd VimResized * wincmd =
    "save cursor position in a file
    autocmd BufReadPost * if line("'\"") > 1 && line("'\"")
                \ <= line("$") | exe "normal! g'\"" | endif
augroup END

augroup languages
    autocmd!
    autocmd BufNewFile,BufRead *.bash set syntax=sh
    autocmd FileType python xnoremap <leader>r <esc>:'<,'>:w !python3<CR>
    autocmd FileType go setlocal noexpandtab ts=4 sts=4 sw=4
    autocmd FileType html :syntax sync fromstart
    autocmd FileType html,javascript,css,json,yaml,sh
                \ setlocal ts=2 sts=2 sw=2 expandtab
augroup END