init.vim

" ----------------------------------------------------------------------------
" GENERAL SETTINGS
" ----------------------------------------------------------------------------
scriptencoding utf-16      " allow emojis in vimrc
set encoding=utf-8         " necessery encoding for powerline
set nocompatible           " vim, not vi
syntax on                  " syntax highlighting
filetype plugin indent on  " try to recognize filetypes and load rel' plugins

let mapleader = ','        " set the mapleaders before mappings!


" ----------------------------------------------------------------------------
" PLUGINS
" ----------------------------------------------------------------------------
call plug#begin()
if has('nvim')
  Plug 'Shougo/deoplete.nvim', { 'do': ':UpdateRemotePlugins' }
endif
Plug 'airblade/vim-gitgutter'
Plug 'w0rp/ale'
Plug 'scrooloose/nerdtree', { 'on':  'NERDTreeToggle' }
Plug 'junegunn/fzf', { 'dir': '~/.fzf', 'do': './install --all' }
Plug 'junegunn/fzf.vim'
Plug 'vim-airline/vim-airline'
Plug 'tpope/vim-fugitive'
Plug 'tpope/vim-commentary'
Plug 'tpope/vim-surround'
Plug 'mbbill/undotree', {'on': 'UndotreeToggle'}
Plug 'easymotion/vim-easymotion'
Plug 'townk/vim-autoclose'
Plug 'sheerun/vim-polyglot'
Plug 'tpope/vim-repeat'
Plug 'mileszs/ack.vim'
"Plug 'lifepillar/vim-solarized8'
"Plug 'phanviet/vim-monokai-pro'
"Plug 'rakr/vim-one'
Plug 'morhetz/gruvbox'
Plug 'tpope/vim-unimpaired'
Plug 'qpkorr/vim-bufkill'
Plug 'luochen1990/rainbow'
Plug 'tiagofumo/vim-nerdtree-syntax-highlight'
Plug 'ryanoasis/vim-devicons'
Plug 'machakann/vim-highlightedyank'
call plug#end()


" ----------------------------------------------------------------------------
" PLUGIN SETTINGS
" ----------------------------------------------------------------------------

" Colorschemed
set termguicolors
set background=dark
colorscheme gruvbox
let g:gruvbox_contrast_dark = 'hard'
let g:gruvbox_improved_warnings = '1'

" Undotree
let g:undotree_SetFocusWhenToggle = '1'
nmap <leader>u :UndotreeToggle<CR>


" ALE
" Error and warning signs.
let g:ale_sign_error = '⤫'
let g:ale_sign_warning = '⚠'
" Enable integration with airline.
let g:airline#extensions#ale#enabled = 1


" Ack.vim
" Tell ack.vim to use ag (the Silver Searcher) instead
let g:ackprg = 'ag --vimgrep'

" FZF
nmap ; :Buffers<CR>
nmap <Leader>f :Files<CR>
nmap <Leader>t :Tags<CR>

" Deoplete
"let g:deoplete#enable_at_startup = 1

" Airline
let g:airline_powerline_fonts = 1
let g:airline#extensions#tabline#enabled = 1

" NERDTree
" Close vim if nerdtree is the only window open
autocmd bufenter * if (winnr("$") == 1 && exists("b:NERDTree") && b:NERDTree.isTabTree()) | q | endif

" Ignore .git directories
let NERDTreeIgnore=['^\.git','^__']

" Toggle NerdTree
nmap <leader>b :NERDTreeToggle<CR>

" Rainbow Parenthesis
let g:rainbow_conf = {
	\	'guifgs': ['royalblue3', 'darkorange3', 'seagreen3', 'firebrick'],
	\	'ctermfgs': ['lightblue', 'lightyellow', 'lightcyan', 'lightmagenta'],
	\	'operators': '_,_',
	\	'parentheses': ['start=/(/ end=/)/ fold', 'start=/\[/ end=/\]/ fold', 'start=/{/ end=/}/ fold'],
	\	'separately': {
	\		'*': {},
	\		'tex': {
	\			'parentheses': ['start=/(/ end=/)/', 'start=/\[/ end=/\]/'],
	\		},
	\		'lisp': {
	\			'guifgs': ['royalblue3', 'darkorange3', 'seagreen3', 'firebrick', 'darkorchid3'],
	\		},
	\		'vim': {
	\			'parentheses': ['start=/(/ end=/)/', 'start=/\[/ end=/\]/', 'start=/{/ end=/}/ fold', 'start=/(/ end=/)/ containedin=vimFuncBody', 'start=/\[/ end=/\]/ containedin=vimFuncBody', 'start=/{/ end=/}/ fold containedin=vimFuncBody'],
	\		},
	\		'html': {
	\			'parentheses': ['start=/\v\<((area|base|br|col|embed|hr|img|input|keygen|link|menuitem|meta|param|source|track|wbr)[ >])@!\z([-_:a-zA-Z0-9]+)(\s+[-_:a-zA-Z0-9]+(\=("[^"]*"|'."'".'[^'."'".']*'."'".'|[^ '."'".'"><=`]*))?)*\>/ end=#</\z1># fold'],
	\		},
	\		'css': 0,
	\	}
	\}


" ----------------------------------------------------------------------------
" KEY MAPS
" ----------------------------------------------------------------------------

" Move *visually* up and down
nmap j gj
nmap k gk

" Make movement down(j)-up(k)-left(l)-right(;)
"noremap l h
"noremap ; l
"noremap h ;

" Marks should go to the column, not just the line. Why isn't this the default? See :h mark-motions
nnoremap ' `

" You don't know what you're missing if you don't use this.
nmap <C-e> :e#<CR>

" Move between open buffers.
nmap <C-n> :bnext<CR>
nmap <C-p> :bprev<CR>

" Use the space key to toggle folds
nnoremap <space> za
vnoremap <space> zf

" Super fast window movement shortcuts
nmap <C-j> <C-W>j
nmap <C-k> <C-W>k
nmap <C-h> <C-W>h
nmap <C-l> <C-W>l

" Searches always operate in "Very Magic" mode
nnoremap / /\v
vnoremap / /\v

" In normal and visua mode use tab to jump to matching braces
nnoremap <tab> %
vnoremap <tab> %

" Use ESC to exit terminal mode
tnoremap <Esc> <C-\><C-n>

" Clear out search highlighting
nnoremap <leader><space> :noh<cr>

" Strip trailing whitespace - e prevents an error if none are found
" note this moves the cursor to the last match and resets the last search term.
" nnoremap <leader>w :%s/\s\+$//e<CR>
" a better way is to save the window view to a variable, run it, and restore it.
fun! TrimWhitespace()
    let l:save = winsaveview()
    %s/\s\+$//e
    call winrestview(l:save)
endfun
command! TrimWhitespace call TrimWhitespace()
nnoremap <Leader>w :call TrimWhitespace()<CR>

" easier quitting/closing
nmap <leader>q <ESC>:q<CR>

" focusing/closing all splits
nmap <leader>o :only<CR>


" ----------------------------------------------------------------------------
" OPTIONS
" ----------------------------------------------------------------------------
set autoindent              " Carry over indenting from previous line
set autoread                " Don't bother me hen a file changes
set autowrite               " Write on :next/:prev/^Z
set backspace=indent,eol,start
                            " Allow backspace beyond insertion point
set cindent                 " Automatic program indenting
set cinkeys-=0#             " Comments don't fiddle with indenting

set copyindent              " Make autoindent use the same chars as prev line
set directory-=.            " Don't store temp files in cwd
set expandtab               " No tabs
set formatoptions=tcqn1     " t - autowrap normal text
                            " c - autowrap comments
                            " q - gq formats comments
                            " n - autowrap lists
                            " 1 - break _before_ single-letter words
set hidden                  " Don't prompt to save hidden windows until exit
set history=200             " How many lines of history to save

set hlsearch                " Hilight searching
set ignorecase              " Case insensitive
set inccommand=split        " Live preview of substitutions
set incsearch               " Search as you type
set infercase               " Completion recognizes capitalization
set laststatus=2            " Always show the status bar
set matchtime=2             " Tenths of second to hilight matching paren
set number                  " Line numbers to start
set scrolloff=3             " Numbers of context lines while scrolling
set showcmd                 " Show (partial) command in the last line of the screen (turn off if terminal is slow)
set showmatch               " Hilight matching braces/parens/etc.
"set showmode               " Always tell us what mode were in
set noshowmode              " Airline shows us the mode
set smartcase               " Lets you search for ALL CAPS
set softtabstop=2           " Spaces 'feel' like tabs
set suffixes+=.pyc          " Ignore these files when tab-completing
set tabstop=2               " The One True Tab
set textwidth=100           " 100 is the new 80
set ttyfast                 " Indicates fast terminal - more drawing
set undofile                " We want persistent undofiles
set vb t_vb=                " No visual bells
set wildmenu                " Enable command-line completion operates in an enhanced mode
"set wildmode=longest:full,full  " Setup completion
set mouse=a                 " enable mouse (selection, resizing windows)

" Make vim recogize 256 colors
if $TERM == "xterm-256color" || $TERM == "screen-256color" || $COLORTERM == "gnome-terminal"
  set t_Co=256
endif


" ----------------------------------------------------------------------------
" NOTES
" ----------------------------------------------------------------------------
" Config Files
" * https://github.com/statico/dotfiles/blob/master/.vim/vimrc
"
" Resources:
" * https://statico.github.io/vim.html
" * https://statico.github.io/vim2.html
" * https://statico.github.io/vim3.html
" * https://github.com/mhinz/vim-galore