.vimrc

" Ben Kogan <http://benkogan.com>

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" GENERAL SETUP

set nocompatible                " disable vi compatability mode
set ruler                       " show cursor position at window bottom
set showcmd                     " display incomplete commands
set incsearch                   " do incremental searching
set ignorecase                  " turn off case-sensitive search
set smartcase                   " turn on case-sensitive search if uppercase
set ttyfast                     " optimize for fast terminal connections
set wildmenu                    " enhance command-line completion
set noshowmode                  " hide insert status
set hlsearch                    " highlight last used search pattern
set number                      " show line numbers
set hidden                      " buffers can be hidden without saving first
set confirm                     " confirm abandoning buf with unsaved changes
set nofoldenable                " disable folding (re-enable with `zc`)
set autoread                    " reload file if changed outside of vim
set showmatch                   " show matching brackets under cursor
set mouse=a                     " enable mouse in all modes
set t_Co=256                    " use 256 colors
set scrolloff=1                 " scroll to one line before bottom border
set laststatus=2                " always show status line
set history=100                 " keep 100 lines of command line history
set encoding=utf-8              " use utf-8 as standard encoding
set shell=/bin/bash             " shell as bash so fish doesn't break vim
set backspace=indent,eol,start  " allow bkspace over everything in insert mode
set viminfo+=n~/.vim/.viminfo   " store .viminfo in ~/.vim
set display+=lastline           " display last line, even if cut off by bottom
set noeb vb t_vb=               " no beep, no flash for bell

set list
set listchars=tab:>-,trail:~
set cursorline

filetype plugin indent on       " detect filetype and lang-dependent indent
syntax on                       " enable syntax highlighting
colorscheme PaperColor          " color scheme

" Return to last edit position when opening files
autocmd BufReadPost *
     \ if line("'\"") > 0 && line("'\"") <= line("$") |
     \   exe "normal! g`\"" |
     \ endif

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" PLUGINS

call plug#begin()
Plug 'justinmk/vim-sneak'
Plug 'ctrlpvim/ctrlp.vim'
Plug 'sheerun/vim-polyglot'
Plug 'jiangmiao/auto-pairs'
Plug 'tpope/vim-endwise'
Plug 'tpope/vim-rsi'
Plug 'tpope/vim-repeat'
Plug 'tpope/vim-fireplace'
Plug 'tpope/vim-surround'
Plug 'tpope/vim-fugitive'
call plug#end()

let g:airline_theme = 'lucius'
let g:airline_left_sep = ''
let g:airline_right_sep = ''
let g:airline#extensions#tabline#enabled = 1
let g:airline#extensions#tabline#formatter = 'unique_tail_improved'
let g:airline#extensions#tabline#buffer_min_count = 2
let g:sneak#s_next = 1
let g:gitgutter_signs = 0
let g:ctrlp_working_path_mode = 'ra'
let g:markdown_fenced_languages = ['html', 'vim', 'ruby', 'python', 'bash=sh', 'javascript']
let g:clojure_align_multiline_strings = 1
let g:syntastic_javascript_checkers = ['eslint']

" ctrlp: ignore files in .gitignore
let g:ctrlp_user_command = ['.git', 'cd %s && git ls-files -co --exclude-standard']

" Set gitgutter and syntastic gutter background to clear
highlight clear SignColumn

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" MAPPINGS

" Use tab to enter normal mode
"imap <tab> <esc>

" Use ; instead of : to enter commandline mode
nore ; :
nore , ;

" Move through wrapped lines like normal lines
nnoremap j gj
nnoremap k gk

" http://stackoverflow.com/questions/4256697
nnoremap * *``

" Use <C-L> to clear the highlighting of :set hlsearch.
if maparg('<C-L>', 'n') ==# ''
    nnoremap <silent> <C-L> :nohlsearch<CR><C-L>
endif

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" LEADER COMMANDS

" Use `,` as leader key
let mapleader = ','

" Create setext headings with `h1` and `h2`
map <leader>h1 VypVr=
map <leader>h2 VypVr-

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" FUNCTIONS

" Run `:FixWhitespace` to remove end of line white space
function! s:FixWhitespace(line1,line2)
    let l:save_cursor = getpos(".")
    silent! execute ':' . a:line1 . ',' . a:line2 . 's/\s\+$//'
    call setpos('.', l:save_cursor)
endfunction
command! -range=% FixWhitespace call <SID>FixWhitespace(<line1>,<line2>)

" Run `:RemoveFancyCharacters` to remove smart quotes, etc.
function! RemoveFancyCharacters()
  let typo = {}
  let typo["“"] = '"'
  let typo["”"] = '"'
  let typo["‘"] = "'"
  let typo["’"] = "'"
  let typo["–"] = '--'
  let typo["—"] = '---'
  let typo["…"] = '...'
  :exe ":%s/".join(keys(typo), '\|').'/\=typo[submatch(0)]/ge'
endfunction
command! RemoveFancyCharacters :call RemoveFancyCharacters()

" Run `:RenameFile` to rename current buffer file
function! RenameFile()
  let old_name = expand('%')
  let new_name = input('New file name: ', expand('%'), 'file')
  if new_name != '' && new_name != old_name
    exec ':saveas ' . new_name
    exec ':silent !rm ' . old_name
    redraw!
  endif
endfunction
command! RenameFile :call RenameFile()

function! BBurl()
  let current_file = expand("%")
  " after browse: ?at=refs%2Fheads%2FDERP-1252-quantiles
  " todo: line numbers, failure modes, not the worst bash command ever
  execute '! printf' shellescape('https://stash.corp.appnexus.com/projects/%s/browse/%s', 1) '$(git config --get remote.origin.url | perl -n -e' shellescape('/^.+\/([a-zA-Z_-]+)\/([a-zA-Z_-]+)\.git$/ && print $1 . "/repos/" . $2', 1) ')' current_file
endfunction
command! BBurl :call BBurl()

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" ABBREVIATIONS

" Type `dts` to expand to date
iab <expr> dts strftime("%Y-%m-%d")

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" TEXT, TABS, INDENTATION, SPELL CHECK

set tabstop=4
set shiftwidth=4

set autoindent
set spellfile=~/.vim/spell/en.utf-8.add

autocmd FileType markdown,text setlocal cc=0 spell nocul lbr

" List continuation and indentation for markdown
autocmd FileType markdown setlocal
      \ com=s1:/*,mb:*,ex:*/,://,b:#,:%,:XCOMM,n:>,b:- formatoptions=tcroqln
      \ breakindent
      \ showbreak=\ \

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" BACKUP

" note: `~/.vim` and `~/.vim/backup` must already exist
" note: `^=` prepends to target
" note: `//` incorporates full path into swap file name

set backup
set backupdir^=~/.vim/backup
set dir^=~/.vim/backup//