path: root/vimrc

" vim: textwidth=160 tabstop=2 shiftwidth=2
"
if has('nvim')
    runtime! python_setup.vim
endif

call plug#begin()


" Brilliant_Plugins_by_tpope: ========================.
" Plug 'tpope/vim-sensible'                             | " a sane and modern default configuration # not required with nvim
Plug 'tpope/vim-surround'                             | " plugin makes cs"' inside a line replace " with '
Plug 'tpope/vim-fugitive'                             | " the most complete GIT integration plugin
Plug 'godlygeek/tabular'                              | " align code on a sign, like :Tab/=
Plug 'mhinz/vim-signify'                              | " show changes in the clutter bar
Plug 'jlanzarotta/bufexplorer'
" Plug 'wting/gitsessions.vim'
Plug 'rkitover/vimpager'
Plug 'mtth/scratch.vim'
Plug 'airblade/vim-rooter'                            | " makes :lcd changes to projects (git-)root (code-completion, gf, grep, find)

nnoremap <F12> :ToggleBufExplorer<CR>
nnoremap <F2> :ScratchPreview<CR>
nnoremap <F6> :syntax sync fromstart<CR>:nohlsearch<CR>


" AIRLINE: ===========================================.
Plug 'vim-airline/vim-airline'                        | " beautification of the mode line
set laststatus=2                                      | " required by AirLine, without status line does not appear until a window split
let g:airline_detect_modified                    = 0  |
let g:airline_detect_paste                       = 0  |
let g:airline_exclude_preview                    = 1  |
let g:airline_extensions                         = ['tabline', 'branch', 'syntastic', 'tagbar']
let g:airline#extensions#tabline#disable_refresh = 1  |
let g:airline#extensions#tabline#enabled         = 1  |
let g:airline#extensions#tabline#fnamemod        = ':t:.' | " let airline just show the filename without its path
let g:airline#extensions#tabline#show_buffers    = 1  |
let g:airline#extensions#tabline#show_tabs       = 0  |
let g:airline#extensions#tagbar#enabled          = 0  |
let g:airline#extensions#tagbar#flags            = 's'
let g:airline#extensions#whitespace#enabled      = 0  |
let g:airline#extensions#wordcount#enabled       = 0  |
let g:airline_inactive_collapse                  = 1  |
let g:airline_powerline_fonts                    = 1  |
let g:airline_section_c                          = '%F'


" AIRLINE_Theme: =====================================.
Plug 'vim-airline/vim-airline-themes'                 | " airline themes to match any light and dark terminal using :AirlineTheme
let g:airline_theme='base16'                          | " specifies which colorscheme should airline uses
" let g:airline_theme='badcat'                          | " specifies which colorscheme should airline uses
" let g:airline_theme='papercolor'                    | " specifies which colorscheme should airline uses


" Colorschemes: ======================================.
Plug 'ryanoasis/vim-devicons'                         | " eye candy icons
Plug 'chriskempson/base16-vim'                        | "
map <leader>q :bp<bar>sp<bar>bn<bar>bd<CR>.


" NETRW: =============================================.
let g:netrw_list_hide     = '^\..*'                   | " Explore mode: hide files starting with dot
let g:netrw_hide          = 1                         | " show not-hidden files only
let g:netrw_liststyle     = 3                         | " 3=tree
let g:netrw_banner        = 0                         | " display help messages?
let g:netrw_winsize       = 20                        | " window size in percent
let g:netrw_fastbrowse    = 2                         | " manually refresh direcory list (avoids display errors)
let g:netrw_keepdir       = 0
let g:netrw_browse_split  = 4                         | " 4=open in previous window
let g:netrw_preview       = 0                         | "
let g:netrw_alto          = 0                         | " open files on the right
let g:netrw_altv          = 1                         | " open files on the right

" NERDTree: ==========================================.
Plug 'scrooloose/nerdtree'                            | " replace NetRW, which is kind of buggy
let NERDTreeCascadeSingleChildDir = 0  | " I don't get how one can use <m> to create files in that included directory
let NERDTreeShowBookmarks         = 1  | " show bookmarks by default (when opening for the first time)
let NERDTreeIgnore                = ['\.aux$']
set winwidth=30                                         " keep NERDTreeWindow at least this size
set winminwidth=30                                      " (and all other windows, so TODO: watch out)

" depending on if NERDTree has the focus:
nnoremap <expr>
      \ <leader><leader>
      \ bufwinnr("%")==g:NERDTree.GetWinNum() ? ':NERDTreeClose<CR>' : ':NERDTreeFind<CR>'
nnoremap <expr>
      \ <Tab>
      \ bufwinnr("%")==g:NERDTree.GetWinNum() ? '<C-W><C-W>' : ':bn<CR>'
nnoremap <expr>
      \ <S-Tab>
      \ bufwinnr("%")==g:NERDTree.GetWinNum() ? '<C-W><C-W>' : ':bp<CR>'
" close NERDTree if it is the last remaining window (taken from the official documentation)
" autocmd bufenter *
"       \ if (winnr("$") == 1 && exists("b:NERDTree") && b:NERDTree.isTabTree()) | q | endif
"
" exec current line as a command, insert output of command (from: https://youtu.be/MquaityA1SM?t=35m45s)
nnoremap Q !!$SHELL<CR>


" Additional: ========================================.
Plug 'sheerun/vim-polyglot'                           " better syntax highlighting/indentation for multiple languages
let g:javascript_conceal_function             = "ƒ"
let g:javascript_conceal_null                 = "ø"
let g:javascript_conceal_this                 = "@"
let g:javascript_conceal_return               = "⇚"
let g:javascript_conceal_undefined            = "¿"
let g:javascript_conceal_NaN                  = "ℕ"
let g:javascript_conceal_prototype            = "¶"
let g:javascript_conceal_static               = "•"
let g:javascript_conceal_super                = "Ω"
let g:javascript_conceal_arrow_function       = "⇒"

Plug 'majutsushi/tagbar'                              " superseeds taglist-plus, which isn't maintained any more
let g:tagbar_autoclose   = 1
let g:tagbar_autofocus   = 1
let g:tagbar_autoshowtag = 1
let g:tagbar_compact     = 0
let g:tagbar_indent      = 0
let g:tagbar_foldlevel   = 99
nnoremap <leader>l :TagbarToggle<CR>|                 " bind TagBar to Hotkey Ctrl+L
nnoremap <F9> :TagbarToggle<CR>|                      " bind TagBar to Hotkey Ctrl+L


" Autocompleter: =====================================.
Plug 'Valloric/MatchTagAlways'                        " highlights the closing tag/brace/...
Plug 'Valloric/YouCompleteMe'
let g:ycm_add_preview_to_completeopt          = 1     " reuse existing preview window
let g:ycm_autoclose_preview_window_after_insertion = 1
let g:ycm_collect_identifiers_from_tags_files = 1     " Let YCM read tags from Ctags file
let g:ycm_seed_identifiers_with_syntax        = 1     " Completion for programming language's keyword
let g:ycm_complete_in_comments                = 1     " Completion in comments
let g:ycm_complete_in_strings                 = 1     " Completion in string
let g:ycm_error_symbol                        = '✖'   " insert this as an error symbol in the gutter bar
let g:ycm_min_num_of_chars_for_completion     = 1
let g:ycm_use_ultisnips_completer             = 1     " Default 1, just ensure
let g:ycm_warning_symbol                      = '➔'   " insert this as a warning symbol in the gutter bar
let g:ycm_confirm_extra_conf                  = 0     " security is overrated
let g:ycm_key_list_select_completion          = ['<Down>']
let g:ycm_key_list_previous_completion        = ['<Up>']
let g:ycm_global_ycm_extra_conf               = '~/src/ycm_extra_conf.py'
let g:ycm_semantic_triggers                   = { 'c': [ 're!.' ] }
" 'cmake -D CMAKE_EXPORT_COMPILE_COMMANDS=1 ..' can be used to generate a .ycm-extra.conf compatible json file
" disable <tab>-key for YCM so that it can be used with ultisnips
" let g:ycm_key_list_select_completion=[]
" let g:ycm_key_list_previous_completion=[]
" Plug 'rdnetto/YCM-Generator'

" Plug 'ervandew/supertab'


Plug 'scrooloose/syntastic'
set statusline+=%#warningmsg#
set statusline+=%{SyntasticStatuslineFlag()}
set statusline+=%*
" set signcolumn=yes                                    " always show the column
let g:LatexBox_latexmk_preview_continuously = 1
let g:LatexBox_viewer                       = "evince"
let g:syntastic_always_populate_loc_list    = 1
let g:syntastic_auto_loc_list               = 0
let g:syntastic_check_on_open               = 1
let g:syntastic_check_on_wq                 = 0
let g:syntastic_quiet_messages              = {"type":"style"} " filter ( = do not display) style/formatting errors and warnings
" Syntastic
let g:syntastic_error_symbol                = '✖'
let g:syntastic_style_error_symbol          = '✗'
let g:syntastic_warning_symbol              = '➔'
let g:syntastic_style_warning_symbol        = '≈'

Plug 'davidhalter/jedi-vim'                           " jedi gets used to display python function signatures
let g:jedi#completions_enabled        = 0     " we do not need completions, because we have YouCompleteMe
let g:jedi#show_call_signatures       = 1     " which sadly does not support signatures like jedi
let g:jedi#show_call_signatures_delay = 0
let g:jedi#auto_vim_configure         = 0
let g:pymode_rope                     = 0     " https://github.com/davidhalter/jedi-vim/issues/163
" autocmd FileType python jedi.preload_module('os', 'sys', 'math')
" let g:pymode_options_max_line_length          = 120
" let g:syntastic_python_flake8_args='--ignore=F821,E302,E501,E241,E301'

Plug 'honza/vim-snippets'                             " dependency of ultisnips (see below)
Plug 'SirVer/ultisnips'                               " replaces loremipsum (and many more)
"let g:UltiSnipsExpandTrigger       = '<C-j>'| " Trigger configuration. Do not use <tab> if you use https://github.com/Valloric/YouCompleteMe.
"let g:UltiSnipsJumpForwardTrigger  = '<C-j>'| " \
"let g:UltiSnipsJumpBackwardTrigger = '<C-k>'| " \
"let g:UltiSnipsListSnippets      = '<C-`>'| " YouCompleteMe includes those, so this isn't necessary
"   let g:UltiSnipsExpandTrigger       = '<leader><tab>'| " Trigger configuration. Do not use <tab> if you use https://github.com/Valloric/YouCompleteMe.
"   let g:UltiSnipsJumpForwardTrigger  = '<PageDown>'| " \
"   let g:UltiSnipsJumpBackwardTrigger = '<PageUp>'| " \
"   let g:UltiSnipsListSnippets        = '<leader><leader>'| " YouCompleteMe includes those, so this isn't necessary

" UltiSnips triggering
" let g:UltiSnipsExpandTrigger = "<nop>"
" let g:ulti_expand_or_jump_res = 0
" function ExpandSnippetOrCarriageReturn()
"     let snippet = UltiSnips#ExpandSnippetOrJump()
"     if g:ulti_expand_or_jump_res > 0
"         return snippet
"     else
"         return "\<CR>"
"     endif
" endfunction
" inoremap <expr> <CR> pumvisible() ? "\<C-R>=ExpandSnippetOrCarriageReturn()\<CR>" : "\<CR>"
" set completeopt-=preview

" let g:UltiSnipsEditSplit         = 'vertical'


" Disabled ===========================================.
" Plug 'Shougo/neocomplete.vim'                       | " alternative to YouCompleteMe in some cases
" Plug 'tpope/vim-characterize'                       | " normal mode: make ga show character names of Unicode chars (ga shows hex and dec values)
" Plug 'tpope/vim-repeat'                             | " lets . (dot) repeat plugin macros as well, specifically vim-surround


call plug#end()                                       | " all plugins are getting loaded on this line, don't remove!

filetype on
filetype plugin on
filetype indent on
syntax on                     | " enable syntax highlighting
syntax sync minlines=60       | " how many preceding lines will be parsed? (has performance impact)
" set term=xtermc             | " required on solaris



" Shortcut mods =======================================.
inoremap <C-Space> <C-x><C-o>
"inoremap <C-@> <C-Space>
vnoremap < <gv|                   " allows deindenting a selected block and keeps selection
vnoremap > >gv|                   " allows indenting a selected block and keeps selection


" Bind CTRL+Backspace to vims version (CTRL+W) in " <CR> insert mode (only works with gvim)
inoremap
      \ <C-Backspace>
      \ <C-W>

noremap <silent> <F5> :make<CR>

" default copy&paste insert key binding (just in insert mode, so it doesn't conflict
" with visual block mode).
inoremap <C-V> <C-R>+
inoremap <C-S> <C-O>:w<CR>




" spell checkers?
set spell spelllang=en,de     | " enable spell checker
set dictionary=/usr/share/dict/cracklib-small
set complete+=k " make default completer <C-N> respect the dictionary

let g:spellfile_URL = 'http://ftp.vim.org/vim/runtime/spell'

" settings ============================================.
"
" autocmd BufEnter * lcd %:p:h
" set autochdir                 | " When on, Vim will change the current working directory
set shell=/bin/bash           | " many scripts rely on bash, but its path varies why it is commented out here
" set selectmode=mouse,key,cmd  | " enters vim's select mode when pressing shift-left or shift-END
" set keymodel=startsel,stopsel | " makes shift-left, shift-right available for selecting text
set breakindent               | " Every wrapped line will continue visually indented
set clipboard=unnamedplus     | " makes copy and paste work (autoselectplus might work as well)
set cmdheight=2               | " sets the command line's height
set complete+=d               | " scan current and included files for defined name or macro
set complete+=i               | " scan current and included files for completions
set concealcursor=nc          | " limits the display of concealed text to normal and command mode
set conceallevel=2            | " replace escaped chars by their utf-8 representation (useful for LaTeX)
set confirm                   | " asks 'do you want to save?'
set encoding=utf-8            | " set up vim's cosole encoding (not file encoding, for which there is fileencoding=)
set hidden                    | " allows switiching buffers even if the current buffer contains changes (displays +)
set hlsearch                  | " highlights all search matches (not as performant!)
set ignorecase smartcase      | " search with ignorecase by default, but use case sensitive search when one captical char is contained
set lazyredraw                | " disables redraw during macro exectution (improves performance)
set linebreak                 | " wrap long lines at char 'breakat', not inside words
set mouse=n                   | " allow mouse in normal mode only, so one can use the terminals c&p feature in insert mode
set mousemodel=popup          | " only in gvim: right click opens a popup-menu
set nocursorcolumn            | " turn visual cursor column off (improves performance)
set nocursorline              | " turn visual cursor line off (improves performance)
set nrformats+=alpha          | " allows CTRL-A & CTRL-X to increment and decrement letters, not just numbers
set nofoldenable              | " disable code folding. I hate code folding
set foldcolumn=4              | " if code folding gets used display it in the clutter bar, where line numbers live
set relativenumber            | " relative line numbers can speed up navigation
set noshowmode                | " because we are using some powerline derivat
set nostartofline             | " when scrolling: do not move the cursor to column 1
set notimeout ttimeout        | " improves performance but is known to cause problems on slow terminals
set nowrap                    | " but do not (by default) wrap long lines around
set number                    | " turn line numbers on/off (performance decreases when they are shown)
set pumheight=8               | " Determines the maximum number of items to show in the popup menu for
set path+=**                  | " allow recursive searches for files
set redrawtime=400            | " The time in milliseconds for redrawing the display.
" set restorescreen             | " restores the console after exiting vim
" set shada+=n~/.vim/shada      | " shada file to use
set scrolljump=5              | " how many lines get scrolled into view when cursor reaches the screens edge
set splitbelow                | " open new windows below the current one (i find that more intuitive)
set shiftround                | " indent/unindent snaps to multiple of shiftwidth
set showcmd                   | " essential: show keys of combined commands in the lower right corner
set tags+=../tags
set t_Co=256                  | " required on some ssh sessions
" set textwidth=100             | " line length (80 used to be default, but...)
set textwidth=120             | " better done with modeline 
set colorcolumn=120           | " better done with modeline
set thesaurus+=/home/max/.vim/thesaurus/php.txt
set ts=4 sts=4 sw=4 expandtab | " better done with a modeline
set ttimeoutlen=10            | " set esc key timeout in ms-
set updatetime=1000           | " updates the screen more often
set writedelay=0
set lcs+=space:·              | " local space char

if has("multi_byte")
  scriptencoding utf-8        | " tell vim that we are using utf-8 here
  set encoding=utf-8          | " we need default utf-8 encoding to use cool chars as line break and so on (see below)
  set termencoding=&encoding  | " once we use special chars we assume everybody uses a terminal supporting those

  set listchars=              | " initialize empty listchars
  set listchars+=extends:»    | " symbols used when using :set list (which displays non-printable chars)
  set listchars+=precedes:«   | " symbols used when using :set list (which displays non-printable chars)

  set listchars+=tab:˲\       | " symbols used when using :set list (which displays non-printable chars)
  set listchars+=trail:·      | " symbols used when using :set list (which displays non-printable chars)
  " set listchars+=eol:↲         | " symbols used when using :set list (which displays non-printable chars)
  " set listchars+=space:·     | " symbols used when using :set list (which displays non-printable chars)
  set showbreak+=›            | " symbol used in the beginning of a wrapped line
  set list
end

if has("gui_running")
  set toolbar+=text
  set guioptions+=eig
  set guioptions-=T           | " toolbar
  set guioptions+=c           | " use console dialogs instead of popups
  set guioptions+=a           | " autoselect: copy&paste using middleclick
  set guioptions-=m           | " remove menu
  " set guifont=Droid\ Sans\ Mono\ for\ Powerline\ 12
  set guifont=Dejavu\ Sans\ Mono\ for\ Powerline\ 12
  set guioptions-=e           | " do not display tabs
  set guioptions-=L           | " do not show left scrollbar
  set guioptions-=r           | " do not show right scrollbar
  set winaltkeys=menu         | " behave like other windows: ALT-key can be used to open the menu (and cannot be :remaped)
endif


if has('cscope')
  " http://vim.wikia.com/wiki/Cscope
  set cscopetag cscopeverbose

  if has('quickfix')
    set cscopequickfix=s-,c-,d-,i-,t-,e-
  endif

  cnoreabbrev csa cs add
  cnoreabbrev csf cs find
  cnoreabbrev csk cs kill
  cnoreabbrev csr cs reset
  cnoreabbrev css cs show
  cnoreabbrev csh cs help

  command -nargs=0 Cscope cs add $VIMSRC/src/cscope.out $VIMSRC/src
endif


if bufname('%') == ''
  set bufhidden=wipe
endif

" noautocmd

if has("autocmd")
  set modeline                | " set variables specific to a file, like indentation by adding a comment
  " set default completion function in case YouCompleteMe cannot help
  set omnifunc=syntaxcomplete#Complete

  " automatically reload this file when it gets edited
  augroup reload_vimrc " {
    autocmd!
    autocmd BufWritePost $MYVIMRC source $MYVIMRC
  augroup END " }

  augroup extra_whitespace " {
    highlight ExtraWhitespace ctermbg=red guibg=red
    syn match ExtraWhitespace /\s\+$/
  augroup END "}

  augroup set_window_title " {
    " autocmd BufWinEnter quickfix setl statusline=%t
    " autocmd BufEnter * let &titlestring = hostname() . "[vim(" . expand("%:t") . ")]"
    autocmd CursorHold * let &titlestring = "%t|".$USER."@".hostname().":%{expand(\"%:~:.:h\")}%=%y"
    set title
    " autocmd CursorHold * let &titlestring = "Vim (".airline#extensions#tagbar#currenttag().")"

    " set window title for screen(3)
    if &term == "screen"
      set t_ts=k
      set t_fs=\
    endif
    if &term == "screen" || &term == "xterm"
      set titlelen=40
      set title
    endif
  augroup END

  augroup visual_mode_shows_unprintable " {
    " set cursorline              | " use setcursorline in order to highlight non printable chars in the current line
    autocmd ColorScheme * highlight normal ctermbg=NONE
    " set list                      | " shows unprinable characters in the current line
    " autocmd ColorScheme * highlight NonText ctermbg=NONE ctermfg=0 gui=bold guifg=NONE
    " autocmd ColorScheme * highlight SpecialKey ctermbg=NONE ctermfg=0 gui=bold guifg=NONE
    " autocmd ColorScheme * highlight CursorLineNr term=bold ctermbg=NONE ctermfg=0 gui=bold guifg=Yellow
    "
    "
    " highlight NonText guifg=#1d1f21 | " make non printable chars invisible. The active line is an exception.
    " highlight ColorColumn guibg=#005f87
    " highlight ColorColumn guibg=#F0F0E0
  augroup END " }


  " hitting K over a keyword shows a help in a buffer.
  " Here we define the commands used to look those keywords up
  " as per file type...
  augroup filetype_specific
    autocmd FileType python setlocal keywordprg=pydoc
    autocmd FileType vim    setlocal keywordprg=:help |.
    autocmd FileType c,cpp  setlocal equalprg=clang-format
    autocmd FileType c,cpp  setlocal breakat-=-

    " keyboard mapping for xml alike languages
    " Alt-Up : Move cursor up one tag
    " Alt-Down: Move cursor down one tag
    " leader-=: tidies currently selected tag and subtags and sorts attributes by name (alphabetically)
    autocmd Filetype html,htmldjango,xml
      \ :nnoremap
              \ <M-Down>
              \ :call search('^ *<', 'e')<CR>:nohlsearch<CR>|
      \ :nnoremap
              \ <M-Up>
              \ :call search('^ *<', 'eb')<CR>:nohlsearch<CR>|
      \ :nnoremap
              \ <leader>=
              \ vat:'<,'>!tidy -xml --wrap 0 --sort-attributes alpha 2>/dev/null<CR>vat=
  augroup END


  augroup ChangeCursor
    autocmd VimEnter * let &t_EI .= "\<Esc>[0 q"
    autocmd VimEnter * let &t_SI = "\<Esc>]12;yellow\x7"
    autocmd VimLeave * silent !echo -ne "\033]112\007"
  augroup END

  augroup ChangeIcon
    "if filereadable("/usr/bin/xseticon")
    "if filereadable("~/.vim/nvim.png")
    " autocmd VimEnter * silent :execute "!xseticon -id $WINDOWID ~/.vim/nvim.png"
    " autocmd VimLeave * silent :execute "!xseticon -id $WINDOWID /usr/share/icons/gnome/32x32/apps/xfce-terminal.png"
    "endif
    "endif
  augroup END

  if has('nvim')
    autocmd BufEnter term://* set nobuflisted
  else
    augroup vimonly
      autocmd VimLeave * call system("echo -n $'" . escape(getreg(), "'") . "' | xsel -ib")
    augroup END
  endif


  augroup ToggleQuickFix
    function! ToggleQuickFix()
      if exists("g:qwindow")
        lclose
        unlet g:qwindow
      else
        try
          lopen 10
          let g:qwindow = 1
        catch
          echo "No Errors found!"
        endtry
      endif
    endfunction
    function! QFixToggle(forced)
      if exists("g:qfix_win") && a:forced == 0
        cclose
        unlet g:qfix_win
      else
        copen 10
        let g:qfix_win = bufnr("$")
      endif
    endfunction

    nmap <script> <silent> <F3> :call ToggleQuickFix()<CR>
    nmap <script> <silent> <F4> :call QFixToggle(0)<CR>
  augroup END

  "set omnifunc=syntaxcomplete#Complete
  " au BufNewFile,BufRead,BufEnter *.cpp,*.hpp set omnifunc=omni#cpp#complete#Main
  " Enable omni completion.
  " autocmd FileType css setlocal omnifunc=csscomplete#CompleteCSS
  " autocmd FileType html,markdown setlocal omnifunc=htmlcomplete#CompleteTags
  " auto complete closing tag name when entering </-[space]
  " autocmd Filetype html,markdown,xml iabbrev </ </<C-X><C-O>
  " autocmd FileType python setlocal omnifunc=jedi#completions
  " following autocommands are there to call neovim functions...
  " autocmd FileType python setlocal omnifunc=pythoncomplete#Complete
  " autocmd FileType javascript setlocal omnifunc=javascriptcomplete#CompleteJS
  " autocmd FileType xml setlocal omnifunc=xmlcomplete#CompleteTags
  " " Enable heavy omni completion.
  " if !exists('g:neocomplete#sources#omni#input_patterns')
  "   let g:neocomplete#sources#omni#input_patterns = {}
  " endif
endif

let &t_Co=256
set background=dark
" set termguicolors
let base16colorspace=256
if filereadable(expand("~/.vimrc_background"))
  source ~/.vimrc_background
else
  colorscheme base16-phd
endif


highlight ExtraWhitespace ctermbg=red guibg=red
syn match ExtraWhitespace /\s\+$/


if !has('nvim')
  set ttymouse=xterm2
  set ttyscroll=100             | " improves speed for terminal vim, incomp. with nvim
  set ttyfast                   | " improves speed for terminal vim (incomp. with nvim)
  " set termguicolors             | " When on, uses highlight-guifg and highlight-guibg attributes in the terminal (=24bit color) incomp. with nvim
else
  " shortcut \t opens a terminal in a horizontal split
  nnoremap <leader>t :new +terminal<CR>
endif

nnoremap <leader>r :syntax sync fromstart

" colorscheme base16-embers
" colorscheme base16-flat
" colorscheme base16-summerfruit-dark
" colorscheme base16-tommorow
" colorscheme base16-default-dark


" colorscheme customizations =========================
" override colorscheme's background color in order to honor the terminals background transparency



" if filereadable(expand("~/.vimrc_background"))
"   let base16colorspace=256
"   source ~/.vimrc_background
" endif
" set colorcolumn=80            | " show an indicator (different background in column 80)
" set title
" set t_ts=^[k
" set t_fs=^[\
" auto BufEnter * :set title | let &titlestring = 'v:' . expand('%')
" auto VimLeave * :set t_ts=^[k^[\
"
" ALTERNATIVE:                                        |
" LightLine_and_MiniBufExplorer: =====================.
" Plug 'itchyny/lightline.vim'
" let g:lightline = {
"       \ 'colorscheme': 'PaperColor',
"       \ 'separator': { 'left': "\ue0b0", 'right': "\ue0b2" },
"       \ 'subseparator': { 'left': "\ue0b1", 'right': "\ue0b3" }
"       \ }
" Plug 'fholgado/minibufexpl.vim'
" let g:miniBufExplAutoStart = 1
" let g:miniBufExplBRSplit = 1
" let g:miniBufExplShowBufNumbers = 0
" let g:miniBufExplSplitToEdge = 1
" let g:miniBufExplVSplit = 20   " column width in chars