My Vim settings

.vimrc

" NEEDED FOR THIS FILE TO WORK:
" 1. INSTALL VIM-PLUG FROM ITS GITHUB PAGE
" 2. RUN :PlugInstall in Vim
" 3. PIP INSTALL POWERLINE
" 4. INSTALL COC.NVIM
" Plugins will be downloaded under the specified directory.
call plug#begin('~/.vim/plugged')

" Declare the list of plugins.
Plug 'sheerun/vim-polyglot'
" For javascript
Plug 'dense-analysis/ale'
" For fuzzy searching within files and project
Plug 'junegunn/fzf', { 'do': { -> fzf#install() } }
Plug 'junegunn/fzf.vim'
" Auto completion
Plug 'neoclide/coc.nvim', {'branch': 'release'}
" Tags management
Plug 'ludovicchabant/vim-gutentags'
" Powerline status line
"Plug 'powerline/powerline'

" Navigating direcotries
Plug 'preservim/nerdtree'

" List ends here. Plugins become visible to Vim after this call.
call plug#end()

" Don't try to be vi compatible
set nocompatible

" Helps force plugins to load correctly when it is turned back on below
filetype off
set history=500

" Set to auto read when a file is changed from the outside
set autoread
au FocusGained,BufEnter * checktime

" Fast saving
nmap <leader>w :w!<cr>
" :W sudo saves the file
" (useful for handling the permission-denied error)
command! W execute 'w !sudo tee % > /dev/null' <bar> edit!



" TODO: Load plugins here (pathogen or vundle)

" Turn on syntax highlighting
syntax on

" For plugins to load correctly
filetype plugin indent on

" TODO: Pick a leader key
" let mapleader = ","

" Security
set modelines=0

" Show line numbers
set number

" Show file stats
set ruler

" Encoding
set encoding=utf-8

" Whitespace
set wrap
set textwidth=79
set formatoptions=tcqrn1
set tabstop=2
set shiftwidth=2
set softtabstop=2
set expandtab
set noshiftround

" Cursor motion
set scrolloff=3
set backspace=indent,eol,start
set matchpairs+=<:> " use % to jump between pairs
runtime! macros/matchit.vim

" Move up/down editor lines
nnoremap j gj
nnoremap k gk

" Allow hidden buffers
set hidden

" Rendering
set ttyfast


" Last line
set showmode
set showcmd

" Searching
nnoremap / /\v
vnoremap / /\v
set hlsearch
set incsearch
set ignorecase
set smartcase
set showmatch
map <leader><space> :let @/=''<cr> " clear search

" Remap help key.
inoremap <F1> <ESC>:set invfullscreen<CR>a
nnoremap <F1> :set invfullscreen<CR>
vnoremap <F1> :set invfullscreen<CR>

" Textmate holdouts

" Formatting
map <leader>q gqip

" Visualize tabs and newlines
set listchars=tab:▸\ ,eol:¬
" Uncomment this to enable by default:
" set list " To enable by default
" Or use your leader key + l to toggle on/off
map <leader>l :set list!<CR> " Toggle tabs and EOL

" Color scheme (terminal)
set t_Co=256
set background=dark
let g:solarized_termcolors=256
let g:solarized_termtrans=1
" put https://raw.github.com/altercation/vim-colors-solarized/master/colors/solarized.vim
" in ~/.vim/colors/ and uncomment:
" colorscheme solarized
nnoremap <C-p> :Files<CR>

nnoremap <Leader>b :Buffers<CR>
nnoremap <Leader>h :History<CR>
nnoremap <Leader>t :BTags<CR>
nnoremap <Leader>T :Tags<CR>
let g:ale_sign_error = '❌'
let g:ale_sign_warning = '⚠️'



" Completion triggering (coc nvim)
" 
" use <tab> for trigger completion and navigate to the next complete item
function! s:check_back_space() abort
  let col = col('.') - 1
    return !col || getline('.')[col - 1]  =~ '\s'
endfunction

inoremap <silent><expr> <Tab>
      \ pumvisible() ? "\<C-n>" :
  \ <SID>check_back_space() ? "\<Tab>" :
  \ coc#refresh()
" Remap keys for gotos
 nmap <silent> gd <Plug>(coc-definition)
 nmap <silent> gy <Plug>(coc-type-definition)
 nmap <silent> gi <Plug>(coc-implementation)
 nmap <silent> gr <Plug>(coc-references)

 " Highlight symbol under cursor on CursorHold
 autocmd CursorHold * silent call CocActionAsync('highlight')
 """""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" => VIM user interface
"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" Set 7 lines to the cursor - when moving vertically using j/k
set so=7
set cmdheight=1

" Configure backspace so it acts as it should act
set backspace=eol,start,indent
set whichwrap+=<,>,h,l

" Ignore case when searching
set ignorecase

" When searching try to be smart about cases
set smartcase

" Highlight search results
set hlsearch

" Makes search act like search in modern browsers
set incsearch

" Don't redraw while executing macros (good performance config)
set lazyredraw

" No annoying sound on errors
set noerrorbells
set novisualbell
set t_vb=
set tm=500

" Add a bit extra margin to the left
set foldcolumn=1


"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" => Moving around, tabs, windows and buffers
"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" Return to last edit position when opening files (You want this!)
au BufReadPost * if line("'\"") > 1 && line("'\"") <= line("$") | exe "normal! g'\"" | endif




""""""""""""""""""""""""""""""
" => Status line
""""""""""""""""""""""""""""""
" Always show the status line
" set laststatus=2

" Format the status line
" set statusline=\ %{HasPaste()}%F%m%r%h\ %w\ \ CWD:\ %r%{getcwd()}%h\ \ \ Line:\ %l\ \ Column:\ %c


"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" => Editing mappings
"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" Delete trailing white space on save, useful for some filetypes ;)
fun! CleanExtraSpaces()
    let save_cursor = getpos(".")
    let old_query = getreg('/')
    silent! %s/\s\+$//e
    call setpos('.', save_cursor)
    call setreg('/', old_query)
endfun

if has("autocmd")
    autocmd BufWritePre *.txt,*.js,*.py,*.wiki,*.sh,*.coffee :call CleanExtraSpaces()
endif

"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" => Spell checking
"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" Pressing ,ss will toggle and untoggle spell checking
map <leader>ss :setlocal spell!<cr>

" Shortcuts using <leader>
map <leader>sn ]s
map <leader>sp [s
map <leader>sa zg
map <leader>s? z=



"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" => Helper functions
"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" Returns true if paste mode is enabled
function! HasPaste()
    if &paste
        return 'PASTE MODE  '
    endif
    return ''
endfunction

" Don't close window, when deleting a buffer
command! Bclose call <SID>BufcloseCloseIt()
function! <SID>BufcloseCloseIt()
    let l:currentBufNum = bufnr("%")
    let l:alternateBufNum = bufnr("#")

    if buflisted(l:alternateBufNum)
        buffer #
    else
        bnext
    endif

    if bufnr("%") == l:currentBufNum
        new
    endif

    if buflisted(l:currentBufNum)
        execute("bdelete! ".l:currentBufNum)
    endif
endfunction

function! CmdLine(str)
    call feedkeys(":" . a:str)
endfunction

function! VisualSelection(direction, extra_filter) range
    let l:saved_reg = @"
    execute "normal! vgvy"

    let l:pattern = escape(@", "\\/.*'$^~[]")
    let l:pattern = substitute(l:pattern, "\n$", "", "")

    if a:direction == 'gv'
        call CmdLine("Ack '" . l:pattern . "' " )
    elseif a:direction == 'replace'
        call CmdLine("%s" . '/'. l:pattern . '/')
    endif

    let @/ = l:pattern
    let @" = l:saved_reg
endfunction



"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" => Parenthesis/bracket
""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
vnoremap $1 <esc>`>a)<esc>`<i(<esc>
vnoremap $2 <esc>`>a]<esc>`<i[<esc>
vnoremap $3 <esc>`>a}<esc>`<i{<esc>
vnoremap $$ <esc>`>a"<esc>`<i"<esc>
vnoremap $q <esc>`>a'<esc>`<i'<esc>
vnoremap $e <esc>`>a`<esc>`<i`<esc>

" Map auto complete of (, ", ', [
inoremap $1 ()<esc>i
inoremap $2 []<esc>i
inoremap $3 {}<esc>i
inoremap $4 {<esc>o}<esc>O
inoremap $q ''<esc>i
inoremap $e ""<esc>i


" Set extra options when running in GUI mode
if has("gui_running")
    set guioptions-=T
    set guioptions-=e
    set t_Co=256
    set guitablabel=%M\ %t
endif

set ai "Auto indent
set si "Smart indent
set wrap "Wrap lines

" Enable powerline status bar

set laststatus=2           " Always display the status bar
"set powerline_cmd="py3"    " Tell powerline to use Python 3
python3 from powerline.vim import setup as powerline_setup
python3 powerline_setup()
python3 del powerline_setup
" Saves whenever text is changed
autocmd TextChanged,TextChangedI *.md silent write

" Tab Navigation
nnoremap th :tabnext<CR>
nnoremap tl :tabprev<CR>
nnoremap tn :tabnew<CR>
nnoremap td :tabclose<CR>