revamped vimrc config

vimrc

@@ -1,66 +1,74 @@
-set nocp
-" setting FF type
-set ff=unix
-set laststatus=2
+"---------- Basic ----------
+set nocompatible
+set noswapfile    "disable ugly .swp files
+set history=1000
+set scrolloff=2   "number of screen lines below/above cursor while scrolling
+set undodir=~/.vim/undodir
+set undofile
+set fileformat=unix
+set showcmd       "show command at bottom bar
+set lazyredraw
+set showmatch     "show matching parenthesis or similar
 
-"set leader
-let mapleader="\\"
-"run pylint
-nnoremap <leader>] :!pylint %<CR>
-nnoremap <leader>e :!pylint -E %<CR>
-
-"set foldmethod=indent
-set foldlevel=-1
-"set noexpandtab
-set tabstop=4
-set shiftwidth=4
-set expandtab
-colorscheme desert
-
-"call pathogen#infect()
-syntax on
-filetype plugin indent on
-call pathogen#infect()
-"call pathogen#runtime_append_all_bundles()
-call pathogen#helptags()
+"----------- Plugins --------------
+call plug#begin('~/.vim/plugins')
+Plug 'gruvbox-community/gruvbox'
+Plug 'neoclide/coc.nvim', {'branch': 'release'}
+Plug 'sheerun/vim-polyglot'
+call plug#end()
 
-filetype on
+"---------- Appearance ----------
+set laststatus=2 "show filename in status bar
+colorscheme gruvbox
+set background=dark
+set colorcolumn=80
+highlight ColorColumn ctermbg=0 "80 column color
+set linebreak
+"set cursorcolumn  "highlight column where cursor is
+"set cursorline "highlight line under the cursor
 
-"line number
+"---------- Line Number ----------
+set numberwidth=3 "required for showing line & relative line number
+set relativenumber "show relative line number
 set number
+set ruler "status line
+set rulerformat=%l,%c%V
 
-"set spell check
-"set spell
+"---------- Indentation -----------
+set expandtab
+set tabstop=4
+set shiftwidth=4
+set autoindent
+set softtabstop=4 "remove tab by backspace even expandtab set
 
-"au FileType python set omnifunc=pythoncomplete"Complete
-let g:SuperTabDefaultCompletionType = "context"
-set completeopt=menuone,longest,preview
+"tab-spaces visualisation
+set list
+set listchars=tab:>-
+set textwidth=79 "wrap after 79 char
 
-map <c-n> :NERDTreeToggle<CR>
-let g:NERDTreeNodeDelimiter="\t"
-map <c-g> :GundoToggle<CR>
-"searching
-map <leader>a: Ack!
+filetype indent on "load file type specific indent files from ~/.vim/indent/XXX.vim
 
-"goto definition
-let g:jedi#goto_definitions_command = "<leader>g"
+"---------- Code Formatting ---------
+syntax on
+set filetype=on
 
-"hilight cursor col
-set t_Co=256
-set colorcolumn=80 "limit 80 cols
+"---------- Searching ------------
+set incsearch "incremental search
+set ignorecase "ignore case-sensitivity
+set smartcase "switch to case-sensitive on Upper case char
 set hlsearch
-highlight Search ctermbg=yellow ctermfg=black
-highlight ColorColumn ctermfg=white
 
-func StripTrailingWS()
-	%s/\s\+$//ge
-endfunc
-
-noremap <leader>w :call StripTrailingWS()<CR>
+"----------- Mapping -------------
+let mapleader = ","
+nnoremap <leader>e :!pylint -E %<CR>
+noremap  <leader>w :call TrimTrailingWhiteSpaces()<CR>
+noremap <leader><space> :nohl<CR>
 
 
-autocmd FileType python setlocal et sw=4 ts=4
-set viminfo='20,<1000,s1000
 
-" for Mac only
-set backspace=indent,eol,start
+"----------- Functions -----------
+func TrimTrailingWhiteSpaces()
+    let l:save = winsaveview()
+    keeppatterns %s/\s\+$//e
+    call winrestview(l:save)
+endfunc