Add vim nerdtree, nerdcommenter

etc/vimrc

@@ -46,23 +46,56 @@ set laststatus=2
 set noshowmode
 set nowrap
 
-" Plugins
+"" Plugin configuration
+
+" Lightline
 let g:lightline = {}
 let g:lightline.colorscheme  = 'Tomorrow_Night_Bright'
 let g:lightline.separator    =  {'left': "\ue0b0", 'right': "\ue0b2"}
 let g:lightline.subseparator =  {'left': "\ue0b1", 'right': "\ue0b3"}
 
+" Lightline-bufferline
 let g:lightline.tabline          = {'left': [['buffers']], 'right': [['close']]}
 let g:lightline.component_expand = {'buffers': 'lightline#bufferline#buffers'}
 let g:lightline.component_type   = {'buffers': 'tabsel'}
 
 let g:lightline#bufferline#min_buffer_count = 2
 
+" NERD Commenter
+let g:NERDCommentEmptyLines=1
+let g:NERDSpaceDelims=1
+let g:NERDTrimTrailingWhitespace=1
+
+" NERD Tree
+let g:NERDTreeMinimalUI=1
+let g:NERDTreeAutoDeleteBuffer=1
+
 "" Autocommands
 
 " Remove trailing whitespace in the following filetypes
 autocmd FileType c,cpp,ino,java,py,php,sh,tex autocmd BufWritePre <buffer> %s/\s\+$//e
 
+" Close vim if only window is NERD Tree
+autocmd bufenter * if (winnr("$") == 1 && exists("b:NERDTree") && b:NERDTree.isTabTree()) | q | endif
+
+"" Functions
+
+function! CloseTab()
+	let bufNr = bufnr('%')
+	let nerdTreeStatus = exists('t:NERDTreeBufName') && bufwinnr(t:NERDTreeBufName) != -1
+	let currentFile = expand('%:t')
+
+	if nerdTreeStatus
+		execute "NERDTreeClose"
+		if currentFile !~# "NERD_tree"
+			execute "bw "bufNr
+			execute "NERDTreeToggle"
+		endif
+	else
+		execute "bw "bufNr
+	endif
+endfunction
+
 "" Keybindings
 
 " Tab/Shift+Tab functionality
@@ -73,7 +106,11 @@ vnoremap <Tab> >gv
 vnoremap <S-Tab> <gv
 
 " Buffer switching
-nnoremap <C-h> :bprevious<CR>
-nnoremap <C-l> :bnext<CR>
+nnoremap <silent> <C-h> :bprevious<CR>
+nnoremap <silent> <C-l> :bnext<CR>
+nnoremap <silent> <C-w> :call CloseTab()<CR>
 nmap <Leader>1 <Plug>lightline#bufferline#go(1)
 
+" Toggle NERD Tree
+nnoremap <silent> <C-t> :NERDTreeToggle<CR>
+