changed font (nerdfont) and theme (gruvbox) for terminal and neovim

neovim/.config/nvim/init.vim

@@ -3,22 +3,26 @@ let $MYPLUGDIRECTORY = "~/.config/nvim/plugged/"
 "plugins
 call plug#begin($MYPLUGDIRECTORY)
 
-Plug 'scrooloose/nerdtree'                      " file tree
+Plug 'preservim/nerdtree'                       " file tree
+Plug 'Xuyuanp/nerdtree-git-plugin'              " git plugin for nerdtree
+Plug 'ryanoasis/vim-devicons'                   " devicons for nerdtree
 Plug 'luochen1990/rainbow'                      " rainbow colored parenthesis and brakets
-Plug 'itchyny/lightline.vim'                    " statusline
+Plug 'vim-airline/vim-airline'                  " statusline
 Plug 'preservim/nerdcommenter'                  " easier comment management
+Plug 'airblade/vim-gitgutter'                   " show git changes
 Plug 'neoclide/coc.nvim', {'branch': 'release'} " code completion
 Plug 'jiangmiao/auto-pairs'                     " automatic pairs
 Plug 'machakann/vim-sandwich'                   " manipulate elements surrounding other elements
-Plug 'airblade/vim-gitgutter'                   " show git changes
+Plug 'tpope/vim-fugitive'                       " git master tool
 Plug 'vim-scripts/colorizer'                    " colorize color codes
 Plug 'honza/vim-snippets'                       " snippets
 Plug 'lervag/vimtex'                            " vimtex
+Plug 'morhetz/gruvbox'                          " gruvbox colorscheme
 
 call plug#end()
 
 " coc plugins
-let g:coc_global_extensions = ['coc-snippets', 'coc-git', 'coc-vimtex']
+let g:coc_global_extensions = ['coc-snippets', 'coc-git', 'coc-vimtex', 'coc-python', 'coc-vimlsp', 'coc-json']
 
 "neovim-remote for vimtex
 let g:vimtex_compiler_progname = 'nvr'
@@ -26,8 +30,10 @@ let g:vimtex_compiler_progname = 'nvr'
 "vimtex
 let g:vimtex_view_method = 'zathura'
 
-" lightline
+" airline
 set laststatus=2
+let g:airline#extensions#tabline#enabled = 1
+let g:airline#extensions#tabline#formatter = 'unique_tail'
 
 " activate spell-checking
 set spell
@@ -46,6 +52,9 @@ autocmd StdinReadPre * let s:std_in=1
 autocmd VimEnter * if argc() == 0 && !exists("s:std_in") | NERDTree | endif
 autocmd VimEnter * if argc() == 1 && isdirectory(argv()[0]) && !exists("s:std_in") | exe 'NERDTree' argv()[0] | wincmd p | ene | exe 'cd '.argv()[0] | endif
 autocmd bufenter * if (winnr("$") == 1 && exists("b:NERDTree") && b:NERDTree.isTabTree()) | q | endif
+let NERDTreeShowHidden=1
+" enable nerdfonts for git status in nerdtree
+let g:NERDTreeGitStatusUseNerdFonts=1
 
 set nocompatible            " disable compatibility to old-time vi
 set showmatch               " show matching brackets.
@@ -64,13 +73,16 @@ let maplocalleader=" "      " set localleader to space
 set timeoutlen=1000         " set timeout length
 
 "colors
-colorscheme default
+let g:gruvbox_contrast_dark='hard'
+colorscheme gruvbox
+set background=dark
+
 "extra specified colors
 highlight ColorColumn ctermbg=8
 highlight clear SignColumn
-highlight GitGutterAdd ctermfg=2
-highlight GitGutterChange ctermfg=3
-highlight GitGutterDelete ctermfg=1
+highlight GitGutterAdd ctermfg=142
+highlight GitGutterChange ctermfg=208
+highlight GitGutterDelete ctermfg=124
 highlight LineNr ctermfg=7
 highlight CursorLineNr ctermfg=7
 
@@ -89,14 +101,6 @@ augroup numbertoggle
     autocmd BufEnter,FocusGained,InsertLeave    * set relativenumber
     autocmd BufLeave,FocusLost,InsertEnter      * set norelativenumber
 augroup END
-"gitgutter update speed
-set updatetime=100
-
-"gitgutter signs
-let g:gitgutter_sign_added = '+'
-let g:gitgutter_sign_modified = '~'
-let g:gitgutter_sign_removed = '-'
-let g:gitgutter_sign_removed_first_line = '^'
 
 "--------------------
 "mappings
@@ -116,6 +120,8 @@ nnoremap öq :q<CR>
 nnoremap <leader>tn :tabnew<space>
 "show buffers
 nnoremap <Leader>b :buffers<CR>:buffer<Space>
+" cycle buffers
+nnoremap <Tab> :bnext<CR>
 "reload settings
 nnoremap <leader>rl :source ~/.config/nvim/init.vim<CR>
 "NERDTree commands