updated.

nvim/init.vim

@@ -17,15 +17,21 @@ Plug 'rust-lang/rust.vim'
 Plug 'Gavinok/vim-troff'
 Plug 'vim-airline/vim-airline'
 Plug 'Yggdroot/indentLine'
+Plug 'vim-airline/vim-airline-themes'
 call plug#end()
 
 " configurations.
 set number relativenumber
 set tabstop=8 softtabstop=0 expandtab shiftwidth=4 smarttab
-set softtabstop=0 noexpandtab
 autocmd BufRead *.md set spell spelllang=en_uk
 highlight LineNr ctermfg=8
 
+" airline configuration.
+let g:airline_theme='minimalist'
+let g:airline_powerline_fonts=1
+let g:airline#extensions#tabline#enabled = 1
+let g:airline#extensions#wordcount#enabled=1
+
 " vimtex configuration.
 let g:tex_flavor='latex'
 let g:vimtex_view_method='zathura'
@@ -36,9 +42,13 @@ let g:vimtex_view_general_viewer='zathura'
 let g:pymode_lint_ignore="E501,W"
 let g:pymode_lint_ignore="E302,W"
 
-"Set color of PEP8 line end column to grey.
+" Set color of PEP8 line end column to grey.
 autocmd BufRead *.py hi ColorColumn ctermbg=8
 
 " other plugins configuration
 let g:indentLine_leadingSpaceEnabled=1
-let g:airline#extensions#wordcount#enabled=1
+let g:indentLine_leadingSpaceChar = '⬞'
+
+" Custom commands
+" Uses F4 to find and replace every instance of the word under the cursor.
+nnoremap <F4> :%s/<c-r><c-w>/<c-r><c-w>/gc<c-f>$F/i