.vimrc custom config for colorscheme, autostart session, tabs, window size and font

.vimrc

colorscheme slate

augroup sourcesession
        autocmd!
        autocmd VimEnter * nested
        \ if !argc() && empty(v:this_session) && filereadable('Session.vim') |
        \   source Session.vim |
        \ endif
augroup END

set tabstop=4
set shiftwidth=4
set expandtab

set lines=90 // might not work correctly in terminal
set columns=210 // might not work correctly in terminal

set guifont=Ubuntu\ Mono\ 9
set history=1000

set window=51