disable plugins on big files.

init.vim

" disable syntax highlighting in big files found on reddit
" https://www.reddit.com/r/neovim/comments/pz3wyc/comment/heyy4qf/?utm_source=reddit&utm_medium=web2x&context=3
" https://www.reddit.com/r/neovim/comments/s9kdsm/disable_treesitter_for_files_larger_than_x_lines/ lua version?

function DisableSyntaxTreesitter()
    echo("Big file, disabling syntax, treesitter and folding")
    if exists(':TSBufDisable')
        exec 'TSBufDisable autotag'
        exec 'TSBufDisable highlight'
        " etc...
    endif

    set foldmethod=manual
    syntax clear
    syntax off    " hmmm, which one to use?
    filetype off
    set noundofile
    set noswapfile
    set noloadplugins
endfunction

augroup BigFileDisable
    autocmd!
    " autocmd BufWinEnter * if getfsize(expand("%")) > 512 * 1024 | exec DisableSyntaxTreesitter() | endif
    autocmd BufReadPre,FileReadPre * if getfsize(expand("%")) > 512 * 1024 | exec DisableSyntaxTreesitter() | endif

augroup END