vim.opt.writebackup=false -- if a file is being edited by another program (or was written to file while editing with another program), it is not allowed to be edited
vim.opt.writebackup=true -- Write a backup file, before saving.
vim.opt.expandtab=true-- convert tabs to spaces
vim.opt.expandtab=true-- convert tabs to spaces
vim.opt.shiftwidth=2-- the number of spaces inserted for each indentation
vim.opt.shiftwidth=2-- the number of spaces inserted for each indentation