vim.o.number = true                         -- line numbers
vim.o.list = true                           -- show whitespace
vim.o.colorcolumn = '80'                    -- line length marker (comma sep.)
vim.o.wrap = false

vim.o.expandtab = true                      -- indent using spaces
vim.o.tabstop = 4                           -- 1 tab = 4 spaces
vim.o.shiftwidth = 4                        -- 1 indentation = 4 spaces

vim.o.completeopt = 'menu,menuone,noselect' -- completion popup

-- theme
vim.o.termguicolors = true                  -- 24 bit colours
vim.o.background = 'dark'
packer.use {
    'https://github.com/owozsh/amora',
    config = function()
        vim.cmd('colorscheme amora')
    end
}

-- remove trailing whitespace
function remove_trailing_whitespace()
    local curpos = vim.api.nvim_win_get_cursor(0)
    vim.cmd([[keeppatterns %s/\s\+$//e]])
    vim.api.nvim_win_set_cursor(0, curpos)
end

vim.api.nvim_create_autocmd(
    { "BufWritePre" },
    {
        pattern = {
            "*.lua", "*.cpp", "*.hpp"
        },
        command = 'lua remove_trailing_whitespace()'
    }
)