neovim plugin for creating marks in the line number column
$ cd ~/.config/nvim/pack/nvim/start
$ git clone {field-marks repository}~/.config/nvim/init.lua :
-- just an example, keyboard shortcuts can be any
vim.keymap.set('n', '<leader>m', require('field-marks').field_mark_toggle)
vim.keymap.set('n', '<leader>mm', require('field-marks').field_mark_delall)if you are not satisfied with the default colors, then before key mapping, call:
require('field-marks').setup({
bg='white',
fg='black'
})