How do I add a section to mini.statusline?

[webmandman]

I'm using lazy.nvim and this is my config:

  { -- Collection of various small independent plugins/modules
    'echasnovski/mini.nvim',
    config = function()
      -- Better Around/Inside textobjects
      --
      -- Examples:
      --  - va)  - [V]isually select [A]round [)]paren
      --  - yinq - [Y]ank [I]nside [N]ext [']quote
      --  - ci'  - [C]hange [I]nside [']quote
      require('mini.ai').setup { n_lines = 500 }

      -- Add/delete/replace surroundings (brackets, quotes, etc.)
      --
      -- - saiw) - [S]urround [A]dd [I]nner [W]ord [)]Paren
      -- - sd'   - [S]urround [D]elete [']quotes
      -- - sr)'  - [S]urround [R]eplace [)] [']
      require('mini.surround').setup()

      -- Simple and easy statusline.
      --  You could remove this setup call if you don't like it,
      --  and try some other statusline plugin
      local statusline = require 'mini.statusline'
      -- set use_icons to true if you have a Nerd Font
      statusline.setup {
        use_icons = vim.g.have_nerd_font,
      }

      ---@diagnostic disable-next-line: duplicate-set-field
      statusline.section_diagnostics = function()
        return require('project_nvim').get_current_project()
      end

      -- You can configure sections in the statusline by overriding their
      -- default behavior. For example, here we set the section for
      -- cursor location to LINE:COLUMN
      ---@diagnostic disable-next-line: duplicate-set-field
      statusline.section_location = function()
        return '%2l:%-2v'
      end

      -- ... and there is more!
      --  Check out: https://github.com/echasnovski/mini.nvim
    end,
  },

As you can see I overwrote the diagnostics section. I'd like not to overwrite that default section but add a new section. It can be last item in the left or center or first item in the right. Any help would be greatly appreciated.

[echasnovski]

Customizing statusline structure in 'mini.statusline' is done by completely overriding content function for active and/or inactive windows. Here is a reference example of current default function for active window. So instead of overriding the section_location(), the suggested approach is to have that default content with line local location = '%2l:%-2v' instead of calling section_location().

The overall setup code will look something like this:

local active_content = function()
  -- Your code goes here
end
require('mini.statusline').setup({ content = { active = active_content } })