nvim/lua/plugins/lualine.lua

--[[

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              __             _             _
             / _|___     ___| |_ __ _  ___| | __
            | ||_  /____/ __| __/ _` |/ __| |/ /
            |  _/ /_____\__ \ || (_| | (__|   <
            |_|/___|    |___/\__\__,_|\___|_|\_\

                Neovim 0.12 configuration
                  (c) Frank Zechert 2026
]]

local function expandtabs()
	if not vim.bo.expandtab then
		return string.format("%s %d", vim.g.ui.listchars.leadtab, vim.bo.tabstop)
	else
		local width = vim.bo.shiftwidth
		if width == 0 then
			width = vim.bo.tabstop
		end
		return string.format("%s %d", vim.g.ui.listchars.nbsp, width)
	end
end

local function windownumber()
	return string.format("%s %s", vim.g.ui.symbols.window, vim.fn.winnr())
end

local function treesitter_status()
	local ok, parser = pcall(vim.treesitter.get_parser, 0)
	if not ok or not parser then
		return "T̅"
	else
		return "T"
	end
end

return {
	{
		"nvim-lualine/lualine.nvim",
		dependencies = {
			{ "nvim-tree/nvim-web-devicons" },
		},
		lazy = false,
		opts = {
			options = {
				component_separators = vim.g.ui.symbols.component_separators,
				section_separators = vim.g.ui.symbols.section_separators,
				globalstatus = false,
				refresh = {
					refresh_time = 33, -- ~30 fps
				}
			},
			sections = {
				lualine_a = { "mode" },
				lualine_b = { "searchcount", "selectioncount" },
				lualine_c = {
					{ "filename", file_status = true, newfile_status = true, path = 1 },
				},
				lualine_x = {
					"encoding",
					{ "fileformat", icons_enabled = true, symbols = { unix = "LF", dos = "CRLF", mac = "CR" } },
					expandtabs,
					"filesize"
				},
				lualine_y = {},
				lualine_z = { "location", "progress" },
			},
			inactive_sections = {
				lualine_a = {},
				lualine_b = {},
				lualine_c = {
					{ "filename", file_status = true, newfile_status = true, path = 1 },
				},
				lualine_x = {
					"encoding",
					{ "fileformat", icons_enabled = true, symbols = { unix = "LF", dos = "CRLF", mac = "CR" } },
					expandtabs,
					"filesize",
				},
				lualine_y = {},
				lualine_z = { "location", "progress" },
			},
			tabline = {
				lualine_a = {
					{ "buffers", mode = 2, use_mode_colors = true },
				},
				lualine_b = {},
				lualine_c = {},
				lualine_x = {},
				lualine_y = {},
				lualine_z = {
					{ "tabs", mode = 0, use_mode_colors = true },
				},
			},
			winbar = {
				lualine_a = { windownumber },
				lualine_b = { "filename", "filetype" },
				lualine_c = { "diagnostics" },
				lualine_x = { treesitter_status },
				lualine_y = { "branch", "diff" },
				lualine_z = {},
			},
			inactive_winbar = {
				lualine_a = { windownumber },
				lualine_b = {},
				lualine_c = {},
				lualine_x = {},
				lualine_y = {},
				lualine_z = {},
			}
		},
		keys = {
			{ "<leader>b1", "<Cmd>:LualineBuffersJump! 1<CR>", desc = "Show Buffer 1" },
			{ "<leader>b2", "<Cmd>:LualineBuffersJump! 2<CR>", desc = "Show Buffer 2" },
			{ "<leader>b3", "<Cmd>:LualineBuffersJump! 3<CR>", desc = "Show Buffer 3" },
			{ "<leader>b4", "<Cmd>:LualineBuffersJump! 4<CR>", desc = "Show Buffer 4" },
			{ "<leader>b5", "<Cmd>:LualineBuffersJump! 5<CR>", desc = "Show Buffer 5" },
			{ "<leader>b6", "<Cmd>:LualineBuffersJump! 6<CR>", desc = "Show Buffer 6" },
			{ "<leader>b7", "<Cmd>:LualineBuffersJump! 7<CR>", desc = "Show Buffer 7" },
			{ "<leader>b8", "<Cmd>:LualineBuffersJump! 8<CR>", desc = "Show Buffer 8" },
			{ "<leader>b9", "<Cmd>:LualineBuffersJump! 9<CR>", desc = "Show Buffer 9" },
			{ "<leader>b0", "<Cmd>:LualineBuffersJump! 10<CR>", desc = "Show Buffer 10" },
			{
				"<leader>bb",
				function()
					local index = tonumber(vim.fn.input("Jump to Buffer: "))
					if index then
						vim.cmd("LualineBuffersJump! " .. index)
					end
				end,
				desc = "Show Buffer ?"
			},
		}
	}
}