a bit sloppy but working

lua/config/nvim-bqf.lua

@@ -0,0 +1,23 @@
+require("bqf").setup({
+	auto_enable = true,
+	auto_resize_height = true,
+	preview = {
+		win_height = 12,
+		win_vheight = 12,
+		delay_syntax = 80,
+		border_chars = { "┃", "┃", "━", "━", "┏", "┓", "┗", "┛", "█" },
+		should_preview_cb = function(bufnr, qwinid)
+			local ret = true
+			local bufname = vim.api.nvim_buf_get_name(bufnr)
+			local fsize = vim.fn.getfsize(bufname)
+			if fsize > 100 * 1024 then
+				-- skip file size greater than 100k
+				ret = false
+			elseif bufname:match("^fugitive://") then
+				-- skip fugitive buffer
+				ret = false
+			end
+			return ret
+		end,
+	},
+})