Export the selected lines without tags and line breaks, and display them in a new window

ExportText.lua

script_name = "Export Text"
script_description = "Export the selected lines without tags and line breaks, and display them in a new window"
script_version = "0.2"
script_author = "Vardë"

function export_text(subs, sel)
    alltext = ''
    for k, i in ipairs(sel) do
        line = subs[i]
        clean = line.text:gsub("{[^}]+}", "")
        clean = clean:gsub("\\N", " ")
        alltext = alltext .. clean .. '\n'
    end
    local conf = {
        {
            class = "textbox", name = "txt",
            x = 0, y = 0, width = 40, height = 20,
            text = alltext
        }
    }
    aegisub.dialog.display(conf, {"Close"})
end

aegisub.register_macro(script_name, script_description, export_text)