Editing Module:Gnoblin

local p = {}

function p.processTitle(frame)
    local input = frame.args[1] or ""
    if mw.ustring.match(input, "^%s*%{%{%s*[Tt]itle%s*[|}]") then
        return input
    end
    return frame:expandTemplate{
        title = "Title",
        args = { name = input }
    }
end

function p.stripHouse(frame)
    local name = frame.args[1]
    if not name or name == "" then
        name = mw.title.getCurrentTitle().text
    end

    local prefixes = { "House", "Clan", "Family", "Dynasty" }

    for _, prefix in ipairs(prefixes) do
        local pattern = "^[" .. mw.ustring.sub(prefix,1,1):lower() .. mw.ustring.sub(prefix,1,1):upper() .. "]" ..
                        mw.ustring.sub(prefix,2):lower() .. "%s+"
        name = mw.ustring.gsub(name, pattern, "")
    end

    return name
end

function p.unlink(frame)
    local text = frame.args[1] or ""
    text = mw.ustring.gsub(text, "[%[%]]", "")
    return text
end

-- New function: automatically adds parent categories
function p.addParentCategories(frame)
    local subcat = frame.args[1] or ""
    subcat = mw.text.trim(subcat)
    if subcat == "" then return "" end

    local result = "[[Category:" .. subcat .. "]]"

    -- Look for the category page
    local catTitle = mw.title.new("Category:" .. subcat)
    if catTitle and catTitle.exists then
        local catPage = mw.title.new(catTitle.prefixedText)
        local catContent = catPage:getContent() or ""
        -- Find all categories listed on the subcategory page
        for parent in catContent:gmatch("%[%[Category:(.-)%]%]") do
            if parent ~= subcat then
                result = result .. "\n[[Category:" .. parent .. "]]"
            end
        end
    end

    return result
end

return p