Module:Lead

Documentation for this module may be created at Module:Lead/doc

local p = {}

function p.lead(frame)
    local title = frame.args[1]
    if not title then
        return "Error: No page title provided."
    end

    -- Create a new title object
    local pageTitle = mw.title.new(title)
    if not pageTitle then
        return "Error: Invalid page title."
    end

    -- Transclude and expand templates from the page
    local fullContent = frame:expandTemplate{ title = title }

    -- Find the position of the first heading (== Heading ==)
    local headingStart = string.find(fullContent, "\n==+[^=]")
    local leadContent

    if headingStart then
        leadContent = string.sub(fullContent, 1, headingStart - 1)
    else
        leadContent = fullContent
    end

    return leadContent .. frame:preprocess("<div>{{Button|Full Rules Text|l=" .. title .. "}}</div>")
end

return p