-- Function to replace variations of Leandre with Léandre.
function Str(el)
    -- Case-insensitive substitution using pattern matching
    -- [Ll][Ee][Aa][Nn][Dd][Rr][Ee] matches Leandre in any capitalization
    el.text = el.text:gsub("[Ll][Ee][Aa][Nn][Dd][Rr][Ee]", "Léandre")
    return el
end