span class='kw'>postfix</span> <span class='kw'>=</span> <span class='st'>""</span>)

<span class='fu'>to_upper_lower_case</span>(<span class='no'>string</span>, <span class='kw'>abbreviations</span> <span class='kw'>=</span> <span class='kw'>NULL</span>,
  <span class='kw'>sep_in</span> <span class='kw'>=</span> <span class='st'>"[^[:alnum:]]"</span>, <span class='kw'>parsing_option</span> <span class='kw'>=</span> <span class='fl'>1</span>,
  <span class='kw'>transliterations</span> <span class='kw'>=</sp