I am adapting the LaTeX3 answer in this question: https://tex.stackexchange.com/a/61603

But I can't get the original MWE answer to compile using xelatex. I have renamed the variables, but the error is the same whether I use it verbatim (not counting the \str_case:nnn fix) or slightly adapted. So I am wondering if root syntax requirements have changed in the last couple of years since this question was answered?



\NewDocumentCommand{\BuildTablePortion}{ O{Default} m }{%
    \my_BuildTablePortion:nn { #1 } { #2 }%

\cs_new:Npn \my_BuildTablePortion:nn #1 #2
    \str_case:nnn { #2 }{%
    {START} { Start data here}%
    {END} { End Data here}%
    % other possible strings




  • There's no str_case:nnn and the solution of egreg has \prog_case:nnn – user31729 Oct 5 '15 at 17:05
  • 1
    \str_case:nnn has been renamed. If the third argument was code to be inserted when no match is found then the new name is \str_case:nnF – cgnieder Oct 5 '15 at 17:06
  • @clemens: You were quicker, please write the answer – user31729 Oct 5 '15 at 17:07
  • Thanks for noting: I fixed that old answer of mine. I think I searched for occurrences of \str_case:nnn, but that one escaped. You should have left a comment there, rather than asking a question. – egreg Oct 5 '15 at 17:11
  • @egreg: I find this question useful anyway – user31729 Oct 5 '15 at 17:42

\str_case:nnn has been renamed to \str_case:nnF. Actually all \<module>_case:nnn functions have been renamed to \<module>_case:nnF (also see Function renaming: \<thing>_case:nnn to \<thing>_case:nnF).

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