The function tokenize_string in the library euphoria/tokenize.e does not deal with nested C-style comments correctly. The function terminates the comment at the first */ no matter how many occurrences of /* there are. Creole uses tokenize_file which uses tokenize_string, so the fault can be demonstrated here.
/* Beginning of a C-style comment.
/* The comment is now nested to a second level.
*/ The comment should continue, returning to the first level
but tokenize has terminated the comment, as can be seen from the colours,
so this looks like code.
*/
The V4.1.0 interpreter ignores the entire nested comment correctly.
Arthur
GitHub