@subheading idn2_strerror
@anchor{idn2_strerror}
@deftypefun {const char *} {idn2_strerror} (int @var{rc})
@var{rc}: return code from another libidn2 function.

Convert internal libidn2 error code to a humanly readable string.
The returned pointer must not be de-allocated by the caller.

Return value: A humanly readable string describing error.
@end deftypefun

