Re: problem with 'txiindexbackslashignore'

[Werner LEMBERG]

> +        \ifx\indexsortkey\empty
> +          \message{Empty index sort key near line \the\inputlineno}%
> +          \xdef\indexsortkey{ }%
> +        \fi
> 
> Do you think this would help fix this kind of problem?

Yes, thanks.  Maybe it makes sense to also emit

  Are you trying to index a backslash while
  `@set txiindexbackslashignore` is active?

This could be generalized to catch the other `txi*ignore` flags, too.


    Werner