Re: [bug #43122] texi2dvi does not compile enough times to get toc

[Gavin Smith]

> In other words, if there are N TeX runs then:
> - I did *NOT* mean that you need only one index file production
> - but I did mean that you need N-1 index file production.
>
Got it (I think) - the index files can change from run to run, because
they contain page numbers, but if the index files don't change, then
the sorted index files won't change either, so it's a waste of time
re-producing them. So only the unsorted index files need to be
compared.