Jason wrote:

When using startregister/stopregister commands, if the range is only one one page, then while both a [f] and a [t] are written to the tui file, only one \registerfrom command is put in the tuo file. If there is only one range, it seems like the software deals with it nicely. However, if there are two ranges (like in the example below), then the index incorrectly assumes that the first \registerfrom command in the tuo file corresponds to the \registerto command.

Aha! Great work tracking this down Jason, I have been bitten by this bug many times in the past but not been able to isolate it. It would be really great if this could be fixed in the ruby script. Duncan