bug#35624: log-view-diff regression

[Juri Linkov]

>> 1. the case when region's beginning (b) and region's end (e)
>
> What does "e" signify in these examples?

"e" signifies the end of the region.

> The '=' command should show the combined effect of all the changes
> included in the region, so it should compare the last revision with
> the one before the first.
>
> Am I missing something?

If the beginning of the region is on the line with revision g7
and the end of the region is on the line with revision f6,
do you think it should show differences between g7 and f6?