bad graph with reverse log

[vivien]

tig supports reverse log, but the graph fails:

$ tig --reverse

Maybe graph drawing should be disabled in reverse log?

[benhodgson]

+1

[BenBergman]

Having just spent a ton of time in the graph functions, I think disabling the graph for --reverse makes sense. The logic essentially draws rows one at a time as needed knowing only about the current commit and the parents of the previous commits that have not yet shown up. Doing this in reverse pretty much means you need to load the entire history and draw it backwards.

git log does not allow the --reverse option to be combined with the --graph option either, so I don't think disabling the reverse graph would be all that bad or unexpected.

[jonas]

As a nice side effect, Tig's internal option state is now based on arguments passed on the command line (aa6b0e5).