view .hgsigs @ 176:3f854e3bcdd1 2.2

client: raise KeyError from __getitem__ (BC)

object.__getitem__ is supposed to raise either IndexError or KeyError
(depending on whether the thing is a sequence or a mapping). Before,
we would raise ValueError because that's what the context constructor
raises.

I choose to raise KeyError because IndexError felt a bit too limiting.
This does sacrifice some magic with for loops handling IndexError.
However, iteration of this object should be handled by a custom
__iter__, so I don't think this is a problem.

c41442cb355d55ca152d5f13a95a6bf2ebc5b870 0 iD8DBQBOvGIzywK+sNU5EO8RAtNMAJ92vXmPkE35jrLlclws5h0TAFUHVQCfVjGoqNgnh+ZE7eI25Q/m555XvEU=