graphlog: add a way to test the 'groupbranchiter' function We add an experimental config option to use the topological sorting. I first tried to hook the 'groupbranchiter' function in the 'sort' revset but this was useless because graphlog enforces revision number sorting :( As the goal is to advance on the topological iteration logic, I see this experimental option as a good way to move forward. We have to use turn the iterator into a list because the graphlog is apparently not ready for pure iterator input yet.

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  $ hg init

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  $ $PYTHON -c 'file("a", "wb").write("confuse str.splitlines\nembedded\rnewline\n")'

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  $ hg ci -Ama -d '1 0'

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  adding a

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  $ echo clean diff >> a

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  $ hg ci -mb -d '2 0'

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  $ hg diff -r0 -r1

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  diff -r 107ba6f817b5 -r 310ce7989cdc a

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  --- a/a	Thu Jan 01 00:00:01 1970 +0000

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  +++ b/a	Thu Jan 01 00:00:02 1970 +0000

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  @@ -1,2 +1,3 @@

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   confuse str.splitlines

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   embedded\r (no-eol) (esc)

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  newline

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  +clean diff

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