Strange backout behaviour

I cannot reproduce the same results as provided at https://www.mercurial-scm.org/wiki/Backout

After I performed h开发者_开发百科g backout -r 1 as said there - no new changeset appears and I just have a file modified in tip.

Why is that?

ps: I'm using hg 1.9

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This was changed in Mercurial 1.7. See https://www.mercurial-scm.org/wiki/WhatsNew. Apparently, you can now use --merge to get the previous behavior.