evolve: use cmdrewrite.amend() instead of creating a new commit This patch backs out changeset 88601e1cd5d8. We replaced cmdrewrite.amend() with creating new commit because using amend(), a high level function was not good and creating a new commit gave us more control over things. **HOWEVER** to get more control, you need to get arrange all the pieces together perfectly. Creating a new commit, the existing logic has some bugs around dirstate handling, the `repo.dirstate.setparents()` call especially. Sometimes this fixes the dirstate correctly sometimes not. As Pierre-Yves David said, "Having a "clumsy" implementation with the right behavior is usually a good first step. So having an amend based implementation seems like a good first step.", let's take a step back and get back using amend so that we can have a correct basic implementation which is bug free.

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Doc is generated with sphinx.

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You can generate the doc with:

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```

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make

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```

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# Tutorials

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For updating the tutorials, you need to have the docgraph extension installed

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(https://pypi.python.org/pypi/hg-docgraph).

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Then run the test-topic-tutorial.t and test-tutorial.t to update the output if

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needed.

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You'll need the dot binary (likely installed by the graphviz package in your

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package manager) in order to have graphviz graphs rendered in the html output.

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Simply run make in the docs directory should takes care of the conversion of

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the tutorial .t files into .rst files. Then sphinx should do the rest of the

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jobs by rendering graphviz graphs.