finer control of node placement

[DrVanScott]

I wonder if there is a possibility to have more control in the placement of commit nodes. For an example please have a look at one of your images:

The two graphs in the bottom line are ment to clarify the difference between merge dev->master and merge master->dev. While the graphs are correct, the bottom-right graph would be more intuitive, if commit F' would be aligned right to E (and not to D).

Well, even if you don't agree with my opinion: Is it possible to generate the graph like this?

A <- B <- D             <- master
  \         \
     C <- E <- F'       <- dev

[jubobs]

I can understand why this would be more pleasing and less confusing. You can achieve the desired placement by inserting the node corresponding to the merge commit in the second group, rather than in the first one, like so:

\documentclass{article}

\usepackage{gitdags}

\begin{document}

  % Original placement
  \begin{tikzpicture}
    \gitDAG[grow right sep = 2em]{
      A -- {
        B -- D -- F',
        C -- E -- F'
      }
    };
    \gitbranch
      {master}
      {above=of D}
      {D}
    \gitbranch
      {dev}
      {below=of F'}
      {F'}
    \gitHEAD
      {below=of dev}
      {dev}
  \end{tikzpicture}

\vspace{1em}

  % Improved placement
  \begin{tikzpicture}
    \gitDAG[grow right sep = 2em]{
      A -- {
        B -- D,
        C -- E -- F' % <--- insert F' in the second group of nodes
      },
      D -- F' %<--- then connect D to F'
    };
    \gitbranch
      {master}
      {above=of D}
      {D}
    \gitbranch
      {dev}
      {below=of F'}
      {F'}
    \gitHEAD
      {below=of dev}
      {dev}
  \end{tikzpicture}

\end{document}

[DrVanScott]

Thanks a lot. Do you have an idea how to render

    E - F
  /
A - B - C

EDIT:

i managed to render the following graph:

X   E - F
  /
A - B - C

So, making X invisible could be one solution. But how to do?