pgfgantt how do you connect start-start at the same time with three segment?

Question

In pgfgantt, connecting multiple simultaneously-starting bars by start-to-start produces a vertical arrow. Does pgfgantt support a three-segment arrow, i.e. left, down, right? (finish-to-start seems to go five-segment in other tools, too).

Answer 1

Just scrolling a bit in the manual, doesn't look like it's supported out of the box (unless I missed something). But you can define any type of link yourself with \newganttlinktype. Example below, more info in section 2.9 Links of the pgfgantt manual.

\documentclass{article}
\usepackage{pgfgantt}
\newganttlinktype{S-S}{
  \ganttsetstartanchor{west}
  \ganttsetendanchor{west}
  \draw [/pgfgantt/link] (\xLeft,\yUpper) -- ++(-\ganttvalueof{link bulge},0) |- (\xRight, \yLower);
}
\begin{document}
\begin{ganttchart}{1}{12}
  \gantttitle{2011}{12} \\
  \gantttitlelist{1,...,12}{1} \\
  \ganttbar{Task 1}{3}{6} \\
  \ganttbar{Task 2}{3}{7} \\
  \ganttbar{Task 1b}{5}{6} \\
  \ganttbar{Task 2b}{6}{7} \\
  \ganttlink[link type=S-S]{elem0}{elem1}
  \ganttlink[link type=S-S, link bulge=1cm, link/.append style={red, dashed}]{elem2}{elem3}
\end{ganttchart}
\end{document}