I'm new to forest. Is there a style (or a modification of what's below) which produces the alignment of empty terminal nodes F3 and F4 in Tree A just like in Tree B?
\documentclass{standalone}
\usepackage{forest}
%\forestset{nice nodes/.style={for tree={inner sep=0pt,s sep=.2in,align=center, anchor=north}},default preamble=nice nodes, }
\useforestlibrary{linguistics}
\forestapplylibrarydefaults{linguistics}
\begin{document}
Tree A:
\begin{forest}
[
[DP, name=target[a labelled\\ subtree, roof]]
[F$_4$P[F$_4$]
[F$_3$P[F$_3$]
[F$_2$P[F$_2$][\hspace{10pt}F$_1$P $\Rightarrow$ something,
name=t[is there a way\\to move this label\\to the right?, roof]]]]]]]
\end{forest}
Tree B:
\begin{forest}
[
[DP, name=target[a labelled\\ subtree, roof]]
[F$_4$P[F$_4$[$\emptyset$]]
[F$_3$P[F$_3$[]]
[F$_2$P[F$_2$][\hspace{10pt}F$_1$P $\Rightarrow$ something,
name=t[I miss qtree, roof]]]]]]]
\end{forest}
\end{document}
A separate issue is the problem of moving a node label (F4P in the trees) to the right, so that it is not centered wrt to the node. Here is what I get:
PS. The skeleton I'm using tolerates qtree and tikz-qtree but does not want to tolerate arrows in neither qtree nor tikz-qtree in XeLaTeX, so I'll need to stick to forest, I guess. That's why I'm trying to have a nice proportional tree in forest rather than using simply qtree.
label
s, though yours do not :-).