擺脫預設的 where 規範

Question

我指定了一個where聲明，以便在基礎層級對齊樹中的所有單字。我的書中可能包含一棵不符合此預設值的樹。如何擺脫預設設置，以便說明符和附加符不會被推到基線？

\documentclass{minimal}

\usepackage{forest}

\forestset{
sn edges/.style={for tree={parent anchor=south, child anchor=north,align=center,base=bottom,where n children=0{tier=word}{}}}, 
background tree/.style={for tree={text opacity=0.2,draw opacity=0.2,edge={draw opacity=0.2}}}
}


\begin{document}

\begin{forest}
sn edges
[XP
  [Specifier]
  [X'
    [Adjunct]
    [X'
      [Complement] [X] ] ] ]
\end{forest}

\end{document}

Answer 1

您可以在本地將其設為tier空：

\documentclass{article}

\usepackage{forest}

\forestset{
sn edges/.style={for tree={parent anchor=south, child anchor=north,align=center,base=bottom,where n children=0{tier=word}{}}}, 
background tree/.style={for tree={text opacity=0.2,draw opacity=0.2,edge={draw opacity=0.2}}}
}

\begin{document}

\begin{forest}
sn edges,
where n children=0{tier=}{}
[X
  [Specifier]
  [X'
    [Adjunct]
    [X'
      [Complement] [X] ] ] ]
\end{forest}

\end{document}