Using gb4e with amsbook class

Question

I am required to use amsbook for a project, but I find that it messed up the alignment of interlinear glosses with the gb4e package. Here's my code:

\documentclass{amsbook}
\usepackage{gb4e} 

\begin{document}
\begin{exe}
    \ex 
    \gll nya te ma\\
    small one PL\\
    \glt `little ones'\\
\end{exe}
\end{document}

The output looks like this:

The third line should be left-aligned with the first two lines. How can I fix this without ruining indentation in other places in the document?

Answer 1

The amsbook class wants to keep the value of \parindent inside lists, so it sets \listparindent to \normalparindent. Set this one to zero inside exe, because exe expects \listparindent to be zero.

\documentclass{amsbook}
\usepackage{gb4e}

\AddToHook{env/exe/begin}{\setlength{\normalparindent}{0pt}}

\begin{document}

\begin{exe}
    \ex
    \gll nya te ma\\
    small one PL\\
    \glt `little ones'
\end{exe}

\end{document}

You don't want \\ at the end.