\ex 与 parbox 导致示例数字进入边距

Question

下面两个示例的唯一区别在于第一个示例使用\ex(显示示例编号)，而第二个示例使用\exdisplay(无示例编号)。 除此以外，它们完全相同。

两者都设置在parbox环境中。正如您在 中看到的那样\ex，示例编号位于页边距中，并且“文本”和行间注释之间出现间隙，就好像整个行间注释被推到了右侧。为什么会发生这种情况？

我希望将整个行间 + 示例编号推到左侧，以便所有内容都与示例一样具有边距\exdisplay。乱七八糟地处理textoffset并numoffset没有产生预期的效果。

%XeLaTeX
\documentclass[11pt]{scrartcl}
\usepackage[showframe]{geometry} 
\usepackage{polyglossia}
    \setdefaultlanguage{english}
    \setotherlanguage{hebrew}
    \newfontfamily\hebrewfont[Script=Hebrew]{Arial}
    \newfontfamily\englishfont[Ligatures=NoCommon]{Linux Libertine O}

\usepackage{expex}
    \lingset{glhangstyle=none}

\begin{document}

\section{Foo Bar}
This one has \verb=\ex=.

\noindent\makebox[\textwidth]{\parbox[t]{.29\textwidth}{
\exdisplay\noexno\strut\textenglish
text text text text text text text text text text text text text text text text .
\xe}\hfill
\parbox[t]{.69\textwidth}{\begin{hebrew}\ex\begingl
\gla אאאאא בבבבב גגגגג דדדדד ההההה ווווו זזזזז טטטטט //
\glb words words words word words words words words //
\glc words words words words words words words words //
\endgl\xe\end{hebrew}}}%

\noindent This one has \verb=\exdisplay=.

\noindent\makebox[\textwidth]{\parbox[t]{.29\textwidth}{
\exdisplay\noexno\strut\textenglish
text text text text text text text text text text text text text text text text .
\xe}\hfill
\parbox[t]{.69\textwidth}{\begin{hebrew}\exdisplay\begingl
\gla אאאאא בבבבב גגגגג דדדדד ההההה ווווו זזזזז טטטטט //
\glb words words words word words words words words //
\glc words words words words words words words words //
\endgl\xe\end{hebrew}}}%

\end{document}

Answer 1

我发现这个答案最有帮助。但它并不完美，因为行间行移到第二行太快，留下了一个很大的间隙，而这个间隙本应该几乎没有间隙（在我的 MWE 中）。但就这个问题而言，它已经足够接近了。

此外，我已通过电子邮件向expex 創作者要求他修复这个 RTL\ex问题，使用这个 MWE 作为一个很好的起点。希望他有一个更完整的解决方案。

%XeLaTeX
\documentclass[11pt]{scrartcl}

\usepackage[showframe]{geometry} 

\usepackage{polyglossia}
    \setdefaultlanguage{english}
    \setotherlanguage{hebrew}
    \newfontfamily\hebrewfont[Script=Hebrew]{Arial}
    \newfontfamily\englishfont[Ligatures=NoCommon]{Linux Libertine O}

\usepackage{expex}
    \lingset{glhangstyle=none}

\makeatletter
\def\ex@c{%
   \ex@setup
   \leavevmode
   \setbox\numbox=\hbox{\hskip\lingnumoffset\ep@actualexnoprint}%
   \epd@numright=\wd\numbox
   \ifcase\ep@textanchor                          % numleft
         \ep@settosum\leftskip\lingnumoffset\lingtextoffset
      \or                                         % normal
         \ep@settosum\leftskip\epd@numright\lingtextoffset
      \fi
   % begin changes
   % \llap{\hbox to\leftskip{\unhbox\numbox \hss}}%
   \if@RTL
     \hbox to\leftskip{\unhbox\numbox \hss}%
   \else
     \llap{\hbox to\leftskip{\unhbox\numbox \hss}}%
   \fi
   % end changes
   \lingeveryex
   \latex@tagex
   \ignorespaces
}

\def\glw@begingl@a{%
   \bgroup
   \parindent0pt
   \ep@setglstrut
   \ifdim\ling@glwidth=0pt
      \ifling@glossbreaking
         \bgroup
       \else
         \vtop\bgroup
           % begin changes
           % \advance\hsize by -\leftskip
           \if@RTL
              \advance\hsize by -2\leftskip
           \else
              \advance\hsize by -\leftskip
           \fi
           % end changes
            \advance\hsize by -\rightskip
            \leftskip=0pt
       \fi
   \else
      \vtop\bgroup
         \hsize=\ling@glwidth
         \leftskip=0pt
   \fi
   \bgroup
   \parindent=0pt
   \@glpreamblefalse
   \@glftfalse
   \let\mainlist=\empty
   \let\itemtypelist=\empty
   \let\aboveskiplist=\empty
   \let\strutlist=\empty
   \let\everylist=\empty
}
\makeatother

\begin{document}

\section{Foo Bar}
This one has \verb=\ex=.

\noindent\makebox[\textwidth]{\parbox[t]{.29\textwidth}{
\exdisplay\noexno\strut\textenglish
text text text text text text text text text text text text text text text text .
\xe}\hfill
\parbox[t]{.69\textwidth}{\begin{hebrew}\ex\begingl
\gla אאאאא בבבבב גגגגג דדדדד ההההה ווווו זזזזז ט //
\glb words words words word words words words w //
\glc words words words words words words words w //
\endgl\xe\end{hebrew}}}%

\noindent This one has \verb=\exdisplay=.

\noindent\makebox[\textwidth]{\parbox[t]{.29\textwidth}{
\exdisplay\noexno\strut\textenglish
text text text text text text text text text text text text text text text text .
\xe}\hfill
\parbox[t]{.69\textwidth}{\begin{hebrew}\exdisplay\noexno\begingl
\gla אאאאא בבבבב גגגגג דדדדד ההההה ווווו זזזזז טטטטט //
\glb words words words word words words words words //
\glc words words words words words words words words //
\endgl\xe\end{hebrew}}}%

\end{document}