# Two problems with bidi polyglossia footnotes

This MWE shows two problems I am encountering with footnotes when using polyglossia (mainlanguage Arabic, otherlanguage English).

Notice how the punctuation in the footnote reverses position next to the numbers; and notice also the font size is based on the Arabic font sizes, not the English font environment within which the footnotes occur. The first problem (punctuation) I think must be a bug. The second might be deliberate, but I don't know.

The output is like this.

\documentclass{article}
\usepackage{polyglossia}

\setmainlanguage[numerals=maghrib]{arabic}
\setotherlanguage{english}
\newfontfamily\arabicfont[Script=Arabic, Scale = 3]{Times New Roman}
\newfontfamily\englishfont[Script=Latin]{Times New Roman}
\begin{document}
\begin{english}
This is  a   sentence with a footnote. \LTRfootnote{\textenglish{English 1; 2, 3:
This has the correct font size and the correct punctuation}}

This is  a  second sentence with a footnote. \LTRfootnote{English 1; 2, 3:
The punctuation has been mixed and the font size is based on the scaled-up Arabic  3 size}

\end{english}
\end{document}


This issue can be illustrated with the following minimal example:

\documentclass{article}
\usepackage{fontspec}
\newfontfamily\arabicfont[Script=Arabic]{Times New Roman}
\newfontfamily\englishfont[Script=Latin]{Times New Roman}
\begin{document}
\englishfont
English 1; 2, 3:
The punctuation has been mixed and the font size is based on the scaled-up Arabic  3 size

\bigskip
\arabicfont
English 1; 2, 3:
The punctuation has been mixed and the font size is based on the scaled-up Arabic  3 size
\end{document}


When the font contains Script=Arabic, the XeTeX engine will perform some unicode bidi. At the engine level, it is not a bug but a feature.

The bidi package only provides the \LTRfootnote command and does not set any font so it is polyglossia bug that fails to set proper font for \LTRfootnote. I do not know how font set-up works in poly... but you can do this:

\documentclass{article}
\usepackage{polyglossia}

\setmainlanguage[numerals=maghrib]{arabic}
\setotherlanguage{english}
\newfontfamily\arabicfont[Script=Arabic, Scale = 3]{Times New Roman}
\newfontfamily\englishfont[Script=Latin]{Times New Roman}

\makeatletter
\renewcommand\@makefntext[1]{%
\parindent 1em%
\noindent
\hb@xt@1.8em{\hss\@makefnmark}\englishfont#1}
\makeatother
\begin{document}
\begin{english}
This is  a   sentence with a footnote. \LTRfootnote{\textenglish{English 1; 2, 3:
This has the correct font size and the correct punctuation}}

This is  a  second sentence with a footnote. \LTRfootnote{English 1; 2, 3:
The punctuation has been mixed and the font size is based on the scaled-up Arabic  3 size}

\end{english}
\end{document}


Be aware that this is not a perfect solution.