How to use diagxy on sharelatex or overleaf?

Question

In Miktex, to use diagxy package, there a guide that you copy the code in file "diagxy.tex" then paste it in new file with name "diagxt.sty", and put it in same folder with working tex file, and use

\usepackage[all]{xy}
\usepackage{diagxy}

But I use sharelatex or overleaf. How use diagxy in sharelatex or overleaf? Follows is my try in sharelatex. I put file "diagxy.sty" in same folder with working file of my project on sharelatex, and use following code:

\documentclass{article} 
\usepackage[english]{babel}
\usepackage[utf8]{inputenc}
\usepackage{amsmath,amsthm} 

\usepackage[all]{xy}
\usepackage{diagxy}

\begin{document}

$$\bfig
\square[A‘B‘C‘D;e‘f‘g‘m]
\efig$$

\end{document}

then having error: "LaTeX Error: File 'diagxy.sty' not found".

The code

$$\bfig
\square[A‘B‘C‘D;e‘f‘g‘m]
\efig$$

is taken from mirrors.ctan.org/macros/generic/diagrams/diagxy/diaxydoc.pdf.

Answer 1

\documentclass{article} 
\usepackage[english]{babel}
\usepackage[utf8]{inputenc}
\usepackage{amsmath,amsthm} 

\usepackage[all]{xy}
\input{diagxy}

\begin{document}

$$\bfig
\square[A`B`C`D;e`f`g`m]
\efig$$

\end{document}

This code work on sharelatex.

Use \input{diagxy}.
This not work [A‘B‘C‘D;e‘f‘g‘m], this work [A`B`C`D;e`f`g`m] use AltGr+7.