Tex Gyre Bonum font

Question

I'm writing a document using Tex Gyre Bonum as roman font and Tex Gyre Bonum Math as math font. But these fonts have different commas. So, commas in equation environments are not equal to commas in regular text. How can I make commas in math mode equal to commas in regular text?

\documentclass[12pt,a4paper,titlepage]{report}

\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage[italian]{babel}
\usepackage{amsmath,amssymb,cancel,esint,mathtools,stackrel,stmaryrd,undertilde,amsfonts,siunitx}
\usepackage{fontspec}
\usepackage{unicode-math}
\setromanfont{TeX Gyre Bonum}
\setmathfont[math-style=ISO,bold-style=ISO]{TeX Gyre Bonum Math}

\begin{document}

Lorem, ipsum, dolor, sit, amet, consectetur, adipiscing, elit. Fusce, vel, pellentesque, tellus. 
$$E=mc^2,$$
Nunc, ut, pharetra, mauris, quis, maximus, risus. Fusce, eu, laoreet, justo. 
$$,,,$$

This is comma in regular text: ,

This is comma in math mode: $,$

\end{document}

Answer 1

Two possible workarounds:

1. load the dcolumn package
2. use polyglossia instead of babel

For various reasons, babel-italian started to mess with commas in order to emulate the behavior of icomma. There is apparently no way to disable this without loading dcolumn, that avoids the mess to even start.

Also issuing \AtBeginDocument{\NoIntelligentComma} doesn't solve the problem, because this restores the mathcode of the comma to the value it has in legacy LaTeX and is not good for unicode-math.

\documentclass{article}
\usepackage[italian]{babel}
\usepackage{amsmath,dcolumn}
\usepackage{fontspec}
\usepackage{unicode-math}
\setmainfont{TeX Gyre Bonum}
\setmathfont[math-style=ISO,bold-style=ISO]{TeX Gyre Bonum Math}

\begin{document}

Lorem, ipsum, dolor, sit, amet, consectetur, 
adipiscing, elit. Fusce, vel, pellentesque, tellus. 
\[E=mc^2,\]
Nunc, ut, pharetra, mauris, quis, maximus, risus. Fusce, eu, laoreet, justo. 
\[,\text{,},\]

This is comma in regular text: ,

This is comma in math mode: $,$

\end{document}