Tikzcd conflict with babel and cd

Question

I have this problem: when I try to compile a diagram I get the following message:

I think the culprit is a tikzcd arrow in ell 1-1

But I have not problem when, in the tikzlibrary, I just use cd, matrix and backgrounds. The problem is when using babel and cd at the same time.

\documentclass{article}
\usepackage{amsfonts,amssymb,amsmath,tikz}
\usepackage[spanish]{babel}
\usepackage[latin1]{inputenc}
\usepackage[mathcal]{euscript}

\usetikzlibrary{babel,cd,matrix,backgrounds}

\begin{document}
\begin{center}
  \begin{tikzcd}
    X\rar[mapsto]{T}&Y
  \end{tikzcd}
\end{center}

\end{document}

Answer 1

I would consider that a bug. Please report this to the maintainers of tikz-cd and the babel library.

In the meanwhile, this hack works for you:

% arara: pdflatex

\documentclass{article}
\usepackage{tikz-cd}
\usepackage[spanish]{babel}
\usetikzlibrary{babel}

\begin{document}
    \[
    \shorthandoff{"}
        \begin{tikzcd}
            X\arrow[mapsto, "T"]{r} & Y % you have to take the old "label" syntax here 
        \end{tikzcd}
    \]  
\end{document}

---

If you do a bug report, you can use the following MWE:

\documentclass{article}
\usepackage{tikz-cd}
\usetikzlibrary{babel}

\begin{document}
        \begin{tikzcd}\null\arrow{r}{}&\null\end{tikzcd}
\end{document}