How to automate biber --output_safechars with arara?

Question

I'm using arara since my last question about ï & î font encoding, & before, I used the DG' 1.1 answer:

1.1 Call biber with --output_safechars.

To force biber to pass {\"\i} along unchanged, and thus getting the correct output, simply use the option --output_safechars: xelatex document biber --output_safechars document xelatex document xelatex document

When I write, I often excerpt from my bibliographic software a new file .bib. Do you think is it possible to integrate in arara the output_safechars like that:

% arara: xelatex
% arara: biber: {output_safechars: yes}% of course, it doesn't work
% arara: xelatex: {shell: yes}
% arara: xelatex: {shell: yes}

or in the BibTex motor line in my TexShop settings? biber --output_safechars

% arara: xelatex
% arara: biber
% arara: xelatex: {shell: yes}
% arara: xelatex: {shell: yes}% it does not work either

Thanks for your ideas.

Answer 1

% arara: biber: { options: "--output_safechars" }

For example, using the code from your earlier question

\begin{filecontents*}{\jobname.bib}
@book{GoncalvesdaCosta:2000tw,
author = {Goncalves Da Costa, H{\'e}lo{\"\i}sa},
title = {{Les mus{\'e}es d'histoire de ville leur contribution au d{\'e}veloppement social contemporain.}},
publisher = {Universit{\'e} du Qu{\'e}bec {\`a} Montr{\'e}al},
year = {2000},
address = {Montr{\'e}al}}
\end{filecontents*}

% !TEX encoding = UTF-8 Unicode
% arara: biber: { options: "--output_safechars" }
\documentclass[12pt]{scrbook}

\usepackage[english,frenchb]{babel}
\usepackage[quiet]{fontspec}

\usepackage[automark]{scrpage2}
\usepackage[babel,french=guillemets*]{csquotes}
\usepackage[backend=biber,style=authortitle-ticomp,doi=false]{biblatex}

\frenchbsetup{FrenchFootnotes=false}
\MakeOuterQuote{"}

% \setmainfont[Mapping=tex-text, Ligatures={Common, Rare}, Numbers={OldStyle}]{Adobe Garamond Pro}

\addtokomafont{disposition}{\normalfont}
\addtokomafont{pageheadfoot}{\normalfont}
\addtokomafont{pagenumber}{\normalfont}
\addtokomafont{footnote}{\normalfont}
\addtokomafont{footnotereference}{\normalfont}

\addbibresource{\jobname.bib}
\AtBeginBibliography{\def\UrlFont{\scriptsize}}

\begin{document}
"Héloïse"\footcite{GoncalvesdaCosta:2000tw}.
\printbibliography
\end{document}

produces the following bibliography

[I compiled with xelatex -> arara -> xelatex just to isolate the relevant arara line for simplicity.]