Biber: abreviações com macros \textbf{} são classificadas de maneira diferente

Question

Se eu alterar uma abreviação no .bibarquivo de XYZpara \textbf{X}YZa ordem na bibliografia muda.

Como posso ter taquigrafias onde algumas taquigrafias começam com a \textbf(para colocar certas letras em negrito) sem distorcer a ordem de classificação?

---

MWE

\documentclass{article}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}

\usepackage[backend=biber,
        style=alphabetic,
        natbib=true,
        sorting=ynt,
        ]{biblatex}

\usepackage{filecontents}

\begin{filecontents}{\jobname.bib}
@article{xei2016asdf,
Author = {Xei, A and A, B and B, C and C, D},
Title = {asdf is asdf},
Year = {2016},
}
@article{xei2017bob,
Author = {Xei, A and A, B and B, C and C, D},
Title = {bob is bob},
Year = {2017},
}
@article{xei2017bob2,
Author = {Xei, A and A, B and B, C and C, D},
Title = {bob is bob 2},
Year = {2017},
shorthand = {\textbf{X}ei+17},
sortshorthand = {Xei+17},
}
@article{xei2017alice,
Author = {Xei, A and A, B and B, C},
Title = {alice is alice},
Year = {2017},
}
@article{xei2018alice2,
Author = {Xei, A and A, B and B, C},
Title = {alice is alice 2},
Year = {2018},
shorthand = {\textbf{X}AB18},
sortshorthand = {XAB18},
}
\end{filecontents}

\addbibresource{\jobname.bib}

\begin{document}

\newrefcontext[sorting=anyvt]
\cite{xei2016asdf,xei2017bob,xei2017bob2,xei2017alice,xei2018alice2}

\printbibliography
\end{document}

Resultados na bibliografia:

Mas eu ainda gostaria da seguinte classificação:

---

Há uma curiosidade sobre a solução proposta. Se considerarmos:

\documentclass{article}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}

\usepackage[backend=biber,
        style=alphabetic,
        ]{biblatex}

\DeclareSortingScheme{anyt}{
  \sort{
    \field{presort}
  }
  \sort{
    \field{sortshorthand}
    \field{labelalpha}
  }
  \sort[final]{
    \field{sortkey}
  }
  \sort{
    \field{sortname}
    \field{author}
    \field{editor}
    \field{translator}
    \field{sorttitle}
    \field{title}
  }
  \sort{
    \field{sortyear}
    \field{year}
  }
  \sort{
    \field{sorttitle}
    \field{title}
  }
  \sort{
    \field{volume}
    \literal{0}
  }
}

\DeclareSortingScheme{anyvt}{
  \sort{
    \field{presort}
  }
  \sort{
    \field{sortshorthand}
    \field{labelalpha}
  }
  \sort[final]{
    \field{sortkey}
  }
  \sort{
    \field{sortname}
    \field{author}
    \field{editor}
    \field{translator}
    \field{sorttitle}
    \field{title}
  }
  \sort{
    \field{sortyear}
    \field{year}
  }
  \sort{
    \field{volume}
    \literal{0}
  }
  \sort{
    \field{sorttitle}
    \field{title}
  }
}

\usepackage{filecontents}

\begin{filecontents}{\jobname.bib}
@article{xei2016asdf,
Author = {Xei, A and A, B and B, C and C, D},
Title = {asdf is asdf},
Year = {2016},
}
@article{xei2018bob,
Author = {Xei, A and A, B and B, C and C, D},
Title = {bob is bob},
Year = {2018},
}
@article{xei2017bob2,
Author = {Xei, A and A, B and B, C and C, D},
Title = {bbob is bob 2},
Year = {2017},
shorthand = {\textbf{X}ei+17},
sortshorthand = {Xei+17},
}
@article{xei2017alice,
Author = {Xei, A and A, B and B, C},
Title = {alice is alice},
Year = {2017},
}
@article{xei2018alice2,
Author = {Xei, A and A, B and B, C},
Title = {alice is alice 2},
Year = {2018},
shorthand = {\textbf{X}AB18},
sortshorthand = {XAB18},
}
\end{filecontents}

\addbibresource{\jobname.bib}

\begin{document}
\cite{xei2016asdf,xei2018bob,xei2017bob2,xei2017alice,xei2018alice2}

\printbibliography
\end{document}

Nós temos

versus a ordem sem abreviações

Answer 1

biblatexconhece o campo sortshorthand. Obiblatexdocumentaçãoexplica (§2.2.3Campos Especiais, pág. 30):

[ sortshorthand] Semelhante, sortkeymas usado na lista de abreviações. Se presente, biblatexusa este campo em vez de shorthandao classificar a lista de abreviações. Isso é útil se o campo abreviado contiver abreviações com comandos de formatação como \emphou \textbf.

Para os alphabeticesquemas de classificação anytand anyvt biblatexnão usa sortshorthand(pois isso significaria basicamente manter o controle de a labelalphae a sortlabelalphaque seriam construídos de acordo com as mesmas regras, mas dá precedência aos sort...campos).

Com as configurações padrão (definidas labelalphacomo shorthandse esta existir), basta adicionar \field{sortshorthand}antes \field{labelalpha}nos esquemas de classificação.

O MWE redefine ambos os esquemas de classificação, mas se você usar apenas um dos dois, poderá descartar o outro.

\documentclass{article}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}

\usepackage[backend=biber,
        style=alphabetic,
        ]{biblatex}

\DeclareSortingTemplate{anyt}{
  \sort{
    \field{presort}
  }
  \sort{
    \field{sortshorthand}
    \field{labelalpha}
  }
  \sort[final]{
    \field{sortkey}
  }
  \sort{
    \field{sortname}
    \field{author}
    \field{editor}
    \field{translator}
    \field{sorttitle}
    \field{title}
  }
  \sort{
    \field{sortyear}
    \field{year}
  }
  \sort{
    \field{sorttitle}
    \field{title}
  }
  \sort{
    \field{volume}
    \literal{0}
  }
}

\DeclareSortingTemplate{anyvt}{
  \sort{
    \field{presort}
  }
  \sort{
    \field{sortshorthand}
    \field{labelalpha}
  }
  \sort[final]{
    \field{sortkey}
  }
  \sort{
    \field{sortname}
    \field{author}
    \field{editor}
    \field{translator}
    \field{sorttitle}
    \field{title}
  }
  \sort{
    \field{sortyear}
    \field{year}
  }
  \sort{
    \field{volume}
    \literal{0}
  }
  \sort{
    \field{sorttitle}
    \field{title}
  }
}

\usepackage{filecontents}

\begin{filecontents}{\jobname.bib}
@article{xei2016asdf,
Author = {Xei, A and A, B and B, C and C, D},
Title = {asdf is asdf},
Year = {2016},
}
@article{xei2017bob,
Author = {Xei, A and A, B and B, C and C, D},
Title = {bob is bob},
Year = {2017},
}
@article{xei2017bob2,
Author = {Xei, A and A, B and B, C and C, D},
Title = {bob is bob 2},
Year = {2017},
shorthand = {\textbf{X}ei+17},
sortshorthand = {Xei+17},
}
@article{xei2017alice,
Author = {Xei, A and A, B and B, C},
Title = {alice is alice},
Year = {2017},
}
@article{xei2018alice2,
Author = {Xei, A and A, B and B, C},
Title = {alice is alice 2},
Year = {2018},
shorthand = {\textbf{X}AB18},
sortshorthand = {XAB18},
}
\end{filecontents}

\addbibresource{\jobname.bib}

\begin{document}
\cite{xei2016asdf,xei2017bob,xei2017bob2,xei2017alice,xei2018alice2}

\printbibliography
\end{document}