Pre- and post-notes at citations with supercite (biblatex)

Question

I'm using \supercite with biblatex for a numeric superscripted citation style. Prenotes and postnotes are, as per the manual, discarded. Is there any simple way to add them back in?

\documentclass{article}
\usepackage{biblatex}
\begin{filecontents}{test.bib}
@book{A01,
  author = {Author, A.},
  year = {2001},
  title = {Alpha},
}
@book{B02,
  author = {Buthor, B.},
  year = {2002},
  title = {Bravo},
}
\end{filecontents}
\addbibresource{test.bib}
\begin{document}
Text\supercite[prenote][postnote]{A01,B02}
\end{document}

Answer 1

Just take the definition of \supercite from your .cbx file and add the calls to the relevant bibmacros back in.

For numeric (which is used if no explicit style is given) we need

\documentclass{article}
\usepackage{biblatex}

\DeclareCiteCommand{\supercite}[\mkbibsuperscript]
  {\usebibmacro{prenote}}
  {\usebibmacro{citeindex}%
   \usebibmacro{cite}}
  {\supercitedelim}
  {\usebibmacro{postnote}}

\addbibresource{biblatex-examples.bib}

\begin{document}
Text\supercite[prenote][postnote]{sigfridsson,worman}
\end{document}

As shown in the output the risk is that the notes could visually overwhelm the small citation numbers, on the other hand there is a risk that at small font sizes the notes would be hard to read.

---

For numeric-comp as requested in the comments you would need

\DeclareCiteCommand{\supercite}[\mkbibsuperscript]
  {\usebibmacro{cite:init}%
   \let\multicitedelim=\supercitedelim
   \usebibmacro{prenote}}
  {\usebibmacro{citeindex}%
   \usebibmacro{cite:comp}}
  {}
  {\usebibmacro{cite:dump}%
   \usebibmacro{postnote}}