Specification: add eprint* fields and update the documentation

biblatex/manual.bib

+@software{2013ascl.soft05002P,
+  author = {{Pontzen}, A. and {Ro{\v s}kar}, R. and {Stinson}, G. and {Woods}, R.},
+  title = "{pynbody: N-Body/SPH analysis for python}",
+  editor = {{Astrophysics Source Code Library}},
+  year = 2013,
+  month = may,
+  eprint = {1305.002},
+  eprinttype = "ascl",
+  url = {http://adsabs.harvard.edu/abs/2013ascl.soft05002P},
+  note = {Provided by the SAO/NASA Astrophysics Data System}
+}
 
 @manual {scilabdoc,
   title = {The offical Scilab documentation},
@@ -77,3 +88,4 @@
   urllocal  = "http://www.dicosmo.org/Articles/2020-CiSE-swhid.pdf",
   Journal	= {Computing in Science and Engineering}
 }
+

biblatex/sample-use-sty.tex

@@ -76,6 +76,7 @@ extended with the \texttt{software} module.
 \item softwaremodule entry Voronoi: from the chain of crossrefs \cite{cgal:lp-gi-20a}, and the from the condensed bibtem \cite{cgal:lp-gi-20a-condensed} (they should be identical)
 \item software entry Parmap \cite{parmap}
 \item codefragment entry simplemapper \cite{simplemapper}
+\item software entry from the Astrophysics Source Code Library, using the eprint field \cite{2013ascl.soft05002P}
 \item documentation in a software entry \cite{scilabdoc}
 \end{itemize}
 

biblatex/software-biblatex.tex

@@ -199,6 +199,33 @@ of the source code of the software described in the entry. The default is |true|
 \noindent This option controls the inclusion of the url of the code hosting
 platform where the software described in the enttry is developed. The default is |true|.
 
+\subsection{Adding support for additional software identifiers}
+
+It would not be reasonable to have a dedicated field for each of the many software releated identifiers that exist.
+If you want to create bibliographic records that use identifiers not natively supported by this package, you
+can use the standard Bib\LaTeX\ mechanism that uses the ~eprint~, ~eprinttype~ and ~eprintclass~ fields.\\
+
+The default formatting of these fields may be what you want, but if it's not the case, you can define
+your own format, as explained in the official Bib\LaTeX\ documentation.\\
+
+As an example, this style already contains a specific formatting definition for the Astrophysics Source Code Library (ASCL) software records,
+via the following declaration in the ~software.bbx~ file:
+
+\begin{verbatim}
+\DeclareFieldFormat{eprint:ascl}{%
+  ascl\addcolon\space
+  \ifhyperref
+    {\href{https://ascl.net/#1}{%
+       \nolinkurl{#1}%
+       \iffieldundef{eprintclass}
+         {}
+         {\addspace\texttt{\mkbibbrackets{\thefield{eprintclass}}}}}}
+    {\nolinkurl{#1}%
+     \iffieldundef{eprintclass}
+       {}
+       {\addspace\texttt{\mkbibbrackets{\thefield{eprintclass}}}}}}
+\end{verbatim}
+
 \section{Details}
 
 The detailed information for this style is contained in the example document and

biblatex/swentries.tex

@@ -8,7 +8,7 @@ Computer software.
 
 \emph{Required fields:} \texttt{author} / \texttt{editor}, \texttt{title}, \texttt{url}, \texttt{year}
 
-\emph{Optional fields:} \texttt{abstract}, \texttt{date}, \texttt{doi}, \texttt{eid}, \texttt{file}, \texttt{hal\_id}, \texttt{hal\_version},
+\emph{Optional fields:} \texttt{abstract}, \texttt{date}, \texttt{doi}, \texttt{eprint}, \texttt{eprintclass}, \texttt{eprinttype}, \texttt{file}, \texttt{hal\_id}, \texttt{hal\_version},
 \texttt{institution}, \texttt{license}, \texttt{month}, \texttt{note}, \texttt{organization}, \texttt{publisher},
 \texttt{related}, \texttt{relatedtype}, \texttt{relatedstring}, \texttt{repository}, \texttt{swhid}, \texttt{urldate}, \texttt{version}
 
@@ -18,7 +18,7 @@ fields from the entry mentioned in the \texttt{crossref} field.
 
 \emph{Required fields:} \texttt{author} / \texttt{editor}, \texttt{title}, \texttt{url}, \texttt{version}, \texttt{year}
 
-\emph{Optional fields:} \texttt{abstract}, \texttt{crossref}, \texttt{date}, \texttt{doi}, \texttt{eid}, \texttt{file}, \texttt{hal\_id}, \texttt{hal\_version},
+\emph{Optional fields:} \texttt{abstract}, \texttt{crossref}, \texttt{date}, \texttt{doi}, \texttt{eprint}, \texttt{eprintclass}, \texttt{eprinttype}, \texttt{file}, \texttt{hal\_id}, \texttt{hal\_version},
 \texttt{institution}, \texttt{introducedin}, \texttt{license}, \texttt{month}, \texttt{note}, \texttt{organization}, \texttt{publisher},
 \texttt{related}, \texttt{relatedtype}, \texttt{relatedstring}, \texttt{repository}, \texttt{swhid}, \texttt{subtitle}, \texttt{urldate}
 
@@ -29,7 +29,7 @@ fields from the entry mentioned in the \texttt{crossref} field.
 
 \emph{Required fields:} \texttt{author}, \texttt{subtitle}, \texttt{url}, \texttt{year}
 
-\emph{Optional fields:} \texttt{abstract}, \texttt{crossref}, \texttt{date}, \texttt{doi}, \texttt{eid}, \texttt{editor}, \texttt{file}, \texttt{hal\_id}, \texttt{hal\_version},
+\emph{Optional fields:} \texttt{abstract}, \texttt{crossref}, \texttt{date}, \texttt{doi}, \texttt{eprint}, \texttt{eprintclass}, \texttt{eprinttype}, \texttt{editor}, \texttt{file}, \texttt{hal\_id}, \texttt{hal\_version},
 \texttt{institution}, \texttt{introducedin}, \texttt{license}, \texttt{month}, \texttt{note}, \texttt{organization}, \texttt{publisher},
 \texttt{related}, \texttt{relatedtype}, \texttt{relatedstring}, \texttt{repository}, \texttt{swhid}, \texttt{title}, \texttt{urldate}, \texttt{version}
 
@@ -40,7 +40,7 @@ Inherits values of missing fields from the entry mentioned in the \texttt{crossr
 
 \emph{Required fields:}  \texttt{url}
 
-\emph{Optional fields:} \texttt{author}, \texttt{abstract}, \texttt{crossref}, \texttt{date}, \texttt{doi}, \texttt{eid}, \texttt{file}, \texttt{hal\_id}, \texttt{hal\_version},
+\emph{Optional fields:} \texttt{author}, \texttt{abstract}, \texttt{crossref}, \texttt{date}, \texttt{doi}, \texttt{eprint}, \texttt{eprintclass}, \texttt{eprinttype}, \texttt{file}, \texttt{hal\_id}, \texttt{hal\_version},
 \texttt{institution}, \texttt{introducedin}, \texttt{license}, \texttt{month}, \texttt{note}, \texttt{organization}, \texttt{publisher},
 \texttt{related}, \texttt{relatedtype}, \texttt{relatedstring}, \texttt{repository}, \texttt{swhid}, \texttt{subtitle}, \texttt{title}, \texttt{urldate}, \texttt{version}, \texttt{year}
 
@@ -63,7 +63,9 @@ style. It is not used by all standard bibliography styles.
 \item[{editor}] list (name). The coordinator(s) of large modular software projects.
 \item[{file}] field (verbatim). A link to download a copy of the work.
 \item[{doi}] field (verbatim). The Digital Object Identifier of the work.
-\item[{eid}] field (verbatim). An electronic identifier of the work.
+\item[{eprint [biblatex only]}] field (verbatim). An electronic identifier of the work. This field can be used to accommodate electronic identifiers different from the ones that have a dedicate field in this style.
+\item[{eprinttype [biblatex only]}] field (verbatim). The type of eprint identifier, e. g., the name of the archive, repository, service, or system the eprint field refers to. Will be typeset by default as a prefix of the content of the eprint field.
+\item[{eprintclass [biblatex only]}] field (verbatim). Additional information related to the resource indicated by the eprinttype field. This could be a section of an archive, a path indicating a service, a classification of some sort.
 \item[{\texttt{hal\_id} [not in biblatex standard styles]}] field (verbatim). A digital identifier for the 
 software record including its description and metadata on HAL.
 \item[{\texttt{hal\_version} [not in biblatex standard styles]}] field (verbatim). The version of the HAL software record designated by \texttt{hal\_id}.

swentry.org

@@ -31,7 +31,7 @@ whishes to cite. They are listed below in order of granularity.
 
    /Required fields:/ ~author~ / ~editor~, ~title~, ~url~, ~year~
 
-   /Optional fields:/ ~abstract~, ~date~, ~doi~, ~eid~, ~file~, ~hal_id~, ~hal_version~,
+   /Optional fields:/ ~abstract~, ~date~, ~doi~, ~eprint~, ~eprintclass~, ~eprinttype~, ~file~, ~hal_id~, ~hal_version~,
    ~institution~, ~license~, ~month~, ~note~, ~organization~, ~publisher~,
    ~related~, ~relatedtype~, ~relatedstring~, ~repository~, ~swhid~, ~urldate~, ~version~
 
@@ -41,7 +41,7 @@ whishes to cite. They are listed below in order of granularity.
 
    /Required fields:/ ~author~ / ~editor~, ~title~, ~url~, ~version~, ~year~
 
-   /Optional fields:/ ~abstract~, ~crossref~, ~date~, ~doi~, ~eid~, ~file~, ~hal_id~, ~hal_version~,
+   /Optional fields:/ ~abstract~, ~crossref~, ~date~, ~doi~, ~eprint~, ~eprintclass~, ~eprinttype~, ~file~, ~hal_id~, ~hal_version~,
    ~institution~, ~introducedin~, ~license~, ~month~, ~note~, ~organization~, ~publisher~,
    ~related~, ~relatedtype~, ~relatedstring~, ~repository~, ~swhid~, ~subtitle~, ~urldate~
 
@@ -52,7 +52,7 @@ whishes to cite. They are listed below in order of granularity.
 
    /Required fields:/ ~author~, ~subtitle~, ~url~, ~year~
 
-   /Optional fields:/ ~abstract~, ~crossref~, ~date~, ~doi~, ~eid~, ~editor~, ~file~, ~hal_id~, ~hal_version~,
+   /Optional fields:/ ~abstract~, ~crossref~, ~date~, ~doi~, ~eprint~, ~eprintclass~, ~eprinttype~, ~editor~, ~file~, ~hal_id~, ~hal_version~,
    ~institution~, ~introducedin~, ~license~, ~month~, ~note~, ~organization~, ~publisher~,
    ~related~, ~relatedtype~, ~relatedstring~, ~repository~, ~swhid~, ~title~, ~urldate~, ~version~
 
@@ -63,7 +63,7 @@ whishes to cite. They are listed below in order of granularity.
 
    /Required fields:/  ~url~
 
-   /Optional fields:/ ~author~, ~abstract~, ~crossref~, ~date~, ~doi~, ~eid~, ~file~, ~hal_id~, ~hal_version~,
+   /Optional fields:/ ~author~, ~abstract~, ~crossref~, ~date~, ~doi~, ~eprint~, ~eprintclass~, ~eprinttype~, ~file~, ~hal_id~, ~hal_version~,
    ~institution~, ~introducedin~, ~license~, ~month~, ~note~, ~organization~, ~publisher~,
    ~related~, ~relatedtype~, ~relatedstring~, ~repository~, ~swhid~, ~subtitle~, ~title~, ~urldate~, ~version~, ~year~
 
@@ -85,7 +85,9 @@ The field description is based on the [[http://mirrors.ibiblio.org/CTAN/macros/l
    - editor :: list (name). The coordinator(s) of large modular software projects.
    - file :: field (verbatim). A link to download a copy of the work.
    - doi :: field (verbatim). The Digital Object Identifier of the work. 
-   - eid :: field (verbatim). An electronic identifier of the work.
+   - eprint [biblatex only] :: field (verbatim). An electronic identifier of the work. This field can be used to accommodate electronic identifiers different from the ones that have a dedicate field in this style.
+   - eprinttype [biblatex only] :: field (verbatim). The type of eprint identifier, e. g., the name of the archive, repository, service, or system the eprint field refers to. Will be typeset by default as a prefix of the content of the eprint field.
+   - eprintclass [biblatex only] :: field (verbatim). Additional information related to the resource indicated by the eprinttype field. This could be a section of an archive, a path indicating a service, a classification of some sort.
    - ~hal_id~ [not in biblatex standard styles] :: field (verbatim). A digital identifier for the 
        software record including its description and metadata on HAL.
    - ~hal_version~ [not in biblatex standard styles] :: field (verbatim). The version of the HAL software record designated by ~hal_id~.