[latex3-commits] [latex3/latex2e] tag-graphics: handle older hyperref versions (c09c5e74)

[github at latex-project.org]

Repository : https://github.com/latex3/latex2e
On branch  : tag-graphics
Link       : https://github.com/latex3/latex2e/commit/c09c5e74b9227e262a765211896196bd9305588c

>---------------------------------------------------------------

commit c09c5e74b9227e262a765211896196bd9305588c
Author: Ulrike Fischer <fischer at troubleshooting-tex.de>
Date:   Sun May 21 11:40:13 2023 +0200

    handle older hyperref versions


>---------------------------------------------------------------

c09c5e74b9227e262a765211896196bd9305588c
 required/latex-lab/latex-lab-bib.dtx | 21 +++++++++++++++++++--
 1 file changed, 19 insertions(+), 2 deletions(-)

diff --git a/required/latex-lab/latex-lab-bib.dtx b/required/latex-lab/latex-lab-bib.dtx
index 24db1b7a..d9ad2ff2 100644
--- a/required/latex-lab/latex-lab-bib.dtx
+++ b/required/latex-lab/latex-lab-bib.dtx
@@ -140,6 +140,11 @@
        \immediate
        \write\@auxout{\string\bibcite{#2}{#1}}}\fi\ignorespaces}
 %    \end{macrocode}
+% we make a copy to be able to reinstate the definition. This is e.g.
+% currently needed with hyperref.
+%    \begin{macrocode}
+\let\@kernel at copy@lbibitem\@lbibitem       
+%    \end{macrocode}
 % \end{macro}
 % 
 % \begin{macro}{\@bibitem}
@@ -152,6 +157,7 @@
   \AddToHookNext{para/begin}{\makebox[0pt][r]{\MakeLinkTarget*{\l_@@_bib_target_tl}\hspace{\leftmargin}}}
   \item\if at filesw \immediate\write\@auxout
        {\string\bibcite{#1}{\the\value{\@listctr}}}\fi\ignorespaces}
+\let\@kernel at copy@bibitem\@bibitem           
 %    \end{macrocode}
 % \end{macro}
 % 
@@ -180,6 +186,7 @@
       \UseHookWithArguments{bibcite/after}{2}{#1}{#2} 
        }%
      }% 
+\let\@kernel at copy@bibcite\bibcite         
 %    \end{macrocode}
 % Now we add the tagging structure.
 % TODO: the ref key should expand its argument directly!
@@ -202,8 +209,18 @@
 %    \begin{macrocode}
 \AddToHook{package/hyperref/after}
  {
-  \AddToHookWithArguments{bibcite/before}{\hyper at linkstart{cite}{cite.#1\@extra at b@citeb}}
-  \AddToHookWithArguments{bibcite/after}{\hyper at linkend}
+%    \end{macrocode}
+% the next hyperref will allow to suppress the bib patches, but with older
+% versions we muss reinstated them. 
+%    \begin{macrocode}
+   \@ifpackagelater{hyperref}{2023-05-01}{}
+    {
+      \let\@lbibitem\@kernel at copy@lbibitem
+      \let\@bibitem\@kernel at copy@bibitem
+      \let\bibcite\@kernel at copy@bibcite
+    }
+   \AddToHookWithArguments{bibcite/before}{\hyper at linkstart{cite}{cite.#1\@extra at b@citeb}}
+   \AddToHookWithArguments{bibcite/after}{\hyper at linkend}
  }
 %    \end{macrocode}
 %