5 files changed, 16 insertions, 7 deletions
diff --git a/Master/texmf-dist/doc/latex/knowledge/README.md b/Master/texmf-dist/doc/latex/knowledge/README.md
index 864921ac527..5d3e671a104 100644
--- a/Master/texmf-dist/doc/latex/knowledge/README.md
+++ b/Master/texmf-dist/doc/latex/knowledge/README.md
@@ -3,8 +3,8 @@ This directory contains the package
 
   name: knowledge
   license: LaTeX Project Public License version 1.2 or above
-  version: v1.22
-  date: 2020/03/05
+  version: v1.23
+  date: 2020/04/25
   author: Thomas Colcombet
   mail: thomas.colcombet@irif.fr
   web: https://www.irif.fr/~colcombe/knowledge_en.html
diff --git a/Master/texmf-dist/doc/latex/knowledge/knowledge.pdf b/Master/texmf-dist/doc/latex/knowledge/knowledge.pdf
index 0dd621bdd46..272989ef3cf 100644
--- a/Master/texmf-dist/doc/latex/knowledge/knowledge.pdf
+++ b/Master/texmf-dist/doc/latex/knowledge/knowledge.pdf
diff --git a/Master/texmf-dist/doc/latex/knowledge/knowledge.tex b/Master/texmf-dist/doc/latex/knowledge/knowledge.tex
index 720156a3ea4..98fc76744c2 100644
--- a/Master/texmf-dist/doc/latex/knowledge/knowledge.tex
+++ b/Master/texmf-dist/doc/latex/knowledge/knowledge.tex
@@ -744,6 +744,7 @@ I have seen Till Tantau who explained me how to test whether a material is displ
 \item[2020-01-25] Corrected bug when "knowledge@@package" is used without "hyperref@@package" (thanks to Rémi Nollet).
 \item[2020-01-25] Corrected bug that made the kaux file not stabilize (thanks to Rémi Nollet). V1.21 on CTAN.
 \item[2020-03-05] No \texttt{hidelinks} and \texttt{breaklinks} are automatically activated unless the new option \kl{no patch} is activated. Doc update. V1.22 on CTAN.
+\item[2020-04-25] Made the package compatible with 2016 versions of LaTeX. Useful when \texttt{knowledge.sty} is included with and compile in arXiv. V1.23 on CTAN.
 \end{compactdesc}
 \normalsize
 %\restoregeometry
@@ -2652,7 +2653,6 @@ Another possibility is to force some environment to deactivate systematically th
 \end{code}\noindent
 will deactivate the "quotation notation" in all the "tikzcd@@env" environments.
 
-
 \subsection{Problems with \kl(package){amsmath}}
 \label{section:amsmath questions}
 
diff --git a/Master/texmf-dist/source/latex/knowledge/knowledge-code.dtx b/Master/texmf-dist/source/latex/knowledge/knowledge-code.dtx
index 73ec799f183..c76b3f0aac5 100644
--- a/Master/texmf-dist/source/latex/knowledge/knowledge-code.dtx
+++ b/Master/texmf-dist/source/latex/knowledge/knowledge-code.dtx
@@ -23,7 +23,7 @@
 %
 % \iffalse
 %<head>\usepackage{expl3}
-%<head>\ProvidesExplPackage{knowledge}{2020/03/05}{1.22}{}
+%<head>\ProvidesExplPackage{knowledge}{2020/03/05}{1.23}{}
 %<*driver>
 \def\knowledgecode{active}
 \input{knowledge.tex}
@@ -55,6 +55,7 @@
 % \changes{1.20}{2019/12/03}{bug fix} %
 % \changes{1.21}{2020/01/26}{bug fix} %
 % \changes{1.22}{2020/03/05}{improvements} %
+% \changes{1.23}{2020/04/25}{minor change} %
 % \GetFileInfo{knowledge.sty} %
 % \DoNotIndex{}
 %
@@ -74,8 +75,8 @@ This directory contains the package
 
   name: knowledge
   license: LaTeX Project Public License version 1.2 or above
-  version: v1.22
-  date: 2020/03/05
+  version: v1.23
+  date: 2020/04/25
   author: Thomas Colcombet
   mail: thomas.colcombet@irif.fr
   web: https://www.irif.fr/~colcombe/knowledge_en.html
@@ -145,6 +146,12 @@ Content of the file knowledge-sources.zip:
   {}
 %    \end{macrocode}
 %
+% When uploading to arXiv, a 2016 version of LaTeX is used and one macro name has changed since this in \kl{expl3}. Let us correct it: it makes it possible to include the latest version of \kl(package){knowledge} as a .sty file:
+%    \begin{macrocode}
+\cs_if_exist:NTF\ior_str_get:NN{}
+  {\cs_set_eq:NN\ior_str_get:NN\ior_get_str:NN}
+%    \end{macrocode}
+%
 %\AP One defines the code of \csintro{\klparse_ifnextchar:NTF}
 % which is a link to \cs{\@ifnextchar},
 % as well as the constant \csintro{\klparse_novalue_tl} which contains
diff --git a/Master/texmf-dist/tex/latex/knowledge/knowledge.sty b/Master/texmf-dist/tex/latex/knowledge/knowledge.sty
index 82a7ccfb846..fa431f68578 100644
--- a/Master/texmf-dist/tex/latex/knowledge/knowledge.sty
+++ b/Master/texmf-dist/tex/latex/knowledge/knowledge.sty
@@ -23,7 +23,7 @@
 %% LaTeX version 1999/12/01 or later.
 %% 
 \usepackage{expl3}
-\ProvidesExplPackage{knowledge}{2020/03/05}{1.22}{}
+\ProvidesExplPackage{knowledge}{2020/03/05}{1.23}{}
 %%%%%%%%%%
 \RequirePackage{l3keys2e}
 \RequirePackage{etoolbox}
@@ -808,6 +808,8 @@
   {}
 \cs_new:Nn\knowledge_end_module:
   {}
+\cs_if_exist:NTF\ior_str_get:NN{}
+  {\cs_set_eq:NN\ior_str_get:NN\ior_get_str:NN}
 \cs_set_eq:Nc\klparse_ifnextchar:NTF{@ifnextchar}
 \tl_new:N\klparse_novalue_tl
 \NewDocumentCommand\klparse_setnovalue{o}