latex3
diff --git a/l3kernel/CHANGELOG.md b/l3kernel/CHANGELOG.md
@@ -7,6 +7,17 @@ this project uses date-based 'snapshot' version identifiers.
 
 ## [Unreleased]
 
+## [2020-01-31]
+
+### Added
+- Table of Contents for combined LaTeX3 News
+
+### Changed
+- Use Lua `utf8` library if available
+
+### Fixed
+- Undefined command in box debugging code
+
 ## [2020-01-22]
 
 ### Added
@@ -37,8 +48,10 @@ this project uses date-based 'snapshot' version identifiers.
 - Set backend at the beginning of `\document` (see #657)
 
 ### Deprecated
-- `\str_<type>_case:n`
-- `\tl_<type>_case:n(n)`
+- `\str_<type>_case:n` replaced by `\str_<type>case:n`
+  except `\str_mixed_case:n` replaced by `\str_titlecase:n`
+- `\tl_<type>_case:n(n)` replaced by `\text_<type>case:n(n)`,
+  except `\tl_mixed_case:n(n)` replaced by `\text_titlecase:n(n)`
 
 ## [2019-11-07]
 
@@ -568,7 +581,8 @@ this project uses date-based 'snapshot' version identifiers.
 - Step functions have been added for dim variables,
   e.g. `\dim_step_inline:nnnn`
 
-[Unreleased]: https://github.com/latex3/latex3/compare/2020-01-22...HEAD
+[Unreleased]: https://github.com/latex3/latex3/compare/2020-01-31...HEAD
+[2020-01-31]: https://github.com/latex3/latex3/compare/2020-01-22...2020-01-31
 [2020-01-22]: https://github.com/latex3/latex3/compare/2020-01-12...2020-01-22
 [2020-01-12]: https://github.com/latex3/latex3/compare/2019-11-07...2020-01-12
 [2019-11-07]: https://github.com/latex3/latex3/compare/2019-10-28...2019-11-07

diff --git a/l3kernel/README.md b/l3kernel/README.md
@@ -1,7 +1,7 @@
 LaTeX3 Programming Conventions
 ==============================
 
-Release 2020-01-22
+Release 2020-01-31
 
 Overview
 --------

diff --git a/l3kernel/doc/interface3.tex b/l3kernel/doc/interface3.tex
@@ -54,7 +54,7 @@
          {latex-team@latex-project.org}%
    }%
 }
-\date{Released 2020-01-22}
+\date{Released 2020-01-31}
 
 \pagenumbering{roman}
 \maketitle

diff --git a/l3kernel/doc/l3news.tex b/l3kernel/doc/l3news.tex
@@ -1,4 +1,4 @@
-% Copyright 2019 The LaTeX3 Project
+% Copyright 2019-2020 The LaTeX3 Project
 
 \providecommand*{\lastissue}{12}
 
@@ -60,6 +60,21 @@
     }%
   }]%
 }
+
+% show the page number on first page of issues:
+
+\renewcommand{\ps@titlepage}{%
+   \renewcommand{\@oddhead}{\hfill}%
+   \renewcommand{\@evenhead}{\hfill}%
+   \renewcommand{\@oddfoot}{\@indiciafont\@indicia\hfill --\thepage}%
+   \renewcommand{\@evenfoot}{\@indiciafont\@indicia\hfill --\thepage}%
+}
+
+% only needed if the old ltnews class is used
+\renewcommand{\@oddfoot}{\@indiciafont\mbox{}\hfill --\thepage}%
+\renewcommand{\@evenfoot}{\@indiciafont\mbox{}\hfill --\thepage}%
+
+
 \makeatother
 
 \begin{document}
@@ -97,7 +112,7 @@
          \let\protect\l@paragraph\protect\l@subsection
        }%
     \fi
-    \ifnum\@issue=\lastissue\space
+    \ifnum\@issue>9\space  % we may have issue tocs ...
       \addtocontents{toc}{%
         \let\protect\l@paragraph\protect\saved@l@paragraph
       }%
@@ -106,15 +121,15 @@
       \addtocontents{toc}{\protect\setcounter{tocdepth}{4}}%
       \renewcommand*{\tableofcontents}{%
         \section*{\contentsname}%
-        \@starttoc{toc\lastissue}%
+        \@starttoc{toc\theissue}%
       }%
       \let\saved@addtocontents\addtocontents
       \renewcommand*{\addtocontents}[2]{%
         \saved@addtocontents{##1}{##2}%
         \def\temp@toc{toc}%
         \def\temp@param{##1}%
         \ifx\temp@toc\temp@param
-          \saved@addtocontents{toc\lastissue}{##2}%
+          \saved@addtocontents{toc\theissue}{##2}%
         \fi
       }%
       \let\l@subsubsection\l@subsection

diff --git a/l3kernel/doc/l3news07.tex b/l3kernel/doc/l3news07.tex
@@ -59,7 +59,7 @@ \section{Deforming boxes}
 us to suggest improvements to the \LaTeXe{} graphics drivers, enabling clipping
 with the \XeTeX{} engine.
 
-\section{A TeX-based regex engine}
+\section{A \TeX{}-based regex engine}
 
 Bruno Le Floch has been %working across the codebase, %% omitted to avoid page break
 improving the efficiency

diff --git a/l3kernel/doc/l3news10.tex b/l3kernel/doc/l3news10.tex
@@ -66,7 +66,7 @@ \section{\pkg{l3build}: Testing \LaTeX{} packages}
 up for creating releases will require only a few lines of configuration.
 
 In addition to the documentation distributed with \pkg{l3build}, the project
-website~\cite[publications in 2014]{project-publications} contains some
+website~\cite[publications in 2014]{10:project-publications} contains some
 articles, videos and conference presentations that explain how to use
 \pkg{l3build} to manage and test any type of (\LaTeX{}) package.
 
@@ -186,7 +186,7 @@ \section{Globally optimized pagination of documents}
 2016 in Toronto and later in the year at \mbox{DocEng'16}, the ACM Symposium on
 Document Engineering in Vienna. A link to the ACM paper (that allows a download
 free of charge) can be found on the project
-website~\cite{project-publications}. The site also holds the speaker notes from
+website~\cite{10:project-publications}. The site also holds the speaker notes from
 Toronto and will host a link to a video of the presentation once it becomes
 available.
 
@@ -212,7 +212,7 @@ \section{Looking forward}
 
 \begin{thebibliography}{10}
   \raggedright
-  \bibitem{project-publications}
+  \bibitem{10:project-publications}
     Links to various publications by members of the \LaTeX{} Project Team.
     \newblock \url{https://www.latex-project.org/publications}.
 \end{thebibliography}

diff --git a/l3kernel/doc/l3news11.tex b/l3kernel/doc/l3news11.tex
@@ -198,7 +198,7 @@ \section{\pkg{l3build} updates}
   \raggedright
   \bibitem{SubGit}
     \emph{SubGit}, TMate Software, \url{https://subgit.com}
-  \bibitem{project-publications}
+  \bibitem{11:project-publications}
     Links to various publications by members of the \LaTeX{} Project Team.
     \newblock \url{https://www.latex-project.org/publications}.
 \end{thebibliography}

diff --git a/l3kernel/doc/l3styleguide.tex b/l3kernel/doc/l3styleguide.tex
@@ -32,7 +32,7 @@
         {latex-team@latex-project.org}%
     }%
 }
-\date{Released 2020-01-22}
+\date{Released 2020-01-31}
 
 \begin{document}
 

diff --git a/l3kernel/doc/l3syntax-changes.tex b/l3kernel/doc/l3syntax-changes.tex
@@ -32,7 +32,7 @@
         {latex-team@latex-project.org}%
     }%
 }
-\date{Released 2020-01-22}
+\date{Released 2020-01-31}
 
 \newcommand{\TF}{\textit{(TF)}}
 

diff --git a/l3kernel/doc/l3term-glossary.tex b/l3kernel/doc/l3term-glossary.tex
@@ -32,7 +32,7 @@
         {latex-team@latex-project.org}%
     }%
 }
-\date{Released 2020-01-22}
+\date{Released 2020-01-31}
 
 \newcommand{\TF}{\textit{(TF)}}
 

diff --git a/l3kernel/doc/source3.tex b/l3kernel/doc/source3.tex
@@ -53,7 +53,7 @@
          {latex-team@latex-project.org}%
    }%
 }
-\date{Released 2020-01-22}
+\date{Released 2020-01-31}
 
 \pagenumbering{roman}
 \maketitle

diff --git a/l3kernel/expl3.dtx b/l3kernel/expl3.dtx
@@ -24,7 +24,7 @@
 %
 %<*driver|generic|package|2ekernel>
 %</driver|generic|package|2ekernel>
-\def\ExplFileDate{2020-01-22}%
+\def\ExplFileDate{2020-01-31}%
 %<*driver>
 \documentclass[full]{l3doc}
 \usepackage{graphicx}
@@ -51,7 +51,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2020-01-22}
+% \date{Released 2020-01-31}
 %
 % \maketitle
 %

diff --git a/l3kernel/l3alloc.dtx b/l3kernel/l3alloc.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2020-01-22}
+% \date{Released 2020-01-31}
 %
 % \maketitle
 %

diff --git a/l3kernel/l3basics.dtx b/l3kernel/l3basics.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2020-01-22}
+% \date{Released 2020-01-31}
 %
 % \maketitle
 %

diff --git a/l3kernel/l3bootstrap.dtx b/l3kernel/l3bootstrap.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2020-01-22}
+% \date{Released 2020-01-31}
 %
 % \maketitle
 %

diff --git a/l3kernel/l3box.dtx b/l3kernel/l3box.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2020-01-22}
+% \date{Released 2020-01-31}
 %
 % \maketitle
 %

diff --git a/l3kernel/l3candidates.dtx b/l3kernel/l3candidates.dtx
@@ -44,7 +44,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2020-01-22}
+% \date{Released 2020-01-31}
 %
 % \maketitle
 %
@@ -1062,6 +1062,10 @@
 %
 % \subsection{Additions to \pkg{l3prg}}
 %
+%    \begin{macrocode}
+%<@@=bool>
+%    \end{macrocode}
+%
 % \begin{macro}[added = 2018-05-10]
 %   {\bool_set_inverse:N, \bool_set_inverse:c, \bool_gset_inverse:N, \bool_gset_inverse:c}
 %   Set to \texttt{false} or \texttt{true} locally or globally.

diff --git a/l3kernel/l3clist.dtx b/l3kernel/l3clist.dtx
@@ -44,7 +44,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2020-01-22}
+% \date{Released 2020-01-31}
 %
 % \maketitle
 %

diff --git a/l3kernel/l3coffins.dtx b/l3kernel/l3coffins.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2020-01-22}
+% \date{Released 2020-01-31}
 %
 % \maketitle
 %

diff --git a/l3kernel/l3color-base.dtx b/l3kernel/l3color-base.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2020-01-22}
+% \date{Released 2020-01-31}
 %
 % \maketitle
 %

diff --git a/l3kernel/l3debug.dtx b/l3kernel/l3debug.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2020-01-22}
+% \date{Released 2020-01-31}
 %
 % \maketitle
 %
@@ -1208,7 +1208,7 @@
 %<@@=box>
   \__kernel_patch_eval:nn
     { \@@_dim_eval:n }
-    { \@@_eval:w { } }
+    { \@@_dim_eval:w { } }
 %<@@=dim>
   \__kernel_patch_eval:nn
     {

diff --git a/l3kernel/l3deprecation.dtx b/l3kernel/l3deprecation.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2020-01-22}
+% \date{Released 2020-01-31}
 %
 % \maketitle
 %

diff --git a/l3kernel/l3doc.dtx b/l3kernel/l3doc.dtx
@@ -79,7 +79,7 @@ and all files in that bundle must be distributed together.
 %
 % \title{The \cls{l3doc} class}
 % \author{\Team}
-% \date{Released 2020-01-22}
+% \date{Released 2020-01-31}
 % \maketitle
 % \tableofcontents
 %

diff --git a/l3kernel/l3docstrip.dtx b/l3kernel/l3docstrip.dtx
@@ -63,7 +63,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2020-01-22}
+% \date{Released 2020-01-31}
 %
 % \maketitle
 %

diff --git a/l3kernel/l3expan.dtx b/l3kernel/l3expan.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2020-01-22}
+% \date{Released 2020-01-31}
 %
 % \maketitle
 %

diff --git a/l3kernel/l3file.dtx b/l3kernel/l3file.dtx
@@ -44,7 +44,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2020-01-22}
+% \date{Released 2020-01-31}
 %
 % \maketitle
 %

diff --git a/l3kernel/l3final.dtx b/l3kernel/l3final.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2020-01-22}
+% \date{Released 2020-01-31}
 %
 % \maketitle
 %

diff --git a/l3kernel/l3flag.dtx b/l3kernel/l3flag.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2020-01-22}
+% \date{Released 2020-01-31}
 %
 % \maketitle
 %

diff --git a/l3kernel/l3fp-assign.dtx b/l3kernel/l3fp-assign.dtx
@@ -40,7 +40,7 @@
 %          {latex-team@latex-project.org}^^A
 %    }^^A
 % }
-% \date{Released 2020-01-22}
+% \date{Released 2020-01-31}
 % \maketitle
 %
 % \begin{documentation}

diff --git a/l3kernel/l3fp-aux.dtx b/l3kernel/l3fp-aux.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2020-01-22}
+% \date{Released 2020-01-31}
 %
 % \maketitle
 %