latex-dev (19nov19)

git-svn-id: svn://tug.org/texlive/trunk@52866 c570f23f-e606-0410-a88d-b1316a301751

27 files changed, 610 insertions, 164 deletions

diff --git a/Master/texmf-dist/source/latex-dev/amsmath/amsmath.dtx b/Master/texmf-dist/source/latex-dev/amsmath/amsmath.dtx
index 8671694b706..11b7545c266 100644
--- a/Master/texmf-dist/source/latex-dev/amsmath/amsmath.dtx
+++ b/Master/texmf-dist/source/latex-dev/amsmath/amsmath.dtx
@@ -86,7 +86,7 @@ Bug reports can be opened (category \texttt{#1}) at\\%
 %    \end{macrocode}
 %
 %    \begin{macrocode}
-\ProvidesPackage{amsmath}[2019/04/01 v2.17c AMS math features]
+\ProvidesPackage{amsmath}[2019/11/16 v2.17d AMS math features]
 %    \end{macrocode}
 %
 % \section{Catcode defenses}
@@ -1641,10 +1641,19 @@ Foreign command \@backslashchar#1;\MessageBreak
 %    By redefining \cs{set@mathaccent} we ensure that
 %    \cn{DeclareMathAccent} will define accent commands to run our
 %    \cs{mathaccentV} function instead of the primitive \cs{mathaccent}.
+% \changes{v2.17d}{2019/11/16}{Added \cs{MakeRobust} to match kernel
+%                              change (gh/216)}
 %    \begin{macrocode}
 \def\set@mathaccent#1#2#3#4{%
-  \xdef#2{\@nx\protect\@nx\mathaccentV
+%    \end{macrocode}
+%    Now that the redefinitions done inside amsmath of the basic accents
+%    are all robust  we can drop the \cs{protect} here.
+%    \begin{macrocode}
+  \xdef#2{%
+%    \@nx\protect
+    \@nx\mathaccentV
     {\@xp\@gobble\string#2}\hexnumber@#1#4}%
+  \MakeRobust#2%
 }
 %    \end{macrocode}
 %
@@ -1714,6 +1723,13 @@ Foreign command \@backslashchar#1;\MessageBreak
       Unable to redefine math accent \string#5}%
   \fi\fi}
 \def\@tempc#1"#2#3#4#5#6\@nil#7{%
+%    \end{macrocode}
+%    Drop the inner part of the robust accent so that it can be recreated
+%    without a warning.
+% \changes{v2.17d}{2019/11/16}{Make temporarily fragile to match kernel
+%                              change (gh/216)}
+%    \begin{macrocode}
+  \@xp\let\csname\@xp\@gobble\string#7\space\endcsname\@undefined
   \chardef\@tempd="#3\relax\set@mathaccent\@tempd{#7}{#2}{#4#5}}
 \def\@tempd#1\@nil#2{%
     \PackageWarningNoLine{amsmath}{%
@@ -2091,7 +2107,7 @@ Foreign command \@backslashchar#1;\MessageBreak
 %  \begin{macro}{\overunderset}
 %    This is the combination of the previous two commands which is
 %    something that is sometimes needed.
-% \changes{v2.17c}{FMi}{New command \cs{overunderset}}
+% \changes{v2.17c}{2019/04/01}{New command \cs{overunderset}}
 %    \begin{macrocode}
 \newcommand{\overunderset}[3]{\binrel@{#3}%
   \binrel@@{\mathop{\kern\z@#3}\limits^{#1}_{#2}}}
diff --git a/Master/texmf-dist/source/latex-dev/base/classes.dtx b/Master/texmf-dist/source/latex-dev/base/classes.dtx
index 9fed94dfdd9..1de8095a6e1 100644
--- a/Master/texmf-dist/source/latex-dev/base/classes.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/classes.dtx
@@ -53,7 +53,7 @@
 %<*driver>
 \ProvidesFile{classes.drv}
 %</driver>
-              [2019/08/27 v1.4j
+              [2019/10/25 v1.4k
 %<article|report|book> Standard LaTeX document class]
 %<10pt|11pt|12pt>      Standard LaTeX file (size option)]
 %    \end{macrocode}
@@ -611,9 +611,13 @@
 \normalsize
 %    \end{macrocode}
 %    We use |\MakeRobust| instead of |\DeclareRobustCommand| above to avoid a log
-%    entry for the redefinition.
+%    entry for the redefinition. But if we are running in in a rollback situation
+%    (prior to 2015) we don't touch it.
+% \changes{v1.4k}{2019/10/25}{Roll back handling (gh/201)} 
 %    \begin{macrocode}
-\MakeRobust\normalsize
+\ifx\MakeRobust\@undefined \else 
+    \MakeRobust\normalsize
+\fi
 %    \end{macrocode}
 % \end{macro}
 % \end{macro}
diff --git a/Master/texmf-dist/source/latex-dev/base/doc.dtx b/Master/texmf-dist/source/latex-dev/base/doc.dtx
index 971bb6053eb..e7f2b44c2f3 100644
--- a/Master/texmf-dist/source/latex-dev/base/doc.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/doc.dtx
@@ -35,7 +35,7 @@
 %<+package|shortvrb>\NeedsTeXFormat{LaTeX2e}[1994/12/01]
 %<+package> \ProvidesPackage{doc}
 %<+shortvrb>\ProvidesPackage{shortvrb}
-%<+package|shortvrb>  [2018/09/25 v2.1i
+%<+package|shortvrb>  [2019/11/10 v2.1k
 %<+package|shortvrb>   Standard LaTeX documentation package (FMi)]
 %\catcode`\<=12
 %
@@ -139,7 +139,7 @@
 % \changes{v1.9t}{1995/05/11}{Use \cs{GetFileInfo}}
 % \GetFileInfo{doc.sty}
 %
-% \CheckSum{2206}  ^^A % keep the checksum in this file
+% \CheckSum{2208}  ^^A % keep the checksum in this file
 %
 % \title{The \DOC{} and \texttt{shortvrb} Packages\thanks
 %    {This file has version number \fileversion{} dated \filedate{}.}}
@@ -2005,7 +2005,13 @@
 %    We deal in a similar way with the star form of this environment.
 %    \begin{macrocode}
 \@namedef{verbatim*}{\@beginparpenalty \predisplaypenalty \@verbatim
-              \MacroFont \@sxverbatim}
+%    \end{macrocode}
+%    
+%  \changes{v2.1j}{2019/11/03}{Kernel now sets up \cs{verbvisiblespace} (gh/205)}
+%  \changes{v2.1k}{2019/11/10}{Put the definition into the right command :-( (gh/205)}
+%    \begin{macrocode}
+              \@setupverbvisiblespace
+              \MacroFont \@vobeyspaces \@sxverbatim}
 %    \end{macrocode}
 % \end{environment}
 % \end{environment}
@@ -2121,13 +2127,14 @@
 % \changes{v1.8b}{1993/09/21}{Changed to conform to new LaTeX verbatim,
 %                           which has better error trapping.}
 % See \cite{art:verbatim} for commentary.
-%    \begin{macrocode}
-\def\@sverb#1{%
-  \catcode`#1\active  \lccode`\~`#1%
-  \gdef\verb@balance@group{\verb@egroup
-     \@latex@error{Illegal use of \noexpand\verb command}\@ehc}%
-  \aftergroup\verb@balance@group
-  \lowercase{\let~\verb@egroup}}
+%  \changes{v2.1j}{2019/11/03}{Use the kernel definition, no change needed (gh/205)}
+%    \begin{macrocode}
+%\def\@sverb#1{%
+%  \catcode`#1\active  \lccode`\~`#1%
+%  \gdef\verb@balance@group{\verb@egroup
+%     \@latex@error{Illegal use of \noexpand\verb command}\@ehc}%
+%  \aftergroup\verb@balance@group
+%  \lowercase{\let~\verb@egroup}}
 %    \end{macrocode}
 % \end{macro}
 %
diff --git a/Master/texmf-dist/source/latex-dev/base/fontdef.dtx b/Master/texmf-dist/source/latex-dev/base/fontdef.dtx
index 38d51411c39..c9c5f5d77dc 100644
--- a/Master/texmf-dist/source/latex-dev/base/fontdef.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/fontdef.dtx
@@ -39,7 +39,7 @@
 %<driver, >\ProvidesFile{fontdef.drv}
 % \fi
 %          \ProvidesFile{fontdef.dtx}
-%<-latexrelease>           [2019/08/27 v3.0c LaTeX Kernel
+%<-latexrelease>           [2019/09/21 v3.0d LaTeX Kernel
 % \iftrue  (\else
 %<text,   >(Text
 %<math,   >(Math
@@ -966,7 +966,17 @@
 \DeclareMathSymbol{\Leftrightarrow}{\mathrel}{symbols}{"2C}
 \DeclareMathSymbol{\Leftarrow}{\mathrel}{symbols}{"28}
 \DeclareMathSymbol{\Rightarrow}{\mathrel}{symbols}{"29}
-\DeclareRobustCommand\neq{\not=} \let\ne=\neq
+\DeclareRobustCommand\neq{\not=}
+%    \end{macrocode}
+%    As \cs{neq} is robust we should not use \cs{let} to define
+%    \cs{ne} as then then it would change if \cs{neq} changes.
+% \changes{v3.0d}{2019/09/21}{Distangle alias (gh/184)}
+%    \begin{macrocode}
+%\let\ne=\neq
+\DeclareRobustCommand\ne{\not=}
+%    \end{macrocode}
+%    It is ok to use \cs{let} for those declared by \cs{DeclareMathSymbol}.
+%    \begin{macrocode}
 \DeclareMathSymbol{\leq}{\mathrel}{symbols}{"14}
    \let\le=\leq
 \DeclareMathSymbol{\geq}{\mathrel}{symbols}{"15}
@@ -1216,7 +1226,18 @@
    {\mathord}{symbols}{"6B}{largesymbols}{"3D}
 \DeclareMathDelimiter{\Vert}
    {\mathord}{symbols}{"6B}{largesymbols}{"0D}
-\let\|=\Vert
+%    \end{macrocode}
+%    \cs{DeclareMathDelimiter} produces a command that is robust (with
+%    an internal macro containing the payload) so we should not use
+%    \cs{let} for making an alias
+% \changes{v3.0d}{2019/09/21}{Distangle alias (gh/184)}
+%    \begin{macrocode}
+%\let\|=\Vert
+\DeclareMathDelimiter{\|}
+   {\mathord}{symbols}{"6B}{largesymbols}{"0D}
+%    \end{macrocode}
+%
+%    \begin{macrocode}
 \DeclareMathDelimiter{\vert}
    {\mathord}{symbols}{"6A}{largesymbols}{"0C}
 \DeclareMathDelimiter{\uparrow}
diff --git a/Master/texmf-dist/source/latex-dev/base/format.ins b/Master/texmf-dist/source/latex-dev/base/format.ins
index 5a1bf6e79c6..d060044552e 100644
--- a/Master/texmf-dist/source/latex-dev/base/format.ins
+++ b/Master/texmf-dist/source/latex-dev/base/format.ins
@@ -209,9 +209,6 @@ the system are in the document `cfgguide.tex'.
           \from{ltmath.dtx}{leqno}}
   }
 
-
-
-
 \generateFile{oldlfont.sty}{t}{%
   \from{oldlfont.dtx}{package}
 }
@@ -220,6 +217,9 @@ the system are in the document `cfgguide.tex'.
   \from{newlfont.dtx}{package}
 }
 
+% expl3-based extensions
+\generate{\file{ltexpl.ltx}{\from{ltexpl.dtx}{2ekernel}}}
+
 % luatex support (TeX part)
 
 \generate{\file{ltluatex.tex}{\from{ltluatex.dtx}{tex,plain}}}
diff --git a/Master/texmf-dist/source/latex-dev/base/latexrelease.ins b/Master/texmf-dist/source/latex-dev/base/latexrelease.ins
index 9358692a910..e515143740f 100644
--- a/Master/texmf-dist/source/latex-dev/base/latexrelease.ins
+++ b/Master/texmf-dist/source/latex-dev/base/latexrelease.ins
@@ -122,6 +122,7 @@ extension .ins) which are part of the distribution.
   \from{ltxref.dtx}      {latexrelease}% empty
   \from{ltmiscen.dtx}    {latexrelease}%
   \from{ltluatex.dtx}    {latexrelease}%
+  \from{ltexpl.dtx}      {latexrelease}%
   \from{ltfinal.dtx}     {latexrelease}%
 }
 
diff --git a/Master/texmf-dist/source/latex-dev/base/ltclass.dtx b/Master/texmf-dist/source/latex-dev/base/ltclass.dtx
index 3d19971701f..9dc65d2bb9b 100644
--- a/Master/texmf-dist/source/latex-dev/base/ltclass.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/ltclass.dtx
@@ -33,7 +33,7 @@
 %<*driver>
 % \fi
 \ProvidesFile{ltclass.dtx}
-             [2019/09/11 v1.3c LaTeX Kernel (Class & Package Interface)]
+             [2019/10/18 v1.3d LaTeX Kernel (Class & Package Interface)]
 % \iffalse
 \documentclass{ltxdoc}
 \GetFileInfo{ltclass.dtx}
@@ -155,7 +155,7 @@
 % verbatim to the file name given as the first argument, together with
 % some comments about how it was produced.
 %
-% The package can also be called with an optional argument which is
+% The environment can also be called with an optional argument which is
 % used to alter some of its behavior: option \texttt{force} or 
 % \texttt{overwrite} will allow for overwriting existing files,
 % option \texttt{nosearch} will only check the current directory
@@ -1429,12 +1429,13 @@
 %         {Made the initial version [] not [\cs{@unknownversion}]}
 % \changes{v0.2m}{1993/12/07}
 %         {Reset \cs{CurrentOption}}
+% \changes{v1.3d}{2019/10/18}{Initialize \cs{...-h@@k} only when loading
+%                             the package or class (gh/198)}
 %    \begin{macrocode}
 \def\@onefilewithoptions#1[#2][#3]#4{%
   \@pushfilename
   \xdef\@currname{#1}%
   \global\let\@currext#4%
-  \expandafter\let\csname\@currname.\@currext-h@@k\endcsname\@empty
   \let\CurrentOption\@empty
   \@reset@ptions
   \makeatletter
@@ -1470,6 +1471,11 @@
 %    \begin{macrocode}
        \global\expandafter
        \let\csname ver@\@currname.\@currext\endcsname\@empty
+%    \end{macrocode}
+%    We initialize \cs{...-h@@k} here and only if we load the file so that it
+%    remains undefined otherwise.
+%    \begin{macrocode}
+       \expandafter\let\csname\@currname.\@currext-h@@k\endcsname\@empty
        \InputIfFileExists
          {\@currname.\@currext}%
          {}%
@@ -1731,8 +1737,6 @@
 %<latexrelease>\IncludeInRelease{2019/10/01}%
 %<latexrelease>                 {\filec@ntents}{Spaces in file names + optional arg}%
 %
-
-
 %    \end{macrocode}
 %    We use |@tempswa| to mean no preamble writing and reuse |@filesw|
 %    to indicate no overwriting:
@@ -2153,7 +2157,7 @@
 %  \end{macro}
 %  \end{macro}
 %  \end{macro}
-
+%
 %  \begin{macro}{\pkgcls@candidate}
 %  \begin{macro}{\pkgcls@releasedate}
 %    When looping through the |\DeclareRelease| declarations we
@@ -2388,10 +2392,7 @@
   \def\pkgcls@targetlabel{#1}}
 %    \end{macrocode}
 %  \end{macro}
-
-
-
-
+%
 %  \begin{macro}{\DeclareRelease}
 %    First argument is the ``name'' of the release and it can be left empty
 %    if one doesn't like to give a name to the release.
@@ -2497,10 +2498,7 @@
 }
 %    \end{macrocode}
 %  \end{macro}
-
-
-
-
+%
 %  \begin{macro}{\pkgcls@use@this@release}
 %    If a certain release has been selected (stored in the external
 %    file given in \verb=#1=) we need to input it and afterwards stop
@@ -2535,8 +2533,7 @@
 }
 %    \end{macrocode}
 %  \end{macro}
-
-
+%
 %  \begin{macro}{\pkgcls@show@selection}
 %    This command records what selection was made. As that is needed
 %    in two places (and it is rather lengthly) it was placed in a
@@ -2578,8 +2575,7 @@
 }
 %    \end{macrocode}
 %  \end{macro}
- 
-
+%
 %  \begin{macro}{\pkgcls@rollbackdate@error}
 %    This is called if the requested rollback date is earlier than the
 %    earliest known release of a package or class.
@@ -2635,7 +2631,6 @@
 %    |\DeclareCurrentRelease| but no declared older releases (so
 %    basically the use of the declaration is a bit dubious).
 %    \begin{macrocode}
-
         \ifx\pkgcls@candidate\@empty
           \pkgcls@rollbackdate@error{#2}%
         \else
@@ -2669,7 +2664,6 @@
 %  \end{macro}
 %
 %
-
 %  \begin{macro}{\IfTargetDateBefore}
 %    This enables a simple form of conditional code inside a class or
 %    package file. If there is a date request and the request date is
diff --git a/Master/texmf-dist/source/latex-dev/base/ltdirchk.dtx b/Master/texmf-dist/source/latex-dev/base/ltdirchk.dtx
index b9db177f195..744759f3176 100644
--- a/Master/texmf-dist/source/latex-dev/base/ltdirchk.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/ltdirchk.dtx
@@ -37,7 +37,7 @@
 %<*driver>
 % \fi
 \ProvidesFile{ltdirchk.dtx}
-             [2016/10/15 v1.2b LaTeX Kernel (System Dependent Parts)]
+             [2019/11/01 v1.3a LaTeX Kernel (System Dependent Parts)]
 % \iffalse
 \documentclass{ltxdoc}
 \GetFileInfo{ltdirchk.dtx}
@@ -918,14 +918,43 @@
 %
 % |\filename@simple| is used by all three versions.
 % Finally we can split off the extension.
+% \changes{v1.3a}{2019/11/01}
+%         {take last . not first}
 %    \begin{macrocode}
-  \def\filename@simple#1.#2\\{%
-    \ifx\\#2\\%
-       \let\filename@ext\relax
-    \else
-       \edef\filename@ext{\filename@dot#2\\}%
-    \fi
-    \edef\filename@base{#1}}
+%</dircheck>
+%<*dircheck,latexrelease>
+%<latexrelease>\IncludeInRelease{2019/10/01}{\filename@simple}
+%<latexrelease>                             {Final dot for extension}%
+\def\filename@simple#1.#2\\{%
+  \ifx\\#2\\%
+    \let\filename@ext\relax
+    \edef\filename@base{#1}%
+  \else
+    \filename@dots{#1}#2\\%
+  \fi}
+%    \end{macrocode}
+%
+%    \begin{macrocode}
+\def\filename@dots#1#2.#3\\{%
+  \ifx\\#3\\%
+    \def\filename@ext{#2}%
+    \edef\filename@base{#1}%
+  \else
+    \filename@dots{#1.#2}#3\\%
+  \fi}
+%<latexrelease>\EndIncludeInRelease
+%<latexrelease>\IncludeInRelease{0000/00/00}{\filename@simple}
+%<latexrelease>                             {Final dot for extension}%
+%<latexrelease>  \def\filename@simple#1.#2\\{%
+%<latexrelease>    \ifx\\#2\\%
+%<latexrelease>       \let\filename@ext\relax
+%<latexrelease>    \else
+%<latexrelease>       \edef\filename@ext{\filename@dot#2\\}%
+%<latexrelease>    \fi
+%<latexrelease>    \edef\filename@base{#1}}
+%<latexrelease>\EndIncludeInRelease
+%</dircheck,latexrelease>
+%<*dircheck>
 %    \end{macrocode}
 %
 % Remove a final dot, added earlier.
diff --git a/Master/texmf-dist/source/latex-dev/base/ltexpl.dtx b/Master/texmf-dist/source/latex-dev/base/ltexpl.dtx
new file mode 100644
index 00000000000..92676a1298f
--- /dev/null
+++ b/Master/texmf-dist/source/latex-dev/base/ltexpl.dtx
@@ -0,0 +1,99 @@
+% \iffalse meta-comment
+%
+% Copyright (C) 2019
+% The LaTeX3 Project and any individual authors listed elsewhere
+% in this file.
+%
+% This file is part of the LaTeX base system.
+% -------------------------------------------
+%
+% It may be distributed and/or modified under the
+% conditions of the LaTeX Project Public License, either version 1.3c
+% of this license or (at your option) any later version.
+% The latest version of this license is in
+%    https://www.latex-project.org/lppl.txt
+% and version 1.3c or later is part of all distributions of LaTeX
+% version 2008 or later.
+%
+% This file has the LPPL maintenance status "maintained".
+%
+% The list of all files belonging to the LaTeX base distribution is
+% given in the file `manifest.txt'. See also `legal.txt' for additional
+% information.
+%
+% The list of derived (unpacked) files belonging to the distribution
+% and covered by LPPL is defined by the unpacking scripts (with
+% extension .ins) which are part of the distribution.
+%
+% \fi
+%
+% \iffalse
+%%% From File: ltexpl.dtx
+%
+%<*driver>
+% \fi
+\ProvidesFile{ltexpl.dtx}
+             [2019-10-02 v0.0 LaTeX Kernel (expl3-dependent code)]
+% \iffalse
+\documentclass{ltxdoc}
+\GetFileInfo{ltfinal.dtx}
+\title{\filename}
+\date{\filedate}
+\author{%
+  Joseph Wright}
+\begin{document}
+ \MaintainedByLaTeXTeam{latex}
+ \maketitle
+ \DocInput{ltfinal.dtx}
+\end{document}
+%</driver>
+% \fi
+%
+% \section{\pkg{expl3}-dependent code}
+%
+% \StopEventually{}
+%
+% \changes{v0.0}{2019-10-02}{Initial version}
+%
+%    \begin{macrocode}
+%<*2ekernel>
+%    \end{macrocode}
+%
+% \subsection{Loader}
+%
+%  Check for the required primitive/engine support and the existence of
+%  a loader.
+%    \begin{macrocode}
+%</2ekernel>
+%<*2ekernel|latexrelease>
+%<latexrelease>\IncludeInRelease{2020/02/01}%
+%<latexrelease>                 {expl3}{Pre-load expl3}%
+\IfFileExists{expl3.ltx}
+  {%
+    \ifnum0%
+      \ifdefined\pdffilesize 1\fi
+      \ifdefined\filesize 1\fi
+      \ifdefined\luatexversion\ifnum\luatexversion>94 1\fi\fi
+      >0 %
+    \else
+      \message{Skipping expl3-dependent extensions}
+%<2ekernel>      \expandafter\endinput
+%<latexrelease>      \expandafter\@gobbletwo
+    \fi
+  }
+  {%
+    \message{Skipping expl3-dependent extensions}%
+%<2ekernel>    \endinput
+%<latexrelease>    \@gobbletwo
+  }%
+\input{expl3.ltx}
+%</2ekernel|latexrelease>
+%<latexrelease>\EndIncludeInRelease
+%<*2ekernel>
+%    \end{macrocode}
+%
+%    \begin{macrocode}
+%</2ekernel>
+%    \end{macrocode}
+%
+% \Finale
diff --git a/Master/texmf-dist/source/latex-dev/base/ltfiles.dtx b/Master/texmf-dist/source/latex-dev/base/ltfiles.dtx
index afb085a4174..7c43abc079d 100644
--- a/Master/texmf-dist/source/latex-dev/base/ltfiles.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/ltfiles.dtx
@@ -32,7 +32,7 @@
 %<*driver>
 % \fi
 \ProvidesFile{ltfiles.dtx}
-             [2019/08/27 v1.2b LaTeX Kernel (File Handling)]
+             [2019/11/11 v1.2f LaTeX Kernel (File Handling)]
 % \iffalse
 \documentclass{ltxdoc}
 \GetFileInfo{ltfiles.dtx}
@@ -706,7 +706,16 @@
 %   A side effect of the new code is that we will see quotes around
 %   file name displays where there haven't been any before.
 %
+%   For compatibilty with existing code using |{abc}.tex| or |{one.two}.png|
+%   an initial brace group is discarded before expansion and |\string| is applied
+%   The content of the brace group is discarded. This means that a leading space
+%   will be lost unless protected (by |{ }| or |" "| or |\space|) but filenames
+%   with a space are hopefully rare.
+%
 %  \changes{v1.2a}{2019/07/01}{Support UTF-8}
+%  \changes{v1.2c}{2019/10/11}{Remove one brace group}
+%  \changes{v1.2d}{2019/10/26}{remove quotes}
+%  \changes{v1.2e}{2019/11/09}{expand and \cs{string} before removing quotes}
 %    \begin{macrocode}
 %</2ekernel>
 %<*2ekernel|latexrelease>
@@ -715,7 +724,11 @@
 \def\set@curr@file#1{%
   \begingroup
     \escapechar\m@ne
-    \xdef\@curr@file{\expandafter\string\csname #1\endcsname}%
+    \xdef\@curr@file{%
+      \expandafter\expandafter\expandafter\unquote@name
+      \expandafter\expandafter\expandafter{%
+      \expandafter\string
+        \csname\@firstofone#1\@empty\endcsname}}%
   \endgroup
 }
 %    \end{macrocode}
@@ -751,11 +764,11 @@
 %    
 % \changes{v1.2a}{2019/07/01}{Support UTF-8}
 % \changes{v1.2b}{2019/08/27}{Make command robust}
+% \changes{v1.2d}{2019/10/26}{dont quote name}
 %    \begin{macrocode}
 \DeclareRobustCommand\IfFileExists[1]{%
   \set@curr@file{#1}%
-  \edef\q@curr@file{\expandafter\quote@name\expandafter{\@curr@file}}%
-  \expandafter\IfFileExists@\expandafter{\q@curr@file}}
+  \expandafter\IfFileExists@\expandafter{\@curr@file}}
 %    \end{macrocode}
 %  \end{macro}
 %
@@ -763,10 +776,11 @@
 % \changes{v0.9b}{1993/12/04}{Macro added}
 % \changes{v0.9p}{1994/01/18}{New Definition}
 % \changes{v1.0t}{1995/05/25}{(CAR) added \cs{long}}
-%
+% \changes{v1.2d}{2019/10/26}{quote on openin}%
+% Argument |#1| is |\@curr@file| so catcode 12 string with no quotes.
 %    \begin{macrocode}
 \long\def \IfFileExists@#1#2#3{%
-  \openin\@inputcheck#1 %
+  \openin\@inputcheck"#1" %
   \ifeof\@inputcheck
     \ifx\input@path\@undefined
       \def\reserved@a{#3}%
@@ -775,13 +789,40 @@
     \fi
   \else
     \closein\@inputcheck
-    \edef\@filef@und{#1 }%
+    \edef\@filef@und{"#1" }%
     \def\reserved@a{#2}%
   \fi
   \reserved@a}
 %    \end{macrocode}
 %  \end{macro}
 %
+% \begin{macro}{\@iffileonpath}
+% If the file is not found by |\openin|, and |\input@path| is defined,
+% look in all the directories specified in |\input@path|.
+% \changes{v0.9p}{1994/01/18}{Macro added}
+% \changes{v1.0f}{1994/05/02}
+%     {\cs{@break@loop} renamed to \cs{@break@tfor}}
+% \changes{v1.0t}{1995/05/25}
+%         {(CAR) added \cs{long}}
+% \changes{v1.1d}{1996/01/10}
+%     {Change argument handling to not require doubled hash. latex/2024}
+% \changes{v1.2d}{2019/10/26}{quote on openin}%
+% \changes{v1.2f}{2019/11/11}{make \cs{@filef@und} match quoting used on \cs{openin}}%
+%    \begin{macrocode}
+\long\def\@iffileonpath#1{%
+  \let\reserved@a\@secondoftwo
+  \expandafter\@tfor\expandafter\reserved@b\expandafter
+             :\expandafter=\input@path\do{%
+    \openin\@inputcheck\expandafter\quote@name\expandafter{\reserved@b#1} %
+    \ifeof\@inputcheck\else
+      \edef\@filef@und{\expandafter\quote@name\expandafter{\reserved@b#1} }%
+      \let\reserved@a\@firstoftwo%
+      \closein\@inputcheck
+      \@break@tfor
+    \fi}%
+  \reserved@a}
+%    \end{macrocode}
+%  \end{macro}
 %
 %    \begin{macrocode}
 %</2ekernel|latexrelease>
@@ -811,37 +852,25 @@
 %<latexrelease>  \fi
 %<latexrelease>  \reserved@a}
 %<latexrelease>
+%<latexrelease>\long\def\@iffileonpath#1{%
+%<latexrelease>  \let\reserved@a\@secondoftwo
+%<latexrelease>  \expandafter\@tfor\expandafter\reserved@b\expandafter
+%<latexrelease>             :\expandafter=\input@path\do{%
+%<latexrelease>    \openin\@inputcheck\reserved@b#1 %
+%<latexrelease>    \ifeof\@inputcheck\else
+%<latexrelease>      \edef\@filef@und{\reserved@b#1 }%
+%<latexrelease>      \let\reserved@a\@firstoftwo%
+%<latexrelease>      \closein\@inputcheck
+%<latexrelease>      \@break@tfor
+%<latexrelease>    \fi}%
+%<latexrelease>  \reserved@a}
+%<latexrelease>
 %<latexrelease>\EndIncludeInRelease
 %<*2ekernel>
 %    \end{macrocode}
 %    
 %
 %
-% \begin{macro}{\@iffileonpath}
-% If the file is not found by |\openin|, and |\input@path| is defined,
-% look in all the directories specified in |\input@path|.
-% \changes{v0.9p}{1994/01/18}{Macro added}
-% \changes{v1.0f}{1994/05/02}
-%     {\cs{@break@loop} renamed to \cs{@break@tfor}}
-% \changes{v1.0t}{1995/05/25}
-%         {(CAR) added \cs{long}}
-% \changes{v1.1d}{1996/01/10}
-%     {Change argument handling to not require doubled hash. latex/2024}
-%    \begin{macrocode}
-\long\def\@iffileonpath#1{%
-  \let\reserved@a\@secondoftwo
-  \expandafter\@tfor\expandafter\reserved@b\expandafter
-             :\expandafter=\input@path\do{%
-    \openin\@inputcheck\reserved@b#1 %
-    \ifeof\@inputcheck\else
-      \edef\@filef@und{\reserved@b#1 }%
-      \let\reserved@a\@firstoftwo%
-      \closein\@inputcheck
-      \@break@tfor
-    \fi}%
-  \reserved@a}
-%    \end{macrocode}
-%  \end{macro}
 %
 % \begin{macro}{\InputIfFileExists}
 % \changes{v0.9b}
diff --git a/Master/texmf-dist/source/latex-dev/base/ltfinal.dtx b/Master/texmf-dist/source/latex-dev/base/ltfinal.dtx
index de161a777ea..f4f97ba0202 100644
--- a/Master/texmf-dist/source/latex-dev/base/ltfinal.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/ltfinal.dtx
@@ -33,7 +33,7 @@
 %<*driver>
 % \fi
 \ProvidesFile{ltfinal.dtx}
-             [2019/08/27 v2.1g LaTeX Kernel (Final Settings)]
+             [2019-10-02 v2.2 LaTeX Kernel (Final Settings)]
 % \iffalse
 \documentclass{ltxdoc}
 \GetFileInfo{ltfinal.dtx}
@@ -928,15 +928,28 @@
       \def\i{I}\def\j{J}%
       \def\reserved@a##1##2{\let##1##2\reserved@a}%
       \expandafter\reserved@a\@uclclist\reserved@b{\reserved@b\@gobble}%
+%    \end{macrocode}
+%    Tell UTF-8 processing to process chars even though we are in an \cs{protected@edef}.
+% \changes{v2.1h}{2019/09/14}{Expand UTF8 chrs when case changing (github/177)}
+%    \begin{macrocode}
+      \let\UTF@two@octets@noexpand\@empty
+      \let\UTF@three@octets@noexpand\@empty
+      \let\UTF@four@octets@noexpand\@empty
       \protected@edef\reserved@a{\uppercase{#1}}%
       \reserved@a
    }}
 \DeclareRobustCommand{\MakeLowercase}[1]{{%
       \def\reserved@a##1##2{\let##2##1\reserved@a}%
       \expandafter\reserved@a\@uclclist\reserved@b{\reserved@b\@gobble}%
+      \let\UTF@two@octets@noexpand\@empty
+      \let\UTF@three@octets@noexpand\@empty
+      \let\UTF@four@octets@noexpand\@empty
       \protected@edef\reserved@a{\lowercase{#1}}%
       \reserved@a
    }}
+%    \end{macrocode}
+%
+%    \begin{macrocode}
 \def\@uclclist{\oe\OE\o\O\ae\AE
       \dh\DH\dj\DJ\l\L\ng\NG\ss\SS\th\TH}
 %    \end{macrocode}
@@ -1031,6 +1044,14 @@
 %  }{}
 %    \end{macrocode}
 %
+% \subsection{Loading further extensions}
+%
+% \changes{v2.2}{2019-10-02}{Load \textsf{ltexpl}}
+% Simply load further code: it's deliberately separate
+%    \begin{macrocode}
+\input{ltexpl.ltx}
+%    \end{macrocode}
+%
 % \subsection{Freeing Memory}
 %
 % \begin{macro}{\reserved@a}
diff --git a/Master/texmf-dist/source/latex-dev/base/ltluatex.dtx b/Master/texmf-dist/source/latex-dev/base/ltluatex.dtx
index 5c2f30624d8..41f2344a373 100644
--- a/Master/texmf-dist/source/latex-dev/base/ltluatex.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/ltluatex.dtx
@@ -1,17 +1,21 @@
 % \iffalse meta-comment
 %
-% Copyright 2015 2017 2018
+% Copyright (C) 2015-2019
 % The LaTeX3 Project and any individual authors listed elsewhere
 % in this file.
 %
-% It may be distributed and/or modified under the conditions of
-% the LaTeX Project Public License (LPPL), either version 1.3c of
-% this license or (at your option) any later version.  The latest
-% version of this license is in the file:
-%
-%   https://www.latex-project.org/lppl.txt
+% This file is part of the LaTeX base system.
+% -------------------------------------------
 %
+% It may be distributed and/or modified under the
+% conditions of the LaTeX Project Public License, either version 1.3c
+% of this license or (at your option) any later version.
+% The latest version of this license is in
+%    https://www.latex-project.org/lppl.txt
+% and version 1.3c or later is part of all distributions of LaTeX
+% version 2008 or later.
 %
+% This file has the LPPL maintenance status "maintained".
 %
 %<2ekernel>%%% From File: ltluatex.dtx
 %<plain>\ifx\newluafunction\undefined\else\expandafter\endinput\fi
@@ -24,7 +28,7 @@
 \ProvidesFile{ltluatex.dtx}
 %</driver>
 %<*tex>
-[2018/10/21 v1.1i
+[2019/10/22 v1.1j
 %</tex>
 %<plain>  LuaTeX support for plain TeX (core)
 %<*tex>
@@ -1312,12 +1316,15 @@ local callbacktypes = callbacktypes or {
 % \changes{v1.0n}{2016/03/13}{contribute\_filter added}
 % \changes{v1.1h}{2018/08/18}{append\_to\_vlist\_filter is \texttt{exclusive}}
 % \changes{v1.1j}{2019/06/18}{new\_graf added}
+% \changes{v1.1k}{2019/10/02}{linebreak\_filter is \texttt{exclusive}}
+% \changes{v1.1k}{2019/10/02}{process\_rule is \texttt{exclusive}}
+% \changes{v1.1k}{2019/10/02}{mlist\_to\_hlist is \texttt{exclusive}}
 %    \begin{macrocode}
   contribute_filter      = simple,
   buildpage_filter       = simple,
   build_page_insert      = exclusive,
   pre_linebreak_filter   = list,
-  linebreak_filter       = list,
+  linebreak_filter       = exclusive,
   append_to_vlist_filter = exclusive,
   post_linebreak_filter  = list,
   hpack_filter           = list,
@@ -1325,12 +1332,12 @@ local callbacktypes = callbacktypes or {
   hpack_quality          = list,
   vpack_quality          = list,
   pre_output_filter      = list,
-  process_rule           = list,
+  process_rule           = exclusive,
   hyphenate              = simple,
   ligaturing             = simple,
   kerning                = simple,
   insert_local_par       = simple,
-  mlist_to_hlist         = list,
+  mlist_to_hlist         = exclusive,
   new_graf               = simple,
 %    \end{macrocode}
 % Section 8.5: information reporting callbacks.
@@ -1358,11 +1365,12 @@ local callbacktypes = callbacktypes or {
 % Section 8.6: PDF-related callbacks.
 % \changes{v1.1j}{2019/06/18}{page\_objnum\_provider added}
 % \changes{v1.1j}{2019/06/18}{process\_pdf\_image\_content added}
+% \changes{v1.1j}{2019/10/22}{page\_objnum\_provider and process\_pdf\_image\_content classified data}
 %    \begin{macrocode}
   finish_pdffile            = data,
   finish_pdfpage            = data,
-  page_objnum_provider      = simple,
-  process_pdf_image_content = simple,
+  page_objnum_provider      = data,
+  process_pdf_image_content = data,
 %    \end{macrocode}
 % Section 8.7: font-related callbacks.
 % \changes{v1.1e}{2017/03/28}{glyph\_stream\_provider added}
diff --git a/Master/texmf-dist/source/latex-dev/base/ltmiscen.dtx b/Master/texmf-dist/source/latex-dev/base/ltmiscen.dtx
index 8cd61207514..f60a4090b6b 100644
--- a/Master/texmf-dist/source/latex-dev/base/ltmiscen.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/ltmiscen.dtx
@@ -32,7 +32,7 @@
 %<*driver>
 % \fi
 \ProvidesFile{ltmiscen.dtx}
-             [2019/08/29 v1.1p LaTeX Kernel (Misc. Environments)]
+             [2019/11/02 v1.1s LaTeX Kernel (Misc. Environments)]
 % \iffalse
 \documentclass{ltxdoc}
 \GetFileInfo{ltmiscen.dtx}
@@ -370,17 +370,7 @@
 %    percent. The result is saved in \cs{@temptokena} for later use.
 % \changes{v1.1n}{2018/09/26}{Sometimes mask the endline char when
 %    writing to files (github/73)}
-%    \begin{macrocode}
-\begingroup
-\catcode`\%=12
-%    \end{macrocode}
-%    \texttt{latexrelease} will read this code in high-speed
-%    mode in certain situations. During that it will only look for
-%    \cs{if} tests but not actually execute the \cs{catcode} change
-%    above. As a result it will drop anything after the |%| character
-%    in the definition. Therefore the |\fi| needs to be on the next
-%    line and we need locally another comment character to avoid
-%    getting spaces into the definition---a weird problem :-)
+%
 %    \begin{macrocode}
 \catcode`\^^A=9 
 \long\gdef\add@percent@to@temptokena
@@ -390,13 +380,34 @@
 %   the beginning, so that in case the tokenlist consists of a single brace
 %   group the braces aren't stripped. The |\expandafter| then expands
 %   this extra token away again.
+% \changes{v1.1q}{2019/10/25}{Allow unbalanced conditionals in \texttt{\#1} (gh/202)}
+% \changes{v1.1r}{2019/11/10}{fix to special comment catcodes (gh/202)}
+%    \begin{macrocode}
+    {\expandafter\ifx\expandafter X\detokenize{#2}X\expandafter\dont@add@percent@to@temptokena\else
+             \expandafter\do@add@percent@to@temptokena\fi{#1}}
+%    \end{macrocode}
+%    
 %    \begin{macrocode}
-    {\ifx!#2!\@temptokena\expandafter{#1}\else
-             \@temptokena\expandafter{#1%^^A
+\long\def\dont@add@percent@to@temptokena#1{%
+  \@temptokena\expandafter{#1}}
+%    \end{macrocode}
+%    \texttt{latexrelease} will read this code in high-speed
+%    mode in certain situations. During that it will only look for
+%    \cs{if} tests but not actually execute the \cs{catcode} change
+%    above. As a result it will drop anything after the |%| character
+%    in the definition. Therefore the |\fi| needs to be on the next
+%    line and we need locally another comment character to avoid
+%    getting spaces into the definition---a weird problem :-)
+%    
+%    \begin{macrocode}
+\begingroup
+\catcode`\%=12
+\catcode`\^^A=14
+\long\gdef\do@add@percent@to@temptokena#1{\@temptokena\expandafter{#1%^^A
 %    \end{macrocode}
 %    Can't be on the same line as the |%| --- see above.
 %    \begin{macrocode}
-      }\fi}
+  }}
 \endgroup
 %    \end{macrocode}
 %  \end{macro}
@@ -432,6 +443,8 @@
 %<latexrelease>                 {\protected@file@percent}{Mask line endings}%
 %<latexrelease>\let\protected@file@percent\@undefined
 %<latexrelease>\let\add@percent@to@temptokena\@undefined
+%<latexrelease>\let\do@add@percent@to@temptokena\@undefined
+%<latexrelease>\let\dont@add@percent@to@temptokena\@undefined
 %<latexrelease>\long\def\@writefile#1#2{%
 %<latexrelease>  \@ifundefined{tf@#1}\relax
 %<latexrelease>    {\@temptokena{#2}%
@@ -693,9 +706,27 @@
 % \begin{macro}{\@centercr}
 % \changes{v1.0h}{1994/05/03}{\cs{@badcrerr} replaced by \cs{@nolnerr}}
 % \changes{v1.0z}{1995/07/13}{Use \cs{nobreak}}
+% \changes{v1.1s}{2019/11/02}{Make \cs{@centercr} robust (gh/203)}
 %    \begin{macrocode}
-\def\@centercr{\ifhmode \unskip\else \@nolnerr\fi
+%</2ekernel>
+%<*2ekernel|latexrelease>
+%<latexrelease>\IncludeInRelease{2020/02/01}%
+%<latexrelease>                 {\@centercr}{Make robust}%
+\protected\def\@centercr{\ifhmode \unskip\else \@nolnerr\fi
        \par\@ifstar{\nobreak\@xcentercr}\@xcentercr}
+%</2ekernel|latexrelease>
+%    \end{macrocode}
+%    
+%    \begin{macrocode}
+%<latexrelease>\EndIncludeInRelease
+%<latexrelease>\IncludeInRelease{0000/00/00}%
+%<latexrelease>                 {\@centercr}{Make robust}%
+%<latexrelease>
+%<latexrelease>\def\@centercr{\ifhmode \unskip\else \@nolnerr\fi
+%<latexrelease>       \par\@ifstar{\nobreak\@xcentercr}\@xcentercr}
+%<latexrelease>
+%<latexrelease>\EndIncludeInRelease
+%<*2ekernel>
 %    \end{macrocode}
 % \end{macro}
 %
diff --git a/Master/texmf-dist/source/latex-dev/base/ltsect.dtx b/Master/texmf-dist/source/latex-dev/base/ltsect.dtx
index 239d4c547fd..b4851f28e2c 100644
--- a/Master/texmf-dist/source/latex-dev/base/ltsect.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/ltsect.dtx
@@ -784,7 +784,7 @@
 \def\addcontentsline#1#2#3{%
   \addtocontents{#1}{\protect\contentsline{#2}{#3}{\thepage}%
 %    \end{macrocode}
-%    We add \cs{protected@file@percent} at the end which is turned om
+%    We add \cs{protected@file@percent} at the end which is turned inside
 %   \cs{@writefile} into a percent character to mask the newline after
 %   the closing argument brace.
 %    \begin{macrocode}
diff --git a/Master/texmf-dist/source/latex-dev/base/ltspace.dtx b/Master/texmf-dist/source/latex-dev/base/ltspace.dtx
index d840b13bbbe..2abc1a4f23f 100644
--- a/Master/texmf-dist/source/latex-dev/base/ltspace.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/ltspace.dtx
@@ -32,7 +32,7 @@
 %<*driver>
 % \fi
 \ProvidesFile{ltspace.dtx}
-             [2019/08/27 v1.3j LaTeX Kernel (spacing)]
+             [2019/11/02 v1.3k LaTeX Kernel (spacing)]
 % \iffalse
 \documentclass{ltxdoc}
 \GetFileInfo{ltspace.dtx}
@@ -393,15 +393,38 @@
 % so now it is explicitly robust, like |\\|.
 %  \begin{macro}{\@normalcr}
 % The internal definition of the `normal' definition of |\\|.
+% \changes{v1.3k}{2019/11/02}{Make also \cs{@normalcr} robust}
 %    \begin{macrocode}
-\DeclareRobustCommand\\{%
+%</2ekernel>
+%<*2ekernel|latexrelease>
+%<latexrelease>\IncludeInRelease{2020/02/01}%
+%<latexrelease>                 {\@normalcr}{Make robust}%
+\protected\def\@normalcr{%
   \let \reserved@e \relax
   \let \reserved@f \relax
   \@ifstar{\let \reserved@e \vadjust \let \reserved@f \nobreak
              \@xnewline}%
-          \@xnewline}
-\expandafter\let\expandafter\@normalcr
-     \csname\expandafter\@gobble\string\\ \endcsname
+  \@xnewline}
+%    \end{macrocode}
+%    
+%    \begin{macrocode}
+\let\\\@normalcr
+%</2ekernel|latexrelease>
+%<latexrelease>\EndIncludeInRelease
+%<latexrelease>\IncludeInRelease{0000/00/00}%
+%<latexrelease>                 {\@normalcr}{Make robust}%
+%<latexrelease>
+%<latexrelease>\DeclareRobustCommand\\{%
+%<latexrelease>   \let \reserved@e \relax
+%<latexrelease>   \let \reserved@f \relax
+%<latexrelease>   \@ifstar{\let \reserved@e \vadjust \let \reserved@f \nobreak
+%<latexrelease>             \@xnewline}%
+%<latexrelease>  \@xnewline}
+%<latexrelease>\expandafter\let\expandafter\@normalcr
+%<latexrelease>     \csname\expandafter\@gobble\string\\ \endcsname
+%<latexrelease>
+%<latexrelease>\EndIncludeInRelease
+%<*2ekernel>
 %    \end{macrocode}
 %  \end{macro}
 %  \end{macro}
diff --git a/Master/texmf-dist/source/latex-dev/base/lttab.dtx b/Master/texmf-dist/source/latex-dev/base/lttab.dtx
index 646015daf3d..aa2a00390fc 100644
--- a/Master/texmf-dist/source/latex-dev/base/lttab.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/lttab.dtx
@@ -31,7 +31,7 @@
 %%% From File: lttab.dtx
 %<*driver>
 % \fi
-\ProvidesFile{lttab.dtx}[2019/08/27 v1.1p LaTeX Kernel (Columns)]
+\ProvidesFile{lttab.dtx}[2019/10/07 v1.1q LaTeX Kernel (Columns)]
 % \iffalse
 \documentclass{ltxdoc}
 \GetFileInfo{lttab.dtx}
@@ -806,8 +806,12 @@
 %
 %
 % \begin{macro}{\extracolsep}
+%    This command needs to expand during the tabular preamble construction
+%    so can't be robust.
+%
+% \changes{v1.1q}{2019/10/07}{This needs to expand}
 %    \begin{macrocode}
-\DeclareRobustCommand\extracolsep[1]{\tabskip #1\relax}
+\def\extracolsep#1{\tabskip #1\relax}
 %    \end{macrocode}
 % \end{macro}
 %
diff --git a/Master/texmf-dist/source/latex-dev/base/ltvers.dtx b/Master/texmf-dist/source/latex-dev/base/ltvers.dtx
index 4a5cc5283bf..cb531ae0d2b 100644
--- a/Master/texmf-dist/source/latex-dev/base/ltvers.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/ltvers.dtx
@@ -112,10 +112,10 @@
 %</2ekernel>
 %<latexrelease>\edef\latexreleaseversion
 %<*2ekernel|latexrelease>
-   {2019-10-01}
+   {2020-02-01}
 %</2ekernel|latexrelease>
 %<*2ekernel>
-\def\patch@level{-3}
+\def\patch@level{-1}
 %    \end{macrocode}
 %    
 % \begin{macro}{\development@branch@name}
diff --git a/Master/texmf-dist/source/latex-dev/base/ltxdoc.dtx b/Master/texmf-dist/source/latex-dev/base/ltxdoc.dtx
index 21cc2d3dcfa..2d3e5aad2a6 100644
--- a/Master/texmf-dist/source/latex-dev/base/ltxdoc.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/ltxdoc.dtx
@@ -30,7 +30,7 @@
 %
 %<class>\NeedsTeXFormat{LaTeX2e}
 %<class>\ProvidesClass{ltxdoc}
-%<class>         [2018/03/15 v2.0x Standard LaTeX documentation class]
+%<class>         [2019/09/16 v2.0y Standard LaTeX documentation class]
 %
 %<*driver>
 \documentclass{ltxdoc}
@@ -356,6 +356,7 @@
 /endgroup%
 %    \end{macrocode}
 %
+% \changes{v2.0y}{2019/09/16}{Say that oldcomments may not be accurate (gh/180)}
 %    \begin{macrocode}
 \begingroup
   \catcode`\/=\catcode`\\
@@ -375,6 +376,7 @@
     /parindent/z@
     /ttfamily/expandafter/let/expandafter/oc@ttf/the/font
     /rmfamily
+    /textit{Historical /LaTeX/,2.09 comments (not necessarily accurate any more):}
     /hfuzz/maxdimen
     }
 /endgroup
@@ -388,6 +390,7 @@
     \ifvmode%
     \def\commentline{#1}%
     \ifx\commentline\oldc%
+    \textit{End of historical \LaTeX\,2.09 comments.}
     \end{oldcomments}%
     \else%
     \ifx\commentline\begmac%
diff --git a/Master/texmf-dist/source/latex-dev/base/ltxref.dtx b/Master/texmf-dist/source/latex-dev/base/ltxref.dtx
index 1d8c41c4397..27d32504137 100644
--- a/Master/texmf-dist/source/latex-dev/base/ltxref.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/ltxref.dtx
@@ -33,7 +33,7 @@
 %<*driver>
 % \fi
 \ProvidesFile{ltxref.dtx}
-             [2019/08/22 v1.1l LaTeX Kernel (Cross Referencing)]
+             [2019/09/16 v1.1m LaTeX Kernel (Cross Referencing)]
 % \iffalse
 \documentclass{ltxdoc}
 \GetFileInfo{ltxref.dtx}
@@ -377,6 +377,7 @@
 %
 %
 %
+%  \changes{v1.1m}{2019/09/16}{Correctly revert the \cs{p@...} change}
 %    \begin{macrocode}
 %</2ekernel|latexrelease>
 %<latexrelease>\EndIncludeInRelease
@@ -385,7 +386,7 @@
 %<latexrelease>
 %<latexrelease>\def\refstepcounter#1{\stepcounter{#1}%
 %<latexrelease>    \protected@edef\@currentlabel
-%<latexrelease>       {\csname p@#1\expandafter\endcsname\csname the#1\endcsname}%
+%<latexrelease>       {\csname p@#1\endcsname\csname the#1\endcsname}%
 %<latexrelease>}
 %<latexrelease>\let\labelformat\@undefined
 %<latexrelease>\let\Ref\@undefined
diff --git a/Master/texmf-dist/source/latex-dev/base/nfssfont.dtx b/Master/texmf-dist/source/latex-dev/base/nfssfont.dtx
index a77dfba7b3b..fc92f83451b 100644
--- a/Master/texmf-dist/source/latex-dev/base/nfssfont.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/nfssfont.dtx
@@ -26,8 +26,8 @@
 % extension .ins) which are part of the distribution.
 %
 % \fi
-\def\nfssfontfileversion{v2.2d}
-\def\nfssfontfiledate{2015/02/01}
+\def\nfssfontfileversion{v2.2e}
+\def\nfssfontfiledate{2019/10/12}
 
 %
 % \iffalse
@@ -258,6 +258,8 @@
    \string\help\space for help [ \string\table\space\string\bye\space]:}%
  \ifx\action\empty
    \expandafter\table\expandafter\bye
+ \else
+   \expandafter\action
  \fi
 }
 %    \end{macrocode}
diff --git a/Master/texmf-dist/source/latex-dev/base/utf8ienc.dtx b/Master/texmf-dist/source/latex-dev/base/utf8ienc.dtx
index ea377297a58..d8c41255b25 100644
--- a/Master/texmf-dist/source/latex-dev/base/utf8ienc.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/utf8ienc.dtx
@@ -216,7 +216,7 @@
 %<+ts1> \ProvidesFile{ts1enc.dfu}
 %<+x2>  \ProvidesFile{x2enc.dfu}
 %<+all> \ProvidesFile{utf8enc.dfu}
-%<-utf8-2018>   [2019/07/11 v1.2j UTF-8 support for inputenc]
+%<-utf8-2018>   [2019/11/14 v1.2k UTF-8 support for inputenc]
 %    \end{macrocode}
 %
 %    \begin{macrocode}
@@ -1789,14 +1789,15 @@
 %    (which is normally the case) they are then reconstructed as
 %    ligatures so they come out as desired. Otherwise they will come
 %    out as individual characters which is fine too.
-% \changes{v1.2j}{2019/07/11}{Add typical f-ligatures and st (github/154)}
+% \changes{v1.2j}{2019/07/11}{Add typical f-ligatures and s-ligatures and st (github/154)}
+% \changes{v1.kj}{2019/11/14}{Fixed setting for FB05 = long-s t lig (github/154)}
 %    \begin{macrocode}
 %<all,t1,ot1,ly1,t2a,t2b,t2c>\DeclareUnicodeCharacter{FB00}{ff}   % ff
 %<all,t1,ot1,ly1,t2a,t2b,t2c>\DeclareUnicodeCharacter{FB01}{fi}   % fi
 %<all,t1,ot1,ly1,t2a,t2b,t2c>\DeclareUnicodeCharacter{FB02}{fl}   % fl
 %<all,t1,ot1,ly1,t2a,t2b,t2c>\DeclareUnicodeCharacter{FB03}{ffi}  % ffi
 %<all,t1,ot1,ly1,t2a,t2b,t2c>\DeclareUnicodeCharacter{FB04}{ffl}  % ffl
-%<all,t1,ot1,ly1,t2a,t2b,t2c>\DeclareUnicodeCharacter{FB05}{ft}   % ſt
+%<all,t1,ot1,ly1,t2a,t2b,t2c>\DeclareUnicodeCharacter{FB05}{st}   % ſt  -- this is the long s (not f)
 %<all,t1,ot1,ly1,t2a,t2b,t2c>\DeclareUnicodeCharacter{FB06}{st}   % st
 %    \end{macrocode}
 %
diff --git a/Master/texmf-dist/source/latex-dev/graphics/graphics.dtx b/Master/texmf-dist/source/latex-dev/graphics/graphics.dtx
index f2471e94bbb..ac570c02278 100644
--- a/Master/texmf-dist/source/latex-dev/graphics/graphics.dtx
+++ b/Master/texmf-dist/source/latex-dev/graphics/graphics.dtx
@@ -25,7 +25,7 @@
 %<driver> \ProvidesFile{graphics.drv}
 % \fi
 %         \ProvidesFile{graphics.dtx}
-          [2019/07/20 v1.3b  Standard LaTeX Graphics (DPC,SPQR)]
+          [2019/11/01 v1.3d  Standard LaTeX Graphics (DPC,SPQR)]
 %
 % \iffalse
 %<*driver>
@@ -1036,13 +1036,52 @@
 % \begin{macro}{\Gin@sepdefault}
 % \changes{v0.6a}{1994/11/29}
 %     {remove \cs{Gin@sep}}
+% \begin{macro}{\Gin@gzext}
+% \changes{v1.3d}{2019/11/01}
+%     {macro added}
 % This must match the token used by |\filename@parse| to delimit the
 % extension.
 %    \begin{macrocode}
 \def\Gin@sepdefault{.}
 %    \end{macrocode}
+%
+%    \begin{macrocode}
+\edef\Gin@gzext{\detokenize{gz}}
+%    \edef{macrocode}
 % \end{macro}
 %
+% \begin{macro}{\set@curr@file}
+% \begin{macro}{\quote@name}
+% \changes{v1.3c}{2019/10/08}
+%     {Definitions added for old formats}
+%    \begin{macrocode}
+\def\Gin@temp#1{%
+  \begingroup
+    \escapechar\m@ne
+    \xdef\@curr@file{\expandafter\string\csname #1\endcsname}%
+  \endgroup
+}
+\ifx\set@curr@file\@Gin@temp
+  \let\set@curr@file\@undefined
+\fi
+%    \end{macrocode}
+%
+%    \begin{macrocode}
+\ifx\set@curr@file\@undefined
+\def\set@curr@file#1{%
+  \begingroup
+    \escapechar\m@ne
+    \xdef\@curr@file{\expandafter\string\csname\@firstofone#1\@empty\endcsname}%
+  \endgroup
+}
+\def\quote@name#1{"\quote@@name#1\@gobble""}
+\def\quote@@name#1"{#1\quote@@name}
+\def\unquote@name#1{\quote@@name#1\@gobble"}
+\fi
+%    \end{macrocode}
+% \end{macro}
+% \end{macro}
+% 
 % \begin{macro}{\Ginclude@graphics}
 %  The main internal function implementing graphics file inclusion.
 %  |#1| is the file name.
@@ -1069,12 +1108,23 @@
   \let\input@path\Ginput@path
 %    \end{macrocode}
 %    A lot of quote juggling going on here (room for improvements).
+%
+% \changes{v1.3d}{2019/11/01}
+%     {\cs{curr@name} now unquoted}
 %    \begin{macrocode}
   \set@curr@file{#1}%
-  \edef\uq@curr@file{\expandafter\unquote@name\expandafter{\@curr@file}}%
-  \expandafter\filename@parse\expandafter{\uq@curr@file}%
-  \edef\filename@area{\expandafter\quote@name\expandafter{\filename@area}}%
-  \edef\filename@base{\expandafter\quote@name\expandafter{\filename@base}}%
+  \expandafter\filename@parse\expandafter{\@curr@file}%
+%    \end{macrocode}
+% If extension is |.gz| tack on to previous extension, eg |.eps.gz| if available.
+%    \begin{macrocode}
+  \ifx\filename@ext\Gin@gzext
+    \expandafter\filename@parse\expandafter{\filename@base}%
+    \ifx\filename@ext\relax
+      \let\filename@ext\Gin@gzext
+    \else
+      \edef\Gin@ext{\Gin@ext\Gin@sepdefault\Gin@gzext}%
+    \fi
+  \fi
   \ifx\filename@ext\relax
     \@for\Gin@temp:=\Gin@extensions\do{%
       \ifx\Gin@ext\relax
@@ -1083,6 +1133,34 @@
   \else
     \Gin@getbase{\Gin@sepdefault\filename@ext}%
 %    \end{macrocode}
+% At this point try adding an extension, even if the filename has one so
+% that \verb|a.b| may find \verb|a.b.png| if no file is found then revert
+% to the extension as given to get better error reporting.
+%
+% \changes{v1.3d}{2019/11/01}
+%     {Try adding an extension even if the filenam had a dot.}
+%    \begin{macrocode}
+\ifx\Gin@ext\relax
+\let\Gin@savedbase\filename@base
+\let\Gin@savedext\filename@ext
+  \edef\filename@base{\filename@base\Gin@sepdefault\filename@ext}%
+  \let\filename@ext\relax
+   \@for\Gin@temp:=\Gin@extensions\do{%
+      \ifx\Gin@ext\relax
+        \Gin@getbase\Gin@temp
+      \fi}%
+%    \end{macrocode}
+% Restore if no file found using theknown extensions.
+%    \begin{macrocode}
+  \ifx\Gin@ext\relax
+    \let\filename@base\Gin@savedbase
+    \let\filename@ext\Gin@savedext
+  \fi
+\fi
+%    \end{macrocode}
+%
+%    \begin{macrocode}
+%    \end{macrocode}
 % \changes{v0.4d}{1994/05/06}
 %     {Make file not found a warning not an error}
 % \changes{v0.6a}{1994/11/29}
diff --git a/Master/texmf-dist/source/latex-dev/tools/multicol.dtx b/Master/texmf-dist/source/latex-dev/tools/multicol.dtx
index d68f471fcd4..3a9f14927a6 100644
--- a/Master/texmf-dist/source/latex-dev/tools/multicol.dtx
+++ b/Master/texmf-dist/source/latex-dev/tools/multicol.dtx
@@ -98,7 +98,7 @@
 %<driver> \ProvidesFile{multicol.drv}
 % \fi
 %         \ProvidesFile{multicol.dtx}
-          [2019/03/01 v1.8w  multicolumn formatting (FMi)]
+          [2019/10/15 v1.8x  multicolumn formatting (FMi)]
 %
 %
 %%
@@ -134,7 +134,7 @@
 % \DoNotIndex{\hbox,\hfil,\hrule,\ht,\hss}
 % \DoNotIndex{\ifdim,\ifnum,\ifvoid,\ignorespaces,\insert,\immediate}
 % \DoNotIndex{\let,\loop}
-% \DoNotIndex{\maxdepth,\message,\multiply}
+% \DoNotIndex{\@maxdepth,\message,\multiply}
 % \DoNotIndex{\newbox,\newcount,\newdimen,\newskip,\number,\newpage}
 % \DoNotIndex{\outputpenalty,\p@,\penalty}
 % \DoNotIndex{\relax,\repeat,\setbox,\skip,\space,\splitmaxdepth}
@@ -978,9 +978,10 @@
 %    grid. Right now it doesn't do anything other than warning if it
 %    thinks that the grid got lost.
 % \changes{v1.6a}{2003/03/15}{New option grid}
+% \changes{v1.8x}{2019/10/15}{Use \cs{@maxdepth} not \cs{maxdepth} (gh/190)}
 %    \begin{macrocode}
 \let\mc@gridwarn\maxdimen
-\DeclareOption{grid}{\def\mc@gridwarn{\maxdepth}}
+\DeclareOption{grid}{\def\mc@gridwarn{\@maxdepth}}
 %    \end{macrocode}
 %
 % \changes{v1.8e}{2014/04/23}{Support \cs{docolaction}}
@@ -2143,7 +2144,7 @@
 %    However, in case one of the columns was unusually deep \TeX{} may
 %    have tried some corrective actions in which case backing up by
 %    the saved value will not bring us back to the baseline. A good
-%    indication for this is a depth of |\maxdepth| though it is not an
+%    indication for this is a depth of |\@maxdepth| though it is not an
 %    absolute proof. If the option \texttt{grid} is used
 %    |\mc@gridwarn| will expand to this, otherwise to |\maxdimen| in
 %    which case this warning will not show up.
@@ -2192,15 +2193,16 @@
 %   |\vfill| in that case but this is actually wrong for columns that
 %   are more or less full: by adding a glue at the bottom such a
 %   column doesn't have any depth any more but without it the material
-%   would be allowed a depth of |\maxdepth|. So we allow shrinking by
+%   would be allowed a depth of |\@maxdepth|. So we allow shrinking by
 %   that amount. This only makes a difference if the box would
 %   otherwise become overfull and shrinking never exceeds the
 %   specified value, so we should be fine. 
 % \changes{v1.8h}{2014/09/12}{Macro added  (pr/4395)}
 % \changes{v1.8j}{2015/03/07}{Use only `0.0001fil' for stretching}
+% \changes{v1.8x}{2019/10/15}{Use \cs{@maxdepth} not \cs{maxdepth} (gh/190)}
 %    \begin{macrocode}
 \def\vfilmaxdepth{\vskip \z@ \@plus .0001fil 
-                           \@minus \maxdepth}
+                           \@minus \@maxdepth}
 %    \end{macrocode}
 % \end{macro}
 %
@@ -2246,13 +2248,13 @@
 %    appropriate values to |\splittopskip| and |\splitmaxdepth|.
 %    \begin{macrocode}
    \splittopskip\topskip
-   \splitmaxdepth\maxdepth
+   \splitmaxdepth\@maxdepth
 %    \end{macrocode}
 %    We also need to restrict |\boxmaxdepth| so that re-boxing is not
 %    generating boxes with arbitrary depth.   
 % \changes{v1.8j}{2015/03/07}{Set \cs{boxmaxdepth}}
 %    \begin{macrocode}
-   \boxmaxdepth\maxdepth
+   \boxmaxdepth\@maxdepth
 %    \end{macrocode}
 %    Then we calculate the current column height (in |\dimen@|).
 %    Note that the height of |\partial@page| is already
@@ -2585,7 +2587,7 @@
 %   e.g., after a display environment (if LaTeX would break here by
 %   its own it would break before the space following the display).
 %
-%   Thus we rebox box 255 once (using |\maxdepth| and calling
+%   Thus we rebox box 255 once (using |\@maxdepth| and calling
 %   |\remove@discardable@items| inside). The depth of 255 will then
 %   give us the depth the box would have had if it would have been a
 %   natural break. We then unbox 255 to get it into the
@@ -2594,8 +2596,9 @@
 %   balancing later on.
 % \changes{v1.8k}{2015/03/21}{Remove discardable items just before a
 %   forced break}
+% \changes{v1.8x}{2019/10/15}{Use \cs{@maxdepth} not \cs{maxdepth} (gh/190)}
 %    \begin{macrocode}
-              \boxmaxdepth\maxdepth
+              \boxmaxdepth\@maxdepth
               \setbox\@cclv\vbox{%
                  \unvbox\@cclv
                  \remove@discardable@items}%
@@ -2879,12 +2882,13 @@
 %    |\splittopskip| and allow for a bit of undershoot and overshoot
 %    by adding some stretch and shrink.
 % \changes{v1.5?}{1994/?/?}{Allow columns to come out a bit long or short}
+% \changes{v1.8x}{2019/10/15}{Use \cs{@maxdepth} not \cs{maxdepth} (gh/190)}
 %    \begin{macrocode}
    \@tempdima\topskip
    \splittopskip\@tempdima
        \@plus\multicolundershoot
        \@minus\multicolovershoot
-   \splitmaxdepth\maxdepth
+   \splitmaxdepth\@maxdepth
 %    \end{macrocode}
 %   We also have to set |\boxmaxdepth| which normally allows to
 %   build boxes with arbitrary depth, but as we are building text
@@ -2893,8 +2897,9 @@
 %   restriction posed by |\splitmaxdepth|  gets lost.
 % \changes{v1.8h}{2014/09/12}{All column boxes should obey
 %   \cs{maxdepth}  (pr/4395)}
+% \changes{v1.8x}{2019/10/15}{Use \cs{@maxdepth} not \cs{maxdepth} (gh/190)}
 %    \begin{macrocode}
-   \boxmaxdepth\maxdepth
+   \boxmaxdepth\@maxdepth
 %    \end{macrocode}
 %    The next step is a bit tricky: when \TeX{} assembles material in
 %    a box, the first line isn't preceded by interline glue, i.e.
diff --git a/Master/texmf-dist/source/latex-dev/tools/shellesc.dtx b/Master/texmf-dist/source/latex-dev/tools/shellesc.dtx
index 061ea4457ca..9706c5aa032 100644
--- a/Master/texmf-dist/source/latex-dev/tools/shellesc.dtx
+++ b/Master/texmf-dist/source/latex-dev/tools/shellesc.dtx
@@ -20,7 +20,7 @@
 %<driver> \ProvidesFile{shellesc.drv}
 % \fi
 %         \ProvidesFile{shellesc.dtx}
-       [2016/06/07 v0.02b unified shell escape interface for LaTeX]
+       [2019/11/08 v1.0c unified shell escape interface for LaTeX]
 %
 % \iffalse
 %<*driver>
@@ -36,10 +36,15 @@
 % \title{The \textsf{shellesc} Package\thanks{This file
 %        has version number \fileversion, last
 %        revised \filedate.}}
-% \author{LaTeX3 project}
+% \author{\LaTeX3 project}
 % \date{\filedate}
+%
+%
 % \maketitle
 %
+% \vspace*{-\baselineskip}
+% \enlargethispage{\baselineskip}
+%
 % \changes{v0.1b}{2016/02/02}{Doc typo fixes (JB)}
 % \changes{v0.2a}{2016/06/07}{Improve use with plain TeX}
 % \section{Introduction}
@@ -57,7 +62,7 @@
 % so a command to remove a file on a unix-like system could be
 % specified  using \verb|\ShellEscape{rm file.txt}| (or \verb|del| in
 % windows). Note that by default system access is not allowed and
-% latex will typically need to be called with the \verb|--shell-escape|
+% \LaTeX\ will typically need to be called with the \verb|--shell-escape|
 % command line option.
 %
 % The package may be used with standard \texttt{latex} or
@@ -76,6 +81,9 @@
 % (\verb|\latelua|). This package provides \verb|\DelayedShellEscape|
 % as a common syntax for this use.
 %
+% The shell escape status may be queried by checking the integer (chardef)
+% command \verb|\ShellEscapeStatus|, 0 (disabled) 1 (enabled) 2 (restricted).
+%
 % To aid porting existing documents to Lua\TeX~0.87 this package does
 % overload the \verb|\write| command so that
 % \verb|\write18{rm file.txt}|
@@ -95,12 +103,25 @@
 %<*package>
 %    \end{macrocode}
 %
+% \changes{v1.0b}{2019/10/17}{Catcode protection}
+%    \begin{macrocode}
+\chardef\shellesc@quotecat\catcode`\"
+\chardef\shellesc@underscorecat\catcode`\_
+\@makeother\"
+\@makeother\_
+%    \end{macrocode}
+%
 % \subsection{Status Check}
 %
 %
-% \changes{v0.2a}{2016/06/07}{spelling in messages}
+% \subsection{The shellesc package interface}
+%
+% \begin{macro}{\ShellEscapeStatus}
+% \changes{v1.0a}{2019/10/13}{Command Introduced}
+% Integer value with meanings 0 (shell escape disabled), 1 (shell escape allowed), 2 (Restricted shell escape).
+%
 %    \begin{macrocode}
-\ifcase
+\chardef\ShellEscapeStatus
   \ifx\pdfshellescape\@undefined
     \ifx\shellescape\@undefined
       \ifx\directlua\@undefined
@@ -115,6 +136,12 @@
   \else
     \pdfshellescape
   \fi
+%    \end{macrocode}
+% \end{macro}
+%
+% \changes{v0.2a}{2016/06/07}{spelling in messages}
+%    \begin{macrocode}
+\ifcase\ShellEscapeStatus
   \PackageWarning{shellesc}{Shell escape disabled}
 \or
   \PackageInfo   {shellesc}{Unrestricted shell escape enabled}
@@ -123,9 +150,9 @@
 \fi
 %    \end{macrocode}
 %
-% \subsection{The shellesc package interface}
 %
 % \begin{macro}{\ShellEscape}
+% \changes{v1.0a}{2019/10/13}{Lua logging for gh/195}
 % Execute the supplied tokens as a system dependent command, assuming 
 % such execution is allowed.
 %    \begin{macrocode}
@@ -135,14 +162,14 @@
 %
 %    \begin{macrocode}
 \else
-  \protected\def\ShellEscape#1{%
-    \directlua{os.execute("\luaescapestring{#1}")}}
+  \protected\def\ShellEscape{\directlua\ShellEscape@Lua}
 \fi
 %    \end{macrocode}
 % \end{macro}
 %
 % \begin{macro}{\DelayedShellEscape}
 % \changes{v0.1c}{2016/04/29}{Define \cs{DelayedShellEscape} not \cs{ShellEscape}(UF)}
+% \changes{v1.0a}{2019/10/13}{Lua logging for gh/195}
 % Execute the supplied tokens as a system dependent command, when this
 % node is shipped out with the completed page, assuming 
 % such execution is allowed.
@@ -153,14 +180,38 @@
 %
 %    \begin{macrocode}
 \else
-  \protected\def\DelayedShellEscape#1{%
-    \latelua{os.execute("\luaescapestring{#1}")}}
+  \protected\def\DelayedShellEscape{\latelua\ShellEscape@Lua}
 \fi
 %    \end{macrocode}
 % \end{macro}
 %
 %
 %
+% \begin{macro}{\ShellEscape@Lua}
+% \changes{v1.0a}{2019/10/13}{loging for gh/195}
+% Shared Lua code for \verb|\DelayedShellEscape| and \verb|\ShellEscape|.
+%    \begin{macrocode}
+\ifx\directlua\@undefined\else
+\protected\def\ShellEscape@Lua#1{{%
+local status, msg = os.execute("\luaescapestring{#1}")%
+if status == nil then
+    texio.write_nl("log",%
+      "runsystem(" .. "\luaescapestring{#1}"%
+       .. ")...(" .. msg .. ")\string\n")
+  elseif status == 0 then
+    texio.write_nl("log",%
+      "runsystem(" .. "\luaescapestring{#1}"%
+      .. ")...executed\string\n")
+  else
+    texio.write_nl("log",%
+      "runsystem(" .. "\luaescapestring{#1}"%
+       .. ")...failed " .. (msg or "") .. "\string\n")
+  end
+}}
+\fi
+%    \end{macrocode}
+% \end{macro}
+%
 % \subsection{The write18 package interface}
 %
 % In web2c based engines other than Lua\TeX, |\write18| may be used
@@ -189,7 +240,11 @@
 %
 % Stop at this point if not a recent Lua\TeX.
 %    \begin{macrocode}
-\ifx\lastsavedimageresourcepages\@undefined\expandafter\endinput\fi
+\ifx\lastsavedimageresourcepages\@undefined
+ \catcode`\"\shellesc@quotecat
+ \catcode`\_\shellesc@underscorecat
+ \expandafter\endinput
+\fi
 %    \end{macrocode}
 %
 %    \begin{macrocode}
@@ -233,7 +288,10 @@ shellesc.write_or_execute=write_or_execute
 \protected\def\write{\directlua{shellesc.write_or_execute()}}
 %    \end{macrocode}
 %
-%
+%    \begin{macrocode}
+\catcode`\"\shellesc@quotecat
+\catcode`\_\shellesc@underscorecat
+%    \end{macrocode}
 %
 %    \begin{macrocode}
 %</package>
diff --git a/Master/texmf-dist/source/latex-dev/tools/varioref.dtx b/Master/texmf-dist/source/latex-dev/tools/varioref.dtx
index 049bd0d55ea..b8392c76f27 100644
--- a/Master/texmf-dist/source/latex-dev/tools/varioref.dtx
+++ b/Master/texmf-dist/source/latex-dev/tools/varioref.dtx
@@ -40,7 +40,7 @@
 %<package>\DeclareCurrentRelease{}{2019-10-01}
 %<package>
 %<package>\ProvidesPackage{varioref}
-%<package>    [2019/09/08 v1.6b package for extended references (FMi)]
+%<package>    [2019/11/05 v1.6c package for extended references (FMi)]
 % \fi
 %
 %%
@@ -730,7 +730,7 @@
 %    workflow uses pdf\TeX{} the Arabic letters can't be displayed
 %    easily, so you will see missing glyphs below. To see the real
 %    letters you have to look at the source or package file.
-% \changes{v1.6b}{2019/09/8}{Option arabic added}
+% \changes{v1.6b}{2019/09/08}{Option arabic added}
 % \begin{allowtofu}  
 %    \begin{macrocode}
 \DeclareOption{arabic}
@@ -1642,16 +1642,21 @@
 % \end{macro}
 %
 % \begin{macro}{\vref@space}
+% \begin{macro}{\vref@maybe@space}
 % \changes{v1.4a}{2002/03/06}{Default added}
 %    A default for |\vref@space|. This isn't really needed except in
 %    the case that somebody has hooked into the \pkg{varioref}
 %    interfaces at a lower level (which isn't really supported,
 %    but\ldots). So giving a default will prevent an error message in
 %    that case (and should hopefully produce the same behavior as before).
+% \changes{v1.6c}{2019/11/05}{Support (mis)use of internal interface by
+%                             fancyref (sx/515106)}
 %    \begin{macrocode}
 \let\vref@space\space
+\let\vref@maybe@space\space
 %    \end{macrocode}
 % \end{macro}
+% \end{macro}
 %
 % \begin{macro}{\@vpageref}
 %    More parsing\ldots
diff --git a/Master/texmf-dist/source/latex-dev/tools/verbatim.dtx b/Master/texmf-dist/source/latex-dev/tools/verbatim.dtx
index 1dc8682f798..b89bab7759e 100644
--- a/Master/texmf-dist/source/latex-dev/tools/verbatim.dtx
+++ b/Master/texmf-dist/source/latex-dev/tools/verbatim.dtx
@@ -503,7 +503,7 @@
 %<*package>
 \NeedsTeXFormat{LaTeX2e}
 \ProvidesPackage{verbatim}
-     [2014/10/28 v1.5q LaTeX2e package for verbatim enhancements]
+     [2019/11/10 v1.5r LaTeX2e package for verbatim enhancements]
 \@ifundefined{verbatim@@@}{}{\endinput}
 %    \end{macrocode}
 %
@@ -826,7 +826,13 @@
 %    \end{macrocode}
 %    |\verbatim*| is defined accordingly.
 %    \begin{macrocode}
-\@namedef{verbatim*}{\begingroup\@verbatim\verbatim@start}
+\@namedef{verbatim*}{\begingroup\@verbatim
+%    \end{macrocode}
+%    
+% \changes{v1.5r}{2019/11/10}{Support kernel \cs{verbvisiblespace} (gh/212)}
+%    \begin{macrocode}
+  \@setupverbvisiblespace\@vobeyspaces
+  \verbatim@start}
 %    \end{macrocode}
 % \end{macro}
 % \end{macro}
diff --git a/Master/texmf-dist/source/latex-dev/tools/xr.dtx b/Master/texmf-dist/source/latex-dev/tools/xr.dtx
index 417a98c1c1e..97c4c68084e 100644
--- a/Master/texmf-dist/source/latex-dev/tools/xr.dtx
+++ b/Master/texmf-dist/source/latex-dev/tools/xr.dtx
@@ -86,7 +86,7 @@
 %
 % As first suggested in Enrico Gregorio's |xcite| package, the current version
 % also allows |\cite| to reference |\bibitem| in the external document.
-% For fcompatibility with |xcite|, |\externalcitedocument| is made available 
+% For compatibility with |xcite|, |\externalcitedocument| is made available 
 % as an alias for |\externaldocument|
 %
 % \StopEventually{}