l3kernel (7may19)

git-svn-id: svn://tug.org/texlive/trunk@51037 c570f23f-e606-0410-a88d-b1316a301751

80 files changed, 171 insertions, 194 deletions

diff --git a/Master/texmf-dist/doc/latex/l3kernel/CHANGELOG.md b/Master/texmf-dist/doc/latex/l3kernel/CHANGELOG.md
index 099a1fcd1b3..d09efb4b54f 100644
--- a/Master/texmf-dist/doc/latex/l3kernel/CHANGELOG.md
+++ b/Master/texmf-dist/doc/latex/l3kernel/CHANGELOG.md
@@ -7,6 +7,17 @@ this project uses date-based 'snapshot' version identifiers.
 
 ## [Unreleased]
 
+## [2019-05-07]
+
+### Added
+
+- `.muskip:N` property
+
+### Changed
+
+- Experimental `\driver_pdf_compress_objects:n` replaces
+  `\driver_pdf_objects_(en|dis)able:`
+
 ## [2019-05-05]
 
 ### Added
@@ -385,7 +396,8 @@ 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/2019-05-05...HEAD
+[Unreleased]: https://github.com/latex3/latex3/compare/2019-05-07...HEAD
+[2019-05-07]: https://github.com/latex3/latex3/compare/2019-05-05...2019-05-07
 [2019-05-05]: https://github.com/latex3/latex3/compare/2019-05-03...2019-05-05
 [2019-05-03]: https://github.com/latex3/latex3/compare/2019-04-21...2019-05-03
 [2019-04-21]: https://github.com/latex3/latex3/compare/2019-04-06...2019-04-21
diff --git a/Master/texmf-dist/doc/latex/l3kernel/README.md b/Master/texmf-dist/doc/latex/l3kernel/README.md
index eeeb9442b3e..c1758199134 100644
--- a/Master/texmf-dist/doc/latex/l3kernel/README.md
+++ b/Master/texmf-dist/doc/latex/l3kernel/README.md
@@ -1,7 +1,7 @@
 LaTeX3 Programming Conventions
 ==============================
 
-Release 2019-05-05
+Release 2019-05-07
 
 Overview
 --------
diff --git a/Master/texmf-dist/doc/latex/l3kernel/expl3.pdf b/Master/texmf-dist/doc/latex/l3kernel/expl3.pdf
index f7e6067076c..cd428ad7b74 100644
--- a/Master/texmf-dist/doc/latex/l3kernel/expl3.pdf
+++ b/Master/texmf-dist/doc/latex/l3kernel/expl3.pdf
diff --git a/Master/texmf-dist/doc/latex/l3kernel/interface3.pdf b/Master/texmf-dist/doc/latex/l3kernel/interface3.pdf
index abf301b6327..0b99e50a6bc 100644
--- a/Master/texmf-dist/doc/latex/l3kernel/interface3.pdf
+++ b/Master/texmf-dist/doc/latex/l3kernel/interface3.pdf
diff --git a/Master/texmf-dist/doc/latex/l3kernel/interface3.tex b/Master/texmf-dist/doc/latex/l3kernel/interface3.tex
index 8d868a5d017..d0cee5124dd 100644
--- a/Master/texmf-dist/doc/latex/l3kernel/interface3.tex
+++ b/Master/texmf-dist/doc/latex/l3kernel/interface3.tex
@@ -54,7 +54,7 @@ for those people who are interested.
          {latex-team@latex-project.org}%
    }%
 }
-\date{Released 2019-05-05}
+\date{Released 2019-05-07}
 
 \pagenumbering{roman}
 \maketitle
diff --git a/Master/texmf-dist/doc/latex/l3kernel/l3docstrip.pdf b/Master/texmf-dist/doc/latex/l3kernel/l3docstrip.pdf
index b1c49ba9526..59e4ccdb67d 100644
--- a/Master/texmf-dist/doc/latex/l3kernel/l3docstrip.pdf
+++ b/Master/texmf-dist/doc/latex/l3kernel/l3docstrip.pdf
diff --git a/Master/texmf-dist/doc/latex/l3kernel/l3styleguide.pdf b/Master/texmf-dist/doc/latex/l3kernel/l3styleguide.pdf
index 7a7b24c8c1c..1e86c317208 100644
--- a/Master/texmf-dist/doc/latex/l3kernel/l3styleguide.pdf
+++ b/Master/texmf-dist/doc/latex/l3kernel/l3styleguide.pdf
diff --git a/Master/texmf-dist/doc/latex/l3kernel/l3styleguide.tex b/Master/texmf-dist/doc/latex/l3kernel/l3styleguide.tex
index 40aaeb4d92c..5b4843f2264 100644
--- a/Master/texmf-dist/doc/latex/l3kernel/l3styleguide.tex
+++ b/Master/texmf-dist/doc/latex/l3kernel/l3styleguide.tex
@@ -32,7 +32,7 @@ The released version of this bundle is available from CTAN.
         {latex-team@latex-project.org}%
     }%
 }
-\date{Released 2019-05-05}
+\date{Released 2019-05-07}
 
 \begin{document}
 
diff --git a/Master/texmf-dist/doc/latex/l3kernel/l3syntax-changes.pdf b/Master/texmf-dist/doc/latex/l3kernel/l3syntax-changes.pdf
index e98f7c07f3e..e182c17d145 100644
--- a/Master/texmf-dist/doc/latex/l3kernel/l3syntax-changes.pdf
+++ b/Master/texmf-dist/doc/latex/l3kernel/l3syntax-changes.pdf
diff --git a/Master/texmf-dist/doc/latex/l3kernel/l3syntax-changes.tex b/Master/texmf-dist/doc/latex/l3kernel/l3syntax-changes.tex
index c7e3fda8794..ea0330009d3 100644
--- a/Master/texmf-dist/doc/latex/l3kernel/l3syntax-changes.tex
+++ b/Master/texmf-dist/doc/latex/l3kernel/l3syntax-changes.tex
@@ -32,7 +32,7 @@ The released version of this bundle is available from CTAN.
         {latex-team@latex-project.org}%
     }%
 }
-\date{Released 2019-05-05}
+\date{Released 2019-05-07}
 
 \newcommand{\TF}{\textit{(TF)}}
 
diff --git a/Master/texmf-dist/doc/latex/l3kernel/l3term-glossary.pdf b/Master/texmf-dist/doc/latex/l3kernel/l3term-glossary.pdf
index b13715f2eb2..510a5e3438d 100644
--- a/Master/texmf-dist/doc/latex/l3kernel/l3term-glossary.pdf
+++ b/Master/texmf-dist/doc/latex/l3kernel/l3term-glossary.pdf
diff --git a/Master/texmf-dist/doc/latex/l3kernel/l3term-glossary.tex b/Master/texmf-dist/doc/latex/l3kernel/l3term-glossary.tex
index 2b2311f460b..d2cfb6c425c 100644
--- a/Master/texmf-dist/doc/latex/l3kernel/l3term-glossary.tex
+++ b/Master/texmf-dist/doc/latex/l3kernel/l3term-glossary.tex
@@ -32,7 +32,7 @@ The released version of this bundle is available from CTAN.
         {latex-team@latex-project.org}%
     }%
 }
-\date{Released 2019-05-05}
+\date{Released 2019-05-07}
 
 \newcommand{\TF}{\textit{(TF)}}
 
diff --git a/Master/texmf-dist/doc/latex/l3kernel/source3.pdf b/Master/texmf-dist/doc/latex/l3kernel/source3.pdf
index 50a33fa8e60..eddbd6c1f1e 100644
--- a/Master/texmf-dist/doc/latex/l3kernel/source3.pdf
+++ b/Master/texmf-dist/doc/latex/l3kernel/source3.pdf
diff --git a/Master/texmf-dist/doc/latex/l3kernel/source3.tex b/Master/texmf-dist/doc/latex/l3kernel/source3.tex
index 49d84f558e4..cd9c6f4cad4 100644
--- a/Master/texmf-dist/doc/latex/l3kernel/source3.tex
+++ b/Master/texmf-dist/doc/latex/l3kernel/source3.tex
@@ -53,7 +53,7 @@ for those people who are interested.
          {latex-team@latex-project.org}%
    }%
 }
-\date{Released 2019-05-05}
+\date{Released 2019-05-07}
 
 \pagenumbering{roman}
 \maketitle
diff --git a/Master/texmf-dist/source/latex/l3kernel/expl3.dtx b/Master/texmf-dist/source/latex/l3kernel/expl3.dtx
index 7eb34da5cfb..77aef12afe7 100644
--- a/Master/texmf-dist/source/latex/l3kernel/expl3.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/expl3.dtx
@@ -23,7 +23,7 @@
 % for those people who are interested.
 %
 %<*driver|generic|package>
-\def\ExplFileDate{2019-05-05}%
+\def\ExplFileDate{2019-05-07}%
 %</driver|generic|package>
 %<*driver>
 \documentclass[full]{l3doc}
@@ -51,7 +51,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2019-05-05}
+% \date{Released 2019-05-07}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3alloc.dtx b/Master/texmf-dist/source/latex/l3kernel/l3alloc.dtx
index 0a370268c40..8630aadd0e7 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3alloc.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3alloc.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2019-05-05}
+% \date{Released 2019-05-07}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3basics.dtx b/Master/texmf-dist/source/latex/l3kernel/l3basics.dtx
index 8c62b447ab3..2d2ca43f60e 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3basics.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3basics.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2019-05-05}
+% \date{Released 2019-05-07}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3bootstrap.dtx b/Master/texmf-dist/source/latex/l3kernel/l3bootstrap.dtx
index cfb2f501f09..19c48145a9a 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3bootstrap.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3bootstrap.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2019-05-05}
+% \date{Released 2019-05-07}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3box.dtx b/Master/texmf-dist/source/latex/l3kernel/l3box.dtx
index 9503589690a..922daa52a8f 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3box.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3box.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2019-05-05}
+% \date{Released 2019-05-07}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3candidates.dtx b/Master/texmf-dist/source/latex/l3kernel/l3candidates.dtx
index 6759d6583ec..62ace001892 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3candidates.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3candidates.dtx
@@ -44,7 +44,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2019-05-05}
+% \date{Released 2019-05-07}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3clist.dtx b/Master/texmf-dist/source/latex/l3kernel/l3clist.dtx
index 59f7f611fe0..bd26eae590f 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3clist.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3clist.dtx
@@ -44,7 +44,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2019-05-05}
+% \date{Released 2019-05-07}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3coffins.dtx b/Master/texmf-dist/source/latex/l3kernel/l3coffins.dtx
index 65027298b7f..ad7ae7d9d61 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3coffins.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3coffins.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2019-05-05}
+% \date{Released 2019-05-07}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3color-base.dtx b/Master/texmf-dist/source/latex/l3kernel/l3color-base.dtx
index 79fdf83ad34..bdb82b59cb9 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3color-base.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3color-base.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2019-05-05}
+% \date{Released 2019-05-07}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3deprecation.dtx b/Master/texmf-dist/source/latex/l3kernel/l3deprecation.dtx
index 9b51d1d3c39..9d97cf80368 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3deprecation.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3deprecation.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2019-05-05}
+% \date{Released 2019-05-07}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3doc.dtx b/Master/texmf-dist/source/latex/l3kernel/l3doc.dtx
index 0cc194d5099..fe5c6443f0f 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3doc.dtx
+++ b/Master/texmf-dist/source/latex/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 2019-05-05}
+% \date{Released 2019-05-07}
 % \maketitle
 % \tableofcontents
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3docstrip.dtx b/Master/texmf-dist/source/latex/l3kernel/l3docstrip.dtx
index 9476acbd055..3fe44c872b8 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3docstrip.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3docstrip.dtx
@@ -63,7 +63,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2019-05-05}
+% \date{Released 2019-05-07}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3drivers-basics.dtx b/Master/texmf-dist/source/latex/l3kernel/l3drivers-basics.dtx
index 5a0b3d385a7..9b9674406f1 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3drivers-basics.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3drivers-basics.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2019-05-05}
+% \date{Released 2019-05-07}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3drivers-box.dtx b/Master/texmf-dist/source/latex/l3kernel/l3drivers-box.dtx
index aafdc6cb208..f8a5f1e3a84 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3drivers-box.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3drivers-box.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2019-05-05}
+% \date{Released 2019-05-07}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3drivers-color.dtx b/Master/texmf-dist/source/latex/l3kernel/l3drivers-color.dtx
index cda1e08c618..6a97beffa33 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3drivers-color.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3drivers-color.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2019-05-05}
+% \date{Released 2019-05-07}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3drivers-draw.dtx b/Master/texmf-dist/source/latex/l3kernel/l3drivers-draw.dtx
index 5702bd3716d..bc7bac514eb 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3drivers-draw.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3drivers-draw.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2019-05-05}
+% \date{Released 2019-05-07}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3drivers-image.dtx b/Master/texmf-dist/source/latex/l3kernel/l3drivers-image.dtx
index a4fd3608ce1..f8f88d28bd6 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3drivers-image.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3drivers-image.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2019-05-05}
+% \date{Released 2019-05-07}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3drivers-pdf.dtx b/Master/texmf-dist/source/latex/l3kernel/l3drivers-pdf.dtx
index b3518625b18..66fa57597e4 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3drivers-pdf.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3drivers-pdf.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2019-05-05}
+% \date{Released 2019-05-07}
 %
 % \maketitle
 %
@@ -71,17 +71,6 @@
 % A very small number of items that belong at the driver level but which
 % are common to all drivers.
 %
-% \begin{variable}{\c_@@_pdf_AR_fix_tl}
-%   Part of a fix for a bug in Adobe Reader: see
-%   \url{https://forums.adobe.com/message/5787612#5787612}. The workaround
-%   is taken from \pkg{pdfbase}: this \enquote{magic} dictionary entry has to
-%   be passed correctly to each driver.
-%    \begin{macrocode}
-\tl_const:Nn \c_@@_pdf_AR_fix_tl
-  { /Ff ~ 65537 /FT /Btn /Subtype /Widget }
-%    \end{macrocode}
-% \end{variable}
-%
 % \begin{variable}{\l_@@_pdf_tmp_box}
 %   For fitting destinations.
 %    \begin{macrocode}
@@ -800,8 +789,7 @@
     \@@_pdfmark:x
       {
         /_objdef { driver.obj \int_use:N \g_@@_pdf_object_int }
-        driver.rect ~
-        \c_@@_pdf_AR_fix_tl
+        driver.rect
         /ANN
       }
   }
@@ -1198,12 +1186,11 @@
 % \subsubsection{Structure}
 %
 % \begin{macro}{\driver_pdf_compresslevel:n}
-% \begin{macro}{\driver_pdf_objects_enable:, \driver_pdf_objects_disable:}
+% \begin{macro}{\driver_pdf_compress_objects:n}
 %   These are all no-ops.
 %    \begin{macrocode}
 \cs_new_protected:Npn \driver_pdf_compresslevel:n #1 { }
-\cs_new_protected:Npn \driver_pdf_objects_enable: { }
-\cs_new_protected:Npn \driver_pdf_objects_disable: { }
+\cs_new_protected:Npn \driver_pdf_compress_objects:n #1 { }
 %    \end{macrocode}
 % \end{macro}
 % \end{macro}
@@ -1237,26 +1224,11 @@
 %
 % \subsubsection{Annotations}
 %
-% \begin{macro}{\@@_pdf_AR_fix:}
-%   The fix for the Adobe Reader bug: needed for generic annotations and links.
-%    \begin{macrocode}
-\cs_new_protected:Npx \@@_pdf_AR_fix:
-  {
-    \cs_if_exist:NTF \tex_pdfextension:D
-      { \tex_pdfextension:D annot ~ }
-      { \tex_pdfannot:D }
-      width  ~ 3pt ~ height ~ 3pt ~ depth ~ 0pt
-      { \c_@@_pdf_AR_fix_tl }
-  }
-%    \end{macrocode}
-% \end{macro}
-%
 % \begin{macro}{\driver_pdf_annotation:nnnn}
 %   Simply pass the raw data through, just dealing with evaluation of dimensions.
 %    \begin{macrocode}
 \cs_new_protected:Npx \driver_pdf_annotation:nnnn #1#2#3#4
   {
-    \@@_pdf_AR_fix:
     \cs_if_exist:NTF \tex_pdfextension:D
       { \tex_pdfextension:D annot ~ }
       { \tex_pdfannot:D }
@@ -1294,7 +1266,6 @@
   { \@@_pdf_link_begin:nnnw {#1} { user } {#2} }
 \cs_new_protected:Npx \@@_pdf_link_begin:nnnw #1#2#3
   {
-    \@@_pdf_AR_fix:
     \cs_if_exist:NTF \tex_pdfextension:D
       { \tex_pdfextension:D startlink ~ }
       { \tex_pdfstartlink:D }
@@ -1487,8 +1458,8 @@
 % \subsubsection{Structure}
 %
 % \begin{macro}{\driver_pdf_compresslevel:n}
-% \begin{macro}{\driver_pdf_objects_enable:, \driver_pdf_objects_disable:}
-% \begin{macro}{\@@_pdf_objectlevel:n}
+% \begin{macro}{\driver_pdf_compress_objects:n}
+% \begin{macro}{\@@_pdf_objcompresslevel:n}
 %   Simply pass data to the engine.
 %    \begin{macrocode}
 \cs_new_protected:Npx \driver_pdf_compresslevel:n #1
@@ -1498,11 +1469,13 @@
       { \tex_pdfvariable:D compresslevel }
       \exp_not:N \int_value:w \exp_not:N \int_eval:n {#1} \scan_stop:
   }
-\cs_new_protected:Npn \driver_pdf_objects_enable:
-  { \@@_pdf_objectlevel:n { 2 } }
-\cs_new_protected:Npn \driver_pdf_objects_disable:
-  { \@@_pdf_objectlevel:n { 0 } }
-\cs_new_protected:Npx \@@_pdf_objectlevel:n #1
+\cs_new_protected:Npn \driver_pdf_compress_objects:n #1
+  {
+    \str_if_eq:nnTF {#1} { true }
+      { \@@_pdf_objcompresslevel:n { 2 } }
+      { \@@_pdf_objcompresslevel:n { 0 } }
+  }
+\cs_new_protected:Npx \@@_pdf_objcompresslevel:n #1
   {
     \cs_if_exist:NTF \tex_pdfobjcompresslevel:D
       { \tex_pdfobjcompresslevel:D }
@@ -1710,20 +1683,6 @@
 %    \end{macrocode}
 % \end{variable}
 %
-% \begin{macro}{\@@_pdf_AR_fix:}
-%   The fix for the Adobe Reader bug: needed for generic annotations and links.
-%    \begin{macrocode}
-\cs_new_protected:Npx \@@_pdf_AR_fix:
-  {
-    \@@_pdf:n
-      {
-        ann ~ width ~ 3pt ~ height ~ 3pt ~ depth ~ 0pt
-        << \c_@@_pdf_AR_fix_tl >>
-      }
-  }
-%    \end{macrocode}
-% \end{macro}
-%
 % \begin{variable}{\g_@@_pdf_annotation_int}
 %   Needed as objects which are not annotations could be created.
 %    \begin{macrocode}
@@ -1752,7 +1711,6 @@
   }
 \cs_new_protected:Npn \@@_pdf_annotation:nnnn #1#2#3#4
   {
-    \@@_pdf_AR_fix:
     \int_gincr:N \g_@@_pdf_object_int
     \int_gset_eq:NN \g_@@_pdf_annotation_int \g_@@_pdf_object_int
     \@@_pdf:x
@@ -1779,7 +1737,6 @@
   { \@@_pdf_link_begin:n {#1#2} }
 \cs_new_protected:Npn \@@_pdf_link_begin:n #1
   {
-    \@@_pdf_AR_fix:
     \@@_pdf:n
       {
          bann
@@ -1874,14 +1831,16 @@
 % \subsubsection{Structure}
 %
 % \begin{macro}{\driver_pdf_compresslevel:n}
-% \begin{macro}{\driver_pdf_objects_enable:, \driver_pdf_objects_disable:}
+% \begin{macro}{\driver_pdf_compress_objects:n}
 %   Pass data to the driver: these are a one-shot.
 %    \begin{macrocode}
 \cs_new_protected:Npn \driver_pdf_compresslevel:n #1
   { \@@_literal:x { dvipdfmx:config~z~ \int_eval:n {#1} } }
-\cs_new_protected:Npn \driver_pdf_objects_enable: { }
-\cs_new_protected:Npn \driver_pdf_objects_disable:
-  { \@@_literal:n { dvipdfmx:config~C~0x40 } }
+\cs_new_protected:Npn \driver_pdf_compress_objects:n #1
+  {
+    \str_if_eq:nnF {#1} { true }
+      { \@@_literal:n { dvipdfmx:config~C~0x40 } }
+  }
 %    \end{macrocode}
 % \end{macro}
 % \end{macro}
@@ -1949,12 +1908,11 @@
 % \subsubsection{Structure}
 %
 % \begin{macro}{\driver_pdf_compresslevel:n}
-% \begin{macro}{\driver_pdf_objects_enable:, \driver_pdf_objects_disable:}
+% \begin{macro}{\driver_pdf_compress_objects:n}
 %   These are all no-ops.
 %    \begin{macrocode}
 \cs_new_protected:Npn \driver_pdf_compresslevel:n #1 { }
-\cs_new_protected:Npn \driver_pdf_objects_enable: { }
-\cs_new_protected:Npn \driver_pdf_objects_disable: { }
+\cs_new_protected:Npn \driver_pdf_compress_objects:n #1 { }
 %    \end{macrocode}
 % \end{macro}
 % \end{macro}
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3drivers.dtx b/Master/texmf-dist/source/latex/l3kernel/l3drivers.dtx
index 791f9bf0aeb..352eb9a149c 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3drivers.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3drivers.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2019-05-05}
+% \date{Released 2019-05-07}
 %
 % \maketitle
 %
@@ -644,15 +644,19 @@
 %   be set only once.
 % \end{function}
 %
-% \begin{function}{\driver_pdf_objects_enable:, \driver_pdf_objects_disable:}
+% \begin{function}[added = 2019-05-07]{\driver_pdf_objects:}
 %   \begin{syntax}
-%     \cs{driver_pdf_objects_disable:}
+%     \cs{driver_pdf_compress_objects:n} \Arg{switch}
 %   \end{syntax}
-%   Enables or disables the creation of PDF objects. These objects are used to
+%   Enables or disables the compression of non-stream objects when writing
+%   the PDF. This depends on the \meta{switch}: either \texttt{true} or
+%   \texttt{false}). Compression of non-stream objects is used to
 %   reduce the size of PDFs, and typically are enabled as standard. When used
 %   with \texttt{(x)dvipdfmx}, object creation can be disabled but not
 %   re-enabled, and this setting may only be applied globally: it should
-%   be set only once.
+%   be set only once. Note that for \texttt{dvips} this setting has no action,
+%   as control of this functionality is dependent on the conversion from
+%   PostScript to PDF.
 % \end{function}
 %
 % \begin{function}[EXP, added = 2019-04-11]
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3expan.dtx b/Master/texmf-dist/source/latex/l3kernel/l3expan.dtx
index e8af3b75aa6..5632b927799 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3expan.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3expan.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2019-05-05}
+% \date{Released 2019-05-07}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3file.dtx b/Master/texmf-dist/source/latex/l3kernel/l3file.dtx
index b3039622b59..abbdf458c7a 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3file.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3file.dtx
@@ -44,7 +44,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2019-05-05}
+% \date{Released 2019-05-07}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3final.dtx b/Master/texmf-dist/source/latex/l3kernel/l3final.dtx
index 260b235d52f..b54aa8b18b2 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3final.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3final.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2019-05-05}
+% \date{Released 2019-05-07}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3flag.dtx b/Master/texmf-dist/source/latex/l3kernel/l3flag.dtx
index 8c9752f3d6d..3e327adb363 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3flag.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3flag.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2019-05-05}
+% \date{Released 2019-05-07}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3fp-assign.dtx b/Master/texmf-dist/source/latex/l3kernel/l3fp-assign.dtx
index a472c3c842a..8586b87bae5 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3fp-assign.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3fp-assign.dtx
@@ -40,7 +40,7 @@
 %          {latex-team@latex-project.org}^^A
 %    }^^A
 % }
-% \date{Released 2019-05-05}
+% \date{Released 2019-05-07}
 % \maketitle
 %
 % \begin{documentation}
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3fp-aux.dtx b/Master/texmf-dist/source/latex/l3kernel/l3fp-aux.dtx
index 6cecb8b892a..2220f1ff961 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3fp-aux.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3fp-aux.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2019-05-05}
+% \date{Released 2019-05-07}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3fp-basics.dtx b/Master/texmf-dist/source/latex/l3kernel/l3fp-basics.dtx
index 437ea25dc55..959aaa767b3 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3fp-basics.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3fp-basics.dtx
@@ -40,7 +40,7 @@
 %          {latex-team@latex-project.org}^^A
 %    }^^A
 % }
-% \date{Released 2019-05-05}
+% \date{Released 2019-05-07}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3fp-convert.dtx b/Master/texmf-dist/source/latex/l3kernel/l3fp-convert.dtx
index 166acc48098..002949473f9 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3fp-convert.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3fp-convert.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2019-05-05}
+% \date{Released 2019-05-07}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3fp-expo.dtx b/Master/texmf-dist/source/latex/l3kernel/l3fp-expo.dtx
index 4531d5e3ca8..da2fb058fa2 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3fp-expo.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3fp-expo.dtx
@@ -40,7 +40,7 @@
 %          {latex-team@latex-project.org}^^A
 %    }^^A
 % }
-% \date{Released 2019-05-05}
+% \date{Released 2019-05-07}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3fp-extended.dtx b/Master/texmf-dist/source/latex/l3kernel/l3fp-extended.dtx
index 62850cb8739..f61a75d20e3 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3fp-extended.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3fp-extended.dtx
@@ -40,7 +40,7 @@
 %          {latex-team@latex-project.org}^^A
 %    }^^A
 % }
-% \date{Released 2019-05-05}
+% \date{Released 2019-05-07}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3fp-logic.dtx b/Master/texmf-dist/source/latex/l3kernel/l3fp-logic.dtx
index edca477541a..f45dfdd9c8c 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3fp-logic.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3fp-logic.dtx
@@ -40,7 +40,7 @@
 %          {latex-team@latex-project.org}^^A
 %    }^^A
 % }
-% \date{Released 2019-05-05}
+% \date{Released 2019-05-07}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3fp-parse.dtx b/Master/texmf-dist/source/latex/l3kernel/l3fp-parse.dtx
index a9208ff80f0..35fbef51a79 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3fp-parse.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3fp-parse.dtx
@@ -40,7 +40,7 @@
 %          {latex-team@latex-project.org}^^A
 %    }^^A
 % }
-% \date{Released 2019-05-05}
+% \date{Released 2019-05-07}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3fp-random.dtx b/Master/texmf-dist/source/latex/l3kernel/l3fp-random.dtx
index a646a976d20..d3806b650d4 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3fp-random.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3fp-random.dtx
@@ -40,7 +40,7 @@
 %          {latex-team@latex-project.org}^^A
 %    }^^A
 % }
-% \date{Released 2019-05-05}
+% \date{Released 2019-05-07}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3fp-round.dtx b/Master/texmf-dist/source/latex/l3kernel/l3fp-round.dtx
index 273b9988a41..5b2b3f7df19 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3fp-round.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3fp-round.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2019-05-05}
+% \date{Released 2019-05-07}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3fp-traps.dtx b/Master/texmf-dist/source/latex/l3kernel/l3fp-traps.dtx
index dc386112098..d959159d249 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3fp-traps.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3fp-traps.dtx
@@ -40,7 +40,7 @@
 %          {latex-team@latex-project.org}^^A
 %    }^^A
 % }
-% \date{Released 2019-05-05}
+% \date{Released 2019-05-07}
 % \maketitle
 %
 % \begin{documentation}
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3fp-trig.dtx b/Master/texmf-dist/source/latex/l3kernel/l3fp-trig.dtx
index 9d59d5cfe89..73255fc75ce 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3fp-trig.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3fp-trig.dtx
@@ -40,7 +40,7 @@
 %          {latex-team@latex-project.org}^^A
 %    }^^A
 % }
-% \date{Released 2019-05-05}
+% \date{Released 2019-05-07}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3fp.dtx b/Master/texmf-dist/source/latex/l3kernel/l3fp.dtx
index 932f349520f..e1b7c97528a 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3fp.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3fp.dtx
@@ -49,7 +49,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2019-05-05}
+% \date{Released 2019-05-07}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3fparray.dtx b/Master/texmf-dist/source/latex/l3kernel/l3fparray.dtx
index ba49d40f565..5e4990ac3bc 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3fparray.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3fparray.dtx
@@ -44,7 +44,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2019-05-05}
+% \date{Released 2019-05-07}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3int.dtx b/Master/texmf-dist/source/latex/l3kernel/l3int.dtx
index 46b9356c5c1..68cef09c400 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3int.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3int.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2019-05-05}
+% \date{Released 2019-05-07}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3intarray.dtx b/Master/texmf-dist/source/latex/l3kernel/l3intarray.dtx
index 709b8571199..2b92dd7cd22 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3intarray.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3intarray.dtx
@@ -44,7 +44,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2019-05-05}
+% \date{Released 2019-05-07}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3kernel-functions.dtx b/Master/texmf-dist/source/latex/l3kernel/l3kernel-functions.dtx
index 1537bac46e4..54a67f7190c 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3kernel-functions.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3kernel-functions.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2019-05-05}
+% \date{Released 2019-05-07}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3keys.dtx b/Master/texmf-dist/source/latex/l3kernel/l3keys.dtx
index 28718aadf04..4a5f702e881 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3keys.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3keys.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2019-05-05}
+% \date{Released 2019-05-07}
 %
 % \maketitle
 %
@@ -382,6 +382,16 @@
 %   Choices are discussed in detail in section~\ref{sec:l3keys:choice}.
 % \end{function}
 %
+% \begin{function}[added = 2019-05-05]
+%   {.muskip_set:N, .muskip_set:c, .muskip_gset:N, .muskip_gset:c}
+%   \begin{syntax}
+%     \meta{key} .muskip_set:N = \meta{muskip}
+%   \end{syntax}
+%   Defines \meta{key} to set \meta{muskip} to \meta{value} (which
+%   must be a muskip expression). If the variable does not exist, it
+%   is created globally at the point that the key is set up.
+% \end{function}
+%
 % \begin{function}[added = 2019-01-31]
 %   {.prop_put:N, .prop_put:c, .prop_gput:N, .prop_gput:c}
 %   \begin{syntax}
@@ -1997,6 +2007,20 @@
 % \end{macro}
 % \end{macro}
 %
+% \begin{macro}{.muskip_set:N, .muskip_set:c, .muskip_gset:N, .muskip_gset:c}
+%   Setting a variable is very easy: just pass the data along.
+%    \begin{macrocode}
+\cs_new_protected:cpn { \c_@@_props_root_tl .muskip_set:N } #1
+  { \@@_variable_set:NnnN #1 { muskip } { } n }
+\cs_new_protected:cpn { \c_@@_props_root_tl .muskip_set:c } #1
+  { \@@_variable_set:cnnN {#1} { muskip } { } n }
+\cs_new_protected:cpn { \c_@@_props_root_tl .muskip_gset:N } #1
+  { \@@_variable_set:NnnN #1 { muskip } { g } n }
+\cs_new_protected:cpn { \c_@@_props_root_tl .muskip_gset:c } #1
+  { \@@_variable_set:cnnN {#1} { muskip } { g } n }
+%    \end{macrocode}
+% \end{macro}
+%
 % \begin{macro}{.prop_put:N, .prop_put:c, .prop_gput:N, .prop_gput:c}
 %   Setting a variable is very easy: just pass the data along.
 %    \begin{macrocode}
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3legacy.dtx b/Master/texmf-dist/source/latex/l3kernel/l3legacy.dtx
index 5f0f4683af7..4042ac496da 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3legacy.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3legacy.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2019-05-05}
+% \date{Released 2019-05-07}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3luatex.dtx b/Master/texmf-dist/source/latex/l3kernel/l3luatex.dtx
index d485d307c8e..681ad43e66c 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3luatex.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3luatex.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2019-05-05}
+% \date{Released 2019-05-07}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3msg.dtx b/Master/texmf-dist/source/latex/l3kernel/l3msg.dtx
index b42f783c3a2..34538000c00 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3msg.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3msg.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2019-05-05}
+% \date{Released 2019-05-07}
 %
 % \maketitle
 %
@@ -1860,7 +1860,11 @@
       { Inconsistent~local/global~assignment }
       {
         \c_@@_coding_error_text_tl
-        \if:w l #2 Local \else: Global \fi: \ %
+        \if:w l #2 Local
+        \else:
+          \if:w g #2 Global \else: Constant \fi:
+        \fi:
+        \ %
         assignment~to~a~
         \if:w l #1 local
         \else:
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3names.dtx b/Master/texmf-dist/source/latex/l3kernel/l3names.dtx
index 3443c1e1184..4b4d6b7eb99 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3names.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3names.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2019-05-05}
+% \date{Released 2019-05-07}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3prg.dtx b/Master/texmf-dist/source/latex/l3kernel/l3prg.dtx
index 0411927e986..892be9f7aff 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3prg.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3prg.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2019-05-05}
+% \date{Released 2019-05-07}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3prop.dtx b/Master/texmf-dist/source/latex/l3kernel/l3prop.dtx
index 9f6dac5f6a1..63c72312ce4 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3prop.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3prop.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2019-05-05}
+% \date{Released 2019-05-07}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3quark.dtx b/Master/texmf-dist/source/latex/l3kernel/l3quark.dtx
index 5d5cf225266..5d8d04ca19b 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3quark.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3quark.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2019-05-05}
+% \date{Released 2019-05-07}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3regex.dtx b/Master/texmf-dist/source/latex/l3kernel/l3regex.dtx
index db911fd96f5..a71b26efb50 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3regex.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3regex.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2019-05-05}
+% \date{Released 2019-05-07}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3seq.dtx b/Master/texmf-dist/source/latex/l3kernel/l3seq.dtx
index 0dc37af9239..4978342acb8 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3seq.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3seq.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2019-05-05}
+% \date{Released 2019-05-07}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3skip.dtx b/Master/texmf-dist/source/latex/l3kernel/l3skip.dtx
index 425991d3599..6dbe67aa99f 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3skip.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3skip.dtx
@@ -44,7 +44,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2019-05-05}
+% \date{Released 2019-05-07}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3sort.dtx b/Master/texmf-dist/source/latex/l3kernel/l3sort.dtx
index e77968e5497..efdd156d27a 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3sort.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3sort.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2019-05-05}
+% \date{Released 2019-05-07}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3str.dtx b/Master/texmf-dist/source/latex/l3kernel/l3str.dtx
index 9d5d0826220..dcf37ff0ca9 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3str.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3str.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2019-05-05}
+% \date{Released 2019-05-07}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3sys.dtx b/Master/texmf-dist/source/latex/l3kernel/l3sys.dtx
index d93bbc0377b..1fad7d2b3fe 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3sys.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3sys.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2019-05-05}
+% \date{Released 2019-05-07}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3tl-analysis.dtx b/Master/texmf-dist/source/latex/l3kernel/l3tl-analysis.dtx
index 0147e115a37..7986bb083a6 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3tl-analysis.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3tl-analysis.dtx
@@ -44,7 +44,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2019-05-05}
+% \date{Released 2019-05-07}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3tl.dtx b/Master/texmf-dist/source/latex/l3kernel/l3tl.dtx
index 8851fb5f5e6..029ade7027e 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3tl.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3tl.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2019-05-05}
+% \date{Released 2019-05-07}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3token.dtx b/Master/texmf-dist/source/latex/l3kernel/l3token.dtx
index 5a85b70d733..4ef58f52567 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3token.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3token.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2019-05-05}
+% \date{Released 2019-05-07}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3unicode.dtx b/Master/texmf-dist/source/latex/l3kernel/l3unicode.dtx
index fc81f46e3ec..37494fd319a 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3unicode.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3unicode.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2019-05-05}
+% \date{Released 2019-05-07}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/tex/latex/l3kernel/expl3-code.tex b/Master/texmf-dist/tex/latex/l3kernel/expl3-code.tex
index 82d11da2357..0bd3c4c3f10 100644
--- a/Master/texmf-dist/tex/latex/l3kernel/expl3-code.tex
+++ b/Master/texmf-dist/tex/latex/l3kernel/expl3-code.tex
@@ -64,7 +64,7 @@
 %% and all files in that bundle must be distributed together.
 %% 
 %% File: expl3.dtx
-\def\ExplFileDate{2019-05-05}%
+\def\ExplFileDate{2019-05-07}%
 \begingroup
   \def\next{\endgroup}%
   \expandafter\ifx\csname PackageError\endcsname\relax
@@ -10130,7 +10130,11 @@
       { Inconsistent~local/global~assignment }
       {
         \c__msg_coding_error_text_tl
-        \if:w l #2 Local \else: Global \fi: \ %
+        \if:w l #2 Local
+        \else:
+          \if:w g #2 Global \else: Constant \fi:
+        \fi:
+        \ %
         assignment~to~a~
         \if:w l #1 local
         \else:
@@ -12535,6 +12539,14 @@
   { \exp_args:No \__keys_multichoices_make:nn #1 }
 \cs_new_protected:cpn { \c__keys_props_root_tl .multichoices:xn } #1
   { \exp_args:Nx \__keys_multichoices_make:nn #1 }
+\cs_new_protected:cpn { \c__keys_props_root_tl .muskip_set:N } #1
+  { \__keys_variable_set:NnnN #1 { muskip } { } n }
+\cs_new_protected:cpn { \c__keys_props_root_tl .muskip_set:c } #1
+  { \__keys_variable_set:cnnN {#1} { muskip } { } n }
+\cs_new_protected:cpn { \c__keys_props_root_tl .muskip_gset:N } #1
+  { \__keys_variable_set:NnnN #1 { muskip } { g } n }
+\cs_new_protected:cpn { \c__keys_props_root_tl .muskip_gset:c } #1
+  { \__keys_variable_set:cnnN {#1} { muskip } { g } n }
 \cs_new_protected:cpn { \c__keys_props_root_tl .prop_put:N } #1
   { \__keys_prop_put:Nn #1 { } }
 \cs_new_protected:cpn { \c__keys_props_root_tl .prop_put:c } #1
diff --git a/Master/texmf-dist/tex/latex/l3kernel/expl3-generic.tex b/Master/texmf-dist/tex/latex/l3kernel/expl3-generic.tex
index e4401cb552c..a9a82d7acf7 100644
--- a/Master/texmf-dist/tex/latex/l3kernel/expl3-generic.tex
+++ b/Master/texmf-dist/tex/latex/l3kernel/expl3-generic.tex
@@ -19,7 +19,7 @@
 %% and all files in that bundle must be distributed together.
 %% 
 %% File: expl3.dtx
-\def\ExplFileDate{2019-05-05}%
+\def\ExplFileDate{2019-05-07}%
 \let\ExplLoaderFileDate\ExplFileDate
 \begingroup
   \def\tempa{LaTeX2e}%
diff --git a/Master/texmf-dist/tex/latex/l3kernel/expl3.sty b/Master/texmf-dist/tex/latex/l3kernel/expl3.sty
index d017eb98e2e..677f47de59d 100644
--- a/Master/texmf-dist/tex/latex/l3kernel/expl3.sty
+++ b/Master/texmf-dist/tex/latex/l3kernel/expl3.sty
@@ -19,7 +19,7 @@
 %% and all files in that bundle must be distributed together.
 %% 
 %% File: expl3.dtx
-\def\ExplFileDate{2019-05-05}%
+\def\ExplFileDate{2019-05-07}%
 \let\ExplLoaderFileDate\ExplFileDate
 \ProvidesPackage{expl3}
   [%
diff --git a/Master/texmf-dist/tex/latex/l3kernel/l3dvipdfmx.def b/Master/texmf-dist/tex/latex/l3kernel/l3dvipdfmx.def
index 97bde0a30b9..bed26918ee0 100644
--- a/Master/texmf-dist/tex/latex/l3kernel/l3dvipdfmx.def
+++ b/Master/texmf-dist/tex/latex/l3kernel/l3dvipdfmx.def
@@ -435,8 +435,6 @@
       }
   }
 %% File: l3drivers-pdf.dtx
-\tl_const:Nn \c__driver_pdf_AR_fix_tl
-  { /Ff ~ 65537 /FT /Btn /Subtype /Widget }
 \box_new:N \l__driver_pdf_tmp_box
 \cs_new_protected:Npx \__driver_pdf:n #1
   { \__driver_literal:n { pdf: #1 } }
@@ -504,14 +502,6 @@
           { \bool_gset_false:N \g__driver_landscape_bool }
       }
   }
-\cs_new_protected:Npx \__driver_pdf_AR_fix:
-  {
-    \__driver_pdf:n
-      {
-        ann ~ width ~ 3pt ~ height ~ 3pt ~ depth ~ 0pt
-        << \c__driver_pdf_AR_fix_tl >>
-      }
-  }
 \int_new:N \g__driver_pdf_annotation_int
 \cs_new_protected:Npn \driver_pdf_annotation:nnnn #1#2#3#4
   {
@@ -530,7 +520,6 @@
   }
 \cs_new_protected:Npn \__driver_pdf_annotation:nnnn #1#2#3#4
   {
-    \__driver_pdf_AR_fix:
     \int_gincr:N \g__driver_pdf_object_int
     \int_gset_eq:NN \g__driver_pdf_annotation_int \g__driver_pdf_object_int
     \__driver_pdf:x
@@ -548,7 +537,6 @@
   { \__driver_pdf_link_begin:n {#1#2} }
 \cs_new_protected:Npn \__driver_pdf_link_begin:n #1
   {
-    \__driver_pdf_AR_fix:
     \__driver_pdf:n
       {
          bann
@@ -617,9 +605,11 @@
   }
 \cs_new_protected:Npn \driver_pdf_compresslevel:n #1
   { \__driver_literal:x { dvipdfmx:config~z~ \int_eval:n {#1} } }
-\cs_new_protected:Npn \driver_pdf_objects_enable: { }
-\cs_new_protected:Npn \driver_pdf_objects_disable:
-  { \__driver_literal:n { dvipdfmx:config~C~0x40 } }
+\cs_new_protected:Npn \driver_pdf_compress_objects:n #1
+  {
+    \str_if_eq:nnF {#1} { true }
+      { \__driver_literal:n { dvipdfmx:config~C~0x40 } }
+  }
 \cs_new_protected:Npn \driver_pdf_version_major:n #1
   {
     \cs_gset:Npx \driver_pdf_version_major: { \int_eval:n {#1} }
diff --git a/Master/texmf-dist/tex/latex/l3kernel/l3dvips.def b/Master/texmf-dist/tex/latex/l3kernel/l3dvips.def
index ee2d45c8aa1..ad9d6d9adca 100644
--- a/Master/texmf-dist/tex/latex/l3kernel/l3dvips.def
+++ b/Master/texmf-dist/tex/latex/l3kernel/l3dvips.def
@@ -416,8 +416,6 @@
 \cs_new_protected:Npn \__driver_image_include_eps:n #1
   { \__driver_literal:n { PSfile = #1 } }
 %% File: l3drivers-pdf.dtx
-\tl_const:Nn \c__driver_pdf_AR_fix_tl
-  { /Ff ~ 65537 /FT /Btn /Subtype /Widget }
 \box_new:N \l__driver_pdf_tmp_box
 \cs_new_protected:Npn \__driver_pdfmark:n #1
   { \__driver_postscript:n { mark #1 ~ pdfmark } }
@@ -917,8 +915,7 @@
     \__driver_pdfmark:x
       {
         /_objdef { driver.obj \int_use:N \g__driver_pdf_object_int }
-        driver.rect ~
-        \c__driver_pdf_AR_fix_tl
+        driver.rect
         /ANN
       }
   }
@@ -1164,8 +1161,7 @@
     \group_end:
   }
 \cs_new_protected:Npn \driver_pdf_compresslevel:n #1 { }
-\cs_new_protected:Npn \driver_pdf_objects_enable: { }
-\cs_new_protected:Npn \driver_pdf_objects_disable: { }
+\cs_new_protected:Npn \driver_pdf_compress_objects:n #1 { }
 \cs_new_protected:Npn \driver_pdf_version_major_gset:n #1 { }
 \cs_new_protected:Npn \driver_pdf_version_minor_gset:n #1 { }
 \cs_new:Npn \driver_pdf_version_major: { -1 }
diff --git a/Master/texmf-dist/tex/latex/l3kernel/l3dvisvgm.def b/Master/texmf-dist/tex/latex/l3kernel/l3dvisvgm.def
index ffb86659911..fc22d5d3a8d 100644
--- a/Master/texmf-dist/tex/latex/l3kernel/l3dvisvgm.def
+++ b/Master/texmf-dist/tex/latex/l3kernel/l3dvisvgm.def
@@ -467,8 +467,6 @@
 \cs_new:Npn \__driver_image_include_bitmap_quote:w #1 " #2 " #3 \q_stop
   { " #2 " }
 %% File: l3drivers-pdf.dtx
-\tl_const:Nn \c__driver_pdf_AR_fix_tl
-  { /Ff ~ 65537 /FT /Btn /Subtype /Widget }
 \box_new:N \l__driver_pdf_tmp_box
 \cs_new_protected:Npn \driver_pdf_catalog_gput:nn #1#2 { }
 \cs_new_protected:Npn \driver_pdf_info_gput:nn #1#2 { }
@@ -476,8 +474,7 @@
 \cs_new:Npn \driver_pdf_object_ref:n #1 { }
 \cs_new_protected:Npn \driver_pdf_object_write:nn #1#2 { }
 \cs_new_protected:Npn \driver_pdf_compresslevel:n #1 { }
-\cs_new_protected:Npn \driver_pdf_objects_enable: { }
-\cs_new_protected:Npn \driver_pdf_objects_disable: { }
+\cs_new_protected:Npn \driver_pdf_compress_objects:n #1 { }
 \cs_new_protected:Npn \driver_pdf_version_major_gset:n #1 { }
 \cs_new_protected:Npn \driver_pdf_version_minor_gset:n #1 { }
 \cs_new:Npn \driver_pdf_version_major: { -1 }
diff --git a/Master/texmf-dist/tex/latex/l3kernel/l3pdfmode.def b/Master/texmf-dist/tex/latex/l3kernel/l3pdfmode.def
index c555f97578d..1ebc92eb4bb 100644
--- a/Master/texmf-dist/tex/latex/l3kernel/l3pdfmode.def
+++ b/Master/texmf-dist/tex/latex/l3kernel/l3pdfmode.def
@@ -422,20 +422,9 @@
 \cs_new_eq:NN \__driver_image_include_pdf:n \__driver_image_include_jpg:n
 \cs_new_eq:NN \__driver_image_include_png:n \__driver_image_include_jpg:n
 %% File: l3drivers-pdf.dtx
-\tl_const:Nn \c__driver_pdf_AR_fix_tl
-  { /Ff ~ 65537 /FT /Btn /Subtype /Widget }
 \box_new:N \l__driver_pdf_tmp_box
-\cs_new_protected:Npx \__driver_pdf_AR_fix:
-  {
-    \cs_if_exist:NTF \tex_pdfextension:D
-      { \tex_pdfextension:D annot ~ }
-      { \tex_pdfannot:D }
-      width  ~ 3pt ~ height ~ 3pt ~ depth ~ 0pt
-      { \c__driver_pdf_AR_fix_tl }
-  }
 \cs_new_protected:Npx \driver_pdf_annotation:nnnn #1#2#3#4
   {
-    \__driver_pdf_AR_fix:
     \cs_if_exist:NTF \tex_pdfextension:D
       { \tex_pdfextension:D annot ~ }
       { \tex_pdfannot:D }
@@ -458,7 +447,6 @@
   { \__driver_pdf_link_begin:nnnw {#1} { user } {#2} }
 \cs_new_protected:Npx \__driver_pdf_link_begin:nnnw #1#2#3
   {
-    \__driver_pdf_AR_fix:
     \cs_if_exist:NTF \tex_pdfextension:D
       { \tex_pdfextension:D startlink ~ }
       { \tex_pdfstartlink:D }
@@ -596,11 +584,13 @@
       { \tex_pdfvariable:D compresslevel }
       \exp_not:N \int_value:w \exp_not:N \int_eval:n {#1} \scan_stop:
   }
-\cs_new_protected:Npn \driver_pdf_objects_enable:
-  { \__driver_pdf_objectlevel:n { 2 } }
-\cs_new_protected:Npn \driver_pdf_objects_disable:
-  { \__driver_pdf_objectlevel:n { 0 } }
-\cs_new_protected:Npx \__driver_pdf_objectlevel:n #1
+\cs_new_protected:Npn \driver_pdf_compress_objects:n #1
+  {
+    \str_if_eq:nnTF {#1} { true }
+      { \__driver_pdf_objcompresslevel:n { 2 } }
+      { \__driver_pdf_objcompresslevel:n { 0 } }
+  }
+\cs_new_protected:Npx \__driver_pdf_objcompresslevel:n #1
   {
     \cs_if_exist:NTF \tex_pdfobjcompresslevel:D
       { \tex_pdfobjcompresslevel:D }
diff --git a/Master/texmf-dist/tex/latex/l3kernel/l3xdvipdfmx.def b/Master/texmf-dist/tex/latex/l3kernel/l3xdvipdfmx.def
index a9046507c11..7fc986ec327 100644
--- a/Master/texmf-dist/tex/latex/l3kernel/l3xdvipdfmx.def
+++ b/Master/texmf-dist/tex/latex/l3kernel/l3xdvipdfmx.def
@@ -478,8 +478,6 @@
       \__driver_image_getbb_auxiv:VnNnn \l_image_pagebox_tl
   }
 %% File: l3drivers-pdf.dtx
-\tl_const:Nn \c__driver_pdf_AR_fix_tl
-  { /Ff ~ 65537 /FT /Btn /Subtype /Widget }
 \box_new:N \l__driver_pdf_tmp_box
 \cs_new_protected:Npx \__driver_pdf:n #1
   { \__driver_literal:n { pdf: #1 } }
@@ -547,14 +545,6 @@
           { \bool_gset_false:N \g__driver_landscape_bool }
       }
   }
-\cs_new_protected:Npx \__driver_pdf_AR_fix:
-  {
-    \__driver_pdf:n
-      {
-        ann ~ width ~ 3pt ~ height ~ 3pt ~ depth ~ 0pt
-        << \c__driver_pdf_AR_fix_tl >>
-      }
-  }
 \int_new:N \g__driver_pdf_annotation_int
 \cs_new_protected:Npn \driver_pdf_annotation:nnnn #1#2#3#4
   {
@@ -573,7 +563,6 @@
   }
 \cs_new_protected:Npn \__driver_pdf_annotation:nnnn #1#2#3#4
   {
-    \__driver_pdf_AR_fix:
     \int_gincr:N \g__driver_pdf_object_int
     \int_gset_eq:NN \g__driver_pdf_annotation_int \g__driver_pdf_object_int
     \__driver_pdf:x
@@ -591,7 +580,6 @@
   { \__driver_pdf_link_begin:n {#1#2} }
 \cs_new_protected:Npn \__driver_pdf_link_begin:n #1
   {
-    \__driver_pdf_AR_fix:
     \__driver_pdf:n
       {
          bann
@@ -660,9 +648,11 @@
   }
 \cs_new_protected:Npn \driver_pdf_compresslevel:n #1
   { \__driver_literal:x { dvipdfmx:config~z~ \int_eval:n {#1} } }
-\cs_new_protected:Npn \driver_pdf_objects_enable: { }
-\cs_new_protected:Npn \driver_pdf_objects_disable:
-  { \__driver_literal:n { dvipdfmx:config~C~0x40 } }
+\cs_new_protected:Npn \driver_pdf_compress_objects:n #1
+  {
+    \str_if_eq:nnF {#1} { true }
+      { \__driver_literal:n { dvipdfmx:config~C~0x40 } }
+  }
 \cs_new_protected:Npn \driver_pdf_version_major:n #1
   {
     \cs_gset:Npx \driver_pdf_version_major: { \int_eval:n {#1} }