5 files changed, 21 insertions, 28 deletions
diff --git a/Master/texmf-dist/doc/generic/pgf/ChangeLog b/Master/texmf-dist/doc/generic/pgf/ChangeLog
index 36bdaba4433..55d9caa6ff7 100644
--- a/Master/texmf-dist/doc/generic/pgf/ChangeLog
+++ b/Master/texmf-dist/doc/generic/pgf/ChangeLog
@@ -1,3 +1,15 @@
+2020-01-08 Henri Menke
+
+    - Release 3.1.5b
+
+2020-01-08 Henri Menke
+
+    - CI: Try to fix the usual oberdiek shenanigans
+
+2020-01-08 Henri Menke
+
+    - Revert "Check \ifmeasuring@ #759"
+
 2019-12-21 Henri Menke
 
     Release 3.1.5a
diff --git a/Master/texmf-dist/doc/generic/pgf/pgfmanual.pdf b/Master/texmf-dist/doc/generic/pgf/pgfmanual.pdf
index 51d3c800959..ed818d8d3c1 100644
--- a/Master/texmf-dist/doc/generic/pgf/pgfmanual.pdf
+++ b/Master/texmf-dist/doc/generic/pgf/pgfmanual.pdf
diff --git a/Master/texmf-dist/tex/generic/pgf/frontendlayer/tikz/libraries/tikzexternalshared.code.tex b/Master/texmf-dist/tex/generic/pgf/frontendlayer/tikz/libraries/tikzexternalshared.code.tex
index 08fd794319b..55b387f13c6 100644
--- a/Master/texmf-dist/tex/generic/pgf/frontendlayer/tikz/libraries/tikzexternalshared.code.tex
+++ b/Master/texmf-dist/tex/generic/pgf/frontendlayer/tikz/libraries/tikzexternalshared.code.tex
@@ -749,13 +749,6 @@
     \fi
 }
 
-% amsmath signals the first pass of aligned environments with measuring@true.
-% This is just \measuring@false in case \ifmeasuring@ is not defined
-\def\pgf@marshal{\let\ifmeasuring@\iffalse}
-\ifdefined\ifmeasuring@\else
-    \expandafter\pgf@marshal
-\fi
-
 % Fills #1 with a filename for the current picture.
 %
 % The filename will be generated automatically by appending '-figure<number>' to the real jobname.
@@ -786,10 +779,8 @@
                     }{}%
                     \t@tikzexternal@tmpb=\expandafter{\tikzexternal@figurename}%
                     \xdef\pgf@tempa{\the\t@tikzexternal@tmpa\the\t@tikzexternal@tmpb\csname c@tikzext@no@\tikzexternal@figurename\endcsname}%
-                    \ifmeasuring@\else
-                        % advance the counter for 'figure name':
-                        \tikzexternal@getnextfilename@advancecount
-                    \fi
+                    % advance the counter for 'figure name':
+                    \tikzexternal@getnextfilename@advancecount
                 \fi
             \else
                 \t@tikzexternal@tmpb=\expandafter{\tikzexternal@nextfile}%
@@ -807,9 +798,7 @@
 
 \def\tikzexternal@getnextfilename@resetglobals{%
     % Reset global flags:
-    \ifmeasuring@\else
-        \global\let\tikzexternal@nextfile=\pgfutil@empty
-    \fi
+    \global\let\tikzexternal@nextfile=\pgfutil@empty
     \global\tikzexternalexportnexttrue
 }%
 
diff --git a/Master/texmf-dist/tex/generic/pgf/pgf.revision.tex b/Master/texmf-dist/tex/generic/pgf/pgf.revision.tex
index a22a494129d..86dd7442d22 100644
--- a/Master/texmf-dist/tex/generic/pgf/pgf.revision.tex
+++ b/Master/texmf-dist/tex/generic/pgf/pgf.revision.tex
@@ -5,10 +5,10 @@
 \catcode`\:=12
 \catcode`\+=12
 \catcode`\-=12
-\gdef\pgfrevision{3.1.5a}
-\gdef\pgfversion{3.1.5a}
-\gdef\pgfversiondatetime{2019-12-21 23:33:24 +1300}
-\gdef\pgfrevisiondatetime{2019-12-21 23:33:24 +1300}
+\gdef\pgfrevision{3.1.5b}
+\gdef\pgfversion{3.1.5b}
+\gdef\pgfversiondatetime{2020-01-08 10:30:17 +1300}
+\gdef\pgfrevisiondatetime{2020-01-08 10:30:17 +1300}
 \gdef\pgf@glob@TMPa#1-#2-#3 #4\relax{#1/#2/#3}
 \xdef\pgfversiondate{\expandafter\pgf@glob@TMPa\pgfversiondatetime\relax}
 \xdef\pgfrevisiondate{\expandafter\pgf@glob@TMPa\pgfrevisiondatetime\relax}
diff --git a/Master/texmf-dist/tex/latex/pgf/utilities/tikzexternal.sty b/Master/texmf-dist/tex/latex/pgf/utilities/tikzexternal.sty
index 75cb9aedb56..4f9d31572f6 100644
--- a/Master/texmf-dist/tex/latex/pgf/utilities/tikzexternal.sty
+++ b/Master/texmf-dist/tex/latex/pgf/utilities/tikzexternal.sty
@@ -69,10 +69,6 @@
 \def\tikz@opt@process#1#2{\tikzexternal@image}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
-\def\pgf@marshal{\let\ifmeasuring@\iffalse}
-\ifdefined\ifmeasuring@\else
-    \expandafter\pgf@marshal
-\fi
 \def\tikzexternal@image{%
     \leavevmode
     \begingroup
@@ -84,18 +80,14 @@
         \t@tikzexternal@tmpb=\expandafter{\tikzexternal@figurename}%
         \count0=\csname c@tikzext@no@\tikzexternal@figurename\endcsname
         \xdef\tikzexternal@curfilename{\the\t@tikzexternal@tmpa\the\t@tikzexternal@tmpb\the\count0 }%
-        \ifmeasuring@\else
-            \advance\count0 by1\relax
-        \fi
+        \advance\count0 by1\relax
         \expandafter\xdef\csname c@tikzext@no@\tikzexternal@figurename\endcsname{\the\count0 }%
     \else
         \t@tikzexternal@tmpb=\expandafter{\tikzexternal@nextfile}%
         \xdef\tikzexternal@curfilename{\the\t@tikzexternal@tmpa\the\t@tikzexternal@tmpb}%
     \fi
     \endgroup
-    \ifmeasuring@\else
-        \global\let\tikzexternal@nextfile=\empty
-    \fi
+    \global\let\tikzexternal@nextfile=\empty
     \pgfincludeexternalgraphics\tikzexternal@curfilename
 }%
 \def\tikzset#1{}\def\pgfkeys#1{}\def\pgfqkeys#1#2{}