1 files changed, 65 insertions, 49 deletions
diff --git a/Master/texmf-dist/tex/generic/oberdiek/ifluatex.sty b/Master/texmf-dist/tex/generic/oberdiek/ifluatex.sty
index 30e604e2c7e..88905e0a284 100644
--- a/Master/texmf-dist/tex/generic/oberdiek/ifluatex.sty
+++ b/Master/texmf-dist/tex/generic/oberdiek/ifluatex.sty
@@ -88,7 +88,7 @@
   \fi
 \expandafter\x\csname ver@ifluatex.sty\endcsname
 \ProvidesPackage{ifluatex}%
-  [2009/04/10 v1.1 Provides the ifluatex switch (HO)]
+  [2009/04/17 v1.2 Provides the ifluatex switch (HO)]
 \begingroup
   \catcode123 1 % {
   \catcode125 2 % }
@@ -121,29 +121,32 @@
 \TMP@EnsureCode{46}{12}% .
 \TMP@EnsureCode{47}{12}% /
 \TMP@EnsureCode{58}{12}% :
+\TMP@EnsureCode{60}{12}% <
 \TMP@EnsureCode{61}{12}% =
 \TMP@EnsureCode{94}{7}% ^
 \TMP@EnsureCode{96}{12}% `
+\begingroup\expandafter\expandafter\expandafter\endgroup
+\expandafter\ifx\csname PackageError\endcsname\relax
+  \def\ifluatex@Error#1#2{%
+    \begingroup
+      \newlinechar=10 %
+      \def\MessageBreak{^^J}%
+      \edef\x{\errhelp{#2}}%
+      \x
+      \errmessage{Package ifluatex Error: #1}%
+    \endgroup
+  }%
+\else
+  \def\ifluatex@Error{%
+    \PackageError{ifluatex}%
+  }%
+\fi
 \begingroup
   \expandafter\ifx\csname ifluatex\endcsname\relax
   \else
     \edef\i/{\expandafter\string\csname ifluatex\endcsname}%
-    \expandafter\ifx\csname PackageError\endcsname\relax
-      \def\x#1#2{%
-        \edef\z{#2}%
-        \expandafter\errhelp\expandafter{\z}%
-        \errmessage{Package ifluatex Error: #1}%
-      }%
-      \def\y{^^J}%
-      \newlinechar=10 %
-    \else
-      \def\x#1#2{%
-        \PackageError{ifluatex}{#1}{#2}%
-      }%
-      \def\y{\MessageBreak}%
-    \fi
-    \x{Name clash, \i/ is already defined}{%
-      Incompatible versions of \i/ can cause problems,\y
+    \ifluatex@Error{Name clash, \i/ is already defined}{%
+      Incompatible versions of \i/ can cause problems,\MessageBreak
       therefore package loading is aborted.%
     }%
     \endgroup
@@ -151,57 +154,35 @@
     \expandafter\endinput
   \fi
 \endgroup
-\begingroup
-  \expandafter\ifx\csname newif\endcsname\relax
-    \def\x#1#2{#1}%
-  \else
-    \def\x#1#2{#2}%
-  \fi
-\expandafter\endgroup\x
-{%
-  \let\ifluatex\iffalse
-  \def\luatextrue{%
-    \let\ifluatex\iftrue
-  }%
-  \def\luatexfalse{%
-    \let\luatexfalse
-  }%
-}{%
-  \csname newif\endcsname\ifluatex
-}
+\let\ifluatex\iffalse
 \begingroup\expandafter\expandafter\expandafter\endgroup
 \expandafter\ifx\csname luatexversion\endcsname\relax
 \else
-  \luatextrue
+  \expandafter\let\csname ifluatex\expandafter\endcsname
+                  \csname iftrue\endcsname
 \fi
 \ifluatex
 \else
   \begingroup\expandafter\expandafter\expandafter\endgroup
   \expandafter\ifx\csname directlua\endcsname\relax
   \else
-    \luatextrue
+    \expandafter\let\csname ifluatex\expandafter\endcsname
+                    \csname iftrue\endcsname
     \begingroup
       \newlinechar=10 %
       \endlinechar=\newlinechar %
-      \ifcase0%
+      \ifnum0%
           \directlua{%
             if tex.enableprimitives then
               tex.enableprimitives('ifluatex', {'luatexversion'})
-            else
               tex.print('1')
             end
           }%
-          \ifx\ifluatexluatexversion\@undefined 1\fi %
-          \relax %
-        \global\let\luatexversion\ifluatexluatexversion
+          \ifx\ifluatexluatexversion\@undefined\else 1\fi %
+          =11 %
+        \global\let\luatexversion\ifluatexluatexversion %
       \else %
-        \expandafter\ifx\csname PackageError\endcsname\relax %
-          \def\PackageError#1#2#3{%
-            \errhelp{#3}%
-            \errmessage{Package `#1' Error: #2}%
-          }%
-        \fi %
-        \PackageError{ifluatex}{%
+        \ifluatex@Error{%
           Missing \string\luatexversion%
         }{%
           Update LuaTeX.%
@@ -210,6 +191,41 @@
     \endgroup %
   \fi
 \fi
+\ifluatex
+  \begingroup\expandafter\expandafter\expandafter\endgroup
+  \expandafter\ifx\csname luatexrevision\endcsname\relax
+    \ifnum\luatexversion<36 %
+    \else
+      \begingroup
+        \ifx\luatexrevision\relax
+          \let\luatexrevision\@undefined
+        \fi
+        \newlinechar=10 %
+        \endlinechar=\newlinechar %
+        \ifcase0%
+            \directlua{%
+              if tex.enableprimitives then
+                tex.enableprimitives('ifluatex', {'luatexrevision'})
+              else
+                tex.print('1')
+              end
+            }%
+            \ifx\ifluatexluatexrevision\@undefined 1\fi %
+            \relax %
+          \global\let\luatexrevision\ifluatexluatexrevision
+        \fi
+      \endgroup
+    \fi
+    \begingroup\expandafter\expandafter\expandafter\endgroup
+    \expandafter\ifx\csname luatexrevision\endcsname\relax
+      \ifluatex@Error{%
+        Missing \string\luatexrevision%
+      }{%
+        Update LuaTeX.%
+      }%
+    \fi
+  \fi
+\fi
 \begingroup
   \expandafter\ifx\csname PackageInfo\endcsname\relax
     \def\x#1#2{%