(belated) \InputIfFileExists support, tex4ht r609

git-svn-id: svn://tug.org/texlive/trunk@54365 c570f23f-e606-0410-a88d-b1316a301751

6 files changed, 228 insertions, 114 deletions

diff --git a/Master/texmf-dist/tex/generic/tex4ht/docbook.4ht b/Master/texmf-dist/tex/generic/tex4ht/docbook.4ht
index 480f94cafa0..04e0f974e62 100644
--- a/Master/texmf-dist/tex/generic/tex4ht/docbook.4ht
+++ b/Master/texmf-dist/tex/generic/tex4ht/docbook.4ht
@@ -1,4 +1,4 @@
-% docbook.4ht (2019-07-06-14:23), generated from tex4ht-docbook.tex
+% docbook.4ht (2020-03-16-10:42), generated from tex4ht-docbook.tex
 % Copyright 2009-2019 TeX Users Group
 % Copyright 2000-2009 Eitan M. Gurari
 %
@@ -17,7 +17,7 @@
 %
 % If you modify this program, changing the
 % version identification would be appreciated.
-\immediate\write-1{version 2019-07-06-14:23}
+\immediate\write-1{version 2020-03-16-10:42}
 
 \exit:ifnot{Preamble,% 
 algorithmic,% 
@@ -258,6 +258,18 @@ switches of tex4ht.c)
    \fi
 }
 
+\ifx\InputIfFileExists\UnDef%
+\def\input:if:fileexists#1#2#3{%
+   \openin15 #1.4ht%
+   \ifeof15%
+   #3%
+   \else%
+   \input #1%
+   \fi\closein15%
+}%
+\else
+\let\input:if:fileexists\InputIfFileExists%
+\fi%
 \Hinclude{\input #1.4ht}{fontmath}
 \Hinclude{\@ifpackageloaded{colortbl}{%
       \no:dupl{array}{\input  array.4ht}%
@@ -271,16 +283,13 @@ switches of tex4ht.c)
    \else
       \let\:temp\empty
       \no:dupl{#1}{%
-         \openin15 #1.4ht
-         \ifeof15
-            \:CheckOption{debug}\if:Option
-               \:warning{No configuration file for
-                   #1.\if .#2.tex\else #2\fi}%
-            \fi
-            \let\:temp\empty
-         \else
-            \def\:temp{\input #1.4ht }%
-         \fi   \closein15
+        \def\:warn:msg{}
+        \:CheckOption{debug}\if:Option
+          \def\:warn:msg{%
+            \:warning{No configuration file for #1.\if .#2.tex\else #2\fi}%
+          }
+        \fi%
+        \def\:temp{\input:if:fileexists{#1.4ht}{}{\:warn:msg}}%
        }%
    \fi  \:temp}
 \edef\:temp{\noexpand\Hinclude
@@ -759,7 +768,7 @@ switches of tex4ht.c)
 \def\:gobbleM#1->{}
 \Configure{BODY}
    {\HCode{\Hnewline<!--translated from \jobname.tex
-     \Hnewline by TeX4ht  (http://tug.org/tex4ht/)
+     \Hnewline by TeX4ht  (https://tug.org/tex4ht/)
      \expandafter\:gobbleM\meaning\Preamble\space-->\Hnewline}
 \:CheckOption{-xtpipes} \if:Option
    \Log:Note{Use the `-xtpipes' command line option to
@@ -1073,7 +1082,7 @@ version="5.0"                                                \Hnewline
 \def\:gobbleM#1->{}
 \Configure{BODY}
    {\HCode{\Hnewline<!--translated from \jobname.tex
-     \Hnewline by TeX4ht  (http://tug.org/tex4ht/)
+     \Hnewline by TeX4ht  (https://tug.org/tex4ht/)
      \expandafter\:gobbleM\meaning\Preamble\space-->\Hnewline}
 \:CheckOption{-xtpipes} \if:Option
    \Log:Note{Use the `-xtpipes' command line option to
@@ -1392,7 +1401,7 @@ version="5.0"                                                \Hnewline
 \def\:gobbleM#1->{}
 \Configure{BODY}
    {\HCode{\Hnewline<!--translated from \jobname.tex
-     \Hnewline by TeX4ht  (http://tug.org/tex4ht/)
+     \Hnewline by TeX4ht  (https://tug.org/tex4ht/)
      \expandafter\:gobbleM\meaning\Preamble\space-->\Hnewline}
 \:CheckOption{-xtpipes} \if:Option
    \Log:Note{Use the `-xtpipes' command line option to
@@ -1687,14 +1696,13 @@ version="5.0"                                                \Hnewline
 
 
 
-
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
                 \ConfigureHinput{amsart}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
     \def\:gobbleM#1->{}
 \Configure{BODY}
    {\HCode{\Hnewline<!--translated from \jobname.tex
-     \Hnewline by TeX4ht  (http://tug.org/tex4ht/)
+     \Hnewline by TeX4ht  (https://tug.org/tex4ht/)
      \expandafter\:gobbleM\meaning\Preamble\space-->\Hnewline}
 \:CheckOption{-xtpipes} \if:Option
    \Log:Note{Use the `-xtpipes' command line option to
@@ -1971,7 +1979,7 @@ version="5.0"                                                \Hnewline
     \def\:gobbleM#1->{}
 \Configure{BODY}
    {\HCode{\Hnewline<!--translated from \jobname.tex
-     \Hnewline by TeX4ht  (http://tug.org/tex4ht/)
+     \Hnewline by TeX4ht  (https://tug.org/tex4ht/)
      \expandafter\:gobbleM\meaning\Preamble\space-->\Hnewline}
 \:CheckOption{-xtpipes} \if:Option
    \Log:Note{Use the `-xtpipes' command line option to
@@ -2247,7 +2255,7 @@ version="5.0"                                                \Hnewline
     \def\:gobbleM#1->{}
 \Configure{BODY}
    {\HCode{\Hnewline<!--translated from \jobname.tex
-     \Hnewline by TeX4ht  (http://tug.org/tex4ht/)
+     \Hnewline by TeX4ht  (https://tug.org/tex4ht/)
      \expandafter\:gobbleM\meaning\Preamble\space-->\Hnewline}
 \:CheckOption{-xtpipes} \if:Option
    \Log:Note{Use the `-xtpipes' command line option to
@@ -2680,7 +2688,7 @@ version="5.0"                                                \Hnewline
 \def\:gobbleM#1->{}
 \Configure{BODY}
    {\HCode{\Hnewline<!--translated from \jobname.tex
-     \Hnewline by TeX4ht  (http://tug.org/tex4ht/)
+     \Hnewline by TeX4ht  (https://tug.org/tex4ht/)
      \expandafter\:gobbleM\meaning\Preamble\space-->\Hnewline}
 \:CheckOption{-xtpipes} \if:Option
    \Log:Note{Use the `-xtpipes' command line option to
@@ -2742,7 +2750,6 @@ version="5.0"                                                \Hnewline
 
 
 
-
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
                 \ConfigureHinput{array}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -2947,6 +2954,7 @@ version="5.0"                                                \Hnewline
 
 
 
+
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
                 \ConfigureHinput{index}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -3010,7 +3018,6 @@ version="5.0"                                                \Hnewline
 \endinput\empty\empty\empty\empty\empty\empty
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
-
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
                 \ConfigureHinput{multind}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -3105,6 +3112,9 @@ version="5.0"                                                \Hnewline
 
 
 
+
+
+
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
                 \ConfigureHinput{memoir}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -3182,7 +3192,7 @@ version="5.0"                                                \Hnewline
 \def\:gobbleM#1->{}
 \Configure{BODY}
    {\HCode{\Hnewline<!--translated from \jobname.tex
-     \Hnewline by TeX4ht  (http://tug.org/tex4ht/)
+     \Hnewline by TeX4ht  (https://tug.org/tex4ht/)
      \expandafter\:gobbleM\meaning\Preamble\space-->\Hnewline}
 \:CheckOption{-xtpipes} \if:Option
    \Log:Note{Use the `-xtpipes' command line option to
@@ -3449,7 +3459,6 @@ version="5.0"                                                \Hnewline
 
 
 
-
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
                 \ConfigureHinput{dcolumn}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -3935,7 +3944,7 @@ version="5.0"                                                \Hnewline
 \def\:gobbleM#1->{}
 \Configure{BODY}
    {\HCode{\Hnewline<!--translated from \jobname.tex
-     \Hnewline by TeX4ht  (http://tug.org/tex4ht/)
+     \Hnewline by TeX4ht  (https://tug.org/tex4ht/)
      \expandafter\:gobbleM\meaning\Preamble\space-->\Hnewline}
 \:CheckOption{-xtpipes} \if:Option
    \Log:Note{Use the `-xtpipes' command line option to
@@ -4316,7 +4325,7 @@ version="5.0"                                                \Hnewline
 \def\:gobbleM#1->{}
 \Configure{BODY}
    {\HCode{\Hnewline<!--translated from \jobname.tex
-     \Hnewline by TeX4ht  (http://tug.org/tex4ht/)
+     \Hnewline by TeX4ht  (https://tug.org/tex4ht/)
      \expandafter\:gobbleM\meaning\Preamble\space-->\Hnewline}
 \:CheckOption{-xtpipes} \if:Option
    \Log:Note{Use the `-xtpipes' command line option to
@@ -4620,7 +4629,7 @@ version="5.0"                                                \Hnewline
 \def\:gobbleM#1->{}
 \Configure{BODY}
    {\HCode{\Hnewline<!--translated from \jobname.tex
-     \Hnewline by TeX4ht  (http://tug.org/tex4ht/)
+     \Hnewline by TeX4ht  (https://tug.org/tex4ht/)
      \expandafter\:gobbleM\meaning\Preamble\space-->\Hnewline}
 \:CheckOption{-xtpipes} \if:Option
    \Log:Note{Use the `-xtpipes' command line option to
@@ -4937,6 +4946,8 @@ version="5.0"                                                \Hnewline
 
 
 
+
+
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
                 \ConfigureHinput{prosper}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -4955,13 +4966,14 @@ version="5.0"                                                \Hnewline
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
 
+
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
                 \ConfigureHinput{beamer}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
     \def\:gobbleM#1->{}
 \Configure{BODY}
    {\HCode{\Hnewline<!--translated from \jobname.tex
-     \Hnewline by TeX4ht  (http://tug.org/tex4ht/)
+     \Hnewline by TeX4ht  (https://tug.org/tex4ht/)
      \expandafter\:gobbleM\meaning\Preamble\space-->\Hnewline}
 \:CheckOption{-xtpipes} \if:Option
    \Log:Note{Use the `-xtpipes' command line option to
@@ -5209,6 +5221,7 @@ version="5.0"                                                \Hnewline
 
 
 
+
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
                 \ConfigureHinput{pgf}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -5248,6 +5261,7 @@ version="5.0"                                                \Hnewline
 
 
 
+
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
                 \ConfigureHinput{subeqnarray}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -5278,6 +5292,8 @@ version="5.0"                                                \Hnewline
 
 
 
+
+
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
                 \ConfigureHinput{algorithmic}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -5327,8 +5343,6 @@ version="5.0"                                                \Hnewline
 
 
 
-
-
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
                 \ConfigureHinput{listings}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -5459,6 +5473,5 @@ version="5.0"                                                \Hnewline
 
 
 
-
 \endinput
 
diff --git a/Master/texmf-dist/tex/generic/tex4ht/html0.4ht b/Master/texmf-dist/tex/generic/tex4ht/html0.4ht
index 82008ecf573..2a639b41333 100644
--- a/Master/texmf-dist/tex/generic/tex4ht/html0.4ht
+++ b/Master/texmf-dist/tex/generic/tex4ht/html0.4ht
@@ -1,4 +1,4 @@
-% html0.4ht (2019-03-18-15:25), generated from tex4ht-html0.tex
+% html0.4ht (2020-02-18-14:18), generated from tex4ht-html0.tex
 % Copyright (C) 2009-2016 TeX Users Group
 % Copyright (C) 1996-2009 Eitan M. Gurari
 %
@@ -17,7 +17,7 @@
 %
 % If you modify this program, changing the
 % version identification would be appreciated.
-\immediate\write-1{version 2019-03-18-15:25}
+\immediate\write-1{version 2020-02-18-14:18}
 
 \exit:ifnot{Preamble,% 
 aa,% 
@@ -273,6 +273,18 @@ vanilla}
    \fi
 }
 
+\ifx\InputIfFileExists\UnDef%
+\def\input:if:fileexists#1#2#3{%
+   \openin15 #1.4ht%
+   \ifeof15%
+   #3%
+   \else%
+   \input #1%
+   \fi\closein15%
+}%
+\else
+\let\input:if:fileexists\InputIfFileExists%
+\fi%
 \Hinclude{\input #1.4ht}{fontmath}
 \Hinclude{\@ifpackageloaded{colortbl}{%
       \no:dupl{array}{\input  array.4ht}%
@@ -286,16 +298,13 @@ vanilla}
    \else
       \let\:temp\empty
       \no:dupl{#1}{%
-         \openin15 #1.4ht
-         \ifeof15
-            \:CheckOption{debug}\if:Option
-               \:warning{No configuration file for
-                   #1.\if .#2.tex\else #2\fi}%
-            \fi
-            \let\:temp\empty
-         \else
-            \def\:temp{\input #1.4ht }%
-         \fi   \closein15
+        \def\:warn:msg{}
+        \:CheckOption{debug}\if:Option
+          \def\:warn:msg{%
+            \:warning{No configuration file for #1.\if .#2.tex\else #2\fi}%
+          }
+        \fi%
+        \def\:temp{\input:if:fileexists{#1.4ht}{}{\:warn:msg}}%
        }%
    \fi  \:temp}
 \edef\:temp{\noexpand\Hinclude
@@ -1049,6 +1058,7 @@ vanilla}
 
 
 
+
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
                 \ConfigureHinput{graphics}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -1078,6 +1088,7 @@ vanilla}
 
 
 
+
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
                 \ConfigureHinput{amsart}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -1090,6 +1101,7 @@ vanilla}
 \endinput\empty\empty\empty\empty\empty\empty
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
+
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
                 \ConfigureHinput{amsbook}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -1124,7 +1136,6 @@ vanilla}
 
 
 
-
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
                 \ConfigureHinput{amsppt}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -1137,6 +1148,7 @@ vanilla}
 \endinput\empty\empty\empty\empty\empty\empty
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
+
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
                 \ConfigureHinput{babel}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -1163,6 +1175,7 @@ vanilla}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
 
+
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
                 \ConfigureHinput{plain}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -1398,7 +1411,6 @@ vanilla}
 
 
 
-
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
                 \ConfigureHinput{url}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -1437,6 +1449,9 @@ vanilla}
 
 
 
+
+
+
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
                 \ConfigureHinput{moreverb}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -1452,6 +1467,7 @@ vanilla}
 
 
 
+
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
                 \ConfigureHinput{psfig}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -1483,6 +1499,7 @@ vanilla}
 
 
 
+
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
                 \ConfigureHinput{index}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -1508,6 +1525,10 @@ vanilla}
 
 
 
+
+
+
+
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
                 \ConfigureHinput{vanilla}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -1622,8 +1643,6 @@ vanilla}
 
 
 
-
-
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
                 \ConfigureHinput{aa}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -1748,6 +1767,7 @@ vanilla}
 
 
 
+
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
                 \ConfigureHinput{slidesec}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -1866,7 +1886,6 @@ vanilla}
 
 
 
-
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
                 \ConfigureHinput{th4}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -1958,5 +1977,8 @@ vanilla}
 
 
 
+
+
+
 \endinput
 
diff --git a/Master/texmf-dist/tex/generic/tex4ht/html32.4ht b/Master/texmf-dist/tex/generic/tex4ht/html32.4ht
index 4d98d0c28a0..af9a521548e 100644
--- a/Master/texmf-dist/tex/generic/tex4ht/html32.4ht
+++ b/Master/texmf-dist/tex/generic/tex4ht/html32.4ht
@@ -1,4 +1,4 @@
-% html32.4ht (2019-03-18-15:25), generated from tex4ht-html32.tex
+% html32.4ht (2020-02-18-14:18), generated from tex4ht-html32.tex
 % Copyright (C) 2009-2016 TeX Users Group
 % Copyright (C) 1997-2009 Eitan M. Gurari
 %
@@ -17,7 +17,7 @@
 %
 % If you modify this program, changing the
 % version identification would be appreciated.
-\immediate\write-1{version 2019-03-18-15:25}
+\immediate\write-1{version 2020-02-18-14:18}
 
 \exit:ifnot{CJK,% 
 Preamble,% 
@@ -668,6 +668,18 @@ j{01F0}H{021E}h{021F}\i{01D0}\j{01F0}%
    \fi
 }
 
+\ifx\InputIfFileExists\UnDef%
+\def\input:if:fileexists#1#2#3{%
+   \openin15 #1.4ht%
+   \ifeof15%
+   #3%
+   \else%
+   \input #1%
+   \fi\closein15%
+}%
+\else
+\let\input:if:fileexists\InputIfFileExists%
+\fi%
 \Hinclude{\input #1.4ht}{fontmath}
 \Hinclude{\@ifpackageloaded{colortbl}{%
       \no:dupl{array}{\input  array.4ht}%
@@ -681,16 +693,13 @@ j{01F0}H{021E}h{021F}\i{01D0}\j{01F0}%
    \else
       \let\:temp\empty
       \no:dupl{#1}{%
-         \openin15 #1.4ht
-         \ifeof15
-            \:CheckOption{debug}\if:Option
-               \:warning{No configuration file for
-                   #1.\if .#2.tex\else #2\fi}%
-            \fi
-            \let\:temp\empty
-         \else
-            \def\:temp{\input #1.4ht }%
-         \fi   \closein15
+        \def\:warn:msg{}
+        \:CheckOption{debug}\if:Option
+          \def\:warn:msg{%
+            \:warning{No configuration file for #1.\if .#2.tex\else #2\fi}%
+          }
+        \fi%
+        \def\:temp{\input:if:fileexists{#1.4ht}{}{\:warn:msg}}%
        }%
    \fi  \:temp}
 \edef\:temp{\noexpand\Hinclude
@@ -7156,6 +7165,7 @@ j{01F0}H{021E}h{021F}\i{01D0}\j{01F0}%
 
 
 
+
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
                 \ConfigureHinput{graphics}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -7185,6 +7195,7 @@ j{01F0}H{021E}h{021F}\i{01D0}\j{01F0}%
 
 
 
+
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
                 \ConfigureHinput{amsart}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -7361,7 +7372,6 @@ j{01F0}H{021E}h{021F}\i{01D0}\j{01F0}%
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
 
-
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
                 \ConfigureHinput{amsmath}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -7377,6 +7387,7 @@ j{01F0}H{021E}h{021F}\i{01D0}\j{01F0}%
 \endinput\empty\empty\empty\empty\empty\empty
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
+
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
                 \ConfigureHinput{amsfonts}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -7393,7 +7404,6 @@ j{01F0}H{021E}h{021F}\i{01D0}\j{01F0}%
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
 
-
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
                 \ConfigureHinput{amstex1}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -7436,6 +7446,7 @@ j{01F0}H{021E}h{021F}\i{01D0}\j{01F0}%
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
 
+
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
                 \ConfigureHinput{amsppt}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -7517,6 +7528,7 @@ j{01F0}H{021E}h{021F}\i{01D0}\j{01F0}%
 \endinput\empty\empty\empty\empty\empty\empty
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
+
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
                 \ConfigureHinput{babel}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -7543,6 +7555,7 @@ j{01F0}H{021E}h{021F}\i{01D0}\j{01F0}%
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
 
+
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
                 \ConfigureHinput{plain}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -8104,7 +8117,6 @@ j{01F0}H{021E}h{021F}\i{01D0}\j{01F0}%
 
 
 
-
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
                 \ConfigureHinput{seslideb}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -8452,6 +8464,8 @@ j{01F0}H{021E}h{021F}\i{01D0}\j{01F0}%
 
 
 
+
+
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
                 \ConfigureHinput{CJK}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -8465,6 +8479,7 @@ j{01F0}H{021E}h{021F}\i{01D0}\j{01F0}%
 
 
 
+
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
                 \ConfigureHinput{moreverb}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -8481,6 +8496,7 @@ j{01F0}H{021E}h{021F}\i{01D0}\j{01F0}%
 \endinput\empty\empty\empty\empty\empty\empty
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
+
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
                 \ConfigureHinput{fancyvrb}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -8614,6 +8630,7 @@ j{01F0}H{021E}h{021F}\i{01D0}\j{01F0}%
 \endinput\empty\empty\empty\empty\empty\empty
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
+
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
                 \ConfigureHinput{index}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -8639,6 +8656,10 @@ j{01F0}H{021E}h{021F}\i{01D0}\j{01F0}%
 
 
 
+
+
+
+
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
                 \ConfigureHinput{vanilla}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -8703,6 +8724,7 @@ j{01F0}H{021E}h{021F}\i{01D0}\j{01F0}%
 
 
 
+
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
                 \ConfigureHinput{ntheorem}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -8788,6 +8810,7 @@ j{01F0}H{021E}h{021F}\i{01D0}\j{01F0}%
 
 
 
+
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
                 \ConfigureHinput{frenchb}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -8871,8 +8894,6 @@ j{01F0}H{021E}h{021F}\i{01D0}\j{01F0}%
 
 
 
-
-
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
                 \ConfigureHinput{emulateapj}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -8902,8 +8923,6 @@ j{01F0}H{021E}h{021F}\i{01D0}\j{01F0}%
 
 
 
-
-
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
                 \ConfigureHinput{aa}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -9135,6 +9154,7 @@ j{01F0}H{021E}h{021F}\i{01D0}\j{01F0}%
 
 
 
+
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
                 \ConfigureHinput{seminar}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -9385,7 +9405,6 @@ j{01F0}H{021E}h{021F}\i{01D0}\j{01F0}%
 \endinput\empty\empty\empty\empty\empty\empty
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
-
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
                 \ConfigureHinput{th4}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -9611,5 +9630,8 @@ j{01F0}H{021E}h{021F}\i{01D0}\j{01F0}%
 
 
 
+
+
+
 \endinput
 
diff --git a/Master/texmf-dist/tex/generic/tex4ht/ooffice.4ht b/Master/texmf-dist/tex/generic/tex4ht/ooffice.4ht
index 022b22bfe18..2a6dd11864d 100644
--- a/Master/texmf-dist/tex/generic/tex4ht/ooffice.4ht
+++ b/Master/texmf-dist/tex/generic/tex4ht/ooffice.4ht
@@ -1,4 +1,4 @@
-% ooffice.4ht (2019-09-12-14:02), generated from tex4ht-ooffice.tex
+% ooffice.4ht (2020-02-18-14:19), generated from tex4ht-ooffice.tex
 % Copyright 2009-2019 TeX Users Group
 % Copyright 2001-2009 Maarten Wisse, James Naughton, Eitan M. Gurari
 %
@@ -17,7 +17,7 @@
 %
 % If you modify this program, changing the
 % version identification would be appreciated.
-\immediate\write-1{version 2019-09-12-14:02}
+\immediate\write-1{version 2020-02-18-14:19}
 
   \exit:ifnot{Preamble,% 
 algorithmicx,% 
@@ -751,6 +751,18 @@ xmlns:presentation="urn:oasis:names:tc:opendocument:xmlns:presentation:1.0"\Hnew
    \fi
 }
 
+\ifx\InputIfFileExists\UnDef%
+\def\input:if:fileexists#1#2#3{%
+   \openin15 #1.4ht%
+   \ifeof15%
+   #3%
+   \else%
+   \input #1%
+   \fi\closein15%
+}%
+\else
+\let\input:if:fileexists\InputIfFileExists%
+\fi%
 \Hinclude{\input #1.4ht}{fontmath}
 \Hinclude{\@ifpackageloaded{colortbl}{%
       \no:dupl{array}{\input  array.4ht}%
@@ -764,16 +776,13 @@ xmlns:presentation="urn:oasis:names:tc:opendocument:xmlns:presentation:1.0"\Hnew
    \else
       \let\:temp\empty
       \no:dupl{#1}{%
-         \openin15 #1.4ht
-         \ifeof15
-            \:CheckOption{debug}\if:Option
-               \:warning{No configuration file for
-                   #1.\if .#2.tex\else #2\fi}%
-            \fi
-            \let\:temp\empty
-         \else
-            \def\:temp{\input #1.4ht }%
-         \fi   \closein15
+        \def\:warn:msg{}
+        \:CheckOption{debug}\if:Option
+          \def\:warn:msg{%
+            \:warning{No configuration file for #1.\if .#2.tex\else #2\fi}%
+          }
+        \fi%
+        \def\:temp{\input:if:fileexists{#1.4ht}{}{\:warn:msg}}%
        }%
    \fi  \:temp}
 \edef\:temp{\noexpand\Hinclude
@@ -6978,7 +6987,6 @@ style:display-name="Footnote anchor" style:family="text">
 
 
 
-
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
                 \ConfigureHinput{footnote-dw}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -8252,7 +8260,6 @@ Y{0178}\i{00EF}%
 
 
 
-
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
                 \ConfigureHinput{url}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -8639,6 +8646,9 @@ Y{0178}\i{00EF}%
 
 
 
+
+
+
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
                 \ConfigureHinput{verse}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -8778,7 +8788,6 @@ Y{0178}\i{00EF}%
 
 
 
-
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
                 \ConfigureHinput{apacite}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -13431,6 +13440,10 @@ Y{0178}\i{00EF}%
 
 
 
+
+
+
+
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
                 \ConfigureHinput{slides}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -13716,7 +13729,6 @@ Y{0178}\i{00EF}%
 
 
 
-
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
                 \ConfigureHinput{pstricks}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -13740,6 +13752,7 @@ Y{0178}\i{00EF}%
 \endinput\empty\empty\empty\empty\empty\empty
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
+
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
                 \ConfigureHinput{pst-all}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -13770,6 +13783,7 @@ Y{0178}\i{00EF}%
 
 
 
+
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
                 \ConfigureHinput{curve}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -14028,6 +14042,7 @@ Y{0178}\i{00EF}%
 
 
 
+
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
                 \ConfigureHinput{enumerate}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -14133,7 +14148,6 @@ Y{0178}\i{00EF}%
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
 
-
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
                 \ConfigureHinput{linguex}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -14217,6 +14231,7 @@ Y{0178}\i{00EF}%
 \endinput\empty\empty\empty\empty\empty\empty
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
+
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
                 \ConfigureHinput{covington}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -14486,7 +14501,6 @@ Y{0178}\i{00EF}%
 
 
 
-
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
                 \ConfigureHinput{ulem}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -14553,7 +14567,6 @@ Y{0178}\i{00EF}%
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
 
-
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
                 \ConfigureHinput{paralist}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -14848,6 +14861,7 @@ Y{0178}\i{00EF}%
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
 
+
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
                 \ConfigureHinput{listings}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -14972,7 +14986,6 @@ Y{0178}\i{00EF}%
 \endinput\empty\empty\empty\empty\empty\empty
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
-
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
                 \ConfigureHinput{lineno}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -15107,7 +15120,6 @@ Y{0178}\i{00EF}%
 
 
 
-
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
                 \ConfigureHinput{soul}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -15261,5 +15273,6 @@ Y{0178}\i{00EF}%
 
 
 
+
 \endinput
 
diff --git a/Master/texmf-dist/tex/generic/tex4ht/ooimpress.4ht b/Master/texmf-dist/tex/generic/tex4ht/ooimpress.4ht
index 77abc97418e..fe6f63aaee0 100644
--- a/Master/texmf-dist/tex/generic/tex4ht/ooimpress.4ht
+++ b/Master/texmf-dist/tex/generic/tex4ht/ooimpress.4ht
@@ -1,4 +1,4 @@
-% ooimpress.4ht (2019-03-18-15:26), generated from tex4ht-ooimpress.tex
+% ooimpress.4ht (2020-02-18-14:19), generated from tex4ht-ooimpress.tex
 % Copyright (C) 2009-2010 TeX Users Group
 % Copyright (C) 2001-2009 Eitan M. Gurari
 %
@@ -17,7 +17,7 @@
 %
 % If you modify this program, changing the
 % version identification would be appreciated.
-\immediate\write-1{version 2019-03-18-15:26}
+\immediate\write-1{version 2020-02-18-14:19}
 
 \exit:ifnot{foils,% 
 g-brief,% 
@@ -88,6 +88,18 @@ tex4ht}
    \fi
 }
 
+\ifx\InputIfFileExists\UnDef%
+\def\input:if:fileexists#1#2#3{%
+   \openin15 #1.4ht%
+   \ifeof15%
+   #3%
+   \else%
+   \input #1%
+   \fi\closein15%
+}%
+\else
+\let\input:if:fileexists\InputIfFileExists%
+\fi%
 \Hinclude{\input #1.4ht}{fontmath}
 \Hinclude{\@ifpackageloaded{colortbl}{%
       \no:dupl{array}{\input  array.4ht}%
@@ -101,16 +113,13 @@ tex4ht}
    \else
       \let\:temp\empty
       \no:dupl{#1}{%
-         \openin15 #1.4ht
-         \ifeof15
-            \:CheckOption{debug}\if:Option
-               \:warning{No configuration file for
-                   #1.\if .#2.tex\else #2\fi}%
-            \fi
-            \let\:temp\empty
-         \else
-            \def\:temp{\input #1.4ht }%
-         \fi   \closein15
+        \def\:warn:msg{}
+        \:CheckOption{debug}\if:Option
+          \def\:warn:msg{%
+            \:warning{No configuration file for #1.\if .#2.tex\else #2\fi}%
+          }
+        \fi%
+        \def\:temp{\input:if:fileexists{#1.4ht}{}{\:warn:msg}}%
        }%
    \fi  \:temp}
 \edef\:temp{\noexpand\Hinclude
@@ -242,6 +251,10 @@ tex4ht}
 
 
 
+
+
+
+
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
                 \ConfigureHinput{plain}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -496,6 +509,13 @@ tex4ht}
 
 
 
+
+
+
+
+
+
+
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
                 \ConfigureHinput{g-brief}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -883,5 +903,7 @@ tex4ht}
 
 
 
+
+
 \endinput
 
diff --git a/Master/texmf-dist/tex/generic/tex4ht/tei.4ht b/Master/texmf-dist/tex/generic/tex4ht/tei.4ht
index b1888a42127..3926ab9ce09 100644
--- a/Master/texmf-dist/tex/generic/tex4ht/tei.4ht
+++ b/Master/texmf-dist/tex/generic/tex4ht/tei.4ht
@@ -1,4 +1,4 @@
-% tei.4ht (2019-03-18-15:26), generated from tex4ht-tei.tex
+% tei.4ht (2020-02-18-14:19), generated from tex4ht-tei.tex
 % Copyright 2009-2019 TeX Users Group
 % Copyright 2000-2009 Eitan M. Gurari
 %
@@ -17,7 +17,7 @@
 %
 % If you modify this program, changing the
 % version identification would be appreciated.
-\immediate\write-1{version 2019-03-18-15:26}
+\immediate\write-1{version 2020-02-18-14:19}
 
 \exit:ifnot{Preamble,% 
 amsart,% 
@@ -205,6 +205,18 @@ url}
    \fi
 }
 
+\ifx\InputIfFileExists\UnDef%
+\def\input:if:fileexists#1#2#3{%
+   \openin15 #1.4ht%
+   \ifeof15%
+   #3%
+   \else%
+   \input #1%
+   \fi\closein15%
+}%
+\else
+\let\input:if:fileexists\InputIfFileExists%
+\fi%
 \Hinclude{\input #1.4ht}{fontmath}
 \Hinclude{\@ifpackageloaded{colortbl}{%
       \no:dupl{array}{\input  array.4ht}%
@@ -218,16 +230,13 @@ url}
    \else
       \let\:temp\empty
       \no:dupl{#1}{%
-         \openin15 #1.4ht
-         \ifeof15
-            \:CheckOption{debug}\if:Option
-               \:warning{No configuration file for
-                   #1.\if .#2.tex\else #2\fi}%
-            \fi
-            \let\:temp\empty
-         \else
-            \def\:temp{\input #1.4ht }%
-         \fi   \closein15
+        \def\:warn:msg{}
+        \:CheckOption{debug}\if:Option
+          \def\:warn:msg{%
+            \:warning{No configuration file for #1.\if .#2.tex\else #2\fi}%
+          }
+        \fi%
+        \def\:temp{\input:if:fileexists{#1.4ht}{}{\:warn:msg}}%
        }%
    \fi  \:temp}
 \edef\:temp{\noexpand\Hinclude
@@ -1047,6 +1056,7 @@ url}
 
 
 
+
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
                 \ConfigureHinput{graphics}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -1080,6 +1090,7 @@ url}
 
 
 
+
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
                 \ConfigureHinput{amsart}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -1277,6 +1288,8 @@ url}
 
 
 
+
+
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
                 \ConfigureHinput{plain}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -1469,7 +1482,6 @@ url}
 
 
 
-
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
                 \ConfigureHinput{url}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -1740,6 +1752,14 @@ url}
 
 
 
+
+
+
+
+
+
+
+
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
                 \ConfigureHinput{ltugboat}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -1923,5 +1943,7 @@ url}
 
 
 
+
+
 \endinput