Fix invalid html in longtable captions
https://puszcza.gnu.org.ua/bugs/?315
https://bugs.gentoo.org/963668

r1745 | michal_h21 | 2025-10-01 13:41:06 +0200 (Wed, 01 Oct 2025) | 1 line
don't put longtable caption inside <tr>

r1747 | michal_h21 | 2025-10-02 12:35:43 +0200 (Thu, 02 Oct 2025) | 1 line
prevent p end tags in logntable captions

--- a/texmf/tex/generic/tex4ht/longtable.4ht
+++ b/texmf/tex/generic/tex4ht/longtable.4ht
@@ -211,8 +211,8 @@
 \HLet\LT@caption\:tempc
 \NewConfigure{longtablecaption}{4}
 \def\:tempc#1#2#3{%
-    \a:longtablecaption #1{\cap:ref{#2}}\if\relax\detokenize{#1}\relax\else\b:longtablecaption\fi\c:longtablecaption#3\d:longtablecaption
-    \endgraf%\vskip\baselineskip <- this caused error in https://tex.stackexchange.com/q/682383/2891
+    \o:noalign:{\a:longtablecaption #1{\cap:ref{#2}}\if\relax\detokenize{#1}\relax\else\b:longtablecaption\fi\c:longtablecaption#3\d:longtablecaption
+    \endgraf}%\vskip\baselineskip <- this caused error in https://tex.stackexchange.com/q/682383/2891
  }
 \HLet\LT@makecaption\:tempc
 \def\:tempc#1[#2]#3{%
--- a/texmf/tex/generic/tex4ht/html4.4ht
+++ b/texmf/tex/generic/tex4ht/html4.4ht
@@ -21237,7 +21237,7 @@
 \Css{div.longtable{text-align:center;}}
 \Css{table.longtable{margin-left:auto; margin-right: auto;}}
 \Configure{longtableparbox}{\IgnorePar\leavevmode\ShowPar\par}
-\Configure{longtablecaption}{\ifvmode\IgnorePar\fi\EndP\HCode{<caption class="longtable">}\par\ShowPar\HCode{<span class="id">}}{:\ }{\HCode{</span><span class="content">}}{\HCode{</span>}\ifvmode\IgnorePar\fi\EndP\HCode{</caption>}}
+\Configure{longtablecaption}{\ifvmode\IgnorePar\fi\HCode{<caption class="longtable">}\HCode{<span class="id">}}{:\ }{\HCode{</span><span class="content">}}{\HCode{</span>}\ifvmode\IgnorePar\fi\HCode{</caption>}}
 
 \Css{caption.longtable .id{font-weight:bold;}}