From e13aa5c0157744de262ac512cc95a76a4562e37b Mon Sep 17 00:00:00 2001
From: John MacFarlane <jgm@berkeley.edu>
Date: Tue, 16 Sep 2025 17:59:42 +0200
Subject: [PATCH] LaTeX writer: ensure that unlabelled tables don't increment
 counter.

Closes #11141.
---
 src/Text/Pandoc/Writers/LaTeX/Table.hs | 4 +++-
 test/command/7272.md                   | 2 ++
 test/command/8638.md                   | 2 ++
 test/command/9350.md                   | 2 ++
 test/tables.latex                      | 8 ++++++++
 5 files changed, 17 insertions(+), 1 deletion(-)

diff --git a/src/Text/Pandoc/Writers/LaTeX/Table.hs b/src/Text/Pandoc/Writers/LaTeX/Table.hs
index 5eea02116..79025ded3 100644
--- a/src/Text/Pandoc/Writers/LaTeX/Table.hs
+++ b/src/Text/Pandoc/Writers/LaTeX/Table.hs
@@ -98,8 +98,10 @@ tableToLaTeX inlnsToLaTeX blksToLaTeX tbl = do
   modify $ \s -> s{ stTable = True }
   notes <- notesToLaTeX <$> gets stNotes
   beamer <- gets stBeamer
+  let makeUnnumbered x = "{\\def\\LTcaptype{} % do not increment counter" $$ x $$ "}"
   return
-    $  "\\begin{longtable}[]" <>
+    $ (if null capt then makeUnnumbered else id)
+    $ "\\begin{longtable}[]" <>
           braces ("@{}" <> colDescriptors isSimpleTable tbl <> "@{}")
           -- the @{} removes extra space at beginning and end
     $$ head'
diff --git a/test/command/7272.md b/test/command/7272.md
index 9a97abf57..0daf2a2d4 100644
--- a/test/command/7272.md
+++ b/test/command/7272.md
@@ -14,6 +14,7 @@
   </tbody>
 </table>
 ^D
+{\def\LTcaptype{} % do not increment counter
 \begin{longtable}[]{@{}
   >{\raggedright\arraybackslash}p{(\linewidth - 0\tabcolsep) * \real{1.0000}}@{}}
 \toprule\noalign{}
@@ -25,4 +26,5 @@
 text2 }\strut
 \end{minipage} \\
 \end{longtable}
+}
 ```
diff --git a/test/command/8638.md b/test/command/8638.md
index 2da8ded01..e77396aa8 100644
--- a/test/command/8638.md
+++ b/test/command/8638.md
@@ -7,6 +7,7 @@
 | oranges | 4.25  |
 ^D
 \begin{frame}
+{\def\LTcaptype{} % do not increment counter
 \begin{longtable}[]{@{}lr@{}}
 \toprule\noalign{}
 fruit & price \\
@@ -16,5 +17,6 @@ apple & 2.05 \\
 oranges & 4.25 \\
 \bottomrule\noalign{}
 \end{longtable}
+}
 \end{frame}
 ```
diff --git a/test/command/9350.md b/test/command/9350.md
index d641f8b76..205f29271 100644
--- a/test/command/9350.md
+++ b/test/command/9350.md
@@ -2,6 +2,7 @@
 % pandoc -f html -t latex
 <table><tbody><tr></tr></tbody></table>
 ^D
+{\def\LTcaptype{} % do not increment counter
 \begin{longtable}[]{@{}l@{}}
 \toprule\noalign{}
 \endhead
@@ -9,4 +10,5 @@
 \endlastfoot
  \\
 \end{longtable}
+}
 ```
diff --git a/test/tables.latex b/test/tables.latex
index 6bb80df81..e29780883 100644
--- a/test/tables.latex
+++ b/test/tables.latex
@@ -19,6 +19,7 @@ Right & Left & Center & Default \\
 
 Simple table without caption:
 
+{\def\LTcaptype{} % do not increment counter
 \begin{longtable}[]{@{}rlcl@{}}
 \toprule\noalign{}
 Right & Left & Center & Default \\
@@ -30,6 +31,7 @@ Right & Left & Center & Default \\
 123 & 123 & 123 & 123 \\
 1 & 1 & 1 & 1 \\
 \end{longtable}
+}
 
 Simple table indented two spaces:
 
@@ -90,6 +92,7 @@ Second & row & 5.0 & Here's another one. Note the blank line between rows. \\
 
 Multiline table without caption:
 
+{\def\LTcaptype{} % do not increment counter
 \begin{longtable}[]{@{}
   >{\centering\arraybackslash}p{(\linewidth - 6\tabcolsep) * \real{0.1500}}
   >{\raggedright\arraybackslash}p{(\linewidth - 6\tabcolsep) * \real{0.1375}}
@@ -112,9 +115,11 @@ Default aligned
 First & row & 12.0 & Example of a row that spans multiple lines. \\
 Second & row & 5.0 & Here's another one. Note the blank line between rows. \\
 \end{longtable}
+}
 
 Table without column headers:
 
+{\def\LTcaptype{} % do not increment counter
 \begin{longtable}[]{@{}rlcr@{}}
 \toprule\noalign{}
 \endhead
@@ -124,9 +129,11 @@ Table without column headers:
 123 & 123 & 123 & 123 \\
 1 & 1 & 1 & 1 \\
 \end{longtable}
+}
 
 Multiline table without column headers:
 
+{\def\LTcaptype{} % do not increment counter
 \begin{longtable}[]{@{}
   >{\centering\arraybackslash}p{(\linewidth - 6\tabcolsep) * \real{0.1500}}
   >{\raggedright\arraybackslash}p{(\linewidth - 6\tabcolsep) * \real{0.1375}}
@@ -139,3 +146,4 @@ Multiline table without column headers:
 First & row & 12.0 & Example of a row that spans multiple lines. \\
 Second & row & 5.0 & Here's another one. Note the blank line between rows. \\
 \end{longtable}
+}