From d53262abe0e4c60f512696a0cb1619e90c16a0d4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jean-Fran=C3=A7ois=20B?=
 <2589111+jfbu@users.noreply.github.com>
Date: Mon, 5 Aug 2024 10:36:58 +0200
Subject: [PATCH] LaTeX: avoid "Overfull \hbox" reports when solved by
 verbatimforcewraps

Fix #12722
---
 CHANGES.rst                              | 4 ++++
 sphinx/texinputs/sphinxlatexliterals.sty | 3 +++
 2 files changed, 7 insertions(+)

diff --git a/CHANGES.rst b/CHANGES.rst
index 1d04bc27010..ade5ca74599 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -19,6 +19,10 @@ Bugs fixed
 * #12514: intersphinx: fix the meaning of a negative value for
   :confval:`intersphinx_cache_limit`.
   Patch by Shengyu Zhang.
+* #12722: LaTeX: avoid TeX reporting ``Overfull \hbox`` from too long
+  strings in a codeline when the problem has actually been solved thanks
+  to :ref:`latexsphinxsetupforcewraps`.
+  Patch by Jean-François B.
 
 Testing
 -------
diff --git a/sphinx/texinputs/sphinxlatexliterals.sty b/sphinx/texinputs/sphinxlatexliterals.sty
index c2c0806455d..11991d9c3e8 100644
--- a/sphinx/texinputs/sphinxlatexliterals.sty
+++ b/sphinx/texinputs/sphinxlatexliterals.sty
@@ -512,6 +512,9 @@
     \setbox\spx@tempboxa
     \vtop{\raggedright\hyphenpenalty\z@\exhyphenpenalty\z@
           \doublehyphendemerits\z@\finalhyphendemerits\z@
+% Avoid TeX reporting Overfull \hbox'es during this measuring phase. Setting
+% \hbadness to \@M to avoid Underfull reports is unneeded due to \raggedright.
+          \hfuzz\maxdimen
           \spx@everypar{}\noindent\strut\FV@Line\strut\spx@par
           \spx@verb@getwidths}%
     \ifdim\spx@verb@maxwidth>