https://src.fedoraproject.org/rpms/groff/raw/rawhide/f/0006-Revert-upstream-change-of-mapping-special-characters.patch

From f4f76740ad4693cb967801e366f1d6410381dd71 Mon Sep 17 00:00:00 2001
From: groff owner <groff-owner@fedoraproject.org>
Date: Thu, 2 Nov 2023 13:09:37 +0000
Subject: [PATCH] Revert upstream change of mapping special characters for
 UTF-8

Adopt Debian decision: https://salsa.debian.org/debian/groff/-/commit/d5394c68d70e6c5199b01d2522e094c8fd52e64e
---
 tmac/man.local  | 16 ++++++++++++++++
 tmac/mdoc.local | 17 ++++++++++++++++-
 2 files changed, 32 insertions(+), 1 deletion(-)

diff --git a/tmac/man.local b/tmac/man.local
index 5daa507..4bed937 100644
--- a/tmac/man.local
+++ b/tmac/man.local
@@ -2,6 +2,22 @@
 .\"
 .\" Put local modifications to groff_man(7)'s behavior here.
 .\"
+.\" Adopting Debian's decision to preserve old mapping for UTF-8
+.\" Debian: As of groff 1.23.0, the "-", "'", "`", "^", and "~" input
+.\" characters are mapped to non-Basic Latin code points in output from
+.\" the "utf8" device, for consistency with other output devices such as
+.\" PDF.  Unfortunately in practice this still causes far too much
+.\" disruption for innocent users of manual pages who just want to be able
+.\" to search for characters normally, so preserve the old behaviour.
+.\" Comment this out if you want to make sure that manual pages you're
+.\" writing are clear of these problems.
+.if '\*[.T]'utf8' \{\
+.  char - \-
+.  char ' \[aq]
+.  char ` \[ga]
+.  char ^ \[ha]
+.  char ~ \[ti]
+.\}
 .\" Change "0" to "1" to enable OSC 8 links on SGR-capable grotty(1)
 .\" output devices.
 .if !'\*[.T]'html' \
diff --git a/tmac/mdoc.local b/tmac/mdoc.local
index 94688ab..1bb47d6 100644
--- a/tmac/mdoc.local
+++ b/tmac/mdoc.local
@@ -2,6 +2,22 @@
 .\"
 .\" Put local modifications to groff_mdoc(7)'s behavior here.
 .\"
+.\" Adopting Debian's decision to preserve old mapping for UTF-8
+.\" Debian: As of groff 1.23.0, the "-", "'", "`", "^", and "~" input
+.\" characters are mapped to non-Basic Latin code points in output from
+.\" the "utf8" device, for consistency with other output devices such as
+.\" PDF.  Unfortunately in practice this still causes far too much
+.\" disruption for innocent users of manual pages who just want to be able
+.\" to search for characters normally, so preserve the old behaviour.
+.\" Comment this out if you want to make sure that manual pages you're
+.\" writing are clear of these problems.
+.if '\*[.T]'utf8' \{\
+.  char - \-
+.  char ' \[aq]
+.  char ` \[ga]
+.  char ^ \[ha]
+.  char ~ \[ti]
+.\}
 .\" "CW" is not a portable font name, but some man pages use it anyway.
 .\" Uncomment this to suppress warnings produced by such pages.  This
 .\" test remaps the font to roman ("R") on nroff (terminal) devices. You
@@ -12,4 +28,3 @@
 .\" mode: nroff
 .\" fill-column: 72
 .\" End:
-.\" vim: set filetype=groff textwidth=72:
-- 
2.41.0