SPECS: Add po4a.

Signed-off-by: misaka00251 <liuxin@iscas.ac.cn>

SPECS/po4a/0001-Fix-msginit-compatibility-with-gettext-1.0.patch

@@ -0,0 +1,39 @@
+From 4cf9c5b90fe8bba7fca48d51ef3885bd411b08ef Mon Sep 17 00:00:00 2001
+From: Philip Taron <philip.taron@gmail.com>
+Date: Sat, 21 Mar 2026 10:14:26 -0700
+Subject: [PATCH] Fix msginit compatibility with gettext >= 1.0.
+
+gettext 1.0 changed msginit behavior: when the output PO file already
+exists, msginit now merges into it like msgmerge instead of failing
+with an error.  This breaks po4a because it passes an empty PO file as
+the output target; msginit merges into the empty file and produces a PO
+with stripped headers and corrupted content.
+
+Remove the output file before calling msginit when it exists and is
+empty, so that msginit always creates a fresh PO file with proper
+headers.
+
+* po4a: Before calling msginit, unlink the output file if it exists
+and is empty.
+
+See: https://github.com/mquinson/po4a/issues/636
+See: https://savannah.gnu.org/news/?id=10853
+---
+ po4a | 4 ++++
+ 1 file changed, 4 insertions(+)
+
+diff --git a/po4a b/po4a
+index 09edb9a13..c55b74b70 100755
+--- a/po4a
++++ b/po4a
+@@ -1875,6 +1875,10 @@ if ( not $po4a_opts{"no-update"} ) {
+                 }
+ 
+                 my $read_pot_filename = find_input_file($pot_filename);
++                # Remove the output file if it exists (e.g. as an empty file),
++                # because gettext >= 1.0's msginit merges into existing files
++                # instead of overwriting, producing broken PO headers.
++                unlink $outfile if ( -e $outfile && -z $outfile );
+                 my $cmd =
+                   "msginit$Config{_exe} -i \"$read_pot_filename\" --locale $lang -o \"$outfile\" --no-translator >$devnull";
+                 run_cmd($cmd);

SPECS/po4a/po4a.spec

@@ -0,0 +1,67 @@
+# SPDX-FileCopyrightText: (C) 2026 Institute of Software, Chinese Academy of Sciences (ISCAS)
+# SPDX-FileCopyrightText: (C) 2026 openRuyi Project Contributors
+# SPDX-FileContributor: Suyun <ziyu.oerv@isrc.iscas.ac.cn>
+# SPDX-FileContributor: misaka00251 <liuxin@iscas.ac.cn>
+#
+# SPDX-License-Identifier: MulanPSL-2.0
+
+Name:           po4a
+Version:        0.74
+Release:        %autorelease
+Summary:        Tools for helping translation of documentation
+License:        GPL-2.0-or-later
+URL:            https://po4a.org/
+VCS:            git:https://github.com/mquinson/po4a.git
+#!RemoteAsset:  sha256:25fc323f2ba37bbd48c3af0ebf49952644b0e468261f98633e91219a838fe7c2
+Source0:        https://github.com/mquinson/po4a/releases/download/v%{version}/po4a-%{version}.tar.gz
+BuildArch:      noarch
+BuildSystem:    perlbuild
+
+# https://github.com/mquinson/po4a/issues/636
+Patch0:         0001-Fix-msginit-compatibility-with-gettext-1.0.patch
+
+BuildOption(build):  --installdirs=vendor
+BuildOption(install):  --destdir=%{buildroot} --create_packlist=0
+
+BuildRequires:  make
+BuildRequires:  perl-macros
+BuildRequires:  perl-rpm-macros
+BuildRequires:  perl-rpm-packaging
+BuildRequires:  perl >= 5.8.1
+BuildRequires:  perl(Locale::gettext) >= 1.01
+BuildRequires:  perl(Module::Build) >= 0.42
+BuildRequires:  perl(Pod::Parser)
+BuildRequires:  perl(SGMLS)
+BuildRequires:  perl(Term::ReadKey)
+BuildRequires:  perl(Text::WrapI18N)
+BuildRequires:  perl(Unicode::GCString)
+BuildRequires:  perl(Unicode::LineBreak)
+BuildRequires:  perl(YAML::Tiny)
+BuildRequires:  docbook-xsl
+BuildRequires:  libxslt
+# For tests
+BuildRequires:  perl(Syntax::Keyword::Try)
+BuildRequires:  opensp
+BuildRequires:  docbook-dtds
+# We need kpsewhich
+BuildRequires:  texlive-latex
+
+%description
+po4a (PO for anything) eases the translation of documentation and other
+textual content. It converts documentation to PO files for translation,
+and then back to the original format from translated PO files.
+
+%build -p
+# Replace online docbook.xsl URL with local path for offline build
+sed -i 's|http://docbook.sourceforge.net/release/xsl/current/manpages/docbook.xsl|file://%{_datadir}/sgml/docbook/xsl-stylesheets-1.79.2/manpages/docbook.xsl|' Po4aBuilder.pm
+
+%files -f %{name}.files
+%doc README* TODO changelog
+%{_mandir}/*/man1/po4a*.1*
+%{_mandir}/*/man1/msguntypot.1*
+%{_mandir}/*/man3/Locale::Po4a::*.3*
+%{_mandir}/*/man7/po4a.7*
+%{_datadir}/locale/
+
+%changelog
+%autochangelog