diff --git a/.github/workflows/autotools-cmake.yml b/.github/workflows/autotools-cmake.yml
deleted file mode 100644
index 00317a01..00000000
--- a/.github/workflows/autotools-cmake.yml
+++ /dev/null
@@ -1,178 +0,0 @@
-#                          __  __            _
-#                       ___\ \/ /_ __   __ _| |_
-#                      / _ \\  /| '_ \ / _` | __|
-#                     |  __//  \| |_) | (_| | |_
-#                      \___/_/\_\ .__/ \__,_|\__|
-#                               |_| XML parser
-#
-# Copyright (c) 2021-2025 Sebastian Pipping <sebastian@pipping.org>
-# Copyright (c) 2023      Joyce Brum <joycebrum@google.com>
-# Copyright (c) 2024      Dag-Erling Smørgrav <des@des.dev>
-# Licensed under the MIT license:
-#
-# Permission is  hereby granted,  free of charge,  to any  person obtaining
-# a  copy  of  this  software   and  associated  documentation  files  (the
-# "Software"),  to  deal in  the  Software  without restriction,  including
-# without  limitation the  rights  to use,  copy,  modify, merge,  publish,
-# distribute, sublicense, and/or sell copies of the Software, and to permit
-# persons  to whom  the Software  is  furnished to  do so,  subject to  the
-# following conditions:
-#
-# The above copyright  notice and this permission notice  shall be included
-# in all copies or substantial portions of the Software.
-#
-# THE  SOFTWARE  IS  PROVIDED  "AS  IS",  WITHOUT  WARRANTY  OF  ANY  KIND,
-# EXPRESS  OR IMPLIED,  INCLUDING  BUT  NOT LIMITED  TO  THE WARRANTIES  OF
-# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
-# NO EVENT SHALL THE AUTHORS OR  COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
-# DAMAGES OR  OTHER LIABILITY, WHETHER  IN AN  ACTION OF CONTRACT,  TORT OR
-# OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
-# USE OR OTHER DEALINGS IN THE SOFTWARE.
-
-name: Ensure that GNU Autotools and CMake build systems agree
-
-on:
-  pull_request:
-  push:
-  schedule:
-    - cron: '0 2 * * 5'  # Every Friday at 2am
-  workflow_dispatch:
-
-permissions:
-  contents: read
-
-jobs:
-  checks:
-    name: Ensure that GNU Autotools and CMake build systems agree
-    strategy:
-      matrix:
-        include:
-          - os: macos-14
-            configure_args:
-            cmake_args:
-          - os: ubuntu-22.04
-            configure_args:
-            cmake_args:
-          - os: ubuntu-22.04
-            configure_args: --host=i686-w64-mingw32
-            cmake_args: -DCMAKE_TOOLCHAIN_FILE=cmake/mingw-toolchain.cmake
-    defaults:
-      run:
-        shell: bash
-    runs-on: "${{ matrix.os }}"
-    steps:
-    - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683  # v4.2.2
-
-    - name: (Linux) Install build dependencies
-      if: "${{ runner.os == 'Linux' }}"
-      run: |-
-        set -x
-        sudo apt-get update
-        sudo apt-get install --yes --no-install-recommends -V \
-            cmake \
-            docbook2x \
-            lzip \
-            mingw-w64
-
-    - name: (macOS) Install build dependencies
-      if: "${{ runner.os == 'macOS' }}"
-      run: |
-        brew install \
-            autoconf \
-            automake \
-            cmake \
-            docbook2x \
-            libtool \
-            lzip
-
-    - name: Produce and extract a release archive
-      run: |
-        set -x
-        cd expat
-        ./buildconf.sh
-        ./configure
-        make dist
-        tar xf expat-*.*.*.tar.gz
-
-    - name: Build and install using GNU Autotools
-      run: |
-        set -x
-        cd expat/expat-*.*.*/
-        mkdir build_autotools
-        cd build_autotools
-        ../configure \
-            --libdir='${exec_prefix}/lib123' \
-            ${{matrix.configure_args}}
-        make install DESTDIR="${PWD}"/ROOT
-        find ROOT | sort | xargs ls -ld
-
-    - name: Build and install using CMake
-      run: |
-        set -x
-        cd expat/expat-*.*.*/
-        mkdir build_cmake
-        cd build_cmake
-        cmake \
-            -DCMAKE_INSTALL_LIBDIR=lib123 \
-            ${{matrix.cmake_args}} \
-            ..
-        make install DESTDIR="${PWD}"/ROOT
-        find ROOT | sort | xargs ls -ld
-
-    - name: Check for identical CMake files from both build systems
-      run: |
-        set -x
-        cd expat/expat-*.*.*/
-
-        if [[ "${{ runner.os }}" == macOS ]]; then
-          # There is a known difference between Autotools and CMake for macOS:
-          #   Autotools:
-          #   - /usr/local/lib123/libexpat.<major>.dylib
-          #   - /usr/local/lib123/libexpat.dylib
-          #   CMake:
-          #   - /usr/local/lib123/libexpat.<major>.<minor>.<patch>.dylib
-          #   - /usr/local/lib123/libexpat.<major>.dylib
-          #   - /usr/local/lib123/libexpat.dylib
-          # We patch the CMake side in line here to get the differ below to empty.
-          ( cd build_cmake/ROOT/usr/local/lib*/cmake/expat-*/ \
-              && sed -E 's,(libexpat\.[0-9]+)\.[0-9]+\.[0-9]+(\.dylib),\1\2,' expat-noconfig.cmake > expat-noconfig-patched.cmake \
-              && ! diff -u0 expat-noconfig{,-patched}.cmake \
-              && mv expat-noconfig{-patched,}.cmake )
-
-          # Autotools' LT_LIB_M has a hardcoded exclude for "*-*-darwin*" hosts,
-          # while macOS does have libm and is successfully found by CMake.
-          # We patch the CMake side in line here to get the differ below to empty.
-          #
-          # Both GNU and BSD sed can edit in-place without creating a backup,
-          # but not with the same syntax.  The syntax for editing in-place
-          # _with_ a backup however is the same, so do that, then remove the
-          # backup so it doesn't show up in the diff later.
-          sed -e 's,-lm,,' -i.bak \
-              build_cmake/ROOT/usr/local/lib*/pkgconfig/expat.pc
-          rm -f build_cmake/ROOT/usr/local/lib*/pkgconfig/expat.pc.bak
-        fi
-
-        diff \
-            --recursive \
-            --unified \
-            --exclude=xmlwf \
-            --exclude=xmlwf.exe \
-            --exclude=libexpat.a \
-            --exclude=libexpat-*.dll \
-            --exclude=libexpat.dll.a \
-            --exclude=libexpat.la \
-            --exclude=libexpat.so\* \
-            --exclude=libexpat.\*dylib \
-            --exclude=expat_config.h \
-            build_{autotools,cmake}/ROOT
-
-    - name: (Linux except MinGW) Check for identical exported symbols from both build systems
-      if: "${{ runner.os == 'Linux' && ! contains(matrix.configure_args, 'mingw') }}"
-      run: |
-        list_shared_library_symbols_sh="${GITHUB_WORKSPACE}"/.github/workflows/scripts/list-shared-library-symbols.sh
-        exported_symbols_txt="${GITHUB_WORKSPACE}"/.github/workflows/data/exported-symbols.txt
-
-        set -x
-        cd expat/expat-*.*.*/
-        diff -u "${exported_symbols_txt}" <("${list_shared_library_symbols_sh}" build_autotools/ROOT/usr/local/lib*/libexpat.so)
-        diff -u "${exported_symbols_txt}" <("${list_shared_library_symbols_sh}" build_cmake/ROOT/usr/local/lib*/libexpat.so)
diff --git a/.github/workflows/clang-format.yml b/.github/workflows/clang-format.yml
deleted file mode 100644
index ebee2512..00000000
--- a/.github/workflows/clang-format.yml
+++ /dev/null
@@ -1,68 +0,0 @@
-#                          __  __            _
-#                       ___\ \/ /_ __   __ _| |_
-#                      / _ \\  /| '_ \ / _` | __|
-#                     |  __//  \| |_) | (_| | |_
-#                      \___/_/\_\ .__/ \__,_|\__|
-#                               |_| XML parser
-#
-# Copyright (c) 2021-2024 Sebastian Pipping <sebastian@pipping.org>
-# Copyright (c) 2023      Joyce Brum <joycebrum@google.com>
-# Licensed under the MIT license:
-#
-# Permission is  hereby granted,  free of charge,  to any  person obtaining
-# a  copy  of  this  software   and  associated  documentation  files  (the
-# "Software"),  to  deal in  the  Software  without restriction,  including
-# without  limitation the  rights  to use,  copy,  modify, merge,  publish,
-# distribute, sublicense, and/or sell copies of the Software, and to permit
-# persons  to whom  the Software  is  furnished to  do so,  subject to  the
-# following conditions:
-#
-# The above copyright  notice and this permission notice  shall be included
-# in all copies or substantial portions of the Software.
-#
-# THE  SOFTWARE  IS  PROVIDED  "AS  IS",  WITHOUT  WARRANTY  OF  ANY  KIND,
-# EXPRESS  OR IMPLIED,  INCLUDING  BUT  NOT LIMITED  TO  THE WARRANTIES  OF
-# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
-# NO EVENT SHALL THE AUTHORS OR  COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
-# DAMAGES OR  OTHER LIABILITY, WHETHER  IN AN  ACTION OF CONTRACT,  TORT OR
-# OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
-# USE OR OTHER DEALINGS IN THE SOFTWARE.
-
-name: Enforce clang-format clean code
-
-on:
-  pull_request:
-  push:
-  schedule:
-    - cron: '0 2 * * 5'  # Every Friday at 2am
-  workflow_dispatch:
-
-permissions:
-  contents: read
-
-jobs:
-  clang_format:
-    name: Enforce clang-format clean code
-    runs-on: ubuntu-22.04
-    steps:
-    - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683  # v4.2.2
-
-    - name: Install clang-format 19
-      run: |-
-        set -x
-        source /etc/os-release
-        wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key | sudo apt-key add -
-        sudo add-apt-repository "deb https://apt.llvm.org/${UBUNTU_CODENAME}/ llvm-toolchain-${UBUNTU_CODENAME}-19 main"
-        sudo apt-get update  # due to new repository
-        sudo apt-get install --yes --no-install-recommends -V \
-            clang-format-19 \
-            moreutils
-        echo /usr/lib/llvm-19/bin >>"${GITHUB_PATH}"
-
-    - name: Run clang-format
-      run: |
-        set -x
-        cd expat/
-        ./apply-clang-format.sh
-        git config color.diff always
-        git diff --exit-code  # i.e. fail CI when there is a diff (and present it)
diff --git a/.github/workflows/clang-static-analyzer.yml b/.github/workflows/clang-static-analyzer.yml
deleted file mode 100644
index f0d6acd3..00000000
--- a/.github/workflows/clang-static-analyzer.yml
+++ /dev/null
@@ -1,90 +0,0 @@
-#                          __  __            _
-#                       ___\ \/ /_ __   __ _| |_
-#                      / _ \\  /| '_ \ / _` | __|
-#                     |  __//  \| |_) | (_| | |_
-#                      \___/_/\_\ .__/ \__,_|\__|
-#                               |_| XML parser
-#
-# Copyright (c) 2025 Sebastian Pipping <sebastian@pipping.org>
-# Licensed under the MIT license:
-#
-# Permission is  hereby granted,  free of charge,  to any  person obtaining
-# a  copy  of  this  software   and  associated  documentation  files  (the
-# "Software"),  to  deal in  the  Software  without restriction,  including
-# without  limitation the  rights  to use,  copy,  modify, merge,  publish,
-# distribute, sublicense, and/or sell copies of the Software, and to permit
-# persons  to whom  the Software  is  furnished to  do so,  subject to  the
-# following conditions:
-#
-# The above copyright  notice and this permission notice  shall be included
-# in all copies or substantial portions of the Software.
-#
-# THE  SOFTWARE  IS  PROVIDED  "AS  IS",  WITHOUT  WARRANTY  OF  ANY  KIND,
-# EXPRESS  OR IMPLIED,  INCLUDING  BUT  NOT LIMITED  TO  THE WARRANTIES  OF
-# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
-# NO EVENT SHALL THE AUTHORS OR  COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
-# DAMAGES OR  OTHER LIABILITY, WHETHER  IN AN  ACTION OF CONTRACT,  TORT OR
-# OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
-# USE OR OTHER DEALINGS IN THE SOFTWARE.
-
-name: Enforce Clang Static Analyzer (scan-build) clean code
-
-on:
-  pull_request:
-  push:
-  schedule:
-    - cron: '0 2 * * 5'  # Every Friday at 2am
-  workflow_dispatch:
-
-permissions:
-  contents: read
-
-jobs:
-  clang_static_analyzer:
-    name: Enforce Clang Static Analyzer (scan-build) clean code
-    runs-on: ubuntu-22.04
-    steps:
-    - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683  # v4.2.2
-
-    - name: Install Clang 19 (including scan-build)
-      run: |-
-        set -x
-        source /etc/os-release
-        wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key | sudo apt-key add -
-        sudo add-apt-repository "deb https://apt.llvm.org/${UBUNTU_CODENAME}/ llvm-toolchain-${UBUNTU_CODENAME}-19 main"
-        sudo apt-get update  # due to new repository
-        sudo apt-get install --yes --no-install-recommends -V \
-            clang-19 \
-            clang-tools-19
-        echo /usr/lib/llvm-19/bin >>"${GITHUB_PATH}"
-
-    - name: Build using scan-build
-      run: |
-        set -x
-
-        clang --version | head -n1
-        clang++ --version | head -n1
-
-        available_checkers="$(scan-build --help | grep -o '^ [+ ] [^. ]\+\.[^ ]\+' | sed 's,^.\{3\},,' | sort)"
-        [[ "$(wc -l <<<"${available_checkers}")" -ge 103 ]]  # self-test
-
-        enabled_checkers="$(grep -v \
-            -e '^optin\.performance\.Padding$' \
-            -e '^security\.insecureAPI\.strcpy$' \
-            <<<"${available_checkers}")"
-        [[ "$(wc -l <<<"${enabled_checkers}")" -ge 101 ]]  # self-test
-
-        scan-build \
-            -o html/ \
-            $(sed 's,^,-enable-checker ,' <<<"${enabled_checkers}") \
-            sh -c 'cmake -S expat/ -B build/ && make -C build -j$(nproc) VERBOSE=1'
-
-        rmdir html || false 'The report directory is non-empty, i.e. Clang Static Analyzer found an issue! Please download and inspect the zip file artifact attached to this CI run. Thanks!'
-
-    - name: Store scan-build report
-      if: always()
-      uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02  # v4.6.2
-      with:
-        name: expat_scan_build_report_${{ github.sha }}
-        path: html/
-        if-no-files-found: ignore
diff --git a/.github/workflows/clang-tidy.yml b/.github/workflows/clang-tidy.yml
deleted file mode 100644
index 2db4dac0..00000000
--- a/.github/workflows/clang-tidy.yml
+++ /dev/null
@@ -1,65 +0,0 @@
-#                          __  __            _
-#                       ___\ \/ /_ __   __ _| |_
-#                      / _ \\  /| '_ \ / _` | __|
-#                     |  __//  \| |_) | (_| | |_
-#                      \___/_/\_\ .__/ \__,_|\__|
-#                               |_| XML parser
-#
-# Copyright (c) 2021-2024 Sebastian Pipping <sebastian@pipping.org>
-# Copyright (c) 2023      Joyce Brum <joycebrum@google.com>
-# Licensed under the MIT license:
-#
-# Permission is  hereby granted,  free of charge,  to any  person obtaining
-# a  copy  of  this  software   and  associated  documentation  files  (the
-# "Software"),  to  deal in  the  Software  without restriction,  including
-# without  limitation the  rights  to use,  copy,  modify, merge,  publish,
-# distribute, sublicense, and/or sell copies of the Software, and to permit
-# persons  to whom  the Software  is  furnished to  do so,  subject to  the
-# following conditions:
-#
-# The above copyright  notice and this permission notice  shall be included
-# in all copies or substantial portions of the Software.
-#
-# THE  SOFTWARE  IS  PROVIDED  "AS  IS",  WITHOUT  WARRANTY  OF  ANY  KIND,
-# EXPRESS  OR IMPLIED,  INCLUDING  BUT  NOT LIMITED  TO  THE WARRANTIES  OF
-# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
-# NO EVENT SHALL THE AUTHORS OR  COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
-# DAMAGES OR  OTHER LIABILITY, WHETHER  IN AN  ACTION OF CONTRACT,  TORT OR
-# OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
-# USE OR OTHER DEALINGS IN THE SOFTWARE.
-
-name: Enforce clang-tidy clean code
-
-on:
-  pull_request:
-  push:
-  schedule:
-    - cron: '0 2 * * 5'  # Every Friday at 2am
-  workflow_dispatch:
-
-permissions:
-  contents: read
-
-jobs:
-  clang_tidy:
-    name: Enforce clang-tidy clean code
-    runs-on: ubuntu-22.04
-    steps:
-    - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683  # v4.2.2
-
-    - name: Install clang-tidy 19
-      run: |-
-        set -x
-        source /etc/os-release
-        wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key | sudo apt-key add -
-        sudo add-apt-repository "deb https://apt.llvm.org/${UBUNTU_CODENAME}/ llvm-toolchain-${UBUNTU_CODENAME}-19 main"
-        sudo apt-get update  # due to new repository
-        sudo apt-get install --yes --no-install-recommends -V \
-            clang-tidy-19
-        echo /usr/lib/llvm-19/bin >>"${GITHUB_PATH}"
-
-    - name: Run clang-tidy
-      run: |
-        set -x
-        cd expat/
-        ./apply-clang-tidy.sh
diff --git a/.github/workflows/cmake-required-version.yml b/.github/workflows/cmake-required-version.yml
deleted file mode 100644
index 0f7d8dc5..00000000
--- a/.github/workflows/cmake-required-version.yml
+++ /dev/null
@@ -1,78 +0,0 @@
-#                          __  __            _
-#                       ___\ \/ /_ __   __ _| |_
-#                      / _ \\  /| '_ \ / _` | __|
-#                     |  __//  \| |_) | (_| | |_
-#                      \___/_/\_\ .__/ \__,_|\__|
-#                               |_| XML parser
-#
-# Copyright (c) 2021-2025 Sebastian Pipping <sebastian@pipping.org>
-# Copyright (c) 2023      Joyce Brum <joycebrum@google.com>
-# Copyright (c) 2024      Dag-Erling Smørgrav <des@des.dev>
-# Licensed under the MIT license:
-#
-# Permission is  hereby granted,  free of charge,  to any  person obtaining
-# a  copy  of  this  software   and  associated  documentation  files  (the
-# "Software"),  to  deal in  the  Software  without restriction,  including
-# without  limitation the  rights  to use,  copy,  modify, merge,  publish,
-# distribute, sublicense, and/or sell copies of the Software, and to permit
-# persons  to whom  the Software  is  furnished to  do so,  subject to  the
-# following conditions:
-#
-# The above copyright  notice and this permission notice  shall be included
-# in all copies or substantial portions of the Software.
-#
-# THE  SOFTWARE  IS  PROVIDED  "AS  IS",  WITHOUT  WARRANTY  OF  ANY  KIND,
-# EXPRESS  OR IMPLIED,  INCLUDING  BUT  NOT LIMITED  TO  THE WARRANTIES  OF
-# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
-# NO EVENT SHALL THE AUTHORS OR  COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
-# DAMAGES OR  OTHER LIABILITY, WHETHER  IN AN  ACTION OF CONTRACT,  TORT OR
-# OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
-# USE OR OTHER DEALINGS IN THE SOFTWARE.
-
-name: Ensure realistic minimum CMake version requirement
-
-on:
-  pull_request:
-  push:
-  schedule:
-    - cron: '0 2 * * 5'  # Every Friday at 2am
-  workflow_dispatch:
-
-permissions:
-  contents: read
-
-jobs:
-  checks:
-    name: Ensure realistic minimum CMake version requirement
-    runs-on: ubuntu-22.04
-    steps:
-    - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683  # v4.2.2
-
-    - name: Install ancient CMake
-      run: |
-        set -ux
-
-        needed_cmake_version="$(sed -n 's/cmake_minimum_required(VERSION \(.*\))/\1/p' expat/CMakeLists.txt)"
-
-        installer_filename="cmake-${needed_cmake_version}-linux-x86_64.sh"
-        download_url="https://github.com/Kitware/CMake/releases/download/v${needed_cmake_version}/${installer_filename}"
-        wget --no-verbose "${download_url}"
-
-        chmod +x "${installer_filename}"
-        mkdir -p ~/.local/
-
-        ./"${installer_filename}" --prefix="${HOME}"/.local/ --skip-license
-
-        hash cmake  # or the running shell will keep using the cached old location
-        present_cmake_version="$(cmake --version | sed -n 's/cmake version \(.*\)/\1/p')"
-        [[ ${present_cmake_version} = ${needed_cmake_version} ]]
-
-    - name: Build libexpat using ancient CMake
-      run: |
-        set -ux
-        mkdir expat/build
-        cd expat/build
-        cmake --version
-        cmake ..
-        make VERBOSE=1 all test install DESTDIR="${PWD}/ROOT/"
-        find ROOT/ -not -type d | sort
diff --git a/.github/workflows/codespell.yml b/.github/workflows/codespell.yml
deleted file mode 100644
index aed97590..00000000
--- a/.github/workflows/codespell.yml
+++ /dev/null
@@ -1,54 +0,0 @@
-#                          __  __            _
-#                       ___\ \/ /_ __   __ _| |_
-#                      / _ \\  /| '_ \ / _` | __|
-#                     |  __//  \| |_) | (_| | |_
-#                      \___/_/\_\ .__/ \__,_|\__|
-#                               |_| XML parser
-#
-# Copyright (c) 2021-2024 Sebastian Pipping <sebastian@pipping.org>
-# Copyright (c) 2023      Joyce Brum <joycebrum@google.com>
-# Licensed under the MIT license:
-#
-# Permission is  hereby granted,  free of charge,  to any  person obtaining
-# a  copy  of  this  software   and  associated  documentation  files  (the
-# "Software"),  to  deal in  the  Software  without restriction,  including
-# without  limitation the  rights  to use,  copy,  modify, merge,  publish,
-# distribute, sublicense, and/or sell copies of the Software, and to permit
-# persons  to whom  the Software  is  furnished to  do so,  subject to  the
-# following conditions:
-#
-# The above copyright  notice and this permission notice  shall be included
-# in all copies or substantial portions of the Software.
-#
-# THE  SOFTWARE  IS  PROVIDED  "AS  IS",  WITHOUT  WARRANTY  OF  ANY  KIND,
-# EXPRESS  OR IMPLIED,  INCLUDING  BUT  NOT LIMITED  TO  THE WARRANTIES  OF
-# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
-# NO EVENT SHALL THE AUTHORS OR  COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
-# DAMAGES OR  OTHER LIABILITY, WHETHER  IN AN  ACTION OF CONTRACT,  TORT OR
-# OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
-# USE OR OTHER DEALINGS IN THE SOFTWARE.
-
-name: Enforce codespell-clean spelling
-
-on:
-  pull_request:
-  push:
-  schedule:
-    - cron: '0 2 * * 5'  # Every Friday at 2am
-  workflow_dispatch:
-
-permissions:
-  contents: read
-
-jobs:
-  checks:
-    name: Enforce codespell-clean spelling
-    runs-on: ubuntu-22.04
-    steps:
-    - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683  # v4.2.2
-    - uses: codespell-project/actions-codespell@406322ec52dd7b488e48c1c4b82e2a8b3a1bf630  # v2.1
-      with:
-        path: expat/
-        # "arameter" is from "[p]arameter" in xmlwf help output
-        # "otation" is from "[n]otation" in xmlwf help output
-        ignore_words_list: arameter,otation
diff --git a/.github/workflows/coverage.yml b/.github/workflows/coverage.yml
deleted file mode 100644
index 01e94c9b..00000000
--- a/.github/workflows/coverage.yml
+++ /dev/null
@@ -1,91 +0,0 @@
-#                          __  __            _
-#                       ___\ \/ /_ __   __ _| |_
-#                      / _ \\  /| '_ \ / _` | __|
-#                     |  __//  \| |_) | (_| | |_
-#                      \___/_/\_\ .__/ \__,_|\__|
-#                               |_| XML parser
-#
-# Copyright (c) 2021-2024 Sebastian Pipping <sebastian@pipping.org>
-# Copyright (c) 2023      Joyce Brum <joycebrum@google.com>
-# Copyright (c) 2024      Dag-Erling Smørgrav <des@des.dev>
-# Licensed under the MIT license:
-#
-# Permission is  hereby granted,  free of charge,  to any  person obtaining
-# a  copy  of  this  software   and  associated  documentation  files  (the
-# "Software"),  to  deal in  the  Software  without restriction,  including
-# without  limitation the  rights  to use,  copy,  modify, merge,  publish,
-# distribute, sublicense, and/or sell copies of the Software, and to permit
-# persons  to whom  the Software  is  furnished to  do so,  subject to  the
-# following conditions:
-#
-# The above copyright  notice and this permission notice  shall be included
-# in all copies or substantial portions of the Software.
-#
-# THE  SOFTWARE  IS  PROVIDED  "AS  IS",  WITHOUT  WARRANTY  OF  ANY  KIND,
-# EXPRESS  OR IMPLIED,  INCLUDING  BUT  NOT LIMITED  TO  THE WARRANTIES  OF
-# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
-# NO EVENT SHALL THE AUTHORS OR  COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
-# DAMAGES OR  OTHER LIABILITY, WHETHER  IN AN  ACTION OF CONTRACT,  TORT OR
-# OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
-# USE OR OTHER DEALINGS IN THE SOFTWARE.
-
-name: Collect test coverage
-
-on:
-  pull_request:
-  push:
-  schedule:
-    - cron: '0 2 * * 5'  # Every Friday at 2am
-  workflow_dispatch:
-
-permissions:
-  contents: read
-
-jobs:
-  checks:
-    name: Collect test coverage
-    runs-on: ubuntu-22.04
-    env:
-      CFLAGS: -g3 -pipe
-    steps:
-    - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683  # v4.2.2
-    - name: Install build dependencies
-      run: |-
-        set -x -u
-        source /etc/os-release
-
-        # Unlock 32bit architecture (for Wine further down)
-        sudo dpkg --add-architecture i386  # for wine32
-        sudo apt-get update  # due to new architecture
-
-        sudo apt-get install --yes --no-install-recommends -V \
-            cmake \
-            docbook-xml \
-            docbook2x \
-            gcc-multilib \
-            g++-multilib \
-            lcov \
-            libbsd-dev \
-            lzip \
-            moreutils
-
-        # Install 32bit Wine
-        sudo apt-get install --yes --no-install-recommends -V \
-            mingw-w64 \
-            wine-stable \
-            wine32:i386
-    - name: Unshallow Git clone
-      run: |
-        git fetch --force --tags --unshallow origin  # for "git describe" in coverage.sh
-    - name: Collect test coverage
-      env:
-        MODE: coverage-sh
-      run: |
-        exec ./.ci.sh
-
-    - name: Store coverage .info and HTML report
-      uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02  # v4.6.2
-      with:
-        name: coverage
-        path: expat/coverage__*/
-        if-no-files-found: error
diff --git a/.github/workflows/coverity-scan.yml b/.github/workflows/coverity-scan.yml
deleted file mode 100644
index 14f39c66..00000000
--- a/.github/workflows/coverity-scan.yml
+++ /dev/null
@@ -1,125 +0,0 @@
-#                          __  __            _
-#                       ___\ \/ /_ __   __ _| |_
-#                      / _ \\  /| '_ \ / _` | __|
-#                     |  __//  \| |_) | (_| | |_
-#                      \___/_/\_\ .__/ \__,_|\__|
-#                               |_| XML parser
-#
-# Copyright (c) 2024-2025 Sebastian Pipping <sebastian@pipping.org>
-# Licensed under the MIT license:
-#
-# Permission is  hereby granted,  free of charge,  to any  person obtaining
-# a  copy  of  this  software   and  associated  documentation  files  (the
-# "Software"),  to  deal in  the  Software  without restriction,  including
-# without  limitation the  rights  to use,  copy,  modify, merge,  publish,
-# distribute, sublicense, and/or sell copies of the Software, and to permit
-# persons  to whom  the Software  is  furnished to  do so,  subject to  the
-# following conditions:
-#
-# The above copyright  notice and this permission notice  shall be included
-# in all copies or substantial portions of the Software.
-#
-# THE  SOFTWARE  IS  PROVIDED  "AS  IS",  WITHOUT  WARRANTY  OF  ANY  KIND,
-# EXPRESS  OR IMPLIED,  INCLUDING  BUT  NOT LIMITED  TO  THE WARRANTIES  OF
-# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
-# NO EVENT SHALL THE AUTHORS OR  COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
-# DAMAGES OR  OTHER LIABILITY, WHETHER  IN AN  ACTION OF CONTRACT,  TORT OR
-# OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
-# USE OR OTHER DEALINGS IN THE SOFTWARE.
-
-name: Upload build to Coverity Scan
-
-on:
-  push:
-    branches:
-      - master
-  schedule:
-    - cron: '0 2 * * 5'  # Every Friday at 2am
-  workflow_dispatch:
-
-permissions:
-  contents: read
-
-jobs:
-  coverity_scan_upload:
-    name: Upload build to Coverity Scan
-    # NOTE: The idea is not to bother fork repositories with a job
-    #       that is doomed to fail
-    if: ${{ github.repository == 'libexpat/libexpat' }}
-    runs-on: ubuntu-24.04
-    steps:
-    - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683  # v4.2.2
-      with:
-        # The next two lines ensure clean and public-only submissions
-        repository: libexpat/libexpat
-        ref: master
-        # This will allow to do "git describe --tags" further done
-        fetch-depth: 0
-
-    - name: Determine version string
-      id: determine_version
-      run: |-
-        set -x
-        tee    "${GITHUB_OUTPUT}" <<< "version=$(git describe --tags | sed -e 's,^R_,,' -e 's,_,.,g')"
-        tee -a "${GITHUB_OUTPUT}" <<< "git_commit=$(git rev-parse HEAD)"
-
-    - name: Install Clang 19
-      run: |-
-        set -x
-        source /etc/os-release
-        wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key | sudo apt-key add -
-        sudo add-apt-repository "deb https://apt.llvm.org/${UBUNTU_CODENAME}/ llvm-toolchain-${UBUNTU_CODENAME}-19 main"
-        sudo apt-get update  # due to new repository
-        sudo apt-get install --yes --no-install-recommends -V \
-            clang-19 \
-            libclang-rt-19-dev \
-            llvm-19
-        echo /usr/lib/llvm-19/bin >>"${GITHUB_PATH}"
-
-    - name: Install build dependencies
-      run: |-
-        set -x
-        sudo apt-get install --yes --no-install-recommends -V \
-            libprotobuf-dev \
-            protobuf-compiler
-
-    - name: Configure using CMake
-      run: |
-        set -x -o pipefail
-
-        type -P clang clang++
-        clang --version | head -n1
-        clang++ --version | head -n1
-
-        cd expat/
-        args=(
-            -DEXPAT_BUILD_DOCS=OFF
-            -DEXPAT_BUILD_FUZZERS=ON
-
-            # Tune compilation of fuzzers to (1) pass all sanity checks from
-            # CMakeLists.txt (that e.g. require use of fuzzers with sanitizers)
-            # and (2) ideally speed up compilation since no machine or human
-            # will be running the binaries we build for nothing but Coverity:
-            -DCMAKE_C_COMPILER=clang
-            -DCMAKE_CXX_COMPILER=clang++
-            -DCMAKE_{C,CXX}_FLAGS='-O1 -g -fsanitize=address'
-            -DCMAKE_{EXE,MODULE,SHARED}_LINKER_FLAGS='-g -fsanitize=address'
-        )
-        cmake "${args[@]}" -S . -B .
-
-    - uses: vapier/coverity-scan-action@2068473c7bdf8c2fb984a6a40ae76ee7facd7a85  # v1.8.0
-      with:
-        email: ${{ secrets.COVERITY_SCAN_EMAIL }}
-        token: ${{ secrets.COVERITY_SCAN_TOKEN }}
-        command: make VERBOSE=1
-        working-directory: "${{ github.workspace }}/expat"
-        version: "${{ steps.determine_version.outputs.version }}"
-        # NOTE: The commit here is not necessarily the same as ${{ github.sha }} that triggered the action.
-        description: "coverity-scan-action libexpat/libexpat / ${{ steps.determine_version.outputs.git_commit }}"
-
-    - name: Offer analysis tarball for inspection
-      uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02  # v4.6.2
-      with:
-        name: expat_coverity_scan_upload_${{ github.sha }}
-        path: expat/cov-int.tgz
-        if-no-files-found: error
diff --git a/.github/workflows/cppcheck.yml b/.github/workflows/cppcheck.yml
deleted file mode 100644
index a987b3a7..00000000
--- a/.github/workflows/cppcheck.yml
+++ /dev/null
@@ -1,57 +0,0 @@
-#                          __  __            _
-#                       ___\ \/ /_ __   __ _| |_
-#                      / _ \\  /| '_ \ / _` | __|
-#                     |  __//  \| |_) | (_| | |_
-#                      \___/_/\_\ .__/ \__,_|\__|
-#                               |_| XML parser
-#
-# Copyright (c) 2021-2025 Sebastian Pipping <sebastian@pipping.org>
-# Copyright (c) 2023      Joyce Brum <joycebrum@google.com>
-# Copyright (c) 2024      Dag-Erling Smørgrav <des@des.dev>
-# Licensed under the MIT license:
-#
-# Permission is  hereby granted,  free of charge,  to any  person obtaining
-# a  copy  of  this  software   and  associated  documentation  files  (the
-# "Software"),  to  deal in  the  Software  without restriction,  including
-# without  limitation the  rights  to use,  copy,  modify, merge,  publish,
-# distribute, sublicense, and/or sell copies of the Software, and to permit
-# persons  to whom  the Software  is  furnished to  do so,  subject to  the
-# following conditions:
-#
-# The above copyright  notice and this permission notice  shall be included
-# in all copies or substantial portions of the Software.
-#
-# THE  SOFTWARE  IS  PROVIDED  "AS  IS",  WITHOUT  WARRANTY  OF  ANY  KIND,
-# EXPRESS  OR IMPLIED,  INCLUDING  BUT  NOT LIMITED  TO  THE WARRANTIES  OF
-# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
-# NO EVENT SHALL THE AUTHORS OR  COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
-# DAMAGES OR  OTHER LIABILITY, WHETHER  IN AN  ACTION OF CONTRACT,  TORT OR
-# OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
-# USE OR OTHER DEALINGS IN THE SOFTWARE.
-
-name: Run Cppcheck (from macOS Homebrew)
-
-on:
-  pull_request:
-  push:
-  schedule:
-    - cron: '0 2 * * 5'  # Every Friday at 2am
-  workflow_dispatch:
-
-permissions:
-  contents: read
-
-jobs:
-  checks:
-    name: Run Cppcheck
-    runs-on: macos-14
-    steps:
-    - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683  # v4.2.2
-    - name: Install runtime dependencies
-      run: |
-        set -x
-        brew update
-        exec brew install cppcheck
-    - name: Run Cppcheck
-      run: |
-        exec .github/workflows/scripts/mass-cppcheck.sh
diff --git a/.github/workflows/emscripten.yml b/.github/workflows/emscripten.yml
deleted file mode 100644
index 5c9cc961..00000000
--- a/.github/workflows/emscripten.yml
+++ /dev/null
@@ -1,68 +0,0 @@
-#                          __  __            _
-#                       ___\ \/ /_ __   __ _| |_
-#                      / _ \\  /| '_ \ / _` | __|
-#                     |  __//  \| |_) | (_| | |_
-#                      \___/_/\_\ .__/ \__,_|\__|
-#                               |_| XML parser
-#
-# Copyright (c) 2025 Sebastian Pipping <sebastian@pipping.org>
-# Licensed under the MIT license:
-#
-# Permission is  hereby granted,  free of charge,  to any  person obtaining
-# a  copy  of  this  software   and  associated  documentation  files  (the
-# "Software"),  to  deal in  the  Software  without restriction,  including
-# without  limitation the  rights  to use,  copy,  modify, merge,  publish,
-# distribute, sublicense, and/or sell copies of the Software, and to permit
-# persons  to whom  the Software  is  furnished to  do so,  subject to  the
-# following conditions:
-#
-# The above copyright  notice and this permission notice  shall be included
-# in all copies or substantial portions of the Software.
-#
-# THE  SOFTWARE  IS  PROVIDED  "AS  IS",  WITHOUT  WARRANTY  OF  ANY  KIND,
-# EXPRESS  OR IMPLIED,  INCLUDING  BUT  NOT LIMITED  TO  THE WARRANTIES  OF
-# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
-# NO EVENT SHALL THE AUTHORS OR  COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
-# DAMAGES OR  OTHER LIABILITY, WHETHER  IN AN  ACTION OF CONTRACT,  TORT OR
-# OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
-# USE OR OTHER DEALINGS IN THE SOFTWARE.
-
-name: Build with Emscripten
-
-on:
-  pull_request:
-  push:
-  schedule:
-    - cron: '0 2 * * 5'  # Every Friday at 2am
-  workflow_dispatch:
-
-permissions:
-  contents: read
-
-jobs:
-  emscripten:
-    name: Build with Emscripten
-    runs-on: ubuntu-22.04
-    steps:
-    - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683  # v4.2.2
-
-    - name: Install build dependencies
-      run: |-
-        set -x
-        sudo apt-get update
-        sudo apt-get install --yes --no-install-recommends -V \
-            cmake \
-            emscripten \
-            make
-
-    - name: Build using musl-tools
-      run: |
-        cmake_args=(
-          -DCMAKE_C_FLAGS='-O1 -pipe -Wall -Wextra -pedantic -Wno-overlength-strings'
-          -DCMAKE_CXX_FLAGS='-O2 -pipe -Wall -Wextra -pedantic -Wno-overlength-strings'
-          -DEXPAT_BUILD_DOCS=OFF
-          -DEXPAT_WARNINGS_AS_ERRORS=ON
-        )
-        set -x
-        emcmake cmake "${cmake_args[@]}" -S expat/ -B build/
-        emmake make -C build -j$(nproc) VERBOSE=1 all
diff --git a/.github/workflows/expat_config_h.yml b/.github/workflows/expat_config_h.yml
deleted file mode 100644
index aca49c2c..00000000
--- a/.github/workflows/expat_config_h.yml
+++ /dev/null
@@ -1,63 +0,0 @@
-#                          __  __            _
-#                       ___\ \/ /_ __   __ _| |_
-#                      / _ \\  /| '_ \ / _` | __|
-#                     |  __//  \| |_) | (_| | |_
-#                      \___/_/\_\ .__/ \__,_|\__|
-#                               |_| XML parser
-#
-# Copyright (c) 2020-2025 Sebastian Pipping <sebastian@pipping.org>
-# Copyright (c) 2023      Joyce Brum <joycebrum@google.com>
-# Licensed under the MIT license:
-#
-# Permission is  hereby granted,  free of charge,  to any  person obtaining
-# a  copy  of  this  software   and  associated  documentation  files  (the
-# "Software"),  to  deal in  the  Software  without restriction,  including
-# without  limitation the  rights  to use,  copy,  modify, merge,  publish,
-# distribute, sublicense, and/or sell copies of the Software, and to permit
-# persons  to whom  the Software  is  furnished to  do so,  subject to  the
-# following conditions:
-#
-# The above copyright  notice and this permission notice  shall be included
-# in all copies or substantial portions of the Software.
-#
-# THE  SOFTWARE  IS  PROVIDED  "AS  IS",  WITHOUT  WARRANTY  OF  ANY  KIND,
-# EXPRESS  OR IMPLIED,  INCLUDING  BUT  NOT LIMITED  TO  THE WARRANTIES  OF
-# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
-# NO EVENT SHALL THE AUTHORS OR  COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
-# DAMAGES OR  OTHER LIABILITY, WHETHER  IN AN  ACTION OF CONTRACT,  TORT OR
-# OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
-# USE OR OTHER DEALINGS IN THE SOFTWARE.
-
-name: Check expat_config.h.{in,cmake} for regressions
-
-on:
-  pull_request:
-  push:
-  schedule:
-    - cron: '0 2 * * 5'  # Every Friday at 2am
-  workflow_dispatch:
-
-permissions:
-  contents: read
-
-jobs:
-  checks:
-    name: Check expat_config.h.{in,cmake} for regressions
-    runs-on: ubuntu-22.04
-    steps:
-    - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683  # v4.2.2
-    - name: Check expat_config.h.{in,cmake} for regressions
-      run: |
-        set -v
-        # A non-empty diff indicates a change in the list of macros exported:
-        # - Removals would be trouble (because expat_config.h is installed).
-        # - Additions could use an extra check by a human
-        ( cd expat && ./buildconf.sh )  # generate expat_config.h.in
-        diff -u <(sort < .github/workflows/data/expat_config_h_in__expected.txt) <(.github/workflows/scripts/list_exported_macros.sh expat/expat_config.h.in)
-        diff -u <(sort < .github/workflows/data/expat_config_h_cmake__expected.txt) <(.github/workflows/scripts/list_exported_macros.sh expat/expat_config.h.cmake)
-
-        # Informational (and not an ideal state)
-        diff -u \
-            <(sort < .github/workflows/data/expat_config_h_in__expected.txt) \
-            <(sort < .github/workflows/data/expat_config_h_cmake__expected.txt) \
-            || true
diff --git a/.github/workflows/fuzzing.yml b/.github/workflows/fuzzing.yml
deleted file mode 100644
index 6e14fffa..00000000
--- a/.github/workflows/fuzzing.yml
+++ /dev/null
@@ -1,173 +0,0 @@
-#                          __  __            _
-#                       ___\ \/ /_ __   __ _| |_
-#                      / _ \\  /| '_ \ / _` | __|
-#                     |  __//  \| |_) | (_| | |_
-#                      \___/_/\_\ .__/ \__,_|\__|
-#                               |_| XML parser
-#
-# Copyright (c) 2024-2025 Sebastian Pipping <sebastian@pipping.org>
-# Licensed under the MIT license:
-#
-# Permission is  hereby granted,  free of charge,  to any  person obtaining
-# a  copy  of  this  software   and  associated  documentation  files  (the
-# "Software"),  to  deal in  the  Software  without restriction,  including
-# without  limitation the  rights  to use,  copy,  modify, merge,  publish,
-# distribute, sublicense, and/or sell copies of the Software, and to permit
-# persons  to whom  the Software  is  furnished to  do so,  subject to  the
-# following conditions:
-#
-# The above copyright  notice and this permission notice  shall be included
-# in all copies or substantial portions of the Software.
-#
-# THE  SOFTWARE  IS  PROVIDED  "AS  IS",  WITHOUT  WARRANTY  OF  ANY  KIND,
-# EXPRESS  OR IMPLIED,  INCLUDING  BUT  NOT LIMITED  TO  THE WARRANTIES  OF
-# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
-# NO EVENT SHALL THE AUTHORS OR  COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
-# DAMAGES OR  OTHER LIABILITY, WHETHER  IN AN  ACTION OF CONTRACT,  TORT OR
-# OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
-# USE OR OTHER DEALINGS IN THE SOFTWARE.
-
-name: Run fuzzing regression tests
-
-on:
-  pull_request:
-  push:
-  schedule:
-    - cron: '0 2 * * 5'  # Every Friday at 2am
-  workflow_dispatch:
-
-permissions:
-  contents: read
-
-jobs:
-  run_fuzzers:
-    name: Run fuzzing regression tests
-    strategy:
-      fail-fast: false
-      matrix:
-        fuzzer:
-          - xml_parse_fuzzer_UTF-8
-          - xml_parsebuffer_fuzzer_UTF-16LE
-    runs-on: ubuntu-24.04
-    env:
-      fuzzer: ${{ matrix.fuzzer }}
-    steps:
-    - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683  # v4.2.2
-
-    - name: Install Clang 19
-      run: |-
-        set -x
-        source /etc/os-release
-        wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key | sudo apt-key add -
-        sudo add-apt-repository "deb https://apt.llvm.org/${UBUNTU_CODENAME}/ llvm-toolchain-${UBUNTU_CODENAME}-19 main"
-        sudo apt-get update  # due to new repository
-        sudo apt-get install --yes --no-install-recommends -V \
-            clang-19 \
-            libclang-rt-19-dev \
-            llvm-19
-        echo /usr/lib/llvm-19/bin >>"${GITHUB_PATH}"
-
-    - name: Install build dependencies
-      run: |-
-        set -x
-        sudo apt-get install --yes --no-install-recommends -V \
-            autoconf \
-            automake \
-            docbook2x \
-            libtool \
-            libprotobuf-dev \
-            lzip \
-            protobuf-compiler
-
-    - name: Turn Git clone into Autotools "make dist" release tarball
-      run: |-
-        set -x
-        pushd expat/
-          ./buildconf.sh
-          ./configure
-          make dist
-        popd
-        tar xf expat/expat-*.tar.xz
-        rm -R expat/
-        mv expat-* expat
-
-    - name: Build Expat fuzzers
-      run: |
-        set -x -o pipefail
-
-        type -P clang clang++
-        clang --version | head -n1
-        clang++ --version | head -n1
-
-        cd expat/
-        args=(
-            # Build nothing but fuzzers
-            -DEXPAT_BUILD_DOCS=OFF
-            -DEXPAT_BUILD_EXAMPLES=OFF
-            -DEXPAT_BUILD_FUZZERS=ON
-            -DEXPAT_BUILD_PKGCONFIG=OFF
-            -DEXPAT_BUILD_TESTS=OFF
-            -DEXPAT_BUILD_TOOLS=OFF
-
-            # Tune compilation of fuzzers to use Clang with ASan and UBSan
-            -DCMAKE_C_COMPILER=clang
-            -DCMAKE_CXX_COMPILER=clang++
-            -DCMAKE_{C,CXX}_FLAGS='-Wall -Wextra -pedantic -O1 -g -fsanitize=address,undefined -fno-sanitize-recover=all -fno-omit-frame-pointer -fno-common -fprofile-instr-generate -fcoverage-mapping'
-            -DCMAKE_{EXE,MODULE,SHARED}_LINKER_FLAGS='-g -fsanitize=address,undefined'
-            -DEXPAT_WARNINGS_AS_ERRORS=ON
-        )
-        cmake "${args[@]}" -S . -B build
-        make -C build VERBOSE=1 -j$(nproc)
-
-        ./build/fuzz/xml_lpm_fuzzer -help=1
-
-    - name: Download and extract Expat fuzzing corpora
-      run: |-
-        set -x
-        cd expat/build/
-        wget -q -O corpus.zip "https://storage.googleapis.com/expat-backup.clusterfuzz-external.appspot.com/corpus/libFuzzer/expat_${fuzzer}/public.zip"
-        unzip -q -d corpus/ corpus.zip
-
-    - name: Run fuzzing regression tests (1 to 5 minutes)
-      run: |
-        fuzz_args=(
-            -jobs=$(nproc)
-            -print_final_stats=1
-            -rss_limit_mb=2560  # from OSS-Fuzz
-            -timeout=25         # from OSS-Fuzz
-        )
-
-        set -x -o pipefail
-        cd expat/build/
-
-        mkdir coverage/
-        export LLVM_PROFILE_FILE=coverage/expat-%p.profraw
-
-        find corpus/ -type f | sort | xargs "fuzz/${fuzzer}" "${fuzz_args[@]}"
-
-    - name: Store fuzzing logs of last batch
-      uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02  # v4.6.2
-      with:
-        name: ${{ matrix.fuzzer }}_${{ github.sha }}_logs_last
-        path: expat/build/fuzz-*.log
-        if-no-files-found: error
-
-    - name: Render coverage report
-      run: |
-        set -x -o pipefail
-        cd expat/build/
-
-        # Merged and convert to a single indexed profile data file
-        llvm-profdata merge -sparse -o coverage/expat.profdata coverage/expat-*.profraw
-
-        # Render report
-        llvm-cov show fuzz/${fuzzer} -instr-profile=coverage/expat.profdata -show-branches=count -format=html -output-dir=coverage/html/
-        llvm-cov report fuzz/${fuzzer} -instr-profile=coverage/expat.profdata -show-functions -sources ../lib/ | tee coverage/report_functions.txt
-        llvm-cov report fuzz/${fuzzer} -instr-profile=coverage/expat.profdata                 -sources ../lib/ | tee coverage/report_files.txt
-
-    - name: Store coverage report
-      uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02  # v4.6.2
-      with:
-        name: ${{ matrix.fuzzer }}_${{ github.sha }}_coverage
-        path: expat/build/coverage/
-        if-no-files-found: error
diff --git a/.github/workflows/linux.yml b/.github/workflows/linux.yml
deleted file mode 100644
index 1ea03b7b..00000000
--- a/.github/workflows/linux.yml
+++ /dev/null
@@ -1,129 +0,0 @@
-#                          __  __            _
-#                       ___\ \/ /_ __   __ _| |_
-#                      / _ \\  /| '_ \ / _` | __|
-#                     |  __//  \| |_) | (_| | |_
-#                      \___/_/\_\ .__/ \__,_|\__|
-#                               |_| XML parser
-#
-# Copyright (c) 2021-2025 Sebastian Pipping <sebastian@pipping.org>
-# Copyright (c) 2023      Joyce Brum <joycebrum@google.com>
-# Copyright (c) 2023      Hanno Böck <hanno@gentoo.org>
-# Copyright (c) 2024      Dag-Erling Smørgrav <des@des.dev>
-# Licensed under the MIT license:
-#
-# Permission is  hereby granted,  free of charge,  to any  person obtaining
-# a  copy  of  this  software   and  associated  documentation  files  (the
-# "Software"),  to  deal in  the  Software  without restriction,  including
-# without  limitation the  rights  to use,  copy,  modify, merge,  publish,
-# distribute, sublicense, and/or sell copies of the Software, and to permit
-# persons  to whom  the Software  is  furnished to  do so,  subject to  the
-# following conditions:
-#
-# The above copyright  notice and this permission notice  shall be included
-# in all copies or substantial portions of the Software.
-#
-# THE  SOFTWARE  IS  PROVIDED  "AS  IS",  WITHOUT  WARRANTY  OF  ANY  KIND,
-# EXPRESS  OR IMPLIED,  INCLUDING  BUT  NOT LIMITED  TO  THE WARRANTIES  OF
-# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
-# NO EVENT SHALL THE AUTHORS OR  COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
-# DAMAGES OR  OTHER LIABILITY, WHETHER  IN AN  ACTION OF CONTRACT,  TORT OR
-# OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
-# USE OR OTHER DEALINGS IN THE SOFTWARE.
-
-name: Run Linux CI tasks
-
-on:
-  pull_request:
-  push:
-  schedule:
-    - cron: '0 2 * * 5'  # Every Friday at 2am
-  workflow_dispatch:
-
-permissions:
-  contents: read
-
-jobs:
-  checks:
-    name: Perform checks
-    strategy:
-      matrix:
-        include:
-          - MODE: cmake-oos
-          - MODE: distcheck
-          - MODE: qa-sh
-            FLAT_ENV: CC=clang CXX=clang++ LD=clang++ QA_SANITIZER=address
-          - MODE: qa-sh
-            FLAT_ENV: CC=clang CXX=clang++ LD=clang++ QA_SANITIZER=address CMAKE_ARGS=-DEXPAT_ATTR_INFO=ON
-          - MODE: qa-sh
-            FLAT_ENV: CC=clang CXX=clang++ LD=clang++ QA_SANITIZER=address CMAKE_ARGS=-DEXPAT_CONTEXT_BYTES=0
-          - MODE: qa-sh
-            FLAT_ENV: CC=clang CXX=clang++ LD=clang++ QA_SANITIZER=address CMAKE_ARGS="-DEXPAT_DTD=OFF -DEXPAT_GE=ON"
-          - MODE: qa-sh
-            FLAT_ENV: CC=clang CXX=clang++ LD=clang++ QA_SANITIZER=address CMAKE_ARGS="-DEXPAT_DTD=OFF -DEXPAT_GE=OFF"
-          - MODE: qa-sh
-            FLAT_ENV: CC=clang CXX=clang++ LD=clang++ QA_SANITIZER=address CMAKE_ARGS=-DEXPAT_LARGE_SIZE=ON
-          - MODE: qa-sh
-            FLAT_ENV: CC=clang CXX=clang++ LD=clang++ QA_SANITIZER=address CMAKE_ARGS=-DEXPAT_MIN_SIZE=ON
-          - MODE: qa-sh
-            FLAT_ENV: CC=clang CXX=clang++ LD=clang++ QA_SANITIZER=address CMAKE_ARGS=-DEXPAT_NS=OFF
-          - MODE: qa-sh
-            FLAT_ENV: CC=clang CXX=clang++ LD=clang++ QA_SANITIZER=cfi
-          - MODE: qa-sh
-            FLAT_ENV: CC=clang CXX=clang++ LD=clang++ QA_SANITIZER=memory
-          - MODE: qa-sh
-            FLAT_ENV: CC=clang CXX=clang++ LD=clang++ QA_SANITIZER=undefined
-          - MODE: qa-sh
-            FLAT_ENV: CC=gcc CXX=g++ LD=ld QA_PROCESSOR=gcov
-          - MODE: qa-sh
-            FLAT_ENV: CC=gcc CXX=g++ LD=ld QA_PROCESSOR=gcov CMAKE_ARGS=-D_EXPAT_M32=ON
-          - MODE: qa-sh
-            FLAT_ENV: CC=gcc CXX=g++ LD=ld QA_PROCESSOR=gcov CMAKE_ARGS="-D_EXPAT_M32=ON -DEXPAT_ATTR_INFO=ON"
-          - MODE: qa-sh
-            FLAT_ENV: CC=i686-w64-mingw32-gcc CXX=i686-w64-mingw32-g++ LD=i686-w64-mingw32-ld QA_PROCESSOR=gcov CMAKE_ARGS="-DCMAKE_SYSTEM_NAME=Windows -DWIN32=ON -DMINGW=ON -DEXPAT_ATTR_INFO=ON"
-          - MODE: qa-sh
-            FLAT_ENV: CC=i686-w64-mingw32-gcc CXX=i686-w64-mingw32-g++ LD=i686-w64-mingw32-ld QA_PROCESSOR=gcov CMAKE_ARGS="-DCMAKE_SYSTEM_NAME=Windows -DWIN32=ON -DMINGW=ON -DEXPAT_ATTR_INFO=ON -DEXPAT_CHAR_TYPE=wchar_t"
-    runs-on: ubuntu-22.04
-    env:
-      CFLAGS: -g3 -pipe
-    steps:
-    - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683  # v4.2.2
-    - name: Install build dependencies (MinGW)
-      if: "${{ contains(matrix.FLAT_ENV, 'mingw') }}"
-      run: |-
-        set -x
-
-        # Install 32bit Wine
-        sudo dpkg --add-architecture i386  # for wine32
-        sudo apt-get update  # due to new architecture
-        sudo apt-get install --yes --no-install-recommends -V \
-            mingw-w64 \
-            wine-stable \
-            wine32:i386
-    - name: Install build dependencies (Non-MinGW)
-      if: "${{ ! contains(matrix.FLAT_ENV, 'mingw') }}"
-      run: |-
-        set -x
-        source /etc/os-release
-        wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key | sudo apt-key add -
-        sudo add-apt-repository "deb https://apt.llvm.org/${UBUNTU_CODENAME}/ llvm-toolchain-${UBUNTU_CODENAME}-19 main"
-        sudo apt-get update  # due to new repository
-        # NOTE: Please note the version-specific ${PATH} extension for Clang adding /usr/lib/llvm-19/bin in .ci.sh
-        sudo apt-get install --yes --no-install-recommends -V \
-            clang-19 \
-            libclang-rt-19-dev
-    - name: Install build dependencies (common)
-      run: |-
-        sudo apt-get install --yes --no-install-recommends -V \
-            cmake \
-            docbook2x \
-            gcc-multilib \
-            g++-multilib \
-            lcov \
-            libbsd-dev \
-            lzip \
-            moreutils
-    - name: Perform check "${{ matrix.MODE }}"
-      env:
-        MODE: ${{ matrix.MODE }}
-      run: |
-        env ${{ matrix.FLAT_ENV }} ./.ci.sh
diff --git a/.github/workflows/macos.yml b/.github/workflows/macos.yml
deleted file mode 100644
index 28a44656..00000000
--- a/.github/workflows/macos.yml
+++ /dev/null
@@ -1,66 +0,0 @@
-#                          __  __            _
-#                       ___\ \/ /_ __   __ _| |_
-#                      / _ \\  /| '_ \ / _` | __|
-#                     |  __//  \| |_) | (_| | |_
-#                      \___/_/\_\ .__/ \__,_|\__|
-#                               |_| XML parser
-#
-# Copyright (c) 2020-2024 Sebastian Pipping <sebastian@pipping.org>
-# Copyright (c) 2023      Joyce Brum <joycebrum@google.com>
-# Copyright (c) 2024      Dag-Erling Smørgrav <des@des.dev>
-# Licensed under the MIT license:
-#
-# Permission is  hereby granted,  free of charge,  to any  person obtaining
-# a  copy  of  this  software   and  associated  documentation  files  (the
-# "Software"),  to  deal in  the  Software  without restriction,  including
-# without  limitation the  rights  to use,  copy,  modify, merge,  publish,
-# distribute, sublicense, and/or sell copies of the Software, and to permit
-# persons  to whom  the Software  is  furnished to  do so,  subject to  the
-# following conditions:
-#
-# The above copyright  notice and this permission notice  shall be included
-# in all copies or substantial portions of the Software.
-#
-# THE  SOFTWARE  IS  PROVIDED  "AS  IS",  WITHOUT  WARRANTY  OF  ANY  KIND,
-# EXPRESS  OR IMPLIED,  INCLUDING  BUT  NOT LIMITED  TO  THE WARRANTIES  OF
-# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
-# NO EVENT SHALL THE AUTHORS OR  COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
-# DAMAGES OR  OTHER LIABILITY, WHETHER  IN AN  ACTION OF CONTRACT,  TORT OR
-# OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
-# USE OR OTHER DEALINGS IN THE SOFTWARE.
-
-name: Run macOS CI tasks
-
-on:
-  pull_request:
-  push:
-  schedule:
-    - cron: '0 2 * * 5'  # Every Friday at 2am
-  workflow_dispatch:
-
-permissions:
-  contents: read
-
-jobs:
-  checks:
-    name: Perform checks
-    strategy:
-      matrix:
-        os: [macos-13, macos-15]
-        include:
-          - MODE: cmake-oos
-          - MODE: distcheck
-          - MODE: qa-sh
-            FLAT_ENV: CC=clang CXX=clang++ LD=clang++ QA_SANITIZER=address
-    runs-on: ${{ matrix.os }}
-    steps:
-    - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683  # v4.2.2
-    - name: Install build dependencies
-      run: |
-        sudo rm /usr/local/bin/2to3  # so that "brew link" will work
-        brew bundle                  # acts upon file Brewfile
-    - name: Perform check "${{ matrix.MODE }}"
-      env:
-        MODE: ${{ matrix.MODE }}
-      run: |
-        env ${{ matrix.FLAT_ENV }} ./.ci.sh
diff --git a/.github/workflows/musl.yml b/.github/workflows/musl.yml
deleted file mode 100644
index 94b413b0..00000000
--- a/.github/workflows/musl.yml
+++ /dev/null
@@ -1,69 +0,0 @@
-#                          __  __            _
-#                       ___\ \/ /_ __   __ _| |_
-#                      / _ \\  /| '_ \ / _` | __|
-#                     |  __//  \| |_) | (_| | |_
-#                      \___/_/\_\ .__/ \__,_|\__|
-#                               |_| XML parser
-#
-# Copyright (c) 2025 Sebastian Pipping <sebastian@pipping.org>
-# Licensed under the MIT license:
-#
-# Permission is  hereby granted,  free of charge,  to any  person obtaining
-# a  copy  of  this  software   and  associated  documentation  files  (the
-# "Software"),  to  deal in  the  Software  without restriction,  including
-# without  limitation the  rights  to use,  copy,  modify, merge,  publish,
-# distribute, sublicense, and/or sell copies of the Software, and to permit
-# persons  to whom  the Software  is  furnished to  do so,  subject to  the
-# following conditions:
-#
-# The above copyright  notice and this permission notice  shall be included
-# in all copies or substantial portions of the Software.
-#
-# THE  SOFTWARE  IS  PROVIDED  "AS  IS",  WITHOUT  WARRANTY  OF  ANY  KIND,
-# EXPRESS  OR IMPLIED,  INCLUDING  BUT  NOT LIMITED  TO  THE WARRANTIES  OF
-# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
-# NO EVENT SHALL THE AUTHORS OR  COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
-# DAMAGES OR  OTHER LIABILITY, WHETHER  IN AN  ACTION OF CONTRACT,  TORT OR
-# OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
-# USE OR OTHER DEALINGS IN THE SOFTWARE.
-
-name: Build with musl
-
-on:
-  pull_request:
-  push:
-  schedule:
-    - cron: '0 2 * * 5'  # Every Friday at 2am
-  workflow_dispatch:
-
-permissions:
-  contents: read
-
-jobs:
-  musl:
-    name: Build with musl
-    runs-on: ubuntu-22.04
-    steps:
-    - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683  # v4.2.2
-
-    - name: Install build dependencies
-      run: |-
-        set -x
-        sudo apt-get update
-        sudo apt-get install --yes --no-install-recommends -V \
-            cmake \
-            musl-tools
-
-    - name: Build using musl-tools
-      run: |
-        cmake_args=(
-          -DCMAKE_C_COMPILER=musl-gcc
-          -DCMAKE_CXX_COMPILER=g++  # musl-tools does not support C++
-          -DCMAKE_C_FLAGS='-O1 -pipe -Wall -Wextra -pedantic -Wno-overlength-strings'
-          -DCMAKE_CXX_FLAGS='-O0 -pipe'
-          -DEXPAT_BUILD_DOCS=OFF
-          -DEXPAT_WARNINGS_AS_ERRORS=ON
-        )
-        set -x
-        cmake "${cmake_args[@]}" -S expat/ -B build/
-        make -C build -j$(nproc) VERBOSE=1 all
diff --git a/.github/workflows/perl-integration.yml b/.github/workflows/perl-integration.yml
deleted file mode 100644
index 1662cf94..00000000
--- a/.github/workflows/perl-integration.yml
+++ /dev/null
@@ -1,78 +0,0 @@
-#                          __  __            _
-#                       ___\ \/ /_ __   __ _| |_
-#                      / _ \\  /| '_ \ / _` | __|
-#                     |  __//  \| |_) | (_| | |_
-#                      \___/_/\_\ .__/ \__,_|\__|
-#                               |_| XML parser
-#
-# Copyright (c) 2025 Sebastian Pipping <sebastian@pipping.org>
-# Licensed under the MIT license:
-#
-# Permission is  hereby granted,  free of charge,  to any  person obtaining
-# a  copy  of  this  software   and  associated  documentation  files  (the
-# "Software"),  to  deal in  the  Software  without restriction,  including
-# without  limitation the  rights  to use,  copy,  modify, merge,  publish,
-# distribute, sublicense, and/or sell copies of the Software, and to permit
-# persons  to whom  the Software  is  furnished to  do so,  subject to  the
-# following conditions:
-#
-# The above copyright  notice and this permission notice  shall be included
-# in all copies or substantial portions of the Software.
-#
-# THE  SOFTWARE  IS  PROVIDED  "AS  IS",  WITHOUT  WARRANTY  OF  ANY  KIND,
-# EXPRESS  OR IMPLIED,  INCLUDING  BUT  NOT LIMITED  TO  THE WARRANTIES  OF
-# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
-# NO EVENT SHALL THE AUTHORS OR  COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
-# DAMAGES OR  OTHER LIABILITY, WHETHER  IN AN  ACTION OF CONTRACT,  TORT OR
-# OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
-# USE OR OTHER DEALINGS IN THE SOFTWARE.
-
-name: Run Perl XML::Parser integration tests
-
-on:
-  pull_request:
-  push:
-  schedule:
-    - cron: '0 2 * * 5'  # Every Friday at 2am
-  workflow_dispatch:
-
-permissions:
-  contents: read
-
-jobs:
-  perl_integration:
-    name: Run Perl XML::Parser integration tests
-    runs-on: ubuntu-24.04
-    steps:
-    - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683  # v4.2.2
-
-    - name: Build and replace system Expat
-      run: |
-        set -x
-
-        cd expat/
-        args=(
-            # Replace system Expat
-            -DCMAKE_INSTALL_PREFIX=/usr
-
-            # Build nothing but core library
-            -DEXPAT_BUILD_DOCS=OFF
-            -DEXPAT_BUILD_EXAMPLES=OFF
-            -DEXPAT_BUILD_TESTS=OFF
-            -DEXPAT_BUILD_TOOLS=OFF
-        )
-        cmake "${args[@]}" -S . -B build
-        make -C build VERBOSE=1 -j$(nproc)
-        sudo make -C build VERBOSE=1 install
-
-    - name: Run Perl XML::Parser integration tests
-      run: |
-        set -x
-
-        # NOTE: The version pin is for CI stability.
-        git clone --depth 1 --branch 2.47 https://github.com/cpan-authors/XML-Parser
-        cd XML-Parser/
-
-        perl Makefile.PL
-        make -j$(nproc)
-        make test
diff --git a/.github/workflows/valid-xml.yml b/.github/workflows/valid-xml.yml
deleted file mode 100644
index 580d204a..00000000
--- a/.github/workflows/valid-xml.yml
+++ /dev/null
@@ -1,70 +0,0 @@
-#                          __  __            _
-#                       ___\ \/ /_ __   __ _| |_
-#                      / _ \\  /| '_ \ / _` | __|
-#                     |  __//  \| |_) | (_| | |_
-#                      \___/_/\_\ .__/ \__,_|\__|
-#                               |_| XML parser
-#
-# Copyright (c) 2021-2025 Sebastian Pipping <sebastian@pipping.org>
-# Copyright (c) 2023      Joyce Brum <joycebrum@google.com>
-# Licensed under the MIT license:
-#
-# Permission is  hereby granted,  free of charge,  to any  person obtaining
-# a  copy  of  this  software   and  associated  documentation  files  (the
-# "Software"),  to  deal in  the  Software  without restriction,  including
-# without  limitation the  rights  to use,  copy,  modify, merge,  publish,
-# distribute, sublicense, and/or sell copies of the Software, and to permit
-# persons  to whom  the Software  is  furnished to  do so,  subject to  the
-# following conditions:
-#
-# The above copyright  notice and this permission notice  shall be included
-# in all copies or substantial portions of the Software.
-#
-# THE  SOFTWARE  IS  PROVIDED  "AS  IS",  WITHOUT  WARRANTY  OF  ANY  KIND,
-# EXPRESS  OR IMPLIED,  INCLUDING  BUT  NOT LIMITED  TO  THE WARRANTIES  OF
-# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
-# NO EVENT SHALL THE AUTHORS OR  COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
-# DAMAGES OR  OTHER LIABILITY, WHETHER  IN AN  ACTION OF CONTRACT,  TORT OR
-# OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
-# USE OR OTHER DEALINGS IN THE SOFTWARE.
-
-name: Ensure well-formed and valid XML
-
-on:
-  pull_request:
-  push:
-  schedule:
-    - cron: '0 2 * * 5'  # Every Friday at 2am
-  workflow_dispatch:
-
-permissions:
-  contents: read
-
-jobs:
-  checks:
-    name: Ensure well-formed and valid XML
-    runs-on: ubuntu-22.04
-    steps:
-    - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683  # v4.2.2
-
-    - name: Install build dependencies
-      run: |-
-        set -x
-        sudo apt-get update
-        sudo apt-get install --yes --no-install-recommends -V \
-            docbook \
-            libxml2-utils \
-            w3c-sgml-lib
-
-    - name: Ensure well-formed and valid XML
-      run: |
-        set -x
-
-        # Target offline validation rather than online (for robust CI)
-        sed 's,http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd,file:///usr/share/sgml/docbook/dtd/4.2/docbookx.dtd,' -i expat/doc/xmlwf.xml
-        sed 's,http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd,file:///usr/share/xml/w3c-sgml-lib/schema/dtd/REC-xhtml1-20020801/xhtml1-strict.dtd,' -i expat/doc/reference.html
-
-        # We're using unshare(1) to take internet access away forcefully
-        # so that we'll notice whenever our all-offline validation stops being all-offline
-        unshare --map-root-user --net -- xmllint --nonet --noout --valid expat/doc/reference.html
-        unshare --map-root-user --net -- xmllint --nonet --noout --valid expat/doc/xmlwf.xml
diff --git a/.github/workflows/windows-binaries.yml b/.github/workflows/windows-binaries.yml
deleted file mode 100644
index f314564e..00000000
--- a/.github/workflows/windows-binaries.yml
+++ /dev/null
@@ -1,211 +0,0 @@
-#                          __  __            _
-#                       ___\ \/ /_ __   __ _| |_
-#                      / _ \\  /| '_ \ / _` | __|
-#                     |  __//  \| |_) | (_| | |_
-#                      \___/_/\_\ .__/ \__,_|\__|
-#                               |_| XML parser
-#
-# Copyright (c) 2025 Sebastian Pipping <sebastian@pipping.org>
-# Licensed under the MIT license:
-#
-# Permission is  hereby granted,  free of charge,  to any  person obtaining
-# a  copy  of  this  software   and  associated  documentation  files  (the
-# "Software"),  to  deal in  the  Software  without restriction,  including
-# without  limitation the  rights  to use,  copy,  modify, merge,  publish,
-# distribute, sublicense, and/or sell copies of the Software, and to permit
-# persons  to whom  the Software  is  furnished to  do so,  subject to  the
-# following conditions:
-#
-# The above copyright  notice and this permission notice  shall be included
-# in all copies or substantial portions of the Software.
-#
-# THE  SOFTWARE  IS  PROVIDED  "AS  IS",  WITHOUT  WARRANTY  OF  ANY  KIND,
-# EXPRESS  OR IMPLIED,  INCLUDING  BUT  NOT LIMITED  TO  THE WARRANTIES  OF
-# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
-# NO EVENT SHALL THE AUTHORS OR  COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
-# DAMAGES OR  OTHER LIABILITY, WHETHER  IN AN  ACTION OF CONTRACT,  TORT OR
-# OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
-# USE OR OTHER DEALINGS IN THE SOFTWARE.
-
-name: Build Windows binaries
-
-on:
-  pull_request:
-  push:
-  schedule:
-    - cron: '0 2 * * 5'  # Every Friday at 2am
-  workflow_dispatch:
-
-permissions:
-  contents: read
-
-jobs:
-  windows_binaries:
-    name: Build ${{ matrix.expat_platform }} binaries
-    strategy:
-      fail-fast: false
-      matrix:
-        include:
-          - runs-on: windows-2019
-            cmake_build_type: Debug
-            cmake_generator: Visual Studio 16 2019
-            cmake_platform: Win32
-            expat_char_type: char
-            expat_dll: libexpatd.dll
-            expat_platform: win32
-          - runs-on: windows-2019
-            cmake_build_type: Debug
-            cmake_generator: Visual Studio 16 2019
-            cmake_platform: x64
-            expat_char_type: wchar_t
-            expat_dll: libexpatwd.dll
-            expat_platform: win64
-    defaults:
-      run:
-        shell: bash
-    runs-on: "${{ matrix.runs-on }}"
-    steps:
-    - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683  # v4.2.2
-
-    - uses: microsoft/setup-msbuild@6fb02220983dee41ce7ae257b6f4d8f9bf5ed4ce  # v2
-
-    - name: Install Inno Setup
-      shell: pwsh
-      run: |-
-        Invoke-WebRequest -Uri https://files.jrsoftware.org/is/6/innosetup-6.1.2.exe -OutFile D:\\is.exe
-        Start-Process -FilePath D:\\is.exe -ArgumentList "/VERYSILENT", "/SUPPRESSMSGBOXES", "/NORESTART" -Wait
-
-    - name: 'Add Inno Setup compiler to ${PATH}'
-      run: |-
-        echo 'C:\Program Files (x86)\Inno Setup 6' >> "${GITHUB_PATH}"
-
-    - name: Install Innoextract
-      env:
-        version: 1.9
-      run: |-
-        set -x
-        mkdir innoextract
-        cd innoextract
-        export PATH="${PATH}:/c/msys64/usr/bin"  # for wget
-        wget -q https://github.com/dscharrer/innoextract/releases/download/${version}/innoextract-${version}-windows.zip
-        unzip innoextract-${version}-windows.zip
-        echo "${GITHUB_WORKSPACE}\innoextract" >> "${GITHUB_PATH}"
-
-    - name: Prepare win64 installer
-      if: "${{ matrix.expat_platform == 'win64' }}"
-      run: |-
-        bat_sed_args=(
-          -e 's,-A Win32,-A x64,g'
-          -e 's,win32,win64,g'
-        )
-        inno_sed_args=(
-          -e 's,^OutputDir=win32,OutputDir=win64,'
-          -e 's,win32bin,win64bin,'
-          -e 's,win32\\bin,win64\\bin,g'
-        )
-        set -x
-        cd expat
-        mkdir win64
-
-        sed "${bat_sed_args[@]}" win32/build_expat_iss.bat > win64/build_expat_iss.bat
-        ! grep -i win32 win64/build_expat_iss.bat  # i.e. assert success
-
-        sed "${inno_sed_args[@]}" win32/expat.iss > win64/expat.iss
-        ! grep 'win32\\bin' win64/expat.iss  # i.e. assert success
-        grep win32 win64/expat.iss  # purely informational
-    
-    - name: Build installer
-      env:
-        expat_platform: ${{ matrix.expat_platform }}
-      run: |-
-        set -x
-        cd expat
-
-        cmd < "${expat_platform}"/build_expat_iss.bat
-
-        ls -lh "${expat_platform}"/*.exe
-        cp -v "${expat_platform}"/expat-*bin-*.*.*.exe /d/expat-installer.exe
-
-    - name: Create .zip file from installer content
-      env:
-        expat_platform: ${{ matrix.expat_platform }}
-      run: |-
-        export PATH="${PATH}:/c/msys64/usr/bin"  # for zip
-        set -x
-
-        cd "expat/${expat_platform}"
-        zip_name="$(echo expat-*bin-*.exe | sed 's,\.exe$,.zip,')"
-
-        # Workaround issues with innoextract 1.9 as documented at
-        # https://github.com/dscharrer/innoextract/issues/178#issue-2505033557
-        innoextract -l expat-*bin-*.exe \
-            | awk -F'"' '{print $2}' \
-            | xargs dirname \
-            | sort -u \
-            | xargs mkdir -v -p
-
-        innoextract -e expat-*bin-*.exe
-
-        ls -lh app/Bin/
-
-        ( cd app && zip -9 -r ../"${zip_name}" . )
-
-    - name: Offer binaries for download
-      uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02  # v4.6.2
-      with:
-        name: expat_${{ matrix.expat_platform }}_${{ github.sha }}
-        path: expat/${{ matrix.expat_platform }}/expat-win*bin-*.*.*.*
-        if-no-files-found: error
-
-    - name: Run installer
-      shell: pwsh
-      run: |-
-        Start-Process -FilePath D:\\expat-installer.exe -ArgumentList "/VERYSILENT", "/SUPPRESSMSGBOXES", "/NORESTART" -Wait
-
-    - name: Build installed code — Configure
-      env:
-        cmake_build_type: ${{ matrix.cmake_build_type }}
-        cmake_generator: ${{ matrix.cmake_generator }}
-        cmake_platform: ${{ matrix.cmake_platform }}
-        expat_char_type: ${{ matrix.expat_char_type }}
-      run: |-
-        cmake_args=(
-          -A "${cmake_platform}"
-          -G "${cmake_generator}"
-          -DCMAKE_BUILD_TYPE="${cmake_build_type}"
-          -DEXPAT_CHAR_TYPE="${expat_char_type}"
-          -DEXPAT_WARNINGS_AS_ERRORS=ON
-          -Wdev
-          -Wdeprecated
-        )
-        set -x
-        cd '/c/Program Files (x86)/Expat '*/Source
-        mkdir build
-        cmake -S . -B build "${cmake_args[@]}"
-
-    - name: Build installed code — Build
-      env:
-        cmake_build_type: ${{ matrix.cmake_build_type }}
-      run: |-
-        msbuild_args=(
-          -m
-          -property:Configuration="${cmake_build_type}"
-        )
-        set -x
-        cd '/c/Program Files (x86)/Expat '*/Source/build
-        MSBuild.exe "${msbuild_args[@]}" expat.sln
-
-    - name: Build installed code — Run tests
-      env:
-        cmake_build_type: ${{ matrix.cmake_build_type }}
-        expat_dll: ${{ matrix.expat_dll }}
-      run: |-
-        ctest_args=(
-          --build-config "${cmake_build_type}"
-          --output-on-failure
-          --parallel 2
-        )
-        set -x
-        cd '/c/Program Files (x86)/Expat '*/Source/build
-        cp -v "${cmake_build_type}/${expat_dll}" "tests/${cmake_build_type}/"
-        ctest "${ctest_args[@]}"
diff --git a/.github/workflows/windows-build.yml b/.github/workflows/windows-build.yml
deleted file mode 100644
index 7f629d11..00000000
--- a/.github/workflows/windows-build.yml
+++ /dev/null
@@ -1,116 +0,0 @@
-#                          __  __            _
-#                       ___\ \/ /_ __   __ _| |_
-#                      / _ \\  /| '_ \ / _` | __|
-#                     |  __//  \| |_) | (_| | |_
-#                      \___/_/\_\ .__/ \__,_|\__|
-#                               |_| XML parser
-#
-# Copyright (c) 2025 Sebastian Pipping <sebastian@pipping.org>
-# Licensed under the MIT license:
-#
-# Permission is  hereby granted,  free of charge,  to any  person obtaining
-# a  copy  of  this  software   and  associated  documentation  files  (the
-# "Software"),  to  deal in  the  Software  without restriction,  including
-# without  limitation the  rights  to use,  copy,  modify, merge,  publish,
-# distribute, sublicense, and/or sell copies of the Software, and to permit
-# persons  to whom  the Software  is  furnished to  do so,  subject to  the
-# following conditions:
-#
-# The above copyright  notice and this permission notice  shall be included
-# in all copies or substantial portions of the Software.
-#
-# THE  SOFTWARE  IS  PROVIDED  "AS  IS",  WITHOUT  WARRANTY  OF  ANY  KIND,
-# EXPRESS  OR IMPLIED,  INCLUDING  BUT  NOT LIMITED  TO  THE WARRANTIES  OF
-# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
-# NO EVENT SHALL THE AUTHORS OR  COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
-# DAMAGES OR  OTHER LIABILITY, WHETHER  IN AN  ACTION OF CONTRACT,  TORT OR
-# OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
-# USE OR OTHER DEALINGS IN THE SOFTWARE.
-
-name: Build on Windows
-
-on:
-  pull_request:
-  push:
-  schedule:
-    - cron: '0 2 * * 5'  # Every Friday at 2am
-  workflow_dispatch:
-
-permissions:
-  contents: read
-
-jobs:
-  windows_build:
-    name: Build on Windows (${{ matrix.runs-on }}, ${{ matrix.cmake_platform }}, ${{ matrix.expat_char_type }})
-    strategy:
-      fail-fast: false
-      matrix:
-        include:
-          - runs-on: windows-2019
-            cmake_build_type: Debug
-            cmake_generator: Visual Studio 16 2019
-            cmake_platform: Win32
-            expat_char_type: char
-            expat_dll: libexpatd.dll
-          - runs-on: windows-2022
-            cmake_build_type: Debug
-            cmake_generator: Visual Studio 17 2022
-            cmake_platform: x64
-            expat_char_type: wchar_t
-            expat_dll: libexpatwd.dll
-    defaults:
-      run:
-        shell: bash
-    runs-on: "${{ matrix.runs-on }}"
-    steps:
-    - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683  # v4.2.2
-
-    - uses: microsoft/setup-msbuild@6fb02220983dee41ce7ae257b6f4d8f9bf5ed4ce  # v2
-
-    - name: Configure
-      env:
-        cmake_build_type: ${{ matrix.cmake_build_type }}
-        cmake_generator: ${{ matrix.cmake_generator }}
-        cmake_platform: ${{ matrix.cmake_platform }}
-        expat_char_type: ${{ matrix.expat_char_type }}
-      run: |-
-        cmake_args=(
-          -A "${cmake_platform}"
-          -G "${cmake_generator}"
-          -DCMAKE_BUILD_TYPE="${cmake_build_type}"
-          -DEXPAT_CHAR_TYPE="${expat_char_type}"
-          -DEXPAT_WARNINGS_AS_ERRORS=ON
-          -Wdev
-          -Wdeprecated
-        )
-        set -x
-        cd expat
-        mkdir build
-        cmake -S . -B build "${cmake_args[@]}"
-
-    - name: Build
-      env:
-        cmake_build_type: ${{ matrix.cmake_build_type }}
-      run: |-
-        msbuild_args=(
-          -m
-          -property:Configuration="${cmake_build_type}"
-        )
-        set -x
-        cd expat/build
-        MSBuild.exe "${msbuild_args[@]}" expat.sln
-
-    - name: Run tests
-      env:
-        cmake_build_type: ${{ matrix.cmake_build_type }}
-        expat_dll: ${{ matrix.expat_dll }}
-      run: |-
-        ctest_args=(
-          --build-config "${cmake_build_type}"
-          --output-on-failure
-          --parallel 2
-        )
-        set -x
-        cd expat/build
-        cp -v "${cmake_build_type}/${expat_dll}" "tests/${cmake_build_type}/"
-        ctest "${ctest_args[@]}"