diff --git a/src/ahriman/core/alpm/pkgbuild_parser.py b/src/ahriman/core/alpm/pkgbuild_parser.py
index 94e2be88..f88b64d7 100644
--- a/src/ahriman/core/alpm/pkgbuild_parser.py
+++ b/src/ahriman/core/alpm/pkgbuild_parser.py
@@ -100,7 +100,7 @@ class PkgbuildParser(shlex.shlex):
         self._io = stream  # direct access without type casting
 
         # ignore substitution and extend bash symbols
-        self.wordchars += "${}#:+-@"
+        self.wordchars += "${}#:+-@!"
         # in case of default behaviour, it will ignore, for example, segment part of url outside of quotes
         self.commenters = ""
 
diff --git a/src/ahriman/models/pkgbuild.py b/src/ahriman/models/pkgbuild.py
index 559b0358..6c33c2e8 100644
--- a/src/ahriman/models/pkgbuild.py
+++ b/src/ahriman/models/pkgbuild.py
@@ -85,7 +85,7 @@ class Pkgbuild(Mapping[str, Any]):
         # however, pkgname is not presented is "package()" functions which we are parsing here too,
         # thus, in our terms, it is optional too
         if "pkgbase" not in fields and "pkgname" in fields:
-            fields["pkgbase"] = fields["pkgname"]
+            fields["pkgbase"] = PkgbuildPatch("pkgbase", fields["pkgname"].value)
 
         return cls({key: value for key, value in fields.items() if key})
 
diff --git a/tests/ahriman/models/test_pkgbuild.py b/tests/ahriman/models/test_pkgbuild.py
index e77c0429..b45df6a4 100644
--- a/tests/ahriman/models/test_pkgbuild.py
+++ b/tests/ahriman/models/test_pkgbuild.py
@@ -140,3 +140,249 @@ def test_len(pkgbuild_ahriman: Pkgbuild) -> None:
     must return length of the map
     """
     assert len(pkgbuild_ahriman) == len(pkgbuild_ahriman.fields)
+
+
+def test_parse_ahriman(resource_path_root: Path) -> None:
+    """
+    must parse real PKGBUILDs correctly (ahriman)
+    """
+    pkgbuild = Pkgbuild.from_file(resource_path_root / "models" / "package_ahriman_pkgbuild")
+    values = {key: value.value for key, value in pkgbuild.fields.items() if not value.is_function}
+    assert values == {
+        "pkgbase": "ahriman",
+        "pkgname": "ahriman",
+        "pkgver": "2.6.0",
+        "pkgrel": "1",
+        "pkgdesc": "ArcH linux ReposItory MANager",
+        "arch": ["any"],
+        "url": "https://github.com/arcan1s/ahriman",
+        "license": ["GPL3"],
+        "depends": [
+            "devtools",
+            "git",
+            "pyalpm",
+            "python-cerberus",
+            "python-inflection",
+            "python-passlib",
+            "python-requests",
+            "python-setuptools",
+            "python-srcinfo",
+        ],
+        "makedepends": [
+            "python-build",
+            "python-installer",
+            "python-wheel",
+        ],
+        "optdepends": [
+            "breezy: -bzr packages support",
+            "darcs: -darcs packages support",
+            "mercurial: -hg packages support",
+            "python-aioauth-client: web server with OAuth2 authorization",
+            "python-aiohttp: web server",
+            "python-aiohttp-debugtoolbar: web server with enabled debug panel",
+            "python-aiohttp-jinja2: web server",
+            "python-aiohttp-security: web server with authorization",
+            "python-aiohttp-session: web server with authorization",
+            "python-boto3: sync to s3",
+            "python-cryptography: web server with authorization",
+            "python-requests-unixsocket: client report to web server by unix socket",
+            "python-jinja: html report generation",
+            "rsync: sync by using rsync",
+            "subversion: -svn packages support",
+        ],
+        "source": [
+            "https://github.com/arcan1s/ahriman/releases/download/$pkgver/$pkgname-$pkgver-src.tar.xz",
+            "ahriman.sysusers",
+            "ahriman.tmpfiles",
+        ],
+        "backup": [
+            "etc/ahriman.ini",
+            "etc/ahriman.ini.d/logging.ini",
+        ],
+        "sha512sums": [
+            "ec1f64e463455761d72be7f7b8b51b3b4424685c96a2d5eee6afa1c93780c8d7f8a39487a2f2f3bd83d2b58a93279e1392a965a4b905795e58ca686fb21123a1",
+            "53d37efec812afebf86281716259f9ea78a307b83897166c72777251c3eebcb587ecee375d907514781fb2a5c808cbb24ef9f3f244f12740155d0603bf213131",
+            "62b2eccc352d33853ef243c9cddd63663014aa97b87242f1b5bc5099a7dbd69ff3821f24ffc58e1b7f2387bd4e9e9712cc4c67f661b1724ad99cdf09b3717794",
+        ],
+    }
+
+
+def test_parse_gcc10(resource_path_root: Path) -> None:
+    """
+    must parse real PKGBUILDs correctly (gcc10)
+    """
+    pkgbuild = Pkgbuild.from_file(resource_path_root / "models" / "package_gcc10_pkgbuild")
+    values = {key: value.value for key, value in pkgbuild.fields.items() if not value.is_function}
+    assert values == {
+        "pkgbase": "gcc10",
+        "pkgname": [
+            "${pkgbase}",
+            "${pkgbase}-libs",
+            "${pkgbase}-fortran",
+        ],
+        "pkgver": "10.5.0",
+        "_majorver": "${pkgver%%.*}",
+        "_islver": "0.24",
+        "pkgrel": "2",
+        "pkgdesc": "The GNU Compiler Collection (10.x.x)",
+        "arch": ["x86_64"],
+        "url": "https://gcc.gnu.org",
+        "license": [
+            "GPL-3.0-or-later",
+            "LGPL-3.0+",
+            "GFDL-1.3",
+            "LicenseRef-custom",
+        ],
+        "makedepends": [
+            "binutils",
+            "doxygen",
+            "git",
+            "libmpc",
+            "python",
+        ],
+        "checkdepends": [
+            "dejagnu",
+            "inetutils",
+        ],
+        "options": [
+            "!emptydirs",
+            "!lto",
+            "!buildflags",
+        ],
+        "source": [
+            "https://sourceware.org/pub/gcc/releases/gcc-${pkgver}/gcc-${pkgver}.tar.xz",
+            "https://sourceware.org/pub/gcc/releases/gcc-${pkgver}/gcc-${pkgver}.tar.xz.sig",
+            "https://sourceware.org/pub/gcc/infrastructure/isl-${_islver}.tar.bz2",
+            "c89",
+            "c99",
+        ],
+        "validpgpkeys": [
+            "F3691687D867B81B51CE07D9BBE43771487328A9",
+            "86CFFCA918CF3AF47147588051E8B148A9999C34",
+            "13975A70E63C361C73AE69EF6EEB81F8981C74C7",
+            "D3A93CAD751C2AF4F8C7AD516C35B99309B5FA62",
+        ],
+        "md5sums": [
+            "c7d1958570fbd1cd859b015774b9987a",
+            "SKIP",
+            "dd2f7b78e118c25bd96134a52aae7f4d",
+            "d5fd2672deb5f97a2c4bdab486470abe",
+            "d99ba9f4bd860e274f17040ee51cd1bf",
+        ],
+        "b2sums": [
+            "9b71761f4015649514677784443886e59733ac3845f7dfaa4343f46327d36c08c403c444b9e492b870ac0b3f2e3568f972b7700a0ef05a497fb4066079b3143b",
+            "SKIP",
+            "88a178dad5fe9c33be5ec5fe4ac9abc0e075a86cff9184f75cedb7c47de67ce3be273bd0db72286ba0382f4016e9d74855ead798ad7bccb015b853931731828e",
+            "a76d19c7830b0a141302890522086fc1548c177611501caac7e66d576e541b64ca3f6e977de715268a9872dfdd6368a011b92e01f7944ec0088f899ac0d2a2a5",
+            "02b655b5668f7dea51c3b3e4ff46d5a4aee5a04ed5e26b98a6470f39c2e98ddc0519bffeeedd982c31ef3c171457e4d1beaff32767d1aedd9346837aac4ec3ee",
+        ],
+        "_CHOST": "${CHOST:=}",
+        "_MAKEFLAGS": "${MAKEFLAGS:=}",
+        "_libdir": "usr/lib/gcc/${CHOST}/${pkgver%%+*}",
+    }
+
+
+def test_parse_jellyfin_ffmpeg6_bin(resource_path_root: Path) -> None:
+    """
+    must parse real PKGBUILDs correctly (jellyfin-ffmpeg6-bin)
+    """
+    pkgbuild = Pkgbuild.from_file(resource_path_root / "models" / "package_jellyfin-ffmpeg6-bin_pkgbuild")
+    values = {key: value.value for key, value in pkgbuild.fields.items() if not value.is_function}
+    assert values == {
+        "pkgbase": "jellyfin-ffmpeg6-bin",
+        "pkgname": "jellyfin-ffmpeg6-bin",
+        "pkgver": "6.0",
+        "pkgrel": "6",
+        "pkgdesc": "FFmpeg6 binary version for Jellyfin",
+        "arch": ["x86_64", "aarch64"],
+        "url": "https://github.com/jellyfin/jellyfin-ffmpeg",
+        "license": ["GPL3"],
+        "depends_x86_64": ["glibc>=2.23"],
+        "depends_aarch64": ["glibc>=2.27"],
+        "optdepends": [
+            "intel-media-driver: for Intel VAAPI support (Broadwell and newer)",
+            "intel-media-sdk: for Intel Quick Sync Video",
+            "onevpl-intel-gpu: for Intel Quick Sync Video (12th Gen and newer)",
+            "intel-compute-runtime: for Intel OpenCL runtime based Tonemapping",
+            "libva-intel-driver: for Intel legacy VAAPI support (10th Gen and older)",
+            "libva-mesa-driver: for AMD VAAPI support",
+            "nvidia-utils: for Nvidia NVDEC/NVENC support",
+            "opencl-amd: for AMD OpenCL runtime based Tonemapping",
+            "vulkan-radeon: for AMD RADV Vulkan support",
+            "vulkan-intel: for Intel ANV Vulkan support",
+        ],
+        "conflicts": [
+            "jellyfin-ffmpeg",
+            "jellyfin-ffmpeg5",
+            "jellyfin-ffmpeg5-bin",
+            "jellyfin-ffmpeg6",
+        ],
+        "source_x86_64": ["https://repo.jellyfin.org/releases/ffmpeg/${pkgver}-${pkgrel}/jellyfin-ffmpeg_${pkgver}-${pkgrel}_portable_linux64-gpl.tar.xz"],
+        "source_aarch64": ["https://repo.jellyfin.org/releases/ffmpeg/${pkgver}-${pkgrel}/jellyfin-ffmpeg_${pkgver}-${pkgrel}_portable_linuxarm64-gpl.tar.xz"],
+        "sha256sums_x86_64": ["32cbe40942d26072faa1182835ccc89029883766de11778c731b529aa632ff37"],
+        "sha256sums_aarch64": ["22b8f2a3c92c6b1c9e6830a6631f08f3f0a7ae80739ace71ad30704a28045184"],
+    }
+
+
+def test_parse_tpacpi_bat_git(resource_path_root: Path) -> None:
+    """
+    must parse real PKGBUILDs correctly (tpacpi-bat-git)
+    """
+    pkgbuild = Pkgbuild.from_file(resource_path_root / "models" / "package_tpacpi-bat-git_pkgbuild")
+    values = {key: value.value for key, value in pkgbuild.fields.items() if not value.is_function}
+    assert values == {
+        "pkgbase": "tpacpi-bat-git",
+        "pkgname": "tpacpi-bat-git",
+        "pkgver": "3.1.r13.g4959b52",
+        "pkgrel": "1",
+        "pkgdesc": "A Perl script with ACPI calls for recent ThinkPads which are not supported by tp_smapi",
+        "arch": ["any"],
+        "url": "https://github.com/teleshoes/tpacpi-bat",
+        "license": ["GPL3"],
+        "depends": ["perl", "acpi_call"],
+        "makedepends": ["git"],
+        "provides": ["tpacpi-bat"],
+        "conflicts": ["tpacpi-bat"],
+        "backup": ["etc/conf.d/tpacpi"],
+        "source": ["git+https://github.com/teleshoes/tpacpi-bat.git"],
+        "b2sums": ["SKIP"],
+    }
+
+
+def test_parse_yay(resource_path_root: Path) -> None:
+    """
+    must parse real PKGBUILDs correctly (yay)
+    """
+    pkgbuild = Pkgbuild.from_file(resource_path_root / "models" / "package_yay_pkgbuild")
+    values = {key: value.value for key, value in pkgbuild.fields.items() if not value.is_function}
+    assert values == {
+        "pkgbase": "yay",
+        "pkgname": "yay",
+        "pkgver": "12.3.5",
+        "pkgrel": "1",
+        "pkgdesc": "Yet another yogurt. Pacman wrapper and AUR helper written in go.",
+        "arch": [
+            "i686",
+            "pentium4",
+            "x86_64",
+            "arm",
+            "armv7h",
+            "armv6h",
+            "aarch64",
+            "riscv64",
+        ],
+        "url": "https://github.com/Jguer/yay",
+        "options": ["!lto"],
+        "license": ["GPL-3.0-or-later"],
+        "depends": [
+            "pacman>6.1",
+            "git",
+        ],
+        "optdepends": [
+            "sudo: privilege elevation",
+            "doas: privilege elevation",
+        ],
+        "makedepends": ["go>=1.21"],
+        "source": ["${pkgname}-${pkgver}.tar.gz::https://github.com/Jguer/yay/archive/v${pkgver}.tar.gz"],
+        "sha256sums": ["2fb6121a6eb4c5e6afaf22212b2ed15022500a4bc34bb3dc0f9782c1d43c3962"],
+    }