diff --git a/src/reuse/__main__.py b/src/reuse/__main__.py
index 952a87b7..f5c3e260 100644
--- a/src/reuse/__main__.py
+++ b/src/reuse/__main__.py
@@ -4,9 +4,8 @@
 
 """Entry module for reuse."""
 
-import sys
-
 if __name__ == "__main__":
-    from ._main import main
+    from .cli.main import main
 
-    sys.exit(main())
+    # pylint: disable=no-value-for-parameter
+    main()
diff --git a/src/reuse/cli/__init__.py b/src/reuse/cli/__init__.py
index c0a7798a..2138eeb2 100644
--- a/src/reuse/cli/__init__.py
+++ b/src/reuse/cli/__init__.py
@@ -2,6 +2,8 @@
 #
 # SPDX-License-Identifier: GPL-3.0-or-later
 
+"""All command-line functionality."""
+
 from . import (
     annotate,
     convert_dep5,
diff --git a/src/reuse/cli/annotate.py b/src/reuse/cli/annotate.py
index 25f92cf8..f32fc9b3 100644
--- a/src/reuse/cli/annotate.py
+++ b/src/reuse/cli/annotate.py
@@ -44,7 +44,7 @@
 )
 from ..i18n import _
 from ..project import Project
-from .common import ClickObj, MutexOption, spdx_identifier
+from .common import ClickObj, MutexOption, requires_project, spdx_identifier
 from .main import main
 
 _LOGGER = logging.getLogger(__name__)
@@ -284,6 +284,7 @@ def get_reuse_info(
 )
 
 
+@requires_project
 @main.command(name="annotate", help=_HELP)
 @click.option(
     "--copyright",
@@ -323,7 +324,7 @@ def get_reuse_info(
     "--style",
     "-s",
     cls=MutexOption,
-    mutually_exclusive=["skip_unrecognised"],  # FIXME: test
+    mutually_exclusive=["skip_unrecognised"],
     type=click.Choice(list(NAME_STYLE_MAP)),
     help=_("Comment style to use."),
 )
@@ -359,8 +360,6 @@ def get_reuse_info(
 @click.option(
     "--single-line",
     cls=MutexOption,
-    # FIXME: This results in an ugly error message that shows 'multi_line'
-    # instead of '--multi-line'.
     mutually_exclusive=_LINE_MUTEX,
     is_flag=True,
     help=_("Force single-line comment style."),
@@ -407,7 +406,6 @@ def get_reuse_info(
 @click.option(
     "--skip-unrecognized",
     "skip_unrecognised",
-    # FIXME: test if mutex is applied.
     is_flag=True,
     hidden=True,
 )
@@ -444,6 +442,7 @@ def annotate(
     skip_existing: bool,
     paths: Sequence[Path],
 ) -> None:
+    # pylint: disable=too-many-arguments,too-many-locals,missing-function-docstring
     project = cast(Project, obj.project)
 
     test_mandatory_option_required(copyrights, licenses, contributors)
diff --git a/src/reuse/cli/common.py b/src/reuse/cli/common.py
index 7840dd1f..88189bfc 100644
--- a/src/reuse/cli/common.py
+++ b/src/reuse/cli/common.py
@@ -5,7 +5,7 @@
 """Utilities that are common to multiple CLI commands."""
 
 from dataclasses import dataclass
-from typing import Any, Mapping, Optional
+from typing import Any, Callable, Mapping, Optional, TypeVar
 
 import click
 from boolean.boolean import Expression, ParseError
@@ -15,6 +15,16 @@
 from ..i18n import _
 from ..project import Project
 
+F = TypeVar("F", bound=Callable)
+
+
+def requires_project(f: F) -> F:
+    """A decorator to mark subcommands that require a :class:`Project` object.
+    Make sure to apply this decorator _first_.
+    """
+    setattr(f, "requires_project", True)
+    return f
+
 
 @dataclass(frozen=True)
 class ClickObj:
diff --git a/src/reuse/cli/convert_dep5.py b/src/reuse/cli/convert_dep5.py
index 99d4911a..f213bc33 100644
--- a/src/reuse/cli/convert_dep5.py
+++ b/src/reuse/cli/convert_dep5.py
@@ -13,7 +13,7 @@
 from ..global_licensing import ReuseDep5
 from ..i18n import _
 from ..project import Project
-from .common import ClickObj
+from .common import ClickObj, requires_project
 from .main import main
 
 _HELP = _(
@@ -23,9 +23,11 @@
 )
 
 
+@requires_project
 @main.command(name="convert-dep5", help=_HELP)
 @click.pass_obj
 def convert_dep5(obj: ClickObj) -> None:
+    # pylint: disable=missing-function-docstring
     project = cast(Project, obj.project)
     if not (project.root / ".reuse/dep5").exists():
         raise click.UsageError(_("no '.reuse/dep5' file"))
diff --git a/src/reuse/cli/download.py b/src/reuse/cli/download.py
index d3a31873..a1d57b91 100644
--- a/src/reuse/cli/download.py
+++ b/src/reuse/cli/download.py
@@ -20,7 +20,7 @@
 from ..project import Project
 from ..report import ProjectReport
 from ..types import StrPath
-from .common import ClickObj, MutexOption
+from .common import ClickObj, MutexOption, requires_project
 from .main import main
 
 _LOGGER = logging.getLogger(__name__)
@@ -113,6 +113,7 @@ def _successfully_downloaded(destination: StrPath) -> None:
 )
 
 
+@requires_project
 @main.command(name="download", help=_HELP)
 @click.option(
     "--all",
@@ -152,7 +153,7 @@ def download(
     output: Optional[Path],
     source: Optional[Path],
 ) -> None:
-
+    # pylint: disable=missing-function-docstring
     if all_ and license_:
         raise click.UsageError(
             _(
diff --git a/src/reuse/cli/lint.py b/src/reuse/cli/lint.py
index 11d3305b..f4545081 100644
--- a/src/reuse/cli/lint.py
+++ b/src/reuse/cli/lint.py
@@ -18,7 +18,7 @@
 from ..lint import format_json, format_lines, format_plain
 from ..project import Project
 from ..report import ProjectReport
-from .common import ClickObj, MutexOption
+from .common import ClickObj, MutexOption, requires_project
 from .main import main
 
 _OUTPUT_MUTEX = ["quiet", "json", "plain", "lines"]
@@ -61,6 +61,7 @@
 )
 
 
+@requires_project
 @main.command(name="lint", help=_HELP)
 @click.option(
     "--quiet",
@@ -98,6 +99,7 @@
 def lint(
     obj: ClickObj, quiet: bool, json: bool, plain: bool, lines: bool
 ) -> None:
+    # pylint: disable=missing-function-docstring
     report = ProjectReport.generate(
         cast(Project, obj.project),
         do_checksum=False,
diff --git a/src/reuse/cli/lint_file.py b/src/reuse/cli/lint_file.py
index 0b42d9db..7de7d83e 100644
--- a/src/reuse/cli/lint_file.py
+++ b/src/reuse/cli/lint_file.py
@@ -17,7 +17,7 @@
 from ..lint import format_lines_subset
 from ..project import Project
 from ..report import ProjectSubsetReport
-from .common import ClickObj, MutexOption
+from .common import ClickObj, MutexOption, requires_project
 from .main import main
 
 _OUTPUT_MUTEX = ["quiet", "lines"]
@@ -29,6 +29,7 @@
 )
 
 
+@requires_project
 @main.command(name="lint-file", help=_HELP)
 @click.option(
     "--quiet",
@@ -56,6 +57,7 @@
 def lint_file(
     obj: ClickObj, quiet: bool, lines: bool, files: Collection[Path]
 ) -> None:
+    # pylint: disable=missing-function-docstring
     project = cast(Project, obj.project)
     subset_files = {Path(file_) for file_ in files}
     for file_ in subset_files:
diff --git a/src/reuse/cli/main.py b/src/reuse/cli/main.py
index aebe161b..b2e2a955 100644
--- a/src/reuse/cli/main.py
+++ b/src/reuse/cli/main.py
@@ -74,7 +74,8 @@
     + "\n\n"
     + _("Support the FSFE's work:")
     + "\n\n"
-    # FIXME: Indent this.
+    # Indent next paragraph.
+    + "   "
     + _(
         "Donations are critical to our strength and autonomy. They enable us"
         " to continue working for Free Software wherever necessary. Please"
@@ -133,6 +134,7 @@ def main(
     no_multiprocessing: bool,
     root: Optional[Path],
 ) -> None:
+    # pylint: disable=missing-function-docstring,too-many-arguments
     setup_logging(level=logging.DEBUG if debug else logging.WARNING)
 
     # Very stupid workaround to not print a DEP5 deprecation warning in the
@@ -143,29 +145,31 @@ def main(
     if not suppress_deprecation:
         warnings.filterwarnings("default", module="reuse")
 
-    # FIXME: Not needed for all subcommands.
-    if root is None:
-        root = find_root()
-    if root is None:
-        root = Path.cwd()
-
-    # FIXME: Not needed for all subcommands.
-    try:
-        project = Project.from_directory(root)
-    # FileNotFoundError and NotADirectoryError don't need to be caught because
-    # argparse already made sure of these things.
-    except GlobalLicensingParseError as error:
-        raise click.UsageError(
-            _(
-                "'{path}' could not be parsed. We received the following error"
-                " message: {message}"
-            ).format(path=error.source, message=str(error))
-        ) from error
-
-    except (GlobalLicensingConflict, OSError) as error:
-        raise click.UsageError(str(error)) from error
-    project.include_submodules = include_submodules
-    project.include_meson_subprojects = include_meson_subprojects
+    project: Optional[Project] = None
+    if ctx.invoked_subcommand:
+        cmd = main.get_command(ctx, ctx.invoked_subcommand)
+        if getattr(cmd, "requires_project", False):
+            if root is None:
+                root = find_root()
+            if root is None:
+                root = Path.cwd()
+
+            try:
+                project = Project.from_directory(root)
+            # FileNotFoundError and NotADirectoryError don't need to be caught
+            # because argparse already made sure of these things.
+            except GlobalLicensingParseError as error:
+                raise click.UsageError(
+                    _(
+                        "'{path}' could not be parsed. We received the"
+                        " following error message: {message}"
+                    ).format(path=error.source, message=str(error))
+                ) from error
+
+            except (GlobalLicensingConflict, OSError) as error:
+                raise click.UsageError(str(error)) from error
+            project.include_submodules = include_submodules
+            project.include_meson_subprojects = include_meson_subprojects
 
     ctx.obj = ClickObj(
         no_multiprocessing=no_multiprocessing,
diff --git a/src/reuse/cli/spdx.py b/src/reuse/cli/spdx.py
index 25a9a8e0..115dd25d 100644
--- a/src/reuse/cli/spdx.py
+++ b/src/reuse/cli/spdx.py
@@ -7,16 +7,16 @@
 
 import contextlib
 import logging
-from typing import Optional, cast
 import sys
+from typing import Optional, cast
 
 import click
 
-from ..project import Project
 from .. import _IGNORE_SPDX_PATTERNS
-from ..report import ProjectReport
 from ..i18n import _
-from .common import ClickObj
+from ..project import Project
+from ..report import ProjectReport
+from .common import ClickObj, requires_project
 from .main import main
 
 _LOGGER = logging.getLogger(__name__)
@@ -24,6 +24,7 @@
 _HELP = _("Generate an SPDX bill of materials.")
 
 
+@requires_project
 @main.command(name="spdx", help=_HELP)
 @click.option(
     "--output",
@@ -68,6 +69,8 @@ def spdx(
     creator_person: Optional[str],
     creator_organization: Optional[str],
 ) -> None:
+    # pylint: disable=missing-function-docstring
+
     # The SPDX spec mandates that a creator must be specified when a license
     # conclusion is made, so here we enforce that. More context:
     # https://github.com/fsfe/reuse-tool/issues/586#issuecomment-1310425706
diff --git a/src/reuse/cli/supported_licenses.py b/src/reuse/cli/supported_licenses.py
index 1bd82eb1..65c8df96 100644
--- a/src/reuse/cli/supported_licenses.py
+++ b/src/reuse/cli/supported_licenses.py
@@ -17,6 +17,7 @@
 
 @main.command(name="supported-licenses", help=_HELP)
 def supported_licenses() -> None:
+    # pylint: disable=missing-function-docstring
     licenses = _load_license_list(_LICENSES)[1]
 
     for license_id, license_info in licenses.items():
diff --git a/src/reuse/report.py b/src/reuse/report.py
index f3e5eeaa..dd2a0355 100644
--- a/src/reuse/report.py
+++ b/src/reuse/report.py
@@ -143,8 +143,8 @@ def _generate_file_reports(
 
 def _process_error(error: Exception, path: StrPath) -> None:
     # Facilitate better debugging by being able to quit the program.
-    if isinstance(error, bdb.BdbQuit):
-        raise bdb.BdbQuit() from error
+    if isinstance(error, (bdb.BdbQuit, KeyboardInterrupt)):
+        raise error
     if isinstance(error, (OSError, UnicodeError)):
         _LOGGER.error(
             _("Could not read '{path}'").format(path=path),
diff --git a/tests/test_cli_annotate.py b/tests/test_cli_annotate.py
index 331b53cd..f7b5f892 100644
--- a/tests/test_cli_annotate.py
+++ b/tests/test_cli_annotate.py
@@ -621,7 +621,12 @@ def test_skip_unrecognised(self, fake_repository, skip_unrecognised):
         assert result.exit_code == 0
         assert "Skipped unrecognised file 'foo.foo'" in result.output
 
-    def test_skip_unrecognised_and_style_mutex(self, fake_repository):
+    @pytest.mark.parametrize(
+        "skip_unrecognised", ["--skip-unrecognised", "--skip-unrecognized"]
+    )
+    def test_skip_unrecognised_and_style_mutex(
+        self, fake_repository, skip_unrecognised
+    ):
         """--skip-unrecognised and --style are mutually exclusive."""
         simple_file = fake_repository / "foo.foo"
         simple_file.write_text("pass")
@@ -635,7 +640,7 @@ def test_skip_unrecognised_and_style_mutex(self, fake_repository):
                 "--copyright",
                 "Jane Doe",
                 "--style=c",
-                "--skip-unrecognised",
+                skip_unrecognised,
                 "foo.foo",
             ],
         )
diff --git a/tests/test_cli_convert_dep5.py b/tests/test_cli_convert_dep5.py
index 5b8c32ba..679fc351 100644
--- a/tests/test_cli_convert_dep5.py
+++ b/tests/test_cli_convert_dep5.py
@@ -11,6 +11,8 @@
 from reuse._util import cleandoc_nl
 from reuse.cli.main import main
 
+# pylint: disable=unused-argument
+
 
 class TestConvertDep5:
     """Tests for convert-dep5."""
diff --git a/tests/test_cli_spdx.py b/tests/test_cli_spdx.py
index 613a548a..b9bb466c 100644
--- a/tests/test_cli_spdx.py
+++ b/tests/test_cli_spdx.py
@@ -15,6 +15,8 @@
 
 from reuse.cli.main import main
 
+# pylint: disable=unused-argument
+
 
 class TestSpdx:
     """Tests for spdx."""