Allow commands with no options

CHANGELOG.md

@@ -15,6 +15,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 - Remove explicit reference to `click.BaseCommand` and `click.MultiCommand` objects in anticipation of their deprecation. (Pull #82)
 - Properly ensure whitespace is trimmed from the usage string. (Pull #83)
 - Propagate `context_settings` to `click.Context`-like objects. (Pull #79)
+- Allow commands with no options. (Pull #84)
 
 ## 0.8.1 - 2023-09-18
 

mkdocs_click/_docs.py

@@ -252,9 +252,10 @@ def _make_plain_options(ctx: click.Context, show_hidden: bool = False) -> Iterat
         # First line is redundant "Options"
         option_lines = option_lines[1:]
 
-        if not option_lines:  # pragma: no cover
-            # We expect at least `--help` to be present.
-            raise RuntimeError("Expected at least one option")
+        # It's possible to define a command with no options, especially common when
+        # forwarding arguments to an external process.
+        if not option_lines:
+            return
 
         yield "**Options:**"
         yield ""
@@ -335,6 +336,12 @@ def _make_table_options(ctx: click.Context, show_hidden: bool = False) -> Iterat
 
     options = [param for param in ctx.command.get_params(ctx) if isinstance(param, click.Option)]
     options = [option for option in options if not option.hidden or show_hidden]
+
+    # It's possible to define a command with no options, especially common when
+    # forwarding arguments to an external process.
+    if not options:
+        return
+
     option_rows = [_format_table_option_row(option) for option in options]
 
     yield "**Options:**"

pyproject.toml

@@ -69,9 +69,13 @@ dependencies = [
 ]
 [tool.hatch.envs.test.scripts]
 test = [
-    "pytest -q {args}",
+    "pytest {args}",
     "bash .tools/test.sh {args}",
 ]
+[tool.hatch.envs.test.overrides]
+platform.windows.scripts = [
+    { key = "test", value = "pytest {args}" },
+]
 
 [tool.hatch.envs.types]
 dependencies = [

tests/test_docs.py

@@ -42,6 +42,13 @@ def hello_ascii_art():
     """
 
 
+@click.command(context_settings={"help_option_names": []})
+def hello_no_options():
+    """
+    Hello, world!
+    """
+
+
 HELLO_EXPECTED = dedent(
     """
     # hello
@@ -64,6 +71,21 @@ def hello_ascii_art():
 ).lstrip()
 
 
+HELLO_EXPECTED_NO_OPTIONS = dedent(
+    """
+    # hello
+
+    Hello, world!
+
+    **Usage:**
+
+    ```text
+    hello [OPTIONS]
+    ```
+    """
+).lstrip()
+
+
 def test_basic():
     output = "\n".join(make_command_docs("hello", hello))
     assert output == HELLO_EXPECTED
@@ -97,6 +119,11 @@ def test_basic_ascii_art():
     assert output == HELLO_EXPECTED
 
 
+def test_basic_no_options():
+    output = "\n".join(make_command_docs("hello", hello_no_options))
+    assert output == HELLO_EXPECTED_NO_OPTIONS
+
+
 @click.command()
 @click.option("-d", "--debug", help="Include debug output")
 @click.option("--choice", type=click.Choice(["foo", "bar"]), default="foo")