Fix crash when running moulti.

CHANGELOG.md

@@ -6,6 +6,12 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/).
 This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html) for its CLI (Command-Line Interface), i.e. for the `moulti` command.
 Although Moulti's Python packages, modules and functions are obviously available, they do not constitute a public API yet.
 
+## Unreleased
+
+### Fixed
+
+- Running `moulti` without any argument used to crash since v1.30.0.
+
 ## [1.32.0] - 2025-02-13
 
 ### Changed

src/moulti/cli.py

@@ -202,6 +202,8 @@ def adjust_cli_args(args: list[str]) -> None:
 	their command line, e.g. "moulti run -- ls -al" instead of "moulti run ls -al".
 	Detect such cases and inject "--" if it is missing.
 	"""
+	if len(args) < 2:
+		return
 	if args[1] == 'run':
 		inject_double_dash_before_command(args, 2)
 	elif args[1] in ('manpage', 'diff') and args[2] == 'run':