nicer output for --help

Cargo.toml

@@ -14,6 +14,9 @@ exclude = [".idea/", "Cross.toml", "*.sh", "*.py", ".drone.yml"]
 #resolver = "2"
 #license-file = "LICENSE"
 
+[badges]
+maintenance = { status = "experimental" }
+
 [features]
 default = ["multi-threaded"]
 multi-threaded = ["rayon"]

src/parameters.rs

@@ -3,19 +3,31 @@
 use std::path::PathBuf;
 
 use crate::extension_set::ExtensionSet;
-use clap::{Clap};
+use clap::{Clap, AppSettings};
 use smartstring::{LazyCompact, SmartString};
 
 #[derive(Clap, PartialEq, Debug)]
 pub enum OutputFormat {
+	/// A Bourne shell compatible script.
 	Script,
+	/// Plain text.
 	Text,
 }
 
 // TODO: convert this to macro style?: https://docs.rs/clap/3.0.0-beta.2/clap/index.html#using-macros
 
 #[derive(Clap, Debug)]
-#[clap(version = option_env!("CARGO_PKG_VERSION").unwrap_or("???"))]
+#[clap(
+	version = option_env!("CARGO_PKG_VERSION").unwrap_or("???"),
+	author = option_env!("CARGO_PKG_AUTHORS").unwrap_or("Lynnesbian"),
+	about = option_env!("CARGO_PKG_DESCRIPTION").unwrap_or("File Info Fixer"),
+	before_help = "Copyright © 2021 Lynnesbian under the GPL3 (or later) License.",
+	before_long_help = "Copyright © 2021 Lynnesbian\n\
+	This program is free software: you can redistribute it and/or modify \
+	it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 \
+	of the License, or (at your option) any later version.",
+	setting(AppSettings::ColoredHelp)
+)]
 pub struct Parameters {
 	/// Only examine files with these extensions (Comma-separated list)
 	#[clap(
@@ -35,7 +47,7 @@ pub struct Parameters {
 	#[clap(short, long)]
 	pub scan_hidden: bool,
 
-	/// Output format to use. See "--help formats" for more information.
+	/// Output format to use
 	#[clap(short, long, default_value = "script", arg_enum)]
 	pub output_format: OutputFormat,
 

src/scan_error.rs

@@ -19,7 +19,7 @@ impl Display for ScanError {
 				Self::Mime(_) => "determine mime type of",
 			},
 			match self {
-				Self::File(f) | Self::Mime(f) => f.to_string_lossy()
+				Self::File(f) | Self::Mime(f) => f.to_string_lossy(),
 			}
 		)
 	}