Merge pull request #147 from QuarticCat/master

Beautify help messages

Cargo.toml

@@ -14,33 +14,32 @@ categories = ["command-line-utilities"]
 license = "Apache-2.0"
 
 [badges]
-travis-ci = {repository = "https://travis-ci.org/bootandy/dust"}
+travis-ci = { repository = "https://travis-ci.org/bootandy/dust" }
 
 [[bin]]
 name = "dust"
 path = "src/main.rs"
 
 [dependencies]
 ansi_term = "0.12"
-clap = "=2.33"
+clap = { version = "=2.33", features = ["wrap_help"] }
 lscolors = "0.7"
 num_cpus = "1"
 terminal_size = "0.1"
 unicode-width = "0.1"
-ignore="0.4"
+ignore = "0.4"
 crossbeam-channel = "0.5"
-walkdir="2.3"
+walkdir = "2.3"
 thousands = "0.2"
 stfu8 = "0.2"
 
 [target.'cfg(windows)'.dependencies]
 winapi-util = "0.1"
 
 [dev-dependencies]
-assert_cmd ="1"
+assert_cmd = "1"
 tempfile = "=3"
 
-
 [[test]]
 name = "integration"
 path = "tests/tests.rs"

src/main.rs

@@ -75,7 +75,8 @@ fn main() {
                 .short("d")
                 .long("depth")
                 .help("Depth to show")
-                .takes_value(true),
+                .takes_value(true)
+                .conflicts_with("number_of_lines"),
         )
         .arg(
             Arg::with_name("number_of_lines")
@@ -150,7 +151,6 @@ fn main() {
                 .number_of_values(1)
                 .help("Specify width of output overriding the auto detection of terminal width"),
         )
-
         .arg(Arg::with_name("inputs").multiple(true))
         .get_matches();
 
@@ -181,10 +181,6 @@ fn main() {
             .map_err(|_| eprintln!("Ignoring bad value for depth"))
             .ok()
     });
-    if options.is_present("depth") && number_of_lines != default_height {
-        eprintln!("Use either -n or -d. Not both");
-        return;
-    }
 
     let no_colors = init_color(options.is_present("no_colors"));
     let use_apparent_size = options.is_present("display_apparent_size");