Update help message

Cargo.toml

@@ -1,11 +1,11 @@
 [package]
 name = "fd"
-version = "0.1.0"
+version = "0.2.0"
 authors = ["David Peter <[email protected]>"]
 
 [dependencies]
+ansi_term = "0.9"
 getopts = "0.2"
+isatty = "0.1"
 regex = "0.2"
 walkdir = "1"
-ansi_term = "0.9"
-isatty = "0.1"

src/main.rs

@@ -26,6 +26,8 @@ struct FdOptions {
  max_depth: usize
 }
 
+const MAX_DEPTH_DEFAULT : usize = 25;
+
 /// Print a search result to the console.
 fn print_entry(entry: &DirEntry, path_rel: &Path, config: &FdOptions) {
  let path_str = match path_rel.to_str() {
@@ -104,16 +106,17 @@ fn main() {
  opts.optflag("", "hidden",
  "search hidden files/directories (default: off)");
  opts.optflag("F", "follow", "follow symlinks (default: off)");
- opts.optflag("n", "no-color", "do not colorize output");
- opts.optopt("d", "max-depth", "maximum search depth", "DEPTH");
+ opts.optflag("n", "no-color", "do not colorize output (default: on)");
+ opts.optopt("d", "max-depth",
+ "maximum search depth (default: 25)", "D");
 
  let matches = match opts.parse(&args[1..]) {
  Ok(m) => m,
  Err(e) => error(e.description())
  };
 
  if matches.opt_present("h") {
- let brief = "Usage: fd [PATTERN]";
+ let brief = "Usage: fd [options] [PATTERN]";
  print!("{}", opts.usage(&brief));
  process::exit(1);
  }
@@ -141,7 +144,7 @@ fn main() {
  max_depth:
  matches.opt_str("max-depth")
  .and_then(|ds| usize::from_str_radix(&ds, 10).ok())
- .unwrap_or(25)
+ .unwrap_or(MAX_DEPTH_DEFAULT)
  };
 
  match RegexBuilder::new(pattern)