doc,comment: modified documentation comment (#42)

Author: sttk

src/lib.rs

@@ -531,9 +531,9 @@ impl<'b, 'a> Cmd<'a> {
     /// Returns the option argument with the specified name.
     ///
     /// If the option has multiple arguments, this method returns the first argument.
-    ///
-    /// Since the option may not be specified in the command line arguments,
-    /// the return value of this method  is an [Option] of an option argument or [None].
+    /// If the option a boolean flag, this method returns [None].
+    /// If the option is not specified in the command line argument, the return value
+    /// of this method is [None].
     pub fn opt_arg(&'a self, name: &str) -> Option<&'a str> {
         if let Some(opt_vec) = self.opts.get(name) {
             if opt_vec.len() > 0 {
@@ -546,9 +546,9 @@ impl<'b, 'a> Cmd<'a> {
     /// Returns the option arguments with the specified name.
     ///
     /// If the option has one or multiple arguments, this method returns an array of the arguments.
-    ///
-    /// Since the option may not be specified in the command line arguments, the return value of
-    /// this method is an [Option] of option arguments or [None].
+    /// If the option a boolean flag, this method returns an empty vector.
+    /// If the option is not specified in the command line argument, the return value
+    /// of this method is [None].
     pub fn opt_args(&'a self, name: &str) -> Option<&'a [&'a str]> {
         match self.opts.get(name) {
             Some(vec) => Some(&vec),

src/parse/parse_for.rs

@@ -48,8 +48,8 @@ impl<'b> Cmd<'_> {
     /// each option value to a curresponding field of the option store.
     ///
     /// Within this method, a vector of [OptCfg] is made from the fields of the option store.
-    /// This [OptCfg] vector is set to the public field `cfgs` of the [Cmd] instance.
-    /// If you want to access this option configurations, get them from this field.
+    /// This [OptCfg] vector is set into [Cmd] instance.
+    /// If you want to access this option configurations, get them by `opt_cfgs` method.
     ///
     /// An option configuration corresponding to each field of an option store is determined by
     /// its type and `opt` field attribute.