Small doc fixes for the command macro

And change to use the shorthand function for moving by n bytes.

command_attr/src/lib.rs

@@ -63,7 +63,7 @@ macro_rules! match_options {
 /// - `#[checks(idents)]`
 /// Preconditions that must be met. Executed before the command's execution.
 /// `idents` is a list of identifiers, seperated by a comma, referencing functions of the declaration:
-/// `fn(&mut Context, &Message, &mut Args, &CommandOptions) -> bool`
+/// `fn(&mut Context, &Message, &mut Args, &CommandOptions) -> serenity::framework::standard::CheckResult`
 ///
 /// - `#[aliases(names)]`
 /// A list of other names that can be used to execute this command.
@@ -72,10 +72,10 @@ macro_rules! match_options {
 /// - `#[description(desc)]`/`#[description = desc]`
 /// A summary of the command.
 ///
-/// - `#[usage(usg)]`/`#[usage = usg]
+/// - `#[usage(usg)]`/`#[usage = usg]`
 /// Usage schema of the command.
 ///
-/// - `#[example(ex)]`/`#[example = ex]
+/// - `#[example(ex)]`/`#[example = ex]`
 /// Example of the command's usage.
 ///
 /// - `#[min_args(min)]`, `#[max_args(max)]`, `#[num_args(min_and_max)]`
@@ -99,7 +99,7 @@ macro_rules! match_options {
 /// - `#[owners_only]`/`#[owners_only(bool)]`
 /// Whether this command is exclusive to owners.
 ///
-/// - `#[owner_privilege]`/`#[owner_privilege]
+/// - `#[owner_privilege]`/`#[owner_privilege]`
 /// Whether this command has a privilege for owners (i.e certain options are ignored for them).
 ///
 /// - `#[sub(commands)]`

src/framework/standard/parse.rs

@@ -58,8 +58,7 @@ pub fn parse_prefix<'a>(
     }
 
     if let Some(prefix) = prefix {
-        let pos = stream.offset();
-        stream.set(pos + prefix.len());
+        stream.increment(prefix.len());
 
         if config.with_whitespace.prefixes {
             stream.take_while(|s| s.is_whitespace());
@@ -128,8 +127,7 @@ impl<'msg, 'groups, 'config> CommandParser<'msg, 'groups, 'config> {
             let equals = self.as_lowercase(n, |n| n == *name && !self.config.disabled_commands.contains(n));
 
             if equals {
-                let pos = self.stream.offset();
-                self.stream.set(pos + n.len());
+                self.stream.increment(n.len());
 
                 if self.config.with_whitespace.commands {
                     self.stream.take_while(|s| s.is_whitespace());
@@ -157,8 +155,7 @@ impl<'msg, 'groups, 'config> CommandParser<'msg, 'groups, 'config> {
             let pp = self.next_text(|| p.chars().count());
 
             if *p == pp {
-                let pos = self.stream.offset();
-                self.stream.set(pos + pp.len());
+                self.stream.increment(pp.len());
 
                 if self.config.with_whitespace.groups {
                     self.stream.take_while(|s| s.is_whitespace());