Fix clippy warnings

src/completion.rs

@@ -415,6 +415,7 @@ fn normalize(s: &str) -> Cow<str> {
 
 /// Given a `line` and a cursor `pos`ition,
 /// try to find backward the start of a word.
+///
 /// Return (0, `line[..pos]`) if no break char has been found.
 /// Return the word and its start position (idx, `line[idx..pos]`) otherwise.
 #[must_use]

src/highlight.rs

@@ -5,8 +5,6 @@ use std::borrow::Cow::{self, Borrowed, Owned};
 use std::cell::Cell;
 
 /// Syntax highlighter with [ANSI color](https://en.wikipedia.org/wiki/ANSI_escape_code#SGR_(Select_Graphic_Rendition)_parameters).
-/// Rustyline will try to handle escape sequence for ANSI color on windows
-/// when not supported natively (windows <10).
 ///
 /// Currently, the highlighted version *must* have the same display width as
 /// the original input.

src/validate.rs

@@ -48,10 +48,11 @@ impl<'i> ValidationContext<'i> {
 }
 
 /// This trait provides an extension interface for determining whether
-/// the current input buffer is valid. Rustyline uses the method
-/// provided by this trait to decide whether hitting the enter key
-/// will end the current editing session and return the current line
-/// buffer to the caller of `Editor::readline` or variants.
+/// the current input buffer is valid.
+///
+/// Rustyline uses the method provided by this trait to decide whether hitting
+/// the enter key will end the current editing session and return the current
+/// line buffer to the caller of `Editor::readline` or variants.
 pub trait Validator {
     /// Takes the currently edited `input` and returns a
     /// `ValidationResult` indicating whether it is valid or not along