couple of trivial fixes to make clippy a bit more happy (#704)

clippy: fix a few lints

The fixes are:

  * Use single quotes for single-character
  * Use ticks in documentation when necessary.
  * Just bow to clippy's wisdom.

2 files changed, 8 insertions, 7 deletions

diff --git a/src/search_stream.rs b/src/search_stream.rs
index b2b49d24..4e167121 100644
--- a/src/search_stream.rs
+++ b/src/search_stream.rs
@@ -327,16 +327,17 @@ impl<'a, R: io::Read, W: WriteColor> Searcher<'a, R, W> {
 
     #[inline(always)]
     fn fill(&mut self) -> Result<bool, Error> {
-        let mut keep = self.inp.lastnl;
-        if self.opts.before_context > 0 || self.opts.after_context > 0 {
+        let keep = if self.opts.before_context > 0 || self.opts.after_context > 0 {
             let lines = 1 + cmp::max(
                 self.opts.before_context, self.opts.after_context);
-            keep = start_of_previous_lines(
+            start_of_previous_lines(
                 self.opts.eol,
                 &self.inp.buf,
                 self.inp.lastnl.saturating_sub(1),
-                lines);
-        }
+                lines)
+        } else {
+            self.inp.lastnl
+        };
         if keep < self.last_printed {
             self.last_printed -= keep;
         } else {
diff --git a/src/unescape.rs b/src/unescape.rs
index 5d7a50e8..c27e6e28 100644
--- a/src/unescape.rs
+++ b/src/unescape.rs
@@ -14,8 +14,8 @@ enum State {
 /// Unescapes a string given on the command line. It supports a limited set of
 /// escape sequences:
 ///
-/// * \t, \r and \n are mapped to their corresponding ASCII bytes.
-/// * \xZZ hexadecimal escapes are mapped to their byte.
+/// * `\t`, `\r` and `\n` are mapped to their corresponding ASCII bytes.
+/// * `\xZZ` hexadecimal escapes are mapped to their byte.
 pub fn unescape(s: &str) -> Vec<u8> {
     use self::State::*;