Update rustyline to v9

Also refresh line always. This isn't a big deal for the small
expressions we have here and also fixes a few annoying issues
I had with the highlighter.

1 files changed, 6 insertions, 1 deletions

diff --git a/src/readline.rs b/src/readline.rs
index 2939ee1..f59cd22 100644
--- a/src/readline.rs
+++ b/src/readline.rs
@@ -7,6 +7,7 @@ use rustyline::error::ReadlineError;
 use rustyline::highlight::Highlighter;
 use rustyline::hint::{Hinter, HistoryHinter};
 use rustyline::{Context, Editor, Helper};
+use rustyline::validate::Validator;
 
 use directories::ProjectDirs;
 
@@ -75,6 +76,7 @@ impl Highlighter for LineHighlighter {
 }
 
 impl Highlighter for RLHelper {
+    fn highlight_char(&self, _: &str, _: usize) -> bool { true }
     fn highlight_hint<'h>(&self, hint: &'h str) -> Cow<'h, str> {
         self.highlighter.highlight_hint(hint)
     }
@@ -96,11 +98,14 @@ impl Completer for RLHelper {
 }
 
 impl Hinter for RLHelper {
-    fn hint(&self, line: &str, a: usize, b: &Context) -> Option<String> {
+    type Hint = String;
+    fn hint(&self, line: &str, a: usize, b: &Context) -> Option<Self::Hint> {
         self.hinter.hint(line, a, b)
     }
 }
 
+impl Validator for RLHelper {}
+
 impl Helper for RLHelper {}
 
 pub fn create_readline() -> Editor<RLHelper> {