refactor: use crossterm supports_keyboard_enhancement once when KittyProtocolGuard is initialized

Author: Pierre POLLET

src/engine.rs

@@ -240,7 +240,7 @@ impl Reedline {
             buffer_editor: None,
             cursor_shapes: None,
             bracketed_paste: BracketedPasteGuard::default(),
-            kitty_protocol: KittyProtocolGuard::default(),
+            kitty_protocol: KittyProtocolGuard::new(),
             immediately_accept: false,
             #[cfg(feature = "external_printer")]
             external_printer: None,

src/terminal_extensions/kitty.rs

@@ -12,15 +12,23 @@ use crossterm::{event, execute};
 /// * [dte text editor](https://gitlab.com/craigbarnes/dte/-/issues/138)
 ///
 /// Refer to <https://sw.kovidgoyal.net/kitty/keyboard-protocol/> if you're curious.
-#[derive(Default)]
 pub(crate) struct KittyProtocolGuard {
     enabled: bool,
     active: bool,
+    support_kitty_protocol: bool,
 }
 
 impl KittyProtocolGuard {
+    pub fn new() -> Self {
+        Self {
+            support_kitty_protocol: super::kitty_protocol_available(),
+            enabled: false,
+            active: false,
+        }
+    }
+
     pub fn set(&mut self, enable: bool) {
-        self.enabled = enable && super::kitty_protocol_available();
+        self.enabled = enable && self.support_kitty_protocol;
     }
     pub fn enter(&mut self) {
         if self.enabled && !self.active {