From 53ea6db72d880c1489ab8ecc398ab8de88c01b35 Mon Sep 17 00:00:00 2001
From: Johannes Altmanninger <aclopte@gmail.com>
Date: Tue, 13 Aug 2024 22:09:06 +0200
Subject: [PATCH] Show un-decodable inputs as bytes instead of the internal
 encoding

When the input is invalid UTF8, we re-encode the raw bytes using the private
use area. Let's make sure we convert back before printing.
---
 src/key.rs | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/key.rs b/src/key.rs
index 115ad0a15..7634f1485 100644
--- a/src/key.rs
+++ b/src/key.rs
@@ -4,7 +4,7 @@ use crate::{
     common::{escape_string, EscapeFlags, EscapeStringStyle},
     fallback::fish_wcwidth,
     reader::TERMINAL_MODE_ON_STARTUP,
-    wchar::prelude::*,
+    wchar::{decode_byte_from_char, prelude::*},
     wutil::{fish_is_pua, fish_wcstoi},
 };
 
@@ -453,6 +453,8 @@ pub fn char_to_symbol(c: char) -> WString {
     } else if c < '\u{80}' {
         // ASCII characters that are not control characters
         ascii_printable_to_symbol(buf, c);
+    } else if let Some(byte) = decode_byte_from_char(c) {
+        sprintf!(=> buf, "\\x%02x", byte);
     } else if ('\u{e000}'..='\u{f8ff}').contains(&c) {
         // Unmapped key from https://sw.kovidgoyal.net/kitty/keyboard-protocol/#functional-key-definitions
         sprintf!(=> buf, "\\u%04X", u32::from(c));