Merge pull request #9 from Edmund-a7/master

fix: support IME input for Chinese and other UTF-8 characters

src/input/encode.rs

@@ -309,19 +309,31 @@ fn kitty_modifier(mods: KeyModifiers) -> u32 {
 }
 
 fn encode_text_input(key: &TerminalKey) -> Option<Vec<u8>> {
+    let ch = match key.code {
+        KeyCode::Char(ch) => ch,
+        _ => return None,
+    };
+
+    if key.modifiers.is_empty() {
+        match key.kind {
+            crossterm::event::KeyEventKind::Press | crossterm::event::KeyEventKind::Repeat => {
+                let mut buf = [0u8; 4];
+                return Some(ch.encode_utf8(&mut buf).as_bytes().to_vec());
+            }
+            crossterm::event::KeyEventKind::Release => return Some(Vec::new()),
+        }
+    }
+
     if key.modifiers != KeyModifiers::SHIFT {
         return None;
     }
 
-    let ch = match key.code {
-        KeyCode::Char(ch) => shifted_text_char(key, ch)?,
-        _ => return None,
-    };
+    let shifted_ch = shifted_text_char(key, ch)?;
 
     match key.kind {
         crossterm::event::KeyEventKind::Press | crossterm::event::KeyEventKind::Repeat => {
             let mut buf = [0u8; 4];
-            Some(ch.encode_utf8(&mut buf).as_bytes().to_vec())
+            Some(shifted_ch.encode_utf8(&mut buf).as_bytes().to_vec())
         }
         crossterm::event::KeyEventKind::Release => Some(Vec::new()),
     }

src/input/tests.rs

@@ -720,3 +720,25 @@ fn protocol_from_nonzero_flags_is_kitty() {
         KeyboardProtocol::Kitty { flags: 7 }
     );
 }
+
+#[test]
+fn chinese_char_encodes_as_utf8() {
+    let key = TerminalKey::new(KeyCode::Char('中'), KeyModifiers::empty());
+    let encoded = encode_terminal_key(key, KeyboardProtocol::Legacy);
+    assert_eq!(encoded, "中".as_bytes());
+}
+
+#[test]
+fn chinese_char_with_kitty_protocol_encodes_as_utf8() {
+    let key = TerminalKey::new(KeyCode::Char('文'), KeyModifiers::empty());
+    let encoded = encode_terminal_key(key, KeyboardProtocol::Kitty { flags: 7 });
+    assert_eq!(encoded, "文".as_bytes());
+}
+
+#[test]
+fn chinese_char_with_modifiers_falls_back_to_kitty_encoding() {
+    let key = TerminalKey::new(KeyCode::Char('测'), KeyModifiers::ALT);
+    let encoded = encode_terminal_key(key, KeyboardProtocol::Kitty { flags: 7 });
+    assert!(!encoded.is_empty());
+    assert_ne!(encoded, "测".as_bytes());
+}

src/main.rs

@@ -341,7 +341,6 @@ fn main() -> io::Result<()> {
                 KeyboardEnhancementFlags::DISAMBIGUATE_ESCAPE_CODES
                     | KeyboardEnhancementFlags::REPORT_EVENT_TYPES
                     | KeyboardEnhancementFlags::REPORT_ALTERNATE_KEYS
-                    | KeyboardEnhancementFlags::REPORT_ALL_KEYS_AS_ESCAPE_CODES
             )
         )?;