fix: general bug fixes

scripts/patch-xterm-android-ime.cjs

@@ -14,6 +14,17 @@ const xtermDir = path.join(
 // xtermjs/xterm.js#3600 remains unresolved upstream. Android IMEs can restart
 // composition on the previous word and replace it with a shorter value (for
 // example, Vietnamese "Hoar" -> "Hỏa"). xterm 6.0 otherwise emits nothing.
+//
+// Also fixes _handleAnyTextareaChanges, which iOS Safari/WKWebView drives
+// for ordinary typing (it reports keyCode 229 for all software-keyboard
+// input, not just IME composition). That handler diffs the textarea value
+// via `newValue.replace(oldValue, "")`, a literal substring removal. When
+// keystrokes arrive faster than the function's setTimeout(0) callback runs,
+// several overlapping callbacks each capture a stale oldValue, so the
+// literal-substring search fails to match and the diff silently comes back
+// empty - characters are dropped instead of sent. Swap in the same
+// common-prefix diff used for composition-end above so a stale oldValue
+// still yields the correct delta.
 const patches = [
   {
     file: "xterm.mjs",
@@ -34,6 +45,10 @@ const patches = [
         "e.start+=this._dataAlreadySent.length,this._isComposing?i=this._textarea.value.substring(e.start,this._compositionPosition.start):i=this._textarea.value.substring(e.start),i.length>0&&",
         "e.start+=this._dataAlreadySent.length;if(this._isComposing)i=this._textarea.value.substring(e.start,this._compositionPosition.start);else{const t=this._textarea.value;if(t.length<s.length){let e=0;const r=Math.min(t.length,s.length);for(;e<r&&t.charCodeAt(e)===s.charCodeAt(e);)e++;i=b.DEL.repeat(s.length-e)+t.substring(e)}else i=t.substring(e.start)}i.length>0&&",
       ],
+      [
+        '_handleAnyTextareaChanges(){let t=this._textarea.value;setTimeout(()=>{if(!this._isComposing){let e=this._textarea.value,i=e.replace(t,"");this._dataAlreadySent=i,e.length>t.length?this._coreService.triggerDataEvent(i,!0):e.length<t.length?this._coreService.triggerDataEvent(`${b.DEL}`,!0):e.length===t.length&&e!==t&&this._coreService.triggerDataEvent(e,!0)}},0)}',
+        '_handleAnyTextareaChanges(){let t=this._textarea.value;setTimeout(()=>{if(!this._isComposing){let e=this._textarea.value,r=0;const n=Math.min(e.length,t.length);for(;r<n&&e.charCodeAt(r)===t.charCodeAt(r);)r++;let i=e.length<t.length?b.DEL.repeat(t.length-r)+e.substring(r):e.substring(r);this._dataAlreadySent=i,i.length>0&&this._coreService.triggerDataEvent(i,!0)}},0)}',
+      ],
     ],
   },
   {
@@ -55,6 +70,10 @@ const patches = [
         "e.start+=this._dataAlreadySent.length,t=this._isComposing?this._textarea.value.substring(e.start,this._compositionPosition.start):this._textarea.value.substring(e.start),t.length>0&&",
         "e.start+=this._dataAlreadySent.length;this._isComposing?t=this._textarea.value.substring(e.start,this._compositionPosition.start):(()=>{const s=this._textarea.value;if(s.length<i.length){let e=0;const r=Math.min(s.length,i.length);for(;e<r&&s.charCodeAt(e)===i.charCodeAt(e);)e++;t=a.C0.DEL.repeat(i.length-e)+s.substring(e)}else t=s.substring(e.start)})(),t.length>0&&",
       ],
+      [
+        '_handleAnyTextareaChanges(){const e=this._textarea.value;setTimeout((()=>{if(!this._isComposing){const t=this._textarea.value,i=t.replace(e,"");this._dataAlreadySent=i,t.length>e.length?this._coreService.triggerDataEvent(i,!0):t.length<e.length?this._coreService.triggerDataEvent(`${a.C0.DEL}`,!0):t.length===e.length&&t!==e&&this._coreService.triggerDataEvent(t,!0)}}),0)}',
+        '_handleAnyTextareaChanges(){const e=this._textarea.value;setTimeout((()=>{if(!this._isComposing){const t=this._textarea.value;let r=0;const n=Math.min(t.length,e.length);for(;r<n&&t.charCodeAt(r)===e.charCodeAt(r);)r++;const i=t.length<e.length?a.C0.DEL.repeat(e.length-r)+t.substring(r):t.substring(r);this._dataAlreadySent=i,i.length>0&&this._coreService.triggerDataEvent(i,!0)}}),0)}',
+      ],
     ],
   },
 ];
@@ -66,18 +85,24 @@ for (const { file, replacements } of patches) {
   }
 
   let source = fs.readFileSync(filePath, "utf8");
-  if (source.includes("_preCompositionValue")) {
-    console.log(`[patch-xterm-android-ime] ${file} already patched`);
-    continue;
-  }
+  let changed = false;
 
   for (const [original, patched] of replacements) {
+    if (source.includes(patched)) {
+      continue;
+    }
     if (!source.includes(original)) {
       throw new Error(
         `[patch-xterm-android-ime] Expected source not found in ${file}`,
       );
     }
     source = source.replace(original, patched);
+    changed = true;
+  }
+
+  if (!changed) {
+    console.log(`[patch-xterm-android-ime] ${file} already patched`);
+    continue;
   }
 
   fs.writeFileSync(filePath, source);