Merge remote-tracking branch 'parent/main' into kb_development

app/javascript/mastodon/features/emoji/unicode_to_filename.ts

@@ -0,0 +1,26 @@
+export const unicodeToFilename = (str: string) => {
+  let result = '';
+  let charCode = 0;
+  let p = 0;
+  let i = 0;
+  while (i < str.length) {
+    charCode = str.charCodeAt(i++);
+    if (p) {
+      if (result.length > 0) {
+        result += '-';
+      }
+      result += (0x10000 + ((p - 0xd800) << 10) + (charCode - 0xdc00)).toString(
+        16,
+      );
+      p = 0;
+    } else if (0xd800 <= charCode && charCode <= 0xdbff) {
+      p = charCode;
+    } else {
+      if (result.length > 0) {
+        result += '-';
+      }
+      result += charCode.toString(16);
+    }
+  }
+  return result;
+};