improvement: Don't use format since it seems to break at some chars

Related to scalameta/metals#7003
tgodzik · Dec 4, 2024 · 0b355e0 · 0b355e0
1 parent 4aa1e0f
commit 0b355e0
Showing 1 changed file with 4 additions and 2 deletions.
diff --git a/...ameta/tokenizers/shared/src/main/scala/scala/meta/internal/tokenizers/LegacyScanner.scala b/...ameta/tokenizers/shared/src/main/scala/scala/meta/internal/tokenizers/LegacyScanner.scala
@@ -233,8 +233,10 @@ class LegacyScanner(input: Input, dialect: Dialect) {
     }
 
     @inline
-    def reportIllegalCharacter(): Unit = curr
-      .setInvalidToken(s"illegal character '\\u${"%04x".format(ch)}'")
+    def reportIllegalCharacter(): Unit = {
+      val output = "\\u" + Integer.toHexString(ch | 0x10000).substring(1);
+      curr.setInvalidToken(s"illegal character '$output'")
+    }
 
     (ch: @switch) match {
       case ' ' =>