From 635983691e771e5e2cb8c1a25e660e09a67d52b3 Mon Sep 17 00:00:00 2001
From: Volker Gronau <volker.gronau@global.ntt>
Date: Thu, 20 Nov 2025 13:38:55 +0100
Subject: [PATCH 1/2] Simpler, smaller and faster implementation of
 String.replace

---
 .../com/google/gwt/emul/java/lang/String.java | 27 +++++--------------
 1 file changed, 6 insertions(+), 21 deletions(-)

diff --git a/user/super/com/google/gwt/emul/java/lang/String.java b/user/super/com/google/gwt/emul/java/lang/String.java
index 67b1cff110..ba58ed0693 100644
--- a/user/super/com/google/gwt/emul/java/lang/String.java
+++ b/user/super/com/google/gwt/emul/java/lang/String.java
@@ -551,31 +551,16 @@ public boolean regionMatches(int toffset, String other, int ooffset, int len) {
   }
 
   public String replace(char from, char to) {
-    // Translate 'from' into unicode escape sequence (\\u and a four-digit hexadecimal number).
-    // Escape sequence replacement is used instead of a string literal replacement
-    // in order to escape regexp special characters (e.g. '.').
-    String hex = Integer.toHexString(from);
-    String regex = "\\u" + "0000".substring(hex.length()) + hex;
-    String replace = NativeString.fromCharCode(to);
-    return nativeReplaceAll(regex, replace);
+    return replace(String.valueOf(from), String.valueOf(to));
   }
 
   public String replace(CharSequence from, CharSequence to) {
-    // Implementation note: This uses a regex replacement instead of
-    // a string literal replacement because Safari does not
-    // follow the spec for "$$" in the replacement string: it
-    // will insert a literal "$$". IE and Firefox, meanwhile,
-    // treat "$$" as "$".
-
-    // Escape regex special characters from literal replacement string.
-    String regex =
-        from.toString().replaceAll("([/\\\\\\.\\*\\+\\?\\|\\(\\)\\[\\]\\{\\}$^])", "\\\\$1");
-    // Escape $ since it is for match backrefs and \ since it is used to escape
-    // $.
-    String replacement = to.toString().replaceAll("\\\\", "\\\\\\\\").replaceAll("\\$", "\\\\$");
-
-    return replaceAll(regex, replacement);
+    return replace(from.toString(), to.toString());
   }
+	
+  public native String replace(String from, String to) /*-{
+    return this.replaceAll(from, function() {return to});
+  }-*/;
 
   /**
    * Regular expressions vary from the standard implementation. The

From d4cf915b754cd3a83ba9fa4407f7a54753e532b9 Mon Sep 17 00:00:00 2001
From: Volker Gronau <volker.gronau@global.ntt>
Date: Thu, 20 Nov 2025 15:21:14 +0100
Subject: [PATCH 2/2] removed lone tab

---
 user/super/com/google/gwt/emul/java/lang/String.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/user/super/com/google/gwt/emul/java/lang/String.java b/user/super/com/google/gwt/emul/java/lang/String.java
index ba58ed0693..1134fa825b 100644
--- a/user/super/com/google/gwt/emul/java/lang/String.java
+++ b/user/super/com/google/gwt/emul/java/lang/String.java
@@ -557,7 +557,7 @@ public String replace(char from, char to) {
   public String replace(CharSequence from, CharSequence to) {
     return replace(from.toString(), to.toString());
   }
-	
+
   public native String replace(String from, String to) /*-{
     return this.replaceAll(from, function() {return to});
   }-*/;