From c0f509d7809b3afc9e047a1badc0c59020462576 Mon Sep 17 00:00:00 2001
From: Tagir Valeev <tagir.valeev@jetbrains.com>
Date: Wed, 26 Oct 2022 18:15:48 +0200
Subject: [PATCH] [java-inspections] EscapedSpaceInspection: proper unicode
 escape support

GitOrigin-RevId: 4595d28c6b09fa8ab5e1afe63cc34f95c5a17a86
---
 .../codeInspection/escapedSpace/afterWithUnicode.java     | 8 ++++++++
 .../codeInspection/escapedSpace/beforeWithUnicode.java    | 8 ++++++++
 .../src/com/siyeh/ig/style/EscapedSpaceInspection.java    | 6 ++++--
 3 files changed, 20 insertions(+), 2 deletions(-)
 create mode 100644 java/java-tests/testData/codeInspection/escapedSpace/afterWithUnicode.java
 create mode 100644 java/java-tests/testData/codeInspection/escapedSpace/beforeWithUnicode.java

diff --git a/java/java-tests/testData/codeInspection/escapedSpace/afterWithUnicode.java b/java/java-tests/testData/codeInspection/escapedSpace/afterWithUnicode.java
new file mode 100644
index 000000000000..22310378e7e8
--- /dev/null
+++ b/java/java-tests/testData/codeInspection/escapedSpace/afterWithUnicode.java
@@ -0,0 +1,8 @@
+// "Replace '\s' sequences with spaces" "true-preview"
+class X {
+  void test(String str) {
+    if (str.matches("\uuu1234 +")) {
+
+    }
+  }
+}
\ No newline at end of file
diff --git a/java/java-tests/testData/codeInspection/escapedSpace/beforeWithUnicode.java b/java/java-tests/testData/codeInspection/escapedSpace/beforeWithUnicode.java
new file mode 100644
index 000000000000..d7903a922b9e
--- /dev/null
+++ b/java/java-tests/testData/codeInspection/escapedSpace/beforeWithUnicode.java
@@ -0,0 +1,8 @@
+// "Replace '\s' sequences with spaces" "true-preview"
+class X {
+  void test(String str) {
+    if (str.matches("\uuu1234<caret>\s+")) {
+
+    }
+  }
+}
\ No newline at end of file
diff --git a/plugins/InspectionGadgets/InspectionGadgetsAnalysis/src/com/siyeh/ig/style/EscapedSpaceInspection.java b/plugins/InspectionGadgets/InspectionGadgetsAnalysis/src/com/siyeh/ig/style/EscapedSpaceInspection.java
index 1fed920a47e9..6820b3da991e 100644
--- a/plugins/InspectionGadgets/InspectionGadgetsAnalysis/src/com/siyeh/ig/style/EscapedSpaceInspection.java
+++ b/plugins/InspectionGadgets/InspectionGadgetsAnalysis/src/com/siyeh/ig/style/EscapedSpaceInspection.java
@@ -42,8 +42,10 @@ public class EscapedSpaceInspection extends AbstractBaseJavaLocalInspectionTool
       if (pos == -1 || pos == text.length() - 1) break;
       char next = text.charAt(pos + 1);
       if (next == 'u') {
-        // unicode escape
-        pos += 6;
+        // unicode escape can contain several 'u', according to the spec
+        pos += 2;
+        while (pos < text.length() && text.charAt(pos) == 'u') pos++;
+        pos += 4;
         continue;
       }
       pos += 2;