From bcc97bfaf54b53757c51af3f3d1e4a64d77183fd Mon Sep 17 00:00:00 2001
From: pfthomas <pfthomas@google.com>
Date: Tue, 28 Mar 2023 14:43:43 +0000
Subject: [PATCH] [MaterialDatePicker] Fix hint for Korean

PiperOrigin-RevId: 520025180
---
 .../com/google/android/material/datepicker/UtcDates.java | 5 +++++
 .../google/android/material/datepicker/UtcDatesTest.java | 9 +++++++++
 2 files changed, 14 insertions(+)

diff --git a/lib/java/com/google/android/material/datepicker/UtcDates.java b/lib/java/com/google/android/material/datepicker/UtcDates.java
index 69ad28c1f9a..7f2f344c0e1 100644
--- a/lib/java/com/google/android/material/datepicker/UtcDates.java
+++ b/lib/java/com/google/android/material/datepicker/UtcDates.java
@@ -172,6 +172,11 @@ static String getDefaultTextInputHint(Resources res, SimpleDateFormat format) {
       formatHint = formatHint.replace("y", "yyyy");
     }
 
+    // Remove duplicate year characters for Korean.
+    if (Locale.getDefault().getLanguage().equals(Locale.KOREAN.getLanguage())) {
+      formatHint = formatHint.replaceAll("y+", "y");
+    }
+
     return formatHint.replace("d", dayChar).replace("M", monthChar).replace("y", yearChar);
   }
 
diff --git a/lib/javatests/com/google/android/material/datepicker/UtcDatesTest.java b/lib/javatests/com/google/android/material/datepicker/UtcDatesTest.java
index eaff004859a..cebbbcd34dd 100644
--- a/lib/javatests/com/google/android/material/datepicker/UtcDatesTest.java
+++ b/lib/javatests/com/google/android/material/datepicker/UtcDatesTest.java
@@ -74,4 +74,13 @@ public void textInputHintWith1CharYearLocalized() {
 
     assertEquals("m/j/aaaa", hint);
   }
+
+  @Test
+  @Config(qualifiers = "ko")
+  public void textInputHintForKorean() {
+    SimpleDateFormat sdf = new SimpleDateFormat("yy.M.d.");
+    String hint = UtcDates.getDefaultTextInputHint(context.getResources(), sdf);
+
+    assertEquals("년.월.일.", hint);
+  }
 }