From: Serhiy Storchaka <storchaka@gmail.com>
Date: Fri, 5 Jun 2026 07:58:20 +0000 (+0300)
Subject: gh-62825: Fix encoding aliases "KS_C_5601-1987", "KS X 1001", etc (GH-150933)
X-Git-Url: http://git.ipfire.org/gitweb/index.cgi?a=commitdiff_plain;h=45562c6f4f469e278a9c03c31c2cdadf8100d101;p=thirdparty%2FPython%2Fcpython.git

gh-62825: Fix encoding aliases "KS_C_5601-1987", "KS X 1001", etc (GH-150933)

They are now aliases of CP949 instead of EUC-KR.
---

diff --git a/Lib/encodings/aliases.py b/Lib/encodings/aliases.py
index e5e50630f33d..df4c230fbf9c 100644
--- a/Lib/encodings/aliases.py
+++ b/Lib/encodings/aliases.py
@@ -226,6 +226,12 @@ aliases = {
 
     # cp949 codec
     '949'                : 'cp949',
+    'korean'             : 'cp949',
+    'ksc5601'            : 'cp949',
+    'ks_c_5601'          : 'cp949',
+    'ks_c_5601_1987'     : 'cp949',
+    'ksx1001'            : 'cp949',
+    'ks_x_1001'          : 'cp949',
     'ms949'              : 'cp949',
     'uhc'                : 'cp949',
 
@@ -248,12 +254,6 @@ aliases = {
 
     # euc_kr codec
     'euckr'              : 'euc_kr',
-    'korean'             : 'euc_kr',
-    'ksc5601'            : 'euc_kr',
-    'ks_c_5601'          : 'euc_kr',
-    'ks_c_5601_1987'     : 'euc_kr',
-    'ksx1001'            : 'euc_kr',
-    'ks_x_1001'          : 'euc_kr',
     'cseuckr'            : 'euc_kr',
 
     # gb18030 codec
diff --git a/Misc/NEWS.d/next/Library/2026-06-04-23-10-31.gh-issue-62825.BtG_yQ.rst b/Misc/NEWS.d/next/Library/2026-06-04-23-10-31.gh-issue-62825.BtG_yQ.rst
new file mode 100644
index 000000000000..95a4fb1c61d4
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2026-06-04-23-10-31.gh-issue-62825.BtG_yQ.rst
@@ -0,0 +1,2 @@
+Encodings "KS_C_5601-1987", "KS X 1001", etc are now aliases of "CP949"
+instead of "EUC-KR".