From 0a5df68534e48ca59669a2b5de03c771bbcc19a0 Mon Sep 17 00:00:00 2001
From: Aaron Liang <76561968+AaronL725@users.noreply.github.com>
Date: Tue, 14 Jul 2026 19:12:12 +0800
Subject: [PATCH] fix: escape generated Cloud Mail newline before retry

---
 .github/workflows/temp-cloudmail-upgrade.yml | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/.github/workflows/temp-cloudmail-upgrade.yml b/.github/workflows/temp-cloudmail-upgrade.yml
index f3715d4..60d7e5c 100644
--- a/.github/workflows/temp-cloudmail-upgrade.yml
+++ b/.github/workflows/temp-cloudmail-upgrade.yml
@@ -21,6 +21,22 @@ jobs:
           ref: main
           fetch-depth: 0
 
+      - name: Fix Cloud Mail patch generator escaping
+        shell: bash
+        run: |
+          python <<'PY'
+          from pathlib import Path
+
+          path = Path("tools/apply_cloudmail_upgrade.py")
+          text = path.read_text(encoding="utf-8")
+          old = '            combined = "\\n".join(parts)'
+          new = '            combined = "\\\\n".join(parts)'
+          count = text.count(old)
+          if count != 1:
+              raise RuntimeError(f"newline escape fix: expected exactly one match, found {count}")
+          path.write_text(text.replace(old, new, 1), encoding="utf-8")
+          PY
+
       - name: Apply Cloud Mail provider patch
         run: python tools/apply_cloudmail_upgrade.py