From 6957930d38b3b785bf040b28277e87ba9e8ebfbe Mon Sep 17 00:00:00 2001
From: Carey Metcalfe <carey@cmetcalfe.ca>
Date: Mon, 2 May 2022 15:44:06 -0400
Subject: [PATCH] Convert os.altsep to '/' in filenames when creating ZipInfo
 objects

This causes the zipfile module to also consider the character defined by
`os.altsep` (if there is one) to be a path separator and convert it to a
forward slash, as defined by the zip specification.
---
 Lib/zipfile/__init__.py                                         | 2 ++
 .../next/Library/2022-05-02-16-21-05.gh-issue-92184.hneGVW.rst  | 2 ++
 2 files changed, 4 insertions(+)
 create mode 100644 Misc/NEWS.d/next/Library/2022-05-02-16-21-05.gh-issue-92184.hneGVW.rst

diff --git a/Lib/zipfile/__init__.py b/Lib/zipfile/__init__.py
index e1833dd1772d56e..83d0149e9a5165f 100644
--- a/Lib/zipfile/__init__.py
+++ b/Lib/zipfile/__init__.py
@@ -376,6 +376,8 @@ def __init__(self, filename="NoName", date_time=(1980,1,1,0,0,0)):
         # ZIP format specification.
         if os.sep != "/" and os.sep in filename:
             filename = filename.replace(os.sep, "/")
+        if os.altsep and os.altsep != "/" and os.altsep in filename:
+            filename = filename.replace(os.altsep, "/")
 
         self.filename = filename        # Normalized file name
         self.date_time = date_time      # year, month, day, hour, min, sec
diff --git a/Misc/NEWS.d/next/Library/2022-05-02-16-21-05.gh-issue-92184.hneGVW.rst b/Misc/NEWS.d/next/Library/2022-05-02-16-21-05.gh-issue-92184.hneGVW.rst
new file mode 100644
index 000000000000000..eda073611ef7f04
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2022-05-02-16-21-05.gh-issue-92184.hneGVW.rst
@@ -0,0 +1,2 @@
+When creating zip files using the ``zipfile`` module, ``os.altsep`` will always
+be treated as a path separator. Patch by Carey Metcalfe.