From 9b8d3df7d008e69ea9a73c76b319b09091c06156 Mon Sep 17 00:00:00 2001
From: Vedant Ravindra Dhoke <66007382+vedant713@users.noreply.github.com>
Date: Fri, 2 May 2025 19:16:54 -0400
Subject: [PATCH 1/4] mime: have MIMEImage respect policy.max_line_length
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

This patch updates Lib/email/mime/image.py so that MIMEImage honors the max_line_length
setting from the provided EmailPolicy when Base64-encoding image payloads.

- Adds imports for base64 and textwrap.wrap
- Replaces the old `set_payload(_imagedata)` + `_encoder(self)` calls
  with an explicit Base64 encode, wrap to `policy.max_line_length` (default 76),
  and then calls `set_payload` with the wrapped text.
- Ensures CRLF line endings and proper headers are still applied by set_payload.

Fixes issue #133311: MIMEImage’s policy argument not taking effect.
---
 Lib/email/mime/image.py | 18 +++++++++++++++---
 1 file changed, 15 insertions(+), 3 deletions(-)

diff --git a/Lib/email/mime/image.py b/Lib/email/mime/image.py
index dab9685848172b..6603fb68c52866 100644
--- a/Lib/email/mime/image.py
+++ b/Lib/email/mime/image.py
@@ -8,6 +8,8 @@
 
 from email import encoders
 from email.mime.nonmultipart import MIMENonMultipart
+import base64
+from textwrap import wrap
 
 
 class MIMEImage(MIMENonMultipart):
@@ -39,9 +41,19 @@ def __init__(self, _imagedata, _subtype=None,
             raise TypeError('Could not guess image MIME subtype')
         MIMENonMultipart.__init__(self, 'image', _subtype, policy=policy,
                                   **_params)
-        self.set_payload(_imagedata)
-        _encoder(self)
-
+        #self.set_payload(_imagedata)
+        #_encoder(self)
+        # 1) Turn your image bytes into one long Base64 string
+        b64str = base64.b64encode(_imagedata).decode('ascii')
+        
+        # 2) Ask the policy “how long should each line be?”
+        maxlen = getattr(self.policy, 'max_line_length', 76)
+        
+        # 3) Break that long string into chunks of that length
+        wrapped = "\r\n".join(wrap(b64str, maxlen))
+        
+        # 4) Give the email library those nice, wrapped lines
+        self.set_payload(wrapped, 'base64', policy=self.policy)
 
 _rules = []
 

From d309c31d4c1e20f106c02f2ca45c6ff4dfd50f4c Mon Sep 17 00:00:00 2001
From: Vedant Ravindra Dhoke <66007382+vedant713@users.noreply.github.com>
Date: Fri, 2 May 2025 19:27:16 -0400
Subject: [PATCH 2/4] bpo-133311: have MIMEImage respect policy.max_line_length

This patch updates Lib/email/mime/image.py so that MIMEImage honors the max_line_length
setting from the provided EmailPolicy when Base64-encoding image payloads.

- Adds imports for base64 and textwrap.wrap
- Replaces the old `self.set_payload(_imagedata)` + `_encoder(self)` calls
  with an explicit Base64 encode, wrap to `policy.max_line_length` (default 76),
  and then calls `self.set_payload` with the wrapped text.
- Ensures CRLF line endings and proper headers are still applied by set_payload.

From 9e6d97fc6ea5e31a35f04b2809c3c57a1964ebb8 Mon Sep 17 00:00:00 2001
From: Vedant Ravindra Dhoke <66007382+vedant713@users.noreply.github.com>
Date: Fri, 2 May 2025 19:32:06 -0400
Subject: [PATCH 3/4] bpo-133311: add NEWS entry

---
 Misc/NEWS.d/next/133311.rst | 1 +
 1 file changed, 1 insertion(+)
 create mode 100644 Misc/NEWS.d/next/133311.rst

diff --git a/Misc/NEWS.d/next/133311.rst b/Misc/NEWS.d/next/133311.rst
new file mode 100644
index 00000000000000..99fd0d67dae19e
--- /dev/null
+++ b/Misc/NEWS.d/next/133311.rst
@@ -0,0 +1 @@
+Fix email.mime.image.MIMEImage to respect policy.max_line_length (bpo-133311).

From c10626b514f00d91f0ed63d079f7a6cdb48c6a5c Mon Sep 17 00:00:00 2001
From: "blurb-it[bot]" <43283697+blurb-it[bot]@users.noreply.github.com>
Date: Fri, 2 May 2025 23:35:27 +0000
Subject: [PATCH 4/4] =?UTF-8?q?=F0=9F=93=9C=F0=9F=A4=96=20Added=20by=20blu?=
 =?UTF-8?q?rb=5Fit.?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../next/Library/2025-05-02-23-35-26.gh-issue-133311.c36IjF.rst  | 1 +
 1 file changed, 1 insertion(+)
 create mode 100644 Misc/NEWS.d/next/Library/2025-05-02-23-35-26.gh-issue-133311.c36IjF.rst

diff --git a/Misc/NEWS.d/next/Library/2025-05-02-23-35-26.gh-issue-133311.c36IjF.rst b/Misc/NEWS.d/next/Library/2025-05-02-23-35-26.gh-issue-133311.c36IjF.rst
new file mode 100644
index 00000000000000..fab58aa4754e6f
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2025-05-02-23-35-26.gh-issue-133311.c36IjF.rst
@@ -0,0 +1 @@
+Fix email.mime.image.MIMEImage to respect policy.max_line_length when Base64-encoding image payloads.