From 2f867c28b4d16bbdab2ea70c68a7318f6ec670c9 Mon Sep 17 00:00:00 2001
From: Brandon Nguyen <112731698+bxngyn@users.noreply.github.com>
Date: Tue, 5 Aug 2025 15:50:44 -0400
Subject: [PATCH 01/11] vietnamese support

---
 submit50/locale/vi/LC_MESSAGES/submit50.po | 113 +++++++++++++++++++++
 1 file changed, 113 insertions(+)
 create mode 100644 submit50/locale/vi/LC_MESSAGES/submit50.po

diff --git a/submit50/locale/vi/LC_MESSAGES/submit50.po b/submit50/locale/vi/LC_MESSAGES/submit50.po
new file mode 100644
index 0000000..53c910a
--- /dev/null
+++ b/submit50/locale/vi/LC_MESSAGES/submit50.po
@@ -0,0 +1,113 @@
+# Vietnamese translations for submit50.
+# Copyright (C) 2025 ORGANIZATION
+# This file is distributed under the same license as the submit50 project.
+# FIRST AUTHOR <EMAIL@ADDRESS>, 2025.
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: submit50 3.2.1\n"
+"Report-Msgid-Bugs-To: EMAIL@ADDRESS\n"
+"POT-Creation-Date: 2025-08-05 13:04-0400\n"
+"PO-Revision-Date: 2025-08-05 13:06-0400\n"
+"Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
+"Language: vi\n"
+"Language-Team: vi <LL@li.org>\n"
+"Plural-Forms: nplurals=1; plural=0;\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=utf-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"Generated-By: Babel 2.17.0\n"
+
+#: submit50/__main__.py:71
+msgid ""
+"Could not connect to submit.cs50.io.Please visit our status page "
+"https://cs50.statuspage.io for more information."
+msgstr ""
+"Không kết nối đến submit.cs50.io được. Vui lòng xem "
+"https://cs50.statuspage.io để biết thêm thông tin."
+
+#: submit50/__main__.py:135
+msgid "Files that will be submitted:"
+msgstr "Các tập tin sẽ nộp:"
+
+#: submit50/__main__.py:139
+msgid "No files in this directory are expected for submission."
+msgstr "Không có tập tin nào trong thư mục này để nộp."
+
+#: submit50/__main__.py:143
+msgid "Files that won't be submitted:"
+msgstr "Các tập tin sẽ không nộp:"
+
+#: submit50/__main__.py:156
+msgid ""
+"Keeping in mind the course's policy on academic honesty, including its "
+"restrictions on AI use, are you sure you want to submit these files "
+"(yes/no)? "
+msgstr ""
+"Cân nhắc quy định về tính trung thực trong học thuật, bao gồm cả "
+"các hạn chế về việc sử dụng AI, bạn có chắc chắn muốn nộp các tập tin này không?"
+"(có/không)? "
+
+#: submit50/__main__.py:174 submit50/__main__.py:194
+msgid "y|yes"
+msgstr "c|có"
+
+#: submit50/__main__.py:189
+msgid ""
+"You are submitting to a previous year's CS50x course. Your submission "
+"will not be counted towards this year's course."
+msgstr ""
+"Bạn đang nộp bài cho khóa học CS50x của năm trước."
+"Bài này sẽ không được tính vào khóa học năm nay."
+
+#: submit50/__main__.py:190
+msgid ""
+"If you are looking to submit to this year's course, please use the "
+"following slug:"
+msgstr ""
+"Nếu bạn muốn nộp bài cho khóa học năm nay, vui lòng sử dụng slug này: "
+
+#: submit50/__main__.py:194
+msgid "Do you want to continue with this submission (yes/no)? "
+msgstr "Bạn có muốn tiếp tục nộp bài này không (có/không)?"
+
+#: submit50/__main__.py:195
+msgid "User aborted submission."
+msgstr "Việc nộp bài bị hủy bỏ."
+
+#: submit50/__main__.py:207
+msgid ""
+"Sorry, something's wrong, please try again. If the problem persists, "
+"please visit our status page https://cs50.statuspage.io for more "
+"information."
+msgstr ""
+"Rất tiếc, có gì xảy ra, vui lòng thử nộp lại. Nếu vấn đề này còn tiếp nữa, "
+"vui lòng xem https://cs50.statuspage.io để biết thêm thông tin."
+
+#: submit50/__main__.py:212
+msgid "Submission cancelled."
+msgstr "Việc nộp bài bị hủy bỏ"
+
+#: submit50/__main__.py:218
+msgid "logout of submit50"
+msgstr "đăng xuất khỏi submit50"
+
+#: submit50/__main__.py:225
+msgid "failed to logout"
+msgstr "không đăng xuất được"
+
+#: submit50/__main__.py:227
+msgid "logged out successfully"
+msgstr "đăng xuất thành công"
+
+#: submit50/__main__.py:242
+msgid ""
+"warning: displays usage warnings.\n"
+"info: adds all commands run.\n"
+"debug: adds the output of all commands run."
+msgstr ""
+
+#: submit50/__main__.py:253
+msgid "prescribed identifier of work to submit"
+msgstr ""
+

From b2ebb8c77e4af730917aad80e8768f9e4b20a019 Mon Sep 17 00:00:00 2001
From: ivanharvard <144486839+ivanharvard@users.noreply.github.com>
Date: Wed, 6 Aug 2025 17:08:33 -0400
Subject: [PATCH 02/11] add authentication flag and debug support

---
 submit50/__main__.py | 32 +++++++++++++++++++++++++++++---
 1 file changed, 29 insertions(+), 3 deletions(-)

diff --git a/submit50/__main__.py b/submit50/__main__.py
index 0a3a72e..63eb148 100755
--- a/submit50/__main__.py
+++ b/submit50/__main__.py
@@ -23,6 +23,8 @@
 # Internationalization
 gettext.install("submit50", str(files("submit50").joinpath("locale")))
 
+LOGGER = logging.getLogger("submit50")
+
 SUBMIT_URL = "https://submit.cs50.io"
 
 class LogLevel(enum.IntEnum):
@@ -193,7 +195,7 @@ def check_slug_year(slug):
             # Ask if they want to continue
             if not re.match(f"^\s*(?:{_('y|yes')})\s*$", input(_("Do you want to continue with this submission (yes/no)? ")), re.I):
                 raise Error(_("User aborted submission."))
-            
+
     except ValueError:
         pass
 
@@ -243,6 +245,12 @@ def main():
                 '\ninfo: adds all commands run.'
                 '\ndebug: adds the output of all commands run.')
     )
+    parser.add_argument("--https",
+                        action="store_true",
+                        help=_("force authentication via HTTPS"))
+    parser.add_argument("--ssh",
+                        action="store_true",
+                        help=_("force authentication via SSH"))
     parser.add_argument(
         "-V", "--version",
         action="version",
@@ -260,8 +268,26 @@ def main():
     check_announcements()
     check_version()
     check_slug_year(args.slug)
-    
-    user_name, commit_hash, message = lib50.push("submit50", args.slug, CONFIG_LOADER, prompt=prompt)
+
+    # Decide whether to force HTTPS or SSH authentication
+    if args.https and args.ssh:
+        LOGGER.warning(_("--https and --ssh have no effect when used together"))
+        auth_method = None
+    elif args.https:
+        auth_method = "https"
+    elif args.ssh:
+        auth_method = "ssh"
+    else:
+        auth_method = None
+
+    try:
+        user_name, commit_hash, message = lib50.push("submit50", args.slug, CONFIG_LOADER, prompt=prompt, auth_method=auth_method)
+    except lib50.ConnectionError:
+        LOGGER.debug(traceback.format_exc()) # log the traceback
+        raise Error(_(
+            "check50 failed to authenticate your Github account. Try running check50 again with --https or --ssh, "
+            "or try restarting your codespace. If the problem persists, please email us at sysadmins@cs50.harvard.edu."
+        ))
     print(message)
 
 if __name__ == "__main__":

From e836ff17044e0676062e5b6dfb97c6dff5c30ae7 Mon Sep 17 00:00:00 2001
From: Rongxin Liu <rongxinliu.dev@gmail.com>
Date: Thu, 7 Aug 2025 00:02:48 -0400
Subject: [PATCH 03/11] improve error handling for GitHub authentication
 failures in codespaces

---
 submit50/__main__.py | 16 ++++++++++------
 1 file changed, 10 insertions(+), 6 deletions(-)

diff --git a/submit50/__main__.py b/submit50/__main__.py
index 63eb148..b000684 100755
--- a/submit50/__main__.py
+++ b/submit50/__main__.py
@@ -195,7 +195,7 @@ def check_slug_year(slug):
             # Ask if they want to continue
             if not re.match(f"^\s*(?:{_('y|yes')})\s*$", input(_("Do you want to continue with this submission (yes/no)? ")), re.I):
                 raise Error(_("User aborted submission."))
-
+            
     except ValueError:
         pass
 
@@ -283,11 +283,15 @@ def main():
     try:
         user_name, commit_hash, message = lib50.push("submit50", args.slug, CONFIG_LOADER, prompt=prompt, auth_method=auth_method)
     except lib50.ConnectionError:
-        LOGGER.debug(traceback.format_exc()) # log the traceback
-        raise Error(_(
-            "check50 failed to authenticate your Github account. Try running check50 again with --https or --ssh, "
-            "or try restarting your codespace. If the problem persists, please email us at sysadmins@cs50.harvard.edu."
-        ))
+        LOGGER.debug(traceback.format_exc())
+        if not os.environ.get("CODESPACES"):
+            raise Error(_(
+                "submit50 failed to authenticate your Github account. Please make sure you are connected to the internet and try again."
+            ))
+    except Exception as e:
+        LOGGER.debug(traceback.format_exc())
+        raise Error(_("Sorry, something's wrong, please try again.\n"
+                                    "If the problem persists, please visit our status page https://cs50.statuspage.io for more information.")) from e
     print(message)
 
 if __name__ == "__main__":

From 6ee8c4bfbdea03683ce4923c7b6655b186754f0f Mon Sep 17 00:00:00 2001
From: Rongxin Liu <rongxinliu.dev@gmail.com>
Date: Thu, 7 Aug 2025 00:08:19 -0400
Subject: [PATCH 04/11] bump version to 3.2.2

---
 setup.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/setup.py b/setup.py
index 57eaec9..35bbcd8 100755
--- a/setup.py
+++ b/setup.py
@@ -26,6 +26,6 @@
     entry_points={
         "console_scripts": ["submit50=submit50.__main__:main"]
     },
-    version="3.2.1",
+    version="3.2.2",
     include_package_data=True
 )

From f4ee8f0e4513ed425e3c97f53afb37afe6793ba7 Mon Sep 17 00:00:00 2001
From: Brandon Nguyen <112731698+bxngyn@users.noreply.github.com>
Date: Thu, 7 Aug 2025 10:02:49 -0400
Subject: [PATCH 05/11] add compiled file

---
 submit50/locale/vi/LC_MESSAGES/submit50.mo | Bin 0 -> 2651 bytes
 1 file changed, 0 insertions(+), 0 deletions(-)
 create mode 100644 submit50/locale/vi/LC_MESSAGES/submit50.mo

diff --git a/submit50/locale/vi/LC_MESSAGES/submit50.mo b/submit50/locale/vi/LC_MESSAGES/submit50.mo
new file mode 100644
index 0000000000000000000000000000000000000000..f6b45096fed5ba24f3a468c9bf821fffb2309035
GIT binary patch
literal 2651
zcmb_dU29xL7#_8L?UfWnkyc&>X$v_go3ydv^fO<T&`k|VTB+d0?Ah7fF=uDCXXb3O
zQo&NNh)9XzMNu$qDS{YVtrwC-da<G2=|2$mqIl(B5T7|`ce5!)FLYsf&dhn|{dnHz
zo%8$dU7s`jp2L3+{$IMqz;DlEj9tKbFYqw%DsV6G7vRgl2fzj3uE!a3j@|+~yFY=S
z0$+QAvFCw50bd0E3QT~10A0*?b}{w>Pyu%XKLkDryav1i-(LaW!+PISj7<V>0AB(=
z0KNibPcwEN@G9^(;6>n3VBs0Yz5{*)bavy<!Up&@@B`rcKv&0KK<95yE?XZ4y7*^-
zY)U6liIlb!YNbSI$!ao5u_mn_nz6huwLc#TZUi-?k(P84ld;?;hU&Z`sA_H91jECr
zarVOP;~bTBOf?+~k_wMCZlzW}o7U9S39WFI#zI&tRU&9b+A7(qG+B6KU`_j*!VD{Y
z-~_Q#G7<&`+`=@9s3^L5T2Tsiywz%-edzUUIStB@Or-U)RF&;I-BTL3DR{ikfQTeE
zVu<Ql*$GOwRe@@vNUyk)CQ2#+J1s=rt)!xwRHf7=I|?6l9m%jssDOvOBx*9Gs#e0-
z<`52qQBq2eT0=25V;MSbjI*DZB}5z|m#X8*B;AJ|VOeurI3!k1Nf}`23}{dHkXBk$
zNyg}^j+?1Rv0BGUl+xa$o>HEDwy5J6xfxv(IHoG7VI|h8(x<^X4;3zzPax9~Qjc{p
z5;dxe*hphd-}HYH%A!+YCWDZxP(+a^`RuF_G4Y~~T@`~BoCjHsw2U8UDs3@GnxY{!
z<l1fT)Z$ovwcBK$a0+_fj+9EvjRWL`ZYmeW>J=WBoc18j9U}2rnS*U-0$o*fVi}-<
z4Lrha7z$&`Nfb5RzT4B~Zh~WZ*1QOHv-w!Ri=KG1CGVVLQmdeELI?d(e<Zgc>ZsS7
zGZk6#CX<TsmUKWfa}%?LlM~a^3p0z0x%oGjys22EL*`9$D*_tLkB)iyaW6kcBL{>0
zAuoR@pNFBh07hJ(N87!g*%i34-crn!i8%BV(5bV90-c$do1vpSLLbi+xT+)=`T%!C
zf8i|&UUNHiv`{!1Nngj6<GJ}LiFxFm!hK)@QuTCcj*T3_xVbmS@<(!WvvV`sT#Wen
z+!QVep^#3qjv!X7+TnTxEgqq;$}z0=SYpfG__m!(yDVaFMupmqT0rAPX>)G~C1P*`
z7MlT0@}h_c1Rq8ScDmaB5t>=<Y~Hh^I;}NHTWeUTZZ~?@A$ITI>9lT!KAlS>MeQGO
zY87+v4>utkwJuXproL^p{Y?#GO2a{?KAY@pURM;h?@}#6U`(#Ftds4uZiOzFYjrBN
z*Cna;dXtv3llx&moIM{n!KT{RL)dR_;1ovRbT)s^4hD~W)%B6O4%it)OQ@J;(am5W
zXjs)Q=3P$JPU{oovvs*fisQCu^y@dB)&`Z3F1T>lW149|h<!tms&+PShjbxnI!0R`
zt12}*txIIv8+f#F;zkv|zefe`&gsUn)dcm}Au4iBl}_uk8ik$Bo8Sqh!lk1Oa4&P#
zke$|*5QT3iGBJy@eQKR8vPc0}c1CnoX6kX9yaAR^>|mLCB5|$SVUI6Jnz^mszeBaG
zZLU{Y<I^ZUTj*@w!Z*+LHXKUZU1@(ytEj0-F(0JUv9Zx@e1r<5Pg#!|aG_GKmohPg
zkY7(O2y=UfoByWDa~Y!pN+_avt~p;f!E5U(`&Wyew71r9LktS}VNG=}Ww_><zHID<
z?2FK!?CU<&bXT~&8SHAP(O!SFMt#;luyq+JtU^-gLGL)*S{vNPOs+$bp_|NyUM-{S
OtFnJFv+yD`!2Sl4IM|Q?

literal 0
HcmV?d00001


From 0e5d03f31a4ab7239ed6a2d5eafebd102f55e1fe Mon Sep 17 00:00:00 2001
From: Rongxin Liu <rongxinliu.dev@gmail.com>
Date: Thu, 7 Aug 2025 11:04:58 -0400
Subject: [PATCH 06/11] simplified error handling for GitHub authentication

---
 submit50/__main__.py | 13 +------------
 1 file changed, 1 insertion(+), 12 deletions(-)

diff --git a/submit50/__main__.py b/submit50/__main__.py
index b000684..08bc52d 100755
--- a/submit50/__main__.py
+++ b/submit50/__main__.py
@@ -280,18 +280,7 @@ def main():
     else:
         auth_method = None
 
-    try:
-        user_name, commit_hash, message = lib50.push("submit50", args.slug, CONFIG_LOADER, prompt=prompt, auth_method=auth_method)
-    except lib50.ConnectionError:
-        LOGGER.debug(traceback.format_exc())
-        if not os.environ.get("CODESPACES"):
-            raise Error(_(
-                "submit50 failed to authenticate your Github account. Please make sure you are connected to the internet and try again."
-            ))
-    except Exception as e:
-        LOGGER.debug(traceback.format_exc())
-        raise Error(_("Sorry, something's wrong, please try again.\n"
-                                    "If the problem persists, please visit our status page https://cs50.statuspage.io for more information.")) from e
+    user_name, commit_hash, message = lib50.push("submit50", args.slug, CONFIG_LOADER, prompt=prompt, auth_method=auth_method)
     print(message)
 
 if __name__ == "__main__":

From 9781b4745a5d93bb5e43b4827d991daf3b7cce82 Mon Sep 17 00:00:00 2001
From: Rongxin Liu <rongxinliu.dev@gmail.com>
Date: Thu, 22 Jan 2026 07:22:14 +0000
Subject: [PATCH 07/11] update workflow to set output for version using new
 syntax

---
 .github/workflows/main.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index ff52931..e61a384 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -27,7 +27,7 @@ jobs:
       - name: Extract program version
         id: program_version
         run: |
-          echo ::set-output name=version::$(submit50 --version | cut --delimiter ' ' --fields 2)
+          echo "version=$(submit50 --version | cut --delimiter ' ' --fields 2)" >> $GITHUB_OUTPUT
 
       - name: Create Release
         if: ${{ github.ref == 'refs/heads/main' }}

From 215b8702c47a2b9d65b3d0e8b794fedda4c5287f Mon Sep 17 00:00:00 2001
From: Rongxin Liu <10591665+rongxin-liu@users.noreply.github.com>
Date: Fri, 4 Sep 2026 23:24:13 -0400
Subject: [PATCH 08/11] update GitHub Actions workflow to use latest versions
 of checkout, setup-python, and github-script

---
 .github/workflows/main.yml | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index e61a384..eaadee3 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -3,8 +3,8 @@ jobs:
   test-and-deploy:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v6
-      - uses: actions/setup-python@v6
+      - uses: actions/checkout@v7
+      - uses: actions/setup-python@v7
         with:
           python-version: "3.14"
       - name: Run tests
@@ -31,7 +31,7 @@ jobs:
 
       - name: Create Release
         if: ${{ github.ref == 'refs/heads/main' }}
-        uses: actions/github-script@v8
+        uses: actions/github-script@v9
         with:
           github-token: ${{ github.token }}
           script: |

From 24a67d3b762adaf5f51d2b04077426fb7f7a0755 Mon Sep 17 00:00:00 2001
From: Rongxin Liu <10591665+rongxin-liu@users.noreply.github.com>
Date: Fri, 4 Sep 2026 23:53:38 -0400
Subject: [PATCH 09/11] require lib50>=3.1.2 and improve forced-auth error
 handling

lib50.push() only accepts auth_method from 3.1.2 onward, but the pin
admitted 3.0.x-3.1.1, which made every submission fail with a TypeError
for users whose lib50 pip had no reason to upgrade.

Also: raise an actionable error when a forced --ssh login fails (lib50
raises a bare ConnectionError there), skip the localized yes-regex under
RSTUDIO instead of matching a hard-coded "yes" against it, surface the
both-flags warning via cprint like other warnings, and fix the missing
space in the submit.cs50.io error text.
---
 setup.py             |  5 +++--
 submit50/__main__.py | 51 +++++++++++++++++++++++++++-----------------
 2 files changed, 35 insertions(+), 21 deletions(-)

diff --git a/setup.py b/setup.py
index 35bbcd8..fee582f 100755
--- a/setup.py
+++ b/setup.py
@@ -16,10 +16,11 @@
     },
     description="This is submit50, with which you can submit solutions to problems for CS50.",
     long_description="This is submit50, with which you can submit solutions to problems for CS50.",
-    install_requires=["lib50>=3,<4", "packaging", "pytz", "requests>=2.19", "setuptools", "termcolor>=1.1"],
+    # lib50 >= 3.1.2 is the first release whose push() accepts auth_method
+    install_requires=["lib50>=3.1.2,<4", "packaging", "pytz", "requests>=2.19", "setuptools", "termcolor>=1.1"],
     keywords=["submit", "submit50"],
     name="submit50",
-    python_requires=">=3.6",
+    python_requires=">=3.8",
     license="GPLv3",
     packages=["submit50"],
     url="https://github.com/cs50/submit50",
diff --git a/submit50/__main__.py b/submit50/__main__.py
index 08bc52d..16da9c2 100755
--- a/submit50/__main__.py
+++ b/submit50/__main__.py
@@ -23,8 +23,6 @@
 # Internationalization
 gettext.install("submit50", str(files("submit50").joinpath("locale")))
 
-LOGGER = logging.getLogger("submit50")
-
 SUBMIT_URL = "https://submit.cs50.io"
 
 class LogLevel(enum.IntEnum):
@@ -70,7 +68,7 @@ def check_version(package_name=__package__, timeout=5):
     # Retrieve version info
     res = requests.get(f"{SUBMIT_URL}/versions/submit50", timeout=timeout)
     if res.status_code != 200:
-        raise Error(_("Could not connect to submit.cs50.io."
+        raise Error(_("Could not connect to submit.cs50.io. "
                       "Please visit our status page https://cs50.statuspage.io for more information."))
 
     # Get the minimum required version from submit.cs50.io
@@ -163,17 +161,17 @@ def prompt(honesty, included, excluded):
             honesty_question = str(honesty)
 
         # Get the user's answer
-        # If in R Studio environment, answer is always yes
+        # If in R Studio environment, the answer is always yes (skip the localized regex)
         if os.getenv("RSTUDIO") == "1":
-            answer = "yes"
-        else:
-            answer = input(honesty_question)
+            return True
+
+        answer = input(honesty_question)
     except EOFError:
         answer = None
         print()
 
     # If no answer given, or yes is not given, don't continue
-    if not answer or not re.match(f"^\s*(?:{_('y|yes')})\s*$", answer, re.I):
+    if not answer or not re.match(rf"^\s*(?:{_('y|yes')})\s*$", answer, re.I):
         return False
 
     # Otherwise, do continue
@@ -193,7 +191,7 @@ def check_slug_year(slug):
             cprint(suggested_slug, "yellow")
 
             # Ask if they want to continue
-            if not re.match(f"^\s*(?:{_('y|yes')})\s*$", input(_("Do you want to continue with this submission (yes/no)? ")), re.I):
+            if not re.match(rf"^\s*(?:{_('y|yes')})\s*$", input(_("Do you want to continue with this submission (yes/no)? ")), re.I):
                 raise Error(_("User aborted submission."))
             
     except ValueError:
@@ -270,18 +268,33 @@ def main():
     check_slug_year(args.slug)
 
     # Decide whether to force HTTPS or SSH authentication
-    if args.https and args.ssh:
-        LOGGER.warning(_("--https and --ssh have no effect when used together"))
-        auth_method = None
-    elif args.https:
-        auth_method = "https"
-    elif args.ssh:
-        auth_method = "ssh"
-    else:
-        auth_method = None
+    auth_method = resolve_auth_method(args.https, args.ssh)
 
-    user_name, commit_hash, message = lib50.push("submit50", args.slug, CONFIG_LOADER, prompt=prompt, auth_method=auth_method)
+    try:
+        user_name, commit_hash, message = lib50.push("submit50", args.slug, CONFIG_LOADER, prompt=prompt, auth_method=auth_method)
+    except lib50.ConnectionError as e:
+        # lib50 raises a bare ConnectionError when a forced SSH login fails (no HTTPS fallback);
+        # give the user something more actionable than the generic status-page message
+        if auth_method == "ssh" and not str(e):
+            raise Error(_("SSH authentication failed. Make sure your SSH key is added to your GitHub account "
+                          "and loaded in ssh-agent, or omit --ssh to authenticate via HTTPS instead."))
+        raise
     print(message)
 
+
+def resolve_auth_method(https, ssh):
+    """
+    Map the --https/--ssh flags to lib50's auth_method ("https", "ssh", or None for lib50's default).
+    Warn and fall back to the default when both flags are given.
+    """
+    if https and ssh:
+        cprint(_("--https and --ssh have no effect when used together"), "yellow")
+        return None
+    if https:
+        return "https"
+    if ssh:
+        return "ssh"
+    return None
+
 if __name__ == "__main__":
     main()

From f056333e6a480b1e97ea6ab16f3c91fd3b8b1b3d Mon Sep 17 00:00:00 2001
From: Rongxin Liu <10591665+rongxin-liu@users.noreply.github.com>
Date: Fri, 4 Sep 2026 23:53:38 -0400
Subject: [PATCH 10/11] complete vietnamese catalog and fix concatenated msgstr
 spacing

Translate the --https/--ssh help, --log-level help, slug help, the
combined-flag warning and the new SSH failure message; restore the
missing spaces where multi-line msgstr fragments were joined; accept
ASCII "co" as an affirmative; distinguish "User aborted submission."
from "Submission cancelled."; recompile the committed .mo.
---
 submit50/locale/vi/LC_MESSAGES/submit50.mo | Bin 2651 -> 3725 bytes
 submit50/locale/vi/LC_MESSAGES/submit50.po |  60 ++++++++++++++-------
 2 files changed, 42 insertions(+), 18 deletions(-)

diff --git a/submit50/locale/vi/LC_MESSAGES/submit50.mo b/submit50/locale/vi/LC_MESSAGES/submit50.mo
index f6b45096fed5ba24f3a468c9bf821fffb2309035..fa1a2cf1d8175f3a3e165a0b680b2aac7c576260 100644
GIT binary patch
delta 1555
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zZDffRg9Jb7AR0y5u#|vcb%`MEK%`6%9}1!mz7&Lc@ImlJeDbOO@60sDYQce--`sQW
zIp=@RIhSvJYhU;0?Zx*Qp4;&5#d}FDHa&9%#>TLI74*P9I1b)@17rKZ7r;BfSHPp-
z5~u?H2C8$fZDH(VZ~(psK3`;PC-^J4i?J@df}a3}T|<oB0=^BZfM-D^Xbrp_ybNv!
z{{Rnyr4nN=fmIMDwgfIf+*$BptPc)D6ljB!U;^$2_m41kC-^9M9Qm1!pYLIaz=y!a
zGGjl0-+>pvk8aAU^Tf??#`;BY9()5-6&T){2|WO+1d};WfNH-3*1!+IKKLUDE$sDe
z_>5I5j+AYmG;UI*;`<Ic+Kfe9kY(GJA!*jJI0e3Ck`#4II+hpiE$lDQ>SKjp3f<``
z(gGN{bPY|qf|ISeP0Os((^|tKKkzK-h`^(1oNQPfa*@h3(`ebo<F1?vbkYn%1YD*%
znnF`2Tu#ta(dvkPh=fO?<;q;76lvbwd18xZT#crV9eZ{fZoafMbM>w*PZcI?;ThJo
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zAe?f$UoE@b7BzKu6rkB8L$q3`xldlet7X&D130I<s3wU(wgX9GhyCxv;fKY03Wvjs
z#fh!=S4JPKj2@xGW3?mW;mFXQ&6fK{!+VE*pM0P?T4q<fJQJVG3)pbtFL|Aec$FMC
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zT~&+mJ2)>%PX^0wm8RlehYXlLH!^VYl0hF~k$zQ6hr&pr6)kn(w0<V;;q&bmNz_we
z<4;=z$%15j&V`Ri20c#s#HhPG_fHRwwC&7e)8r_(uMDJ!-pMb&ekO@d)61K*pA7Qx
z2^WU@6YK9n2QIbJA)Z7_ZPJmy%ATn!WuIIvP@4PNQ{kzRNz`g><ixlhz}NWiH0(N?
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zK{H7-pIROAljt)tljuCJ=W{xn7hk5`RBl-S%*aA22=!5YUG8kmZq}_vGWbT)$sqMe
QJNrLEFk{XTa~MVT7b-asKL7v#

delta 481
zcmajaK}!Nr5C`yiwyv%zgd|0|u|?7$jFmFA0wFIQ3?e8g$b%B(Me5L@Ff529B7}wr
zLnyj*tH4XN5Qv95)dvuQJxHexeSzq|bg5GV!*Av>%zN)xZFUylywWKlI*@*3)oOl)
zUl47eS78K}p$ea1A8f&SDA|atMJZ^_eZUhKXe08$d)N(M;3j;BxU)zr5>Xcp^3V$p
zpdD6V3Cl0wHu@o%Xc}I@9@v8YkQ_uyU;w_t0-S<LC(#W&gw|YC!3<o6yKo1p))&4|
zSPT8GpPxmb^?(J)cOoF>xGK%o25o1emXc-!H|@h*k%vTx>++;09Mq#hJ*<UBC-gB^
z9KC-|#yRBplp-U#i&veG99MiCQ}%?$4@zCcx!_9jdHZc*F=ra3td=*8%DR?mT;{Zl
gX&h;5rg6Pxm1X*Og7@7Ces-rh?TN|RLbg$(Z;<O_SO5S3

diff --git a/submit50/locale/vi/LC_MESSAGES/submit50.po b/submit50/locale/vi/LC_MESSAGES/submit50.po
index 53c910a..79c3836 100644
--- a/submit50/locale/vi/LC_MESSAGES/submit50.po
+++ b/submit50/locale/vi/LC_MESSAGES/submit50.po
@@ -5,10 +5,10 @@
 #
 msgid ""
 msgstr ""
-"Project-Id-Version: submit50 3.2.1\n"
+"Project-Id-Version: submit50 3.2.2\n"
 "Report-Msgid-Bugs-To: EMAIL@ADDRESS\n"
-"POT-Creation-Date: 2025-08-05 13:04-0400\n"
-"PO-Revision-Date: 2025-08-05 13:06-0400\n"
+"POT-Creation-Date: 2026-09-04 23:47-0400\n"
+"PO-Revision-Date: 2026-09-04 23:50-0400\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language: vi\n"
 "Language-Team: vi <LL@li.org>\n"
@@ -16,11 +16,11 @@ msgstr ""
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=utf-8\n"
 "Content-Transfer-Encoding: 8bit\n"
-"Generated-By: Babel 2.17.0\n"
+"Generated-By: Babel 2.18.0\n"
 
 #: submit50/__main__.py:71
 msgid ""
-"Could not connect to submit.cs50.io.Please visit our status page "
+"Could not connect to submit.cs50.io. Please visit our status page "
 "https://cs50.statuspage.io for more information."
 msgstr ""
 "Không kết nối đến submit.cs50.io được. Vui lòng xem "
@@ -44,36 +44,35 @@ msgid ""
 "restrictions on AI use, are you sure you want to submit these files "
 "(yes/no)? "
 msgstr ""
-"Cân nhắc quy định về tính trung thực trong học thuật, bao gồm cả "
-"các hạn chế về việc sử dụng AI, bạn có chắc chắn muốn nộp các tập tin này không?"
+"Cân nhắc quy định về tính trung thực trong học thuật, bao gồm cả các hạn "
+"chế về việc sử dụng AI, bạn có chắc chắn muốn nộp các tập tin này không "
 "(có/không)? "
 
 #: submit50/__main__.py:174 submit50/__main__.py:194
 msgid "y|yes"
-msgstr "c|có"
+msgstr "c|co|có"
 
 #: submit50/__main__.py:189
 msgid ""
 "You are submitting to a previous year's CS50x course. Your submission "
 "will not be counted towards this year's course."
 msgstr ""
-"Bạn đang nộp bài cho khóa học CS50x của năm trước."
-"Bài này sẽ không được tính vào khóa học năm nay."
+"Bạn đang nộp bài cho khóa học CS50x của năm trước. Bài này sẽ không được "
+"tính vào khóa học năm nay."
 
 #: submit50/__main__.py:190
 msgid ""
 "If you are looking to submit to this year's course, please use the "
 "following slug:"
-msgstr ""
-"Nếu bạn muốn nộp bài cho khóa học năm nay, vui lòng sử dụng slug này: "
+msgstr "Nếu bạn muốn nộp bài cho khóa học năm nay, vui lòng sử dụng slug này:"
 
 #: submit50/__main__.py:194
 msgid "Do you want to continue with this submission (yes/no)? "
-msgstr "Bạn có muốn tiếp tục nộp bài này không (có/không)?"
+msgstr "Bạn có muốn tiếp tục nộp bài này không (có/không)? "
 
 #: submit50/__main__.py:195
 msgid "User aborted submission."
-msgstr "Việc nộp bài bị hủy bỏ."
+msgstr "Người dùng đã hủy nộp bài."
 
 #: submit50/__main__.py:207
 msgid ""
@@ -81,12 +80,12 @@ msgid ""
 "please visit our status page https://cs50.statuspage.io for more "
 "information."
 msgstr ""
-"Rất tiếc, có gì xảy ra, vui lòng thử nộp lại. Nếu vấn đề này còn tiếp nữa, "
-"vui lòng xem https://cs50.statuspage.io để biết thêm thông tin."
+"Rất tiếc, có gì xảy ra, vui lòng thử nộp lại. Nếu vấn đề này còn tiếp "
+"nữa, vui lòng xem https://cs50.statuspage.io để biết thêm thông tin."
 
 #: submit50/__main__.py:212
 msgid "Submission cancelled."
-msgstr "Việc nộp bài bị hủy bỏ"
+msgstr "Đã hủy nộp bài."
 
 #: submit50/__main__.py:218
 msgid "logout of submit50"
@@ -106,8 +105,33 @@ msgid ""
 "info: adds all commands run.\n"
 "debug: adds the output of all commands run."
 msgstr ""
+"warning: hiển thị các cảnh báo về cách sử dụng.\n"
+"info: thêm tất cả các lệnh đã chạy.\n"
+"debug: thêm kết quả của tất cả các lệnh đã chạy."
+
+#: submit50/__main__.py:248
+msgid "force authentication via HTTPS"
+msgstr "buộc xác thực qua HTTPS"
+
+#: submit50/__main__.py:251
+msgid "force authentication via SSH"
+msgstr "buộc xác thực qua SSH"
 
-#: submit50/__main__.py:253
+#: submit50/__main__.py:259
 msgid "prescribed identifier of work to submit"
+msgstr "định danh được chỉ định của bài cần nộp"
+
+#: submit50/__main__.py:279
+msgid ""
+"SSH authentication failed. Make sure your SSH key is added to your GitHub"
+" account and loaded in ssh-agent, or omit --ssh to authenticate via HTTPS"
+" instead."
 msgstr ""
+"Xác thực SSH thất bại. Hãy chắc chắn rằng khóa SSH của bạn đã được thêm "
+"vào tài khoản GitHub và đã được nạp vào ssh-agent, hoặc bỏ --ssh để xác "
+"thực qua HTTPS."
+
+#: submit50/__main__.py:291
+msgid "--https and --ssh have no effect when used together"
+msgstr "--https và --ssh không có hiệu lực khi dùng cùng nhau"
 

From 1327b9c7056ad599ab82273362f01d9724971c52 Mon Sep 17 00:00:00 2001
From: Rongxin Liu <10591665+rongxin-liu@users.noreply.github.com>
Date: Fri, 4 Sep 2026 23:53:38 -0400
Subject: [PATCH 11/11] add smoke tests and run them against the minimum lib50
 in CI

CI previously only ran `submit50 --help`, so a lib50 API mismatch could
ship to PyPI unnoticed. The new tests wire each --https/--ssh flag
combination through main() to lib50.push, check the forced-SSH error
path, and verify every _() string is translated and the committed .mo
matches its .po. The workflow runs them against both the newest lib50
and the floor declared in setup.py.
---
 .github/workflows/main.yml |  11 +++-
 tests/test_locale.py       |  91 +++++++++++++++++++++++++++++
 tests/test_main.py         | 114 +++++++++++++++++++++++++++++++++++++
 3 files changed, 215 insertions(+), 1 deletion(-)
 create mode 100644 tests/test_locale.py
 create mode 100644 tests/test_main.py

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index eaadee3..3c97723 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -9,10 +9,19 @@ jobs:
           python-version: "3.14"
       - name: Run tests
         run: |
-          pip install babel
+          pip install babel pytest
           pip install .
           submit50 --help
           python setup.py compile_catalog
+          pytest -q
+      - name: Run tests against the minimum supported lib50
+        run: |
+          # Exercise the oldest lib50 that setup.py admits, so an API drift (e.g. a missing
+          # push() kwarg) fails here instead of on students' machines.
+          floor=$(python -c "import re; print(re.search(r'lib50>=([\d.]+)', open('setup.py').read()).group(1))")
+          pip install "lib50==$floor"
+          pytest -q
+          pip install --upgrade "lib50<4"
       - name: Install pypa/build
         run: python -m pip install build --user
       - name: Build a binary wheel and a source tarball
diff --git a/tests/test_locale.py b/tests/test_locale.py
new file mode 100644
index 0000000..e3292ad
--- /dev/null
+++ b/tests/test_locale.py
@@ -0,0 +1,91 @@
+"""Consistency checks for the gettext catalogs under submit50/locale."""
+import ast
+import gettext
+import io
+import pathlib
+import re
+
+import pytest
+from babel.messages.mofile import write_mo
+from babel.messages.pofile import read_po
+
+ROOT = pathlib.Path(__file__).resolve().parent.parent
+SOURCE = ROOT / "submit50" / "__main__.py"
+LOCALE_DIR = ROOT / "submit50" / "locale"
+LOCALES = sorted(p.name for p in LOCALE_DIR.iterdir() if (p / "LC_MESSAGES" / "submit50.po").is_file())
+
+# Catalogs known to be incomplete before the completeness check existed.
+KNOWN_INCOMPLETE = {"es"}
+
+
+def source_strings():
+    """Every string literal passed to _() in __main__.py."""
+    literals = set()
+    for node in ast.walk(ast.parse(SOURCE.read_text())):
+        if (
+            isinstance(node, ast.Call)
+            and isinstance(node.func, ast.Name)
+            and node.func.id == "_"
+            and node.args
+            and isinstance(node.args[0], ast.Constant)
+            and isinstance(node.args[0].value, str)
+        ):
+            literals.add(node.args[0].value)
+    assert literals, "no _() literals found -- extraction is broken"
+    return literals
+
+
+def load_po(locale):
+    with open(LOCALE_DIR / locale / "LC_MESSAGES" / "submit50.po", "rb") as f:
+        return read_po(f, locale=locale)
+
+
+@pytest.mark.parametrize("locale", LOCALES)
+def test_every_source_string_is_translated(locale, request):
+    if locale in KNOWN_INCOMPLETE:
+        request.applymarker(pytest.mark.xfail(reason=f"{locale} catalog is known to be incomplete", strict=True))
+    catalog = load_po(locale)
+    translations = {m.id: m.string for m in catalog if m.id}
+    missing = sorted(s for s in source_strings() if s not in translations)
+    empty = sorted(s for s in source_strings() if s in translations and not translations[s])
+    fuzzy = sorted(m.id for m in catalog if m.id and m.fuzzy)
+    assert not missing, f"{locale}: strings missing from catalog: {missing}"
+    assert not empty, f"{locale}: untranslated strings: {empty}"
+    assert not fuzzy, f"{locale}: fuzzy entries are skipped by compile_catalog: {fuzzy}"
+
+
+@pytest.mark.parametrize("locale", LOCALES)
+def test_prompt_translations_keep_trailing_space(locale):
+    """input() prompts end with a space in the source; a translation that drops it glues the cursor to the text."""
+    for message in load_po(locale):
+        if message.id and message.string and message.id.endswith(" "):
+            assert message.string.endswith(" "), f"{locale}: translation of {message.id!r} lost its trailing space"
+
+
+@pytest.mark.parametrize("locale", LOCALES)
+def test_yes_regex_translation_is_valid(locale):
+    """`y|yes` is interpolated into a regex; the translation must compile and accept its own affirmative."""
+    catalog = load_po(locale)
+    translated = catalog.get("y|yes")
+    if translated is None or not translated.string:
+        pytest.skip(f"{locale}: y|yes not translated")
+    pattern = re.compile(rf"^\s*(?:{translated.string})\s*$", re.I)
+    first_alternative = translated.string.split("|")[0]
+    assert pattern.match(first_alternative), f"{locale}: regex rejects its own first alternative"
+    assert not pattern.match("no"), f"{locale}: regex accepts 'no'"
+
+
+@pytest.mark.parametrize("locale", LOCALES)
+def test_committed_mo_matches_po(locale):
+    """A committed .mo must be the compiled form of the committed .po (`*.mo` is gitignored, so it drifts silently)."""
+    mo_path = LOCALE_DIR / locale / "LC_MESSAGES" / "submit50.mo"
+    if not mo_path.is_file():
+        pytest.skip(f"{locale}: no .mo committed (CI compiles it at build time)")
+    buf = io.BytesIO()
+    write_mo(buf, load_po(locale))
+    expected = gettext.GNUTranslations(io.BytesIO(buf.getvalue()))._catalog
+    with open(mo_path, "rb") as f:
+        actual = gettext.GNUTranslations(f)._catalog
+    expected.pop("", None)
+    actual.pop("", None)
+    assert actual == expected, f"{locale}: submit50.mo is stale -- run `python setup.py compile_catalog` and recommit"
diff --git a/tests/test_main.py b/tests/test_main.py
new file mode 100644
index 0000000..adf4e5c
--- /dev/null
+++ b/tests/test_main.py
@@ -0,0 +1,114 @@
+"""Smoke tests for submit50's CLI wiring against lib50.
+
+These run in CI against both the newest lib50 and the minimum version declared in
+setup.py, so a lib50 API drift (e.g. a missing ``auth_method`` kwarg) fails the
+build instead of every student's submission.
+"""
+import inspect
+import re
+import subprocess
+import sys
+
+import lib50
+import pytest
+
+import submit50.__main__ as cli
+
+
+def test_lib50_push_accepts_auth_method():
+    assert "auth_method" in inspect.signature(lib50.push).parameters
+
+
+@pytest.mark.parametrize(
+    "https, ssh, expected",
+    [
+        (False, False, None),
+        (True, False, "https"),
+        (False, True, "ssh"),
+        (True, True, None),
+    ],
+)
+def test_resolve_auth_method(https, ssh, expected, capsys):
+    assert cli.resolve_auth_method(https, ssh) == expected
+    out = capsys.readouterr().out
+    if https and ssh:
+        assert "--https and --ssh" in out
+    else:
+        assert out == ""
+
+
+def _stub_checks(monkeypatch):
+    """Skip the network-dependent preflight checks."""
+    monkeypatch.setattr(cli, "check_announcements", lambda: None)
+    monkeypatch.setattr(cli, "check_version", lambda: None)
+    monkeypatch.setattr(cli, "check_slug_year", lambda slug: None)
+
+
+@pytest.mark.parametrize(
+    "flags, expected",
+    [
+        ([], None),
+        (["--https"], "https"),
+        (["--ssh"], "ssh"),
+        (["--https", "--ssh"], None),
+    ],
+)
+def test_main_passes_auth_method_to_lib50(flags, expected, monkeypatch, capsys):
+    _stub_checks(monkeypatch)
+    calls = []
+
+    def fake_push(tool, slug, config_loader, **kwargs):
+        calls.append((tool, slug, kwargs))
+        return "user", "deadbeef", "pushed"
+
+    monkeypatch.setattr(lib50, "push", fake_push)
+    monkeypatch.setattr(sys, "argv", ["submit50", *flags, "cs50/problems/2026/x/hello"])
+
+    cli.main()
+
+    assert len(calls) == 1
+    tool, slug, kwargs = calls[0]
+    assert (tool, slug) == ("submit50", "cs50/problems/2026/x/hello")
+    assert kwargs["auth_method"] == expected
+    assert kwargs["prompt"] is cli.prompt
+    assert "pushed" in capsys.readouterr().out
+
+
+def test_forced_ssh_failure_gets_actionable_error(monkeypatch):
+    _stub_checks(monkeypatch)
+
+    def fail_push(*args, **kwargs):
+        raise lib50.ConnectionError  # lib50 raises this bare when a forced SSH login fails
+
+    monkeypatch.setattr(lib50, "push", fail_push)
+    monkeypatch.setattr(sys, "argv", ["submit50", "--ssh", "cs50/problems/2026/x/hello"])
+
+    with pytest.raises(cli.Error, match="SSH authentication failed"):
+        cli.main()
+
+
+def test_unforced_connection_error_is_not_rewritten(monkeypatch):
+    _stub_checks(monkeypatch)
+
+    def fail_push(*args, **kwargs):
+        raise lib50.ConnectionError
+
+    monkeypatch.setattr(lib50, "push", fail_push)
+    monkeypatch.setattr(sys, "argv", ["submit50", "cs50/problems/2026/x/hello"])
+
+    with pytest.raises(lib50.ConnectionError):
+        cli.main()
+
+
+def test_rstudio_skips_honesty_prompt(monkeypatch):
+    monkeypatch.setenv("RSTUDIO", "1")
+    monkeypatch.setattr("builtins.input", lambda *a: pytest.fail("input() must not be called under RSTUDIO"))
+    assert cli.prompt(True, ["hello.c"], []) is True
+
+
+def test_version_output_shape():
+    """The release workflow extracts the tag with `cut -d' ' -f2`; keep `<prog> <version>`."""
+    out = subprocess.run(
+        [sys.executable, "-m", "submit50", "--version"], capture_output=True, text=True, check=True
+    ).stdout.strip()
+    assert re.fullmatch(r"submit50 \d+\.\d+\.\d+", out), out