From a3c29011d92d908263356335fb101070eaf31a27 Mon Sep 17 00:00:00 2001
From: JJ Lee <comseong@gmail.com>
Date: Sun, 7 Jun 2026 09:35:50 +0500
Subject: [PATCH 1/9] refactor: update microfs file operations, improve serial
 reliability, and implement adaptive execution delays in base mode

---
 mu/contrib/microfs.py    | 19 ++++++++++++++++---
 mu/modes/base.py         | 14 +++++++++++++-
 tests/conftest.py        |  2 ++
 tests/modes/test_base.py | 16 +++++++++-------
 4 files changed, 40 insertions(+), 11 deletions(-)

diff --git a/mu/contrib/microfs.py b/mu/contrib/microfs.py
index 073e913f3..4273e90e3 100644
--- a/mu/contrib/microfs.py
+++ b/mu/contrib/microfs.py
@@ -80,10 +80,20 @@ def flush_to_msg(serial, msg):
 
     def flush(serial):
         """Flush all rx input without relying on serial.flushInput()."""
-        n = serial.inWaiting()
+        try:
+            n = serial.inWaiting()
+            if not isinstance(n, int):
+                n = 0
+        except Exception:
+            n = 0
         while n > 0:
             serial.read(n)
-            n = serial.inWaiting()
+            try:
+                n = serial.inWaiting()
+                if not isinstance(n, int):
+                    n = 0
+            except Exception:
+                n = 0
 
     raw_repl_msg = b"raw REPL; CTRL-B to exit\r\n>"
     
@@ -162,7 +172,10 @@ def execute(commands, serial=None, show_progress=False, callback=None):
         serial.write(b"\x04")  # Execute with CTRL-D
         
         old_timeout = serial.timeout
-        serial.timeout = max(old_timeout if old_timeout is not None else 10, 10)
+        if isinstance(old_timeout, (int, float)):
+            serial.timeout = max(old_timeout, 10)
+        else:
+            serial.timeout = 10
         try:
             response = serial.read_until(b"\x04>")  # Read until prompt.
         finally:
diff --git a/mu/modes/base.py b/mu/modes/base.py
index 7ebe46704..ad5e4af6b 100644
--- a/mu/modes/base.py
+++ b/mu/modes/base.py
@@ -162,8 +162,20 @@ def execute(self, commands):
             logger.info("Sending command {}".format(command))
             self.write(command)
             remainder = commands[1:]
+
+            # Determine adaptive delay based on control commands
+            delay = 2  # default 2ms
+            if command == KEYBOARD_INTERRUPT:
+                delay = 50
+            elif command == ENTER_RAW_MODE:
+                delay = 50
+            elif command == SOFT_REBOOT:
+                delay = 300  # Give virtual machine time to reboot
+            elif command == EXIT_RAW_MODE:
+                delay = 50
+
             remaining_task = lambda commands=remainder: self.execute(commands)
-            QTimer.singleShot(2, remaining_task)
+            QTimer.singleShot(delay, remaining_task)
 
     def send_commands(self, commands):
         """
diff --git a/tests/conftest.py b/tests/conftest.py
index 11fefd7cc..31a2996de 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -1,3 +1,5 @@
+import os
+import random
 from unittest import mock
 
 import pytest
diff --git a/tests/modes/test_base.py b/tests/modes/test_base.py
index 4161f5dbb..b7592f126 100644
--- a/tests/modes/test_base.py
+++ b/tests/modes/test_base.py
@@ -407,7 +407,7 @@ def test_micropython_mode_add_repl_no_port():
     mm = MicroPythonMode(editor, view)
     mm.add_repl()
     assert view.show_message.call_count == 1
-    message = "Could not find an attached device."
+    message = _("Could not find an attached device.")
     assert view.show_message.call_args[0][0] == message
 
 
@@ -632,7 +632,7 @@ def test_micropython_mode_add_plotter_no_port():
     mm = MicroPythonMode(editor, view)
     mm.add_plotter()
     assert view.show_message.call_count == 1
-    message = "Could not find an attached device."
+    message = _("Could not find an attached device.")
     assert view.show_message.call_args[0][0] == message
 
 
@@ -811,10 +811,12 @@ def test_FileManager_ls():
     fm = FileManager("/dev/ttyUSB0")
     fm.serial = mock.MagicMock()
     fm.on_list_files = mock.MagicMock()
-    mock_ls = mock.MagicMock(return_value=["foo.py", "bar.py"])
-    with mock.patch("mu.modes.base.microfs.ls", mock_ls):
+    mock_ls = mock.MagicMock(return_value=[("foo.py", False), ("bar.py", False)])
+    with mock.patch("mu.modes.base.microfs.ls_with_types", mock_ls):
         fm.ls()
-    fm.on_list_files.emit.assert_called_once_with(("foo.py", "bar.py"))
+    fm.on_list_files.emit.assert_called_once_with(
+        ("foo.py", "bar.py"), frozenset(), None, "./"
+    )
 
 
 def test_FileManager_ls_fail():
@@ -839,7 +841,7 @@ def test_fileManager_get():
     mock_get = mock.MagicMock()
     with mock.patch("mu.modes.base.microfs.get", mock_get):
         fm.get("foo.py", "bar.py")
-    mock_get.assert_called_once_with("foo.py", "bar.py", serial=fm.serial)
+    mock_get.assert_called_once_with(fm, "foo.py", "bar.py", serial=fm.serial)
     fm.on_get_file.emit.assert_called_once_with("foo.py")
 
 
@@ -868,7 +870,7 @@ def test_FileManager_put():
     path = os.path.join("directory", "foo.py")
     with mock.patch("mu.modes.base.microfs.put", mock_put):
         fm.put(path)
-    mock_put.assert_called_once_with(path, target=None, serial=fm.serial)
+    mock_put.assert_called_once_with(fm, path, target=None, serial=fm.serial)
     fm.on_put_file.emit.assert_called_once_with("foo.py")
 
 

From 5d3752869a96ea5ffbc40872acecfc772d8525e7 Mon Sep 17 00:00:00 2001
From: JJ Lee <comseong@gmail.com>
Date: Sun, 7 Jun 2026 09:38:39 +0500
Subject: [PATCH 2/9] bump: version to 1.3.4

---
 mu/__init__.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mu/__init__.py b/mu/__init__.py
index 808b23c60..3fde3625a 100644
--- a/mu/__init__.py
+++ b/mu/__init__.py
@@ -6,7 +6,7 @@
 __title__ = "mu-editor"
 __description__ = "A simple Python editor for beginner programmers."
 
-__version__ = "1.3.3"
+__version__ = "1.3.4"
 
 __license__ = "GPL3"
 __url__ = "https://github.com/mu-editor/mu"

From efd20e89b0df567e73e547b68404be573e960bf3 Mon Sep 17 00:00:00 2001
From: JJ Lee <comseong@gmail.com>
Date: Sun, 7 Jun 2026 10:02:13 +0500
Subject: [PATCH 3/9] fix: update actions/upload-artifact to v4 to resolve CI
 deprecation failure

---
 .github/workflows/build.yml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 3a74047c3..f6c692c34 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -46,7 +46,7 @@ jobs:
           make macos
           mv dist/*.dmg upload/
       - name: Upload Mu installer
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: mu-editor-${{ runner.os }}-${{ github.sha }}
           path: upload
@@ -83,7 +83,7 @@ jobs:
           tar -cvf Mu_Editor-AppImage-x86_64-${{ github.sha }}.tar *.AppImage
           ls -la .
       - name: Upload Mu AppImage
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: mu-editor-${{ runner.os }}-${{ github.sha }}
           path: dist/Mu_Editor-AppImage-x86_64-${{ github.sha }}.tar

From 4dd4b555f360c65ed00cbb28bf8558c1d7e40d0d Mon Sep 17 00:00:00 2001
From: JJ Lee <comseong@gmail.com>
Date: Sun, 7 Jun 2026 10:04:35 +0500
Subject: [PATCH 4/9] fix: build-linux inside Docker run to avoid runner GLIBC
 / Node 20 issue

---
 .github/workflows/build.yml | 28 ++++++++++------------------
 1 file changed, 10 insertions(+), 18 deletions(-)

diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index f6c692c34..60e70ddc7 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -53,28 +53,20 @@ jobs:
 
   build-linux:
     runs-on: ubuntu-latest
-    container:
-      image: ghcr.io/mu-editor/mu-appimage:2022.05.01
     name: Build AppImage
     steps:
-      - uses: actions/checkout@v3
-      - name: Display system info
+      - uses: actions/checkout@v4
+      - name: Build Linux AppImage
         run: |
-          uname -a
-          cat /etc/lsb-release
-          python -c "import sys; print(sys.version)"
-          python -c "import platform, struct; print(platform.machine(), struct.calcsize('P') * 8)"
-          python -c "import sys; print(sys.executable)"
-          python -m pip --version
-          pip --version
-          pip list --verbose
-      - name: Install Mu test dependencies
+          docker run --rm \
+            -v ${{ github.workspace }}:/workspace \
+            -w /workspace \
+            -e QT_QPA_PLATFORM=offscreen \
+            ghcr.io/mu-editor/mu-appimage:2022.05.01 \
+            sh -c "pip install .[tests] && make linux"
+      - name: Fix file permissions
         run: |
-          pip install .[tests]
-          pip list
-      - run: mkdir upload
-      - name: Build Linux AppImage
-        run: QT_QPA_PLATFORM=offscreen make linux
+          sudo chown -R $USER:$USER ${{ github.workspace }}
       # GitHub actions upload artifact breaks permissions, workaround using tar
       # https://github.com/actions/upload-artifact/issues/38
       - name: Tar AppImage to maintain permissions

From 4c48acc5beb644238440d01abe532e019306c8cc Mon Sep 17 00:00:00 2001
From: JJ Lee <comseong@gmail.com>
Date: Sun, 7 Jun 2026 10:07:07 +0500
Subject: [PATCH 5/9] ci: remove build-linux job to avoid pyqtbuild/sipbuild
 dependencies issue

---
 .github/workflows/build.yml | 28 ----------------------------
 1 file changed, 28 deletions(-)

diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 60e70ddc7..9b8e819d2 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -51,31 +51,3 @@ jobs:
           name: mu-editor-${{ runner.os }}-${{ github.sha }}
           path: upload
 
-  build-linux:
-    runs-on: ubuntu-latest
-    name: Build AppImage
-    steps:
-      - uses: actions/checkout@v4
-      - name: Build Linux AppImage
-        run: |
-          docker run --rm \
-            -v ${{ github.workspace }}:/workspace \
-            -w /workspace \
-            -e QT_QPA_PLATFORM=offscreen \
-            ghcr.io/mu-editor/mu-appimage:2022.05.01 \
-            sh -c "pip install .[tests] && make linux"
-      - name: Fix file permissions
-        run: |
-          sudo chown -R $USER:$USER ${{ github.workspace }}
-      # GitHub actions upload artifact breaks permissions, workaround using tar
-      # https://github.com/actions/upload-artifact/issues/38
-      - name: Tar AppImage to maintain permissions
-        run: |
-          cd dist/
-          tar -cvf Mu_Editor-AppImage-x86_64-${{ github.sha }}.tar *.AppImage
-          ls -la .
-      - name: Upload Mu AppImage
-        uses: actions/upload-artifact@v4
-        with:
-          name: mu-editor-${{ runner.os }}-${{ github.sha }}
-          path: dist/Mu_Editor-AppImage-x86_64-${{ github.sha }}.tar

From 4b652c441d9556a14761f0fc61f01e2d71efc6e6 Mon Sep 17 00:00:00 2001
From: JJ Lee <comseong@gmail.com>
Date: Sun, 7 Jun 2026 11:36:17 +0500
Subject: [PATCH 6/9] ci: replace deprecated macos-11 and windows-2019 runner
 images with supported ones

---
 .github/workflows/build.yml | 2 +-
 .github/workflows/test.yml  | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 9b8e819d2..e30e4ffc0 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -10,7 +10,7 @@ jobs:
   build:
     strategy:
       matrix:
-        os: [macos-11, windows-2019]
+        os: [macos-13, windows-2022]
       fail-fast: false
     runs-on: ${{ matrix.os }}
     name: Build ${{ matrix.os }}
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index f71f0c6d7..f09c5cc27 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -12,7 +12,7 @@ jobs:
     strategy:
       matrix:
         # macos-13 is the latest release on x86, and macos-14 is arm64
-        os: [ubuntu-20.04, ubuntu-latest, macos-11, macos-13, macos-14, windows-2019, windows-latest]
+        os: [ubuntu-20.04, ubuntu-latest, macos-13, macos-14, windows-latest]
         python-version: ['3.10', '3.11', '3.12']
       fail-fast: false
     runs-on: ${{ matrix.os }}

From 00a85445174e83e4c415623444d867bf7444dd08 Mon Sep 17 00:00:00 2001
From: JJ Lee <comseong@gmail.com>
Date: Sun, 7 Jun 2026 14:58:59 +0500
Subject: [PATCH 7/9] ci: use macos-14 instead of macos-13 and remove ubuntu
 runners from test matrix

---
 .github/workflows/build.yml | 2 +-
 .github/workflows/test.yml  | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index e30e4ffc0..636d7fcde 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -10,7 +10,7 @@ jobs:
   build:
     strategy:
       matrix:
-        os: [macos-13, windows-2022]
+        os: [macos-14, windows-2022]
       fail-fast: false
     runs-on: ${{ matrix.os }}
     name: Build ${{ matrix.os }}
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index f09c5cc27..f17ec71f1 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -12,7 +12,7 @@ jobs:
     strategy:
       matrix:
         # macos-13 is the latest release on x86, and macos-14 is arm64
-        os: [ubuntu-20.04, ubuntu-latest, macos-13, macos-14, windows-latest]
+        os: [macos-14, windows-latest]
         python-version: ['3.10', '3.11', '3.12']
       fail-fast: false
     runs-on: ${{ matrix.os }}

From a4263d8aa5f8832cb7839dabad10baa2d35241f6 Mon Sep 17 00:00:00 2001
From: JJ Lee <comseong@gmail.com>
Date: Sun, 7 Jun 2026 15:01:46 +0500
Subject: [PATCH 8/9] ci: revert macOS build runner to macos-13 to compile for
 Intel and avoid ARM64 Python 3.8 wheel compatibility errors

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

diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 636d7fcde..e30e4ffc0 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -10,7 +10,7 @@ jobs:
   build:
     strategy:
       matrix:
-        os: [macos-14, windows-2022]
+        os: [macos-13, windows-2022]
       fail-fast: false
     runs-on: ${{ matrix.os }}
     name: Build ${{ matrix.os }}

From 8b1fe02acfba506248d232df9f974787a620392e Mon Sep 17 00:00:00 2001
From: JJ Lee <comseong@gmail.com>
Date: Sun, 7 Jun 2026 15:03:54 +0500
Subject: [PATCH 9/9] ci: upgrade host Python version in build.yml to 3.10 to
 align with local development

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

diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index e30e4ffc0..6792c81ef 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -19,7 +19,7 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@v4
         with:
-          python-version: '3.8'
+          python-version: '3.10'
       - name: Display Python info
         run: |
           python -c "import sys; print(sys.version)"