Merge main

.gitattributes

@@ -5,3 +5,8 @@
 # with CRLF line endings: it fails on the first line. Windows checkouts default
 # to core.autocrlf=true, so keep these LF whatever the platform.
 *.sh text eol=lf
+
+# Batch files are read by cmd.exe, which tracks a byte offset into the file to
+# resume after `call :label`. With LF endings that offset can land wrong and the
+# label lookup fails, so keep these CRLF whatever the platform.
+*.bat text eol=crlf

.github/workflows/build_all.yml

@@ -33,6 +33,8 @@ on:
      - 'build_linux.sh'
      - 'build_release_vs.bat'
      - 'build_release_vs2022.bat'
+     - 'build_win.bat'
+     - 'scripts/test_build_win.ps1'
      - 'build_release_macos.sh'
      - 'scripts/build_preset_cache.*'
      - 'scripts/flatpak/**'
@@ -56,6 +58,22 @@ concurrency:
   
 
 jobs:
+  # build_win.bat ships a test suite. Run it before the Windows builds.
+  check_build_script:
+    name: Windows build script tests
+    runs-on: windows-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v7
+        with:
+          lfs: 'false'
+
+      # Windows PowerShell rather than pwsh: the suite drives build_win.bat
+      # through cmd, and the two differ in how they quote native arguments.
+      - name: Run the build script test suite
+        shell: powershell
+        run: .\scripts\test_build_win.ps1
+
   build_linux:
     strategy:
       fail-fast: false
@@ -81,14 +99,16 @@ jobs:
       # SELF_HOSTED skips arm64 (the self-hosted Windows server is x64-only).
       matrix:
         include: ${{ fromJSON(vars.SELF_HOSTED
-          && '[{"arch":"x64","os":"orca-win-server"}]'
-          || '[{"arch":"x64","os":"windows-latest"},{"arch":"arm64","os":"windows-11-arm"}]') }}
+          && '[{"arch":"x64","os":"orca-win-server","compiler":"clang"}]'
+          || '[{"arch":"x64","os":"windows-latest","compiler":"clang"},{"arch":"arm64","os":"windows-11-arm","compiler":"clang"}]') }}
+    needs: check_build_script
     # Don't run scheduled builds on forks:
-    if: ${{ !cancelled() && (github.event_name != 'schedule' || github.repository == 'OrcaSlicer/OrcaSlicer') }}
+    if: ${{ !cancelled() && needs.check_build_script.result == 'success' && (github.event_name != 'schedule' || github.repository == 'OrcaSlicer/OrcaSlicer') }}
     uses: ./.github/workflows/build_check_cache.yml
     with:
       os: ${{ matrix.os }}
       arch: ${{ matrix.arch }}
+      compiler: ${{ matrix.compiler }}
       build-deps-only: ${{ inputs.build-deps-only || false }}
       force-build: ${{ github.event_name == 'schedule' }}
     secrets: inherit

.github/workflows/build_check_cache.yml

@@ -9,6 +9,10 @@ on:
       arch:
         required: false
         type: string
+      compiler:
+        required: false
+        type: string
+        default: msvc
       build-deps-only:
         required: false
         type: boolean
@@ -33,10 +37,10 @@ jobs:
       - name: set outputs
         id: set_outputs
         env:
-          # Keep macOS/Windows cache keys architecture-specific. amd64 Linux passes
-          # no arch (key stays 'linux-clang', preserving the existing cache);
-          # aarch64 gets its own 'linux-clang-aarch64' key.
-          cache-os: ${{ runner.os == 'macOS' && format('macos-{0}', inputs.arch) || (runner.os == 'Windows' && format('windows-{0}', inputs.arch) || format('linux-clang{0}', inputs.arch && format('-{0}', inputs.arch) || '')) }}
+          # Anything that changes how the tree is built belongs in the key, or a job
+          # restores one it cannot use. Linux amd64 passes no arch deliberately, so
+          # 'linux-clang' keeps the cache it already has.
+          cache-os: ${{ runner.os == 'macOS' && format('macos-{0}', inputs.arch) || (runner.os == 'Windows' && format('windows-{0}-{1}', inputs.arch, inputs.compiler) || format('linux-clang{0}', inputs.arch && format('-{0}', inputs.arch) || '')) }}
           # ARM64 builds use the build-arm64 tree (see build_release_vs.bat); x64/other use build.
           dep-folder-name: ${{ runner.os == 'macOS' && format('/{0}', inputs.arch) || (runner.os == 'Windows' && inputs.arch == 'arm64') && '-arm64/OrcaSlicer_dep' || '/OrcaSlicer_dep' }}
           output-cmd: ${{ runner.os == 'Windows' && '$env:GITHUB_OUTPUT' || '"$GITHUB_OUTPUT"'}}
@@ -62,6 +66,7 @@ jobs:
       valid-cache: ${{ needs.check_cache.outputs.valid-cache == 'true' }}
       os: ${{ inputs.os }}
       arch: ${{ inputs.arch }}
+      compiler: ${{ inputs.compiler }}
       build-deps-only: ${{ inputs.build-deps-only }}
       force-build: ${{ inputs.force-build }}
     secrets: inherit

.github/workflows/build_deps.yml

@@ -16,6 +16,10 @@ on:
       arch:
         required: false
         type: string
+      compiler:
+        required: false
+        type: string
+        default: msvc
       build-deps-only:
         required: false
         type: boolean
@@ -135,11 +139,22 @@ jobs:
               choco install strawberryperl
             }
             $arch = "${{ inputs.arch }}"
+            # -l selects clang-cl and -x Ninja; together they build the deps with clang.
+            $clang = "${{ inputs.compiler }}" -eq "clang"
+            $flags = if ($clang) { "-l", "-x" } else { @() }
+            if ($clang) {
+              # OpenSSL builds with nmake, which needs a VC environment.
+              $vswhere = "${env:ProgramFiles(x86)}\Microsoft Visual Studio\Installer\vswhere.exe"
+              $vs = & $vswhere -latest -property installationPath
+              $devArch = if ($arch -eq "arm64") { "arm64" } else { "amd64" }
+              Import-Module "$vs\Common7\Tools\Microsoft.VisualStudio.DevShell.dll"
+              Enter-VsDevShell -VsInstallPath $vs -SkipAutomaticLocation -DevCmdArguments "-arch=$devArch"
+            }
             if ($arch -eq "arm64") {
-              .\build_release_vs.bat deps arm64
+              .\build_release_vs.bat deps arm64 @flags
               .\build_release_vs.bat pack arm64
             } else {
-              .\build_release_vs.bat deps
+              .\build_release_vs.bat deps @flags
               .\build_release_vs.bat pack
             }
         shell: pwsh
@@ -204,4 +219,5 @@ jobs:
       cache-path: ${{ inputs.cache-path }}
       os: ${{ inputs.os }}
       arch: ${{ inputs.arch }}
+      compiler: ${{ inputs.compiler }}
     secrets: inherit

.github/workflows/build_orca.yml

@@ -13,6 +13,10 @@ on:
         arch:
           required: false
           type: string
+        compiler:
+          required: false
+          type: string
+          default: msvc
         macos-combine-only:
           required: false
           type: boolean
@@ -395,7 +399,18 @@ jobs:
         # "tests" builds the unit tests too; the unit_tests_windows_* jobs run them.
         run: |
           $arch = "${{ inputs.arch }}"
-          if ($arch -eq "arm64") { .\build_release_vs.bat slicer arm64 tests } else { .\build_release_vs.bat slicer tests }
+          # -l selects clang-cl and -x Ninja; together they build the slicer with clang.
+          $clang = "${{ inputs.compiler }}" -eq "clang"
+          $flags = if ($clang) { "-l", "-x" } else { @() }
+          if ($clang) {
+            # Build against the same VC toolchain and SDK as the dependencies.
+            $vswhere = "${env:ProgramFiles(x86)}\Microsoft Visual Studio\Installer\vswhere.exe"
+            $vs = & $vswhere -latest -property installationPath
+            $devArch = if ($arch -eq "arm64") { "arm64" } else { "amd64" }
+            Import-Module "$vs\Common7\Tools\Microsoft.VisualStudio.DevShell.dll"
+            Enter-VsDevShell -VsInstallPath $vs -SkipAutomaticLocation -DevCmdArguments "-arch=$devArch"
+          }
+          if ($arch -eq "arm64") { .\build_release_vs.bat slicer arm64 @flags tests } else { .\build_release_vs.bat slicer @flags tests }
         shell: pwsh
 
       - name: Build system preset cache (Windows)

.gitignore

@@ -1,6 +1,7 @@
 Build
 Build.bat
 /build*/
+/out/
 CMakeLists.txt.user
 CMakeUserPresets.json
 **/CMakeLists.txt.autosave

deps/OCCT/OCCT.cmake

@@ -1,3 +1,10 @@
+# clang-cl cannot emit IGESAppli_GeneralModule.cxx on ARM64
+# (llvm/llvm-project#62081). cl and clang-cl share an ABI.
+set(_occt_compiler_args "")
+if ("${DEPS_ARCH}" STREQUAL "arm64" AND CMAKE_CXX_COMPILER_ID STREQUAL Clang)
+    set(_occt_compiler_args -DCMAKE_C_COMPILER:STRING=cl -DCMAKE_CXX_COMPILER:STRING=cl)
+endif ()
+
 if(WIN32)
     set(library_build_type "Shared")
 else()
@@ -31,6 +38,7 @@ orcaslicer_add_cmake_project(OCCT
         -DBUILD_MODULE_ModelingAlgorithms=OFF
         -DBUILD_MODULE_ModelingData=OFF
         -DBUILD_MODULE_Visualization=OFF
+        ${_occt_compiler_args}
 )
 
 # add_dependencies(dep_OCCT ${FREETYPE_PKG})

deps/OpenCV/OpenCV.cmake

@@ -10,6 +10,13 @@ else ()
     set(_options "")
 endif ()
 
+# carotene is OpenCV's ARM NEON HAL. It uses M_PI without _USE_MATH_DEFINES
+# and does not compile with clang-cl.
+set(_disable_carotene "")
+if ("${DEPS_ARCH}" STREQUAL "arm64" AND CMAKE_CXX_COMPILER_ID STREQUAL Clang)
+    set(_disable_carotene "-DWITH_CAROTENE=OFF")
+endif ()
+
 if (IN_GIT_REPO)
     set(OpenCV_DIRECTORY_FLAG --directory ${BINARY_DIR_REL}/dep_OpenCV-prefix/src/dep_OpenCV)
 endif ()
@@ -83,5 +90,6 @@ orcaslicer_add_cmake_project(OpenCV
        -DWITH_PROTOBUF=OFF
        -DWITH_WIN32UI=OFF
        -DHAVE_WIN32UI=FALSE
+       ${_disable_carotene}
 )
 

deps/OpenSSL/OpenSSL.cmake

@@ -6,7 +6,7 @@ if(DEFINED OPENSSL_ARCH)
     set(_cross_arch ${OPENSSL_ARCH})
 else()
     if(WIN32)
-        if("${CMAKE_GENERATOR_PLATFORM}" STREQUAL "ARM64")
+        if("${DEPS_ARCH}" STREQUAL "arm64")
             set(_cross_arch "VC-WIN64-ARM")
         else()
             set(_cross_arch "VC-WIN64A")

deps/PNG/PNG.cmake

@@ -1,6 +1,10 @@
 if (APPLE)
     # Only disable NEON extension for Apple ARM builds, leave it enabled for Raspberry PI.
     set(_disable_neon_extension "-DPNG_ARM_NEON=off")
+elseif ("${DEPS_ARCH}" STREQUAL "arm64" AND CMAKE_CXX_COMPILER_ID STREQUAL Clang)
+    # libpng's CMake ignores PNG_ARM_NEON on Windows ARM64 and skips the NEON
+    # sources, but pngpriv.h enables NEON anyway.
+    set(_disable_neon_extension "-DCMAKE_C_FLAGS=/DWIN32 /D_WINDOWS /DPNG_ARM_NEON_OPT=0")
 else ()
     set(_disable_neon_extension "")
 endif ()

localization/i18n/OrcaSlicer.pot

@@ -4503,7 +4503,7 @@ msgid ""
 "The value will be reset to 0."
 msgstr ""
 
-msgid "Alternate extra wall does't work well when ensure vertical shell thickness is set to All."
+msgid "Alternate extra wall doesn't work well when ensure vertical shell thickness is set to All."
 msgstr ""
 
 msgid ""
@@ -4534,13 +4534,13 @@ msgid ""
 msgstr ""
 
 msgid ""
-"seam_slope_start_height need to be smaller than layer_height.\n"
+"seam_slope_start_height needs to be smaller than layer_height.\n"
 "Reset to 0."
 msgstr ""
 
 #, no-c-format, no-boost-format
 msgid ""
-"Lock depth should smaller than skin depth.\n"
+"Lock depth should be smaller than skin depth.\n"
 "Reset to 50% of skin depth."
 msgstr ""
 

localization/i18n/ca/OrcaSlicer_ca.po

@@ -4899,7 +4899,7 @@ msgstr ""
 "\n"
 "El valor es restablirà a 0."
 
-msgid "Alternate extra wall does't work well when ensure vertical shell thickness is set to All."
+msgid "Alternate extra wall doesn't work well when ensure vertical shell thickness is set to All."
 msgstr "La paret addicional alternativa no funciona bé quan assegurar el gruix de la closca vertical està establert a Tot."
 
 msgid ""
@@ -4945,7 +4945,7 @@ msgstr ""
 "NO - Mantenir l'alçada de la capa de suport independent"
 
 msgid ""
-"seam_slope_start_height need to be smaller than layer_height.\n"
+"seam_slope_start_height needs to be smaller than layer_height.\n"
 "Reset to 0."
 msgstr ""
 "seam_slope_start_height ha de ser més petit que layer_height.\n"
@@ -4953,7 +4953,7 @@ msgstr ""
 
 #, no-c-format, no-boost-format
 msgid ""
-"Lock depth should smaller than skin depth.\n"
+"Lock depth should be smaller than skin depth.\n"
 "Reset to 50% of skin depth."
 msgstr ""
 "La profunditat de bloqueig ha de ser menor que la profunditat de la pell.\n"

localization/i18n/cs/OrcaSlicer_cs.po

@@ -4857,7 +4857,7 @@ msgstr ""
 "\n"
 "Hodnota bude nastavena na 0."
 
-msgid "Alternate extra wall does't work well when ensure vertical shell thickness is set to All."
+msgid "Alternate extra wall doesn't work well when ensure vertical shell thickness is set to All."
 msgstr "Střídavá přídavná stěna nefunguje správně, pokud je zajištění tloušťky svislé stěny nastaveno na Vše."
 
 msgid ""
@@ -4903,7 +4903,7 @@ msgstr ""
 "NE – Ponechat nezávislou výšku podpůrné vrstvy"
 
 msgid ""
-"seam_slope_start_height need to be smaller than layer_height.\n"
+"seam_slope_start_height needs to be smaller than layer_height.\n"
 "Reset to 0."
 msgstr ""
 "seam_slope_start_height musí být menší než layer_height.\n"
@@ -4911,7 +4911,7 @@ msgstr ""
 
 #, no-c-format, no-boost-format
 msgid ""
-"Lock depth should smaller than skin depth.\n"
+"Lock depth should be smaller than skin depth.\n"
 "Reset to 50% of skin depth."
 msgstr ""
 "Hloubka zamčení musí být menší než hloubka krycí vrstvy.\n"

localization/i18n/de/OrcaSlicer_de.po

@@ -4763,7 +4763,7 @@ msgstr ""
 "\n"
 "Der Wert wird auf 0 zurückgesetzt."
 
-msgid "Alternate extra wall does't work well when ensure vertical shell thickness is set to All."
+msgid "Alternate extra wall doesn't work well when ensure vertical shell thickness is set to All."
 msgstr "Der alternative zusätzliche Wandmodus funktioniert nicht gut, wenn die vertikale Wanddicke auf Alle eingestellt ist."
 
 msgid ""
@@ -4809,7 +4809,7 @@ msgstr ""
 "NEIN - unabhängige Stütz-Schichthöhen beibehalten"
 
 msgid ""
-"seam_slope_start_height need to be smaller than layer_height.\n"
+"seam_slope_start_height needs to be smaller than layer_height.\n"
 "Reset to 0."
 msgstr ""
 "seam_slope_start_height muss kleiner als layer_height sein.\n"
@@ -4817,7 +4817,7 @@ msgstr ""
 
 #, no-c-format, no-boost-format
 msgid ""
-"Lock depth should smaller than skin depth.\n"
+"Lock depth should be smaller than skin depth.\n"
 "Reset to 50% of skin depth."
 msgstr ""
 "Die Verriegelungstiefe sollte kleiner als die Hauttiefe sein.\n"

localization/i18n/en/OrcaSlicer_en.po

@@ -4499,7 +4499,7 @@ msgid ""
 "The value will be reset to 0."
 msgstr ""
 
-msgid "Alternate extra wall does't work well when ensure vertical shell thickness is set to All."
+msgid "Alternate extra wall doesn't work well when ensure vertical shell thickness is set to All."
 msgstr ""
 
 msgid ""
@@ -4530,13 +4530,13 @@ msgid ""
 msgstr ""
 
 msgid ""
-"seam_slope_start_height need to be smaller than layer_height.\n"
+"seam_slope_start_height needs to be smaller than layer_height.\n"
 "Reset to 0."
 msgstr ""
 
 #, no-c-format, no-boost-format
 msgid ""
-"Lock depth should smaller than skin depth.\n"
+"Lock depth should be smaller than skin depth.\n"
 "Reset to 50% of skin depth."
 msgstr ""
 

localization/i18n/es/OrcaSlicer_es.po

@@ -4635,7 +4635,7 @@ msgstr ""
 "\n"
 "El valor se restablecerá a 0."
 
-msgid "Alternate extra wall does't work well when ensure vertical shell thickness is set to All."
+msgid "Alternate extra wall doesn't work well when ensure vertical shell thickness is set to All."
 msgstr "Perímetro adicional alternado no funciona bien cuando \"Garantizar el grosor vertical de las cubiertas\" se establece en Todos."
 
 msgid ""
@@ -4681,7 +4681,7 @@ msgstr ""
 "NO - Mantener la altura de capa de soportes independiente"
 
 msgid ""
-"seam_slope_start_height need to be smaller than layer_height.\n"
+"seam_slope_start_height needs to be smaller than layer_height.\n"
 "Reset to 0."
 msgstr ""
 "seam_slope_start_height debe ser menor que layer_height.\n"
@@ -4689,7 +4689,7 @@ msgstr ""
 
 #, no-c-format, no-boost-format
 msgid ""
-"Lock depth should smaller than skin depth.\n"
+"Lock depth should be smaller than skin depth.\n"
 "Reset to 50% of skin depth."
 msgstr ""
 "La profundidad de bloqueo debe ser menor que la profundidad de piel.\n"

localization/i18n/eu/OrcaSlicer_eu.po

@@ -4676,7 +4676,7 @@ msgstr ""
 "\n"
 "Balioa 0ra berrezarriko da."
 
-msgid "Alternate extra wall does't work well when ensure vertical shell thickness is set to All."
+msgid "Alternate extra wall doesn't work well when ensure vertical shell thickness is set to All."
 msgstr "Horma gehigarri txandakatuak ez du ondo funtzionatzen \"Bermatu oskolaren lodiera bertikala\" Guztiak gisa ezarrita dagoenean."
 
 msgid ""
@@ -4722,7 +4722,7 @@ msgstr ""
 "NO - 'Euskarrien Geruza-Altuera Independentea' mantendu"
 
 msgid ""
-"seam_slope_start_height need to be smaller than layer_height.\n"
+"seam_slope_start_height needs to be smaller than layer_height.\n"
 "Reset to 0."
 msgstr ""
 "seam_slope_start_height txigiagoa izan behar da layer_height baino.\n"
@@ -4730,7 +4730,7 @@ msgstr ""
 
 #, no-c-format, no-boost-format
 msgid ""
-"Lock depth should smaller than skin depth.\n"
+"Lock depth should be smaller than skin depth.\n"
 "Reset to 50% of skin depth."
 msgstr ""
 "Blokeo-sakonera gainazalaren sakonera baino txikiagoa izan behar da.\n"

localization/i18n/fr/OrcaSlicer_fr.po

@@ -15,7 +15,7 @@ msgstr ""
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
 "Plural-Forms: nplurals=2; plural=(n==0 || n==1) ? 0 : 1;\n"
-"X-Generator: Poedit 3.6\n"
+"X-Generator: Poedit 3.9\n"
 
 # AI Translated
 msgid "Main Extruder"
@@ -4713,7 +4713,7 @@ msgstr ""
 "\n"
 "La valeur sera remise à 0."
 
-msgid "Alternate extra wall does't work well when ensure vertical shell thickness is set to All."
+msgid "Alternate extra wall doesn't work well when ensure vertical shell thickness is set to All."
 msgstr "La paroi supplémentaire alternée ne fonctionne pas bien lorsque le paramètre Assurer l’épaisseur de la coque verticale est réglée sur Tous."
 
 msgid ""
@@ -4759,7 +4759,7 @@ msgstr ""
 "NON - Conserver la hauteur de la couche de support indépendante"
 
 msgid ""
-"seam_slope_start_height need to be smaller than layer_height.\n"
+"seam_slope_start_height needs to be smaller than layer_height.\n"
 "Reset to 0."
 msgstr ""
 "seam_slope_start_height doit être inférieur à la hauteur de couche.\n"
@@ -4767,7 +4767,7 @@ msgstr ""
 
 #, no-c-format, no-boost-format
 msgid ""
-"Lock depth should smaller than skin depth.\n"
+"Lock depth should be smaller than skin depth.\n"
 "Reset to 50% of skin depth."
 msgstr ""
 "La profondeur de verrouillage doit être inférieure à la profondeur de la peau.\n"
@@ -10839,7 +10839,7 @@ msgid "Acceleration limitation"
 msgstr "Limitation d'accélération"
 
 msgid "Jerk limitation"
-msgstr "Limitation des secousses"
+msgstr "Limitation du jerk"
 
 msgid "Single extruder multi-material setup"
 msgstr "Configuration multi-matériaux pour extrudeur unique"
@@ -12343,7 +12343,7 @@ msgid "Plate %d: %s does not support filament %s"
 msgstr "Plaque %d : %s ne prend pas en charge le filament %s"
 
 msgid "Setting the jerk speed too low could lead to artifacts on curved surfaces"
-msgstr "Un réglage trop bas de la vitesse de saccade peut entraîner des artefacts sur les surfaces courbes"
+msgstr "Un réglage trop bas de la vitesse de jerk peut entraîner des artefacts sur les surfaces courbes"
 
 msgid ""
 "The jerk setting exceeds the printer's maximum jerk (machine_max_jerk_x/machine_max_jerk_y).\n"
@@ -12351,7 +12351,7 @@ msgid ""
 "You can adjust the maximum jerk setting in your printer's configuration to get higher speeds."
 msgstr ""
 "Le réglage du jerk dépasse le jerk maximum de l’imprimante (machine_max_jerk_x/machine_max_jerk_y).\n"
-"Orca plafonne automatiquement la vitesse de l’impulsion pour s’assurer qu’elle ne dépasse pas les capacités de l’imprimante.\n"
+"Orca plafonne automatiquement la vitesse du jerk pour s’assurer qu’elle ne dépasse pas les capacités de l’imprimante.\n"
 "Vous pouvez ajuster le réglage du jerk maximum dans la configuration de votre imprimante pour obtenir des vitesses plus élevées."
 
 msgid ""
@@ -21356,8 +21356,7 @@ msgstr ""
 "Divisez vos impressions en plateaux\n"
 "Saviez-vous que vous pouvez diviser un modèle comportant de nombreuses pièces en plateaux individuels prêts à être imprimés ? Cela simplifie le processus de suivi de toutes les pièces."
 
-#: resources/data/hints.ini: [hint:Speed up your print with Adaptive Layer
-#: Height]
+#: resources/data/hints.ini: [hint:Speed up your print with Adaptive Layer Height]
 msgid ""
 "Speed up your print with Adaptive Layer Height\n"
 "Did you know that you can print a model even faster by using the Adaptive Layer Height option? Check it out!"
@@ -21429,8 +21428,7 @@ msgstr ""
 "Améliorer la solidité\n"
 "Saviez-vous que vous pouvez définir un plus grand nombre de périmètre et une densité de remplissage plus élevée pour améliorer la résistance du modèle ?"
 
-#: resources/data/hints.ini: [hint:When do you need to print with the printer
-#: door opened]
+#: resources/data/hints.ini: [hint:When do you need to print with the printer door opened]
 msgid ""
 "When do you need to print with the printer door opened?\n"
 "Did you know that opening the printer door can reduce the probability of extruder/hotend clogging when printing lower temperature filament with a higher enclosure temperature? There is more info about this in the Wiki."

localization/i18n/hu/OrcaSlicer_hu.po

@@ -4809,7 +4809,7 @@ msgstr ""
 "\n"
 "Az érték 0-ra áll vissza."
 
-msgid "Alternate extra wall does't work well when ensure vertical shell thickness is set to All."
+msgid "Alternate extra wall doesn't work well when ensure vertical shell thickness is set to All."
 msgstr "A váltakozó extra fal nem működik jól, ha a függőleges héjvastagság biztosítása \"Mind\" értékre van állítva."
 
 msgid ""
@@ -4855,7 +4855,7 @@ msgstr ""
 "NEM - Független támasz rétegmagasság megtartása"
 
 msgid ""
-"seam_slope_start_height need to be smaller than layer_height.\n"
+"seam_slope_start_height needs to be smaller than layer_height.\n"
 "Reset to 0."
 msgstr ""
 "A seam_slope_start_height értékének kisebbnek kell lennie, mint a layer_height.\n"
@@ -4863,7 +4863,7 @@ msgstr ""
 
 #, no-c-format, no-boost-format
 msgid ""
-"Lock depth should smaller than skin depth.\n"
+"Lock depth should be smaller than skin depth.\n"
 "Reset to 50% of skin depth."
 msgstr ""
 "A rögzítési mélységnek kisebbnek kell lennie, mint a felületi réteg mélysége.\n"

localization/i18n/it/OrcaSlicer_it.po

@@ -4811,7 +4811,7 @@ msgstr ""
 "\n"
 "Il valore verrà reimpostato a 0."
 
-msgid "Alternate extra wall does't work well when ensure vertical shell thickness is set to All."
+msgid "Alternate extra wall doesn't work well when ensure vertical shell thickness is set to All."
 msgstr "Parete aggiuntiva alternativa non funziona bene quando \"Garantisci spessore verticale del guscio\" è impostato su Tutto."
 
 msgid ""
@@ -4857,7 +4857,7 @@ msgstr ""
 "NO - Mantieni Altezza strato di supporto indipendente"
 
 msgid ""
-"seam_slope_start_height need to be smaller than layer_height.\n"
+"seam_slope_start_height needs to be smaller than layer_height.\n"
 "Reset to 0."
 msgstr ""
 "seam_slope_start_height deve essere inferiore a layer_height.\n"
@@ -4865,7 +4865,7 @@ msgstr ""
 
 #, no-c-format, no-boost-format
 msgid ""
-"Lock depth should smaller than skin depth.\n"
+"Lock depth should be smaller than skin depth.\n"
 "Reset to 50% of skin depth."
 msgstr ""
 "La profondità di intersezione deve essere inferiore alla profondità della pelle.\n"

localization/i18n/ja/OrcaSlicer_ja.po

@@ -4824,7 +4824,7 @@ msgstr ""
 "\n"
 "値は0にリセットされます。"
 
-msgid "Alternate extra wall does't work well when ensure vertical shell thickness is set to All."
+msgid "Alternate extra wall doesn't work well when ensure vertical shell thickness is set to All."
 msgstr "垂直シェル厚さを「すべて」に設定すると、交互追加壁が適切に機能しません。"
 
 msgid ""
@@ -4870,7 +4870,7 @@ msgstr ""
 "いいえ - 「独立サポート積層ピッチ」を有効にする"
 
 msgid ""
-"seam_slope_start_height need to be smaller than layer_height.\n"
+"seam_slope_start_height needs to be smaller than layer_height.\n"
 "Reset to 0."
 msgstr ""
 "seam_slope_start_heightはlayer_heightより小さくする必要があります。\n"
@@ -4878,7 +4878,7 @@ msgstr ""
 
 #, no-c-format, no-boost-format
 msgid ""
-"Lock depth should smaller than skin depth.\n"
+"Lock depth should be smaller than skin depth.\n"
 "Reset to 50% of skin depth."
 msgstr ""
 "ロック深さはスキン深さより小さくする必要があります。\n"
@@ -10749,7 +10749,7 @@ msgid "Junction Deviation"
 msgstr "接合偏差"
 
 msgid "Jerk(XY)"
-msgstr "ジャーク(XY)"
+msgstr "Jerk(XY)"
 
 msgid "Raft"
 msgstr "ラフト"
@@ -11046,7 +11046,7 @@ msgid "Acceleration limitation"
 msgstr "加速制限"
 
 msgid "Jerk limitation"
-msgstr "振動特性"
+msgstr "Jerk制限"
 
 msgid "Single extruder multi-material setup"
 msgstr "シングルエクストルーダー マルチマテリアル設定"
@@ -12596,7 +12596,7 @@ msgid "Plate %d: %s does not support filament %s"
 msgstr "プレート %d: %s がフィラメント %s を使用できません"
 
 msgid "Setting the jerk speed too low could lead to artifacts on curved surfaces"
-msgstr "ジャーク速度を低く設定しすぎると曲面にアーティファクトが発生する可能性があります"
+msgstr "Jerk速度を低く設定しすぎると曲面にアーティファクトが発生する可能性があります"
 
 # AI Translated
 msgid ""
@@ -14903,7 +14903,7 @@ msgid "Klipper's max_accel_to_decel will be adjusted to this %% of acceleration.
 msgstr "Klipperのmax_accel_to_decelが、加速度のこの%%に調整されます。"
 
 msgid "Default jerk."
-msgstr "デフォルトジャーク。"
+msgstr "デフォルトのJerkです。"
 
 # AI Translated
 msgid "Marlin Firmware Junction Deviation (replaces the traditional XY Jerk setting)."
@@ -15994,28 +15994,28 @@ msgid "Maximum acceleration of the E axis"
 msgstr "E軸最大加速度"
 
 msgid "Maximum jerk X"
-msgstr "最大振動 X"
+msgstr "最大Jerk X"
 
 msgid "Maximum jerk Y"
-msgstr "最大振動 Y"
+msgstr "最大Jerk Y"
 
 msgid "Maximum jerk Z"
-msgstr "最大振動 Z"
+msgstr "最大Jerk Z"
 
 msgid "Maximum jerk E"
-msgstr "最大振動 E"
+msgstr "最大Jerk E"
 
 msgid "Maximum jerk of the X axis"
-msgstr "最大振動 X"
+msgstr "X軸最大Jerk"
 
 msgid "Maximum jerk of the Y axis"
-msgstr "最大振動 Y"
+msgstr "Y軸最大Jerk"
 
 msgid "Maximum jerk of the Z axis"
-msgstr "最大振動 Z"
+msgstr "Z軸最大Jerk"
 
 msgid "Maximum jerk of the E axis"
-msgstr "最大振動 E"
+msgstr "E軸最大Jerk"
 
 msgid "Maximum Junction Deviation"
 msgstr "最大接合偏差"

localization/i18n/ko/OrcaSlicer_ko.po

@@ -4835,7 +4835,7 @@ msgstr ""
 "\n"
 "값이 0으로 재설정됩니다."
 
-msgid "Alternate extra wall does't work well when ensure vertical shell thickness is set to All."
+msgid "Alternate extra wall doesn't work well when ensure vertical shell thickness is set to All."
 msgstr "세로 쉘 두께가 모두로 설정된 경우 대체 여분의 벽이 제대로 작동하지 않습니다."
 
 msgid ""
@@ -4881,7 +4881,7 @@ msgstr ""
 "아니요 - 독립적 서포트 레이어 높이 유지"
 
 msgid ""
-"seam_slope_start_height need to be smaller than layer_height.\n"
+"seam_slope_start_height needs to be smaller than layer_height.\n"
 "Reset to 0."
 msgstr ""
 "심_경사_시작_높이는 레이어_높이보다 작아야 합니다.\n"
@@ -4889,7 +4889,7 @@ msgstr ""
 
 #, no-c-format, no-boost-format
 msgid ""
-"Lock depth should smaller than skin depth.\n"
+"Lock depth should be smaller than skin depth.\n"
 "Reset to 50% of skin depth."
 msgstr ""
 "잠금 깊이는 스킨 깊이보다 작아야 합니다.\n"

localization/i18n/lt/OrcaSlicer_lt.po

@@ -4798,7 +4798,7 @@ msgstr ""
 "\n"
 "Reikšmė bus atstatyta į 0."
 
-msgid "Alternate extra wall does't work well when ensure vertical shell thickness is set to All."
+msgid "Alternate extra wall doesn't work well when ensure vertical shell thickness is set to All."
 msgstr "Alternatyvi papildoma sienelė veikia prastai, kai vertikalaus apvalkalo storio užtikrinimas nustatytas į „Visi“."
 
 msgid ""
@@ -4844,7 +4844,7 @@ msgstr ""
 "NE – palikti nepriklausomą atramų sluoksnio aukštį"
 
 msgid ""
-"seam_slope_start_height need to be smaller than layer_height.\n"
+"seam_slope_start_height needs to be smaller than layer_height.\n"
 "Reset to 0."
 msgstr ""
 "„seam_slope_start_height“ turi būti mažesnis už „layer_height“\n"
@@ -4852,7 +4852,7 @@ msgstr ""
 
 #, no-c-format, no-boost-format
 msgid ""
-"Lock depth should smaller than skin depth.\n"
+"Lock depth should be smaller than skin depth.\n"
 "Reset to 50% of skin depth."
 msgstr ""
 "Fiksavimo gylis turėtų būti mažesnis už išorinio sluoksnio gylį.\n"

localization/i18n/nl/OrcaSlicer_nl.po

@@ -5223,7 +5223,7 @@ msgstr ""
 "De waarde wordt teruggezet naar 0."
 
 # AI Translated
-msgid "Alternate extra wall does't work well when ensure vertical shell thickness is set to All."
+msgid "Alternate extra wall doesn't work well when ensure vertical shell thickness is set to All."
 msgstr "Afwisselende extra wand werkt niet goed wanneer 'verticale wanddikte waarborgen' op Alles is ingesteld."
 
 # AI Translated
@@ -5271,7 +5271,7 @@ msgstr ""
 
 # AI Translated
 msgid ""
-"seam_slope_start_height need to be smaller than layer_height.\n"
+"seam_slope_start_height needs to be smaller than layer_height.\n"
 "Reset to 0."
 msgstr ""
 "seam_slope_start_height moet kleiner zijn dan layer_height.\n"
@@ -5280,7 +5280,7 @@ msgstr ""
 # AI Translated
 #, no-c-format, no-boost-format
 msgid ""
-"Lock depth should smaller than skin depth.\n"
+"Lock depth should be smaller than skin depth.\n"
 "Reset to 50% of skin depth."
 msgstr ""
 "De vergrendeldiepte moet kleiner zijn dan de huiddiepte.\n"

localization/i18n/pl/OrcaSlicer_pl.po

@@ -4913,7 +4913,7 @@ msgstr ""
 "\n"
 "Wartość zostanie zresetowana do 0."
 
-msgid "Alternate extra wall does't work well when ensure vertical shell thickness is set to All."
+msgid "Alternate extra wall doesn't work well when ensure vertical shell thickness is set to All."
 msgstr "Alternatywna dodatkowa ściana działa tylko wtedy, gdy jest wyłączona opcja „zapewnij stałą grubość pionowej powłoki”."
 
 msgid ""
@@ -4959,7 +4959,7 @@ msgstr ""
 "NIE  - Zachowaj Niezależną wysokość warstwy podpory"
 
 msgid ""
-"seam_slope_start_height need to be smaller than layer_height.\n"
+"seam_slope_start_height needs to be smaller than layer_height.\n"
 "Reset to 0."
 msgstr ""
 "seam_slope_start_height musi być mniejsza niż wysokość warstwy.\n"
@@ -4968,7 +4968,7 @@ msgstr ""
 # AI Translated
 #, no-c-format, no-boost-format
 msgid ""
-"Lock depth should smaller than skin depth.\n"
+"Lock depth should be smaller than skin depth.\n"
 "Reset to 50% of skin depth."
 msgstr ""
 "Głębokość blokady powinna być mniejsza niż głębokość skóry.\n"

localization/i18n/pt_BR/OrcaSlicer_pt_BR.po

@@ -4647,7 +4647,7 @@ msgstr ""
 "\n"
 "O valor será redefinido para 0."
 
-msgid "Alternate extra wall does't work well when ensure vertical shell thickness is set to All."
+msgid "Alternate extra wall doesn't work well when ensure vertical shell thickness is set to All."
 msgstr "A parede extra alternada não funciona bem quando a espessura vertical da casca está definida para Todos."
 
 msgid ""
@@ -4693,7 +4693,7 @@ msgstr ""
 "NÃO — Manter a Altura da Camada de Suporte Independente"
 
 msgid ""
-"seam_slope_start_height need to be smaller than layer_height.\n"
+"seam_slope_start_height needs to be smaller than layer_height.\n"
 "Reset to 0."
 msgstr ""
 "seam_slope_start_height precisa ser menor que layer_height.\n"
@@ -4701,7 +4701,7 @@ msgstr ""
 
 #, no-c-format, no-boost-format
 msgid ""
-"Lock depth should smaller than skin depth.\n"
+"Lock depth should be smaller than skin depth.\n"
 "Reset to 50% of skin depth."
 msgstr ""
 "A profundidade do travamento deve ser menor que a profundidade da textura.\n"

localization/i18n/ru/OrcaSlicer_ru.po

@@ -4786,7 +4786,7 @@ msgstr ""
 "\n"
 "Значение будет сброшено до 0."
 
-msgid "Alternate extra wall does't work well when ensure vertical shell thickness is set to All."
+msgid "Alternate extra wall doesn't work well when ensure vertical shell thickness is set to All."
 msgstr "Чередующаяся дополнительная стенка не работает, если для «Сохранение толщины вертикальной оболочки» установлено значение «Все»."
 
 msgid ""
@@ -4839,7 +4839,7 @@ msgstr ""
 "Нет – отключить черновую башню"
 
 msgid ""
-"seam_slope_start_height need to be smaller than layer_height.\n"
+"seam_slope_start_height needs to be smaller than layer_height.\n"
 "Reset to 0."
 msgstr ""
 "Начальная высота не должна превышать высоту слоя.\n"
@@ -4847,7 +4847,7 @@ msgstr ""
 
 #, no-c-format, no-boost-format
 msgid ""
-"Lock depth should smaller than skin depth.\n"
+"Lock depth should be smaller than skin depth.\n"
 "Reset to 50% of skin depth."
 msgstr ""
 "Перекрытие должно быть меньше внутренней оболочки.\n"

localization/i18n/sv/OrcaSlicer_sv.po

@@ -5285,7 +5285,7 @@ msgstr ""
 "Värdet kommer att återställas till 0."
 
 # AI Translated
-msgid "Alternate extra wall does't work well when ensure vertical shell thickness is set to All."
+msgid "Alternate extra wall doesn't work well when ensure vertical shell thickness is set to All."
 msgstr "Alternerande extra vägg fungerar inte bra när säkerställ vertikal skaltjocklek är inställt på Alla."
 
 # AI Translated
@@ -5333,7 +5333,7 @@ msgstr ""
 
 # AI Translated
 msgid ""
-"seam_slope_start_height need to be smaller than layer_height.\n"
+"seam_slope_start_height needs to be smaller than layer_height.\n"
 "Reset to 0."
 msgstr ""
 "seam_slope_start_height måste vara mindre än layer_height.\n"
@@ -5342,7 +5342,7 @@ msgstr ""
 # AI Translated
 #, no-c-format, no-boost-format
 msgid ""
-"Lock depth should smaller than skin depth.\n"
+"Lock depth should be smaller than skin depth.\n"
 "Reset to 50% of skin depth."
 msgstr ""
 "Låsdjupet bör vara mindre än ytskiktets djup.\n"

localization/i18n/th/OrcaSlicer_th.po

@@ -4791,7 +4791,7 @@ msgstr ""
 "\n"
 "ค่าจะถูกรีเซ็ตเป็น 0"
 
-msgid "Alternate extra wall does't work well when ensure vertical shell thickness is set to All."
+msgid "Alternate extra wall doesn't work well when ensure vertical shell thickness is set to All."
 msgstr "ผนังเสริมสำรองทำงานได้ไม่ดีเมื่อตั้งค่าความหนาของเปลือกแนวตั้งเป็นทั้งหมด"
 
 msgid ""
@@ -4837,7 +4837,7 @@ msgstr ""
 "ไม่ - รักษาความสูงของชั้นรองรับที่เป็นอิสระ"
 
 msgid ""
-"seam_slope_start_height need to be smaller than layer_height.\n"
+"seam_slope_start_height needs to be smaller than layer_height.\n"
 "Reset to 0."
 msgstr ""
 "seam_slope_start_height ต้องเล็กกว่า layer_height\n"
@@ -4845,7 +4845,7 @@ msgstr ""
 
 #, no-c-format, no-boost-format
 msgid ""
-"Lock depth should smaller than skin depth.\n"
+"Lock depth should be smaller than skin depth.\n"
 "Reset to 50% of skin depth."
 msgstr ""
 "ความลึกของล็อคควรน้อยกว่าความลึกของผิวหนัง\n"

localization/i18n/tr/OrcaSlicer_tr.po

@@ -4853,7 +4853,7 @@ msgstr ""
 "\n"
 "Değer 0'a sıfırlanacaktır."
 
-msgid "Alternate extra wall does't work well when ensure vertical shell thickness is set to All."
+msgid "Alternate extra wall doesn't work well when ensure vertical shell thickness is set to All."
 msgstr "Alternatif ekstra duvar, dikey kabuk kalınlığının Tümü olarak ayarlandığından emin olunduğunda iyi çalışmaz."
 
 msgid ""
@@ -4899,7 +4899,7 @@ msgstr ""
 "HAYIR - Bağımsız Destek Katmanı Yüksekliğini Koruyun"
 
 msgid ""
-"seam_slope_start_height need to be smaller than layer_height.\n"
+"seam_slope_start_height needs to be smaller than layer_height.\n"
 "Reset to 0."
 msgstr ""
 "seam_slope_start_height, layer_height değerinden küçük olmalıdır.\n"
@@ -4907,7 +4907,7 @@ msgstr ""
 
 #, no-c-format, no-boost-format
 msgid ""
-"Lock depth should smaller than skin depth.\n"
+"Lock depth should be smaller than skin depth.\n"
 "Reset to 50% of skin depth."
 msgstr ""
 "Kilit derinliği cilt derinliğinden daha küçük olmalıdır.\n"

localization/i18n/uk/OrcaSlicer_uk.po

@@ -4787,7 +4787,7 @@ msgstr ""
 "\n"
 "Значення буде скинуто на 0."
 
-msgid "Alternate extra wall does't work well when ensure vertical shell thickness is set to All."
+msgid "Alternate extra wall doesn't work well when ensure vertical shell thickness is set to All."
 msgstr "Чергування додаткової стінки не працює добре, якщо для параметра \"Забезпечити товщину вертикальної оболонки\" встановлено значення \"Всі\"."
 
 msgid ""
@@ -4833,7 +4833,7 @@ msgstr ""
 "НІ - Залишити незалежну висоту шарів підтримки"
 
 msgid ""
-"seam_slope_start_height need to be smaller than layer_height.\n"
+"seam_slope_start_height needs to be smaller than layer_height.\n"
 "Reset to 0."
 msgstr ""
 "seam_slope_start_height має бути менше висоти шару.\n"
@@ -4842,7 +4842,7 @@ msgstr ""
 # AI Translated
 #, no-c-format, no-boost-format
 msgid ""
-"Lock depth should smaller than skin depth.\n"
+"Lock depth should be smaller than skin depth.\n"
 "Reset to 50% of skin depth."
 msgstr ""
 "Глибина зчеплення має бути меншою за глибину оболонки.\n"

localization/i18n/vi/OrcaSlicer_vi.po

@@ -5046,7 +5046,7 @@ msgstr ""
 "\n"
 "Giá trị sẽ được đặt lại về 0."
 
-msgid "Alternate extra wall does't work well when ensure vertical shell thickness is set to All."
+msgid "Alternate extra wall doesn't work well when ensure vertical shell thickness is set to All."
 msgstr "Luân phiên wall phụ không hoạt động tốt khi đảm bảo độ dày shell dọc được đặt thành Tất cả."
 
 msgid ""
@@ -5092,7 +5092,7 @@ msgstr ""
 "NO  - Giữ chiều cao lớp support độc lập"
 
 msgid ""
-"seam_slope_start_height need to be smaller than layer_height.\n"
+"seam_slope_start_height needs to be smaller than layer_height.\n"
 "Reset to 0."
 msgstr ""
 "seam_slope_start_height cần nhỏ hơn layer_height.\n"
@@ -5100,7 +5100,7 @@ msgstr ""
 
 #, no-c-format, no-boost-format
 msgid ""
-"Lock depth should smaller than skin depth.\n"
+"Lock depth should be smaller than skin depth.\n"
 "Reset to 50% of skin depth."
 msgstr ""
 "Độ sâu khóa phải nhỏ hơn độ sâu skin.\n"

localization/i18n/zh_CN/OrcaSlicer_zh_CN.po

@@ -4647,7 +4647,7 @@ msgstr ""
 "\n"
 "这个数值将被重置为0。"
 
-msgid "Alternate extra wall does't work well when ensure vertical shell thickness is set to All."
+msgid "Alternate extra wall doesn't work well when ensure vertical shell thickness is set to All."
 msgstr "“交替添加额外”与“确保垂直外壳厚度”的”全部“选项不兼容。"
 
 msgid ""
@@ -4693,7 +4693,7 @@ msgstr ""
 "否 - 选择保留支撑独立层高"
 
 msgid ""
-"seam_slope_start_height need to be smaller than layer_height.\n"
+"seam_slope_start_height needs to be smaller than layer_height.\n"
 "Reset to 0."
 msgstr ""
 "seam_slope_start_height需要小于layer_height。\n"
@@ -4701,7 +4701,7 @@ msgstr ""
 
 #, no-c-format, no-boost-format
 msgid ""
-"Lock depth should smaller than skin depth.\n"
+"Lock depth should be smaller than skin depth.\n"
 "Reset to 50% of skin depth."
 msgstr ""
 "锁定深度应小于表皮深度。\n"

localization/i18n/zh_TW/OrcaSlicer_zh_TW.po

@@ -4764,7 +4764,7 @@ msgstr ""
 "\n"
 "該值將會重設為 0。"
 
-msgid "Alternate extra wall does't work well when ensure vertical shell thickness is set to All."
+msgid "Alternate extra wall doesn't work well when ensure vertical shell thickness is set to All."
 msgstr "當確保垂直外殼厚度設為『全部』時，交錯額外牆壁效果不佳。"
 
 msgid ""
@@ -4821,7 +4821,7 @@ msgstr ""
 "否 - 選擇保留獨立支撐層高"
 
 msgid ""
-"seam_slope_start_height need to be smaller than layer_height.\n"
+"seam_slope_start_height needs to be smaller than layer_height.\n"
 "Reset to 0."
 msgstr ""
 "seam_slope_start_height 必須小於 layer_height。\n"
@@ -4830,7 +4830,7 @@ msgstr ""
 
 #, no-c-format, no-boost-format
 msgid ""
-"Lock depth should smaller than skin depth.\n"
+"Lock depth should be smaller than skin depth.\n"
 "Reset to 50% of skin depth."
 msgstr ""
 "鎖定深度應小於表皮深度。\n"

scripts/test_build_win.ps1

@@ -0,0 +1,847 @@
+<#
+.SYNOPSIS
+    Tests build_win.bat's option handling and the commands it generates.
+
+.DESCRIPTION
+    Cases run the script with --dry-run, so nothing is configured, built or
+    deleted and the suite finishes in seconds. Each case asserts on the exit
+    code and on the command lines the script echoes.
+
+    Adding a case means adding one row to $cases. A bare string starts a new
+    group. Defaults: ExpectExit is 0 and --dry-run is appended, so a row only
+    states what is unusual about it.
+
+        Name        what the case proves, in words
+        Args        arguments, as an array
+        ExpectExit  expected exit code            (default 0)
+        DryRun      append --dry-run              (default $true)
+        First       regex the first output line must match
+        Env         environment for this case only
+        Contains    literal strings the output must have
+        NotContains literal strings it must not have
+        Match       regexes; each must match at least one output line
+        NotMatch    regexes; none may match any output line
+        NotExists   paths that must not exist after the case runs
+
+.PARAMETER Name
+    Run only the cases whose name matches this regex. Headings with no
+    matching case are not printed, and a pattern that matches nothing is a
+    failure rather than an empty pass.
+
+.EXAMPLE
+    powershell -File scripts/test_build_win.ps1
+
+.EXAMPLE
+    powershell -File scripts/test_build_win.ps1 -Name solution
+#>
+[CmdletBinding()]
+param(
+    [string] $Script,
+    [string] $Name
+)
+
+$ErrorActionPreference = 'Stop'
+
+if (-not $Script) {
+    $here = $PSScriptRoot
+    if (-not $here) { $here = Split-Path -Parent $MyInvocation.MyCommand.Path }
+    $Script = Join-Path (Split-Path -Parent $here) 'build_win.bat'
+}
+if (-not (Test-Path $Script)) { throw "build_win.bat not found at $Script" }
+
+# cmd resumes a batch file by byte offset after `call :label`, and with LF
+# endings that offset lands wrong and the label lookup fails. .gitattributes
+# pins CRLF; this catches a checkout or an editor that did not honour it.
+if ((Get-Content -Raw $Script) -match "(?<!`r)`n") {
+    throw "$Script has LF line endings; cmd needs CRLF to resume after call :label"
+}
+$Script = (Resolve-Path $Script).Path
+
+# Read the long options out of the script itself, so this cannot go stale when
+# an option is added. Field order is: add_arg <var> <type> <short> <long>.
+$longFlags = @(
+    Select-String -Path $Script -Pattern '^call :add_arg \S+ \S+ \S+ (\S+) ' |
+        ForEach-Object { '--' + $_.Matches[0].Groups[1].Value }
+)
+if ($longFlags.Count -lt 20) { throw "only found $($longFlags.Count) options in $Script; the parser above is wrong" }
+
+# A winget that always fails, so the prerequisite failure path runs without
+# touching the machine. It has to be an .exe: a .bat invoked without `call`
+# transfers control and never comes back, which would end the script instead.
+# where.exe returns 1 when its patterns match nothing and never prompts.
+$fixtures = Join-Path ([IO.Path]::GetTempPath()) 'build_win_test_fixtures'
+New-Item -ItemType Directory -Force -Path $fixtures | Out-Null
+Copy-Item "$env:SystemRoot\System32\where.exe" (Join-Path $fixtures 'winget.exe') -Force
+$stubPath = "$fixtures;C:\Windows\system32;C:\Windows"
+
+# Stand-in ninjas that only report a version, so the 1.12 boundary in the
+# progress format can be exercised on a machine whose real ninja is newer.
+# A dry run skips the dev shell, so PATH here is what the script sees.
+$ninjaPaths = @{}
+foreach ($v in @{ old = '1.11.1'; new = '1.12.0' }.GetEnumerator()) {
+    $d = Join-Path $fixtures "ninja-$($v.Key)"
+    New-Item -ItemType Directory -Force -Path $d | Out-Null
+    Set-Content -Path (Join-Path $d 'ninja.bat') -Encoding ascii -Value @('@echo off', "echo $($v.Value)")
+    $ninjaPaths[$v.Key] = "$d;$env:PATH"
+}
+
+# The pack stamp is checked against real dates, so a locale-dependent parse
+# in the script cannot pass by looking date-shaped. Yesterday is accepted too,
+# so a run that crosses midnight does not flake.
+$dateStamps = @((Get-Date -Format 'yyyyMMdd'), (Get-Date).AddDays(-1).ToString('yyyyMMdd'))
+$stampPattern = '_(' + ($dateStamps -join '|') + ')\.zip$'
+
+$cases = @(
+    'argument handling'
+    @{ Name = 'no arguments prints help'; Args = @(); DryRun = $false
+       Contains = @('Usage: build_win.bat [options]', '--clang-cl') }
+    @{ Name = "--help lists all $($longFlags.Count) options the script defines"; Args = @('--help'); DryRun = $false
+       Contains = $longFlags }
+    @{ Name = 'help is grouped and shows usage, examples and environment'; Args = @('--help'); DryRun = $false
+       Contains = @('Usage: build_win.bat [options]', 'Actions:', 'Build configuration:', 'Toolchain:',
+                    'How much gets rebuilt:', 'Paths and extra arguments:', 'Diagnostics:',
+                    'Examples:', 'Environment:')  }
+    @{ Name = 'the environment section shows what to set'; Args = @('--help'); DryRun = $false
+       Contains = @('ORCA_DEPS_CMAKE_ARGS', 'ORCA_SLICER_CMAKE_ARGS', 'ORCA_UPDATER_SIG_KEY', 'NINJA_STATUS',
+                    'set ORCA_SLICER_CMAKE_ARGS=-DSLIC3R_PCH=OFF', '(PowerShell)', 'debugscript') }
+    @{ Name = 'section headers do not widen the flag column'; Args = @('--help'); DryRun = $false
+       Match = @('^   -d, --deps  +Download') }
+    # Windows Terminal opens at 120 columns and wraps at 120, so 119 is the
+    # limit. Anyone still on the old conhost gets 80 and will see wrapping.
+    @{ Name = 'every help line fits a 120 column console'; Args = @('--help'); DryRun = $false
+       NotMatch = @('^.{120,}$') }
+    @{ Name = 'an unknown long option is rejected'; Args = @('--nonsense'); ExpectExit = 1
+       Contains = @('Failed to find arg') }
+    @{ Name = 'an unknown short option is rejected'; Args = @('-Z'); ExpectExit = 1
+       Contains = @('Failed to find arg') }
+    @{ Name = 'a bare argument is rejected'; Args = @('deps'); ExpectExit = 1
+       Contains = @('Unknown argument') }
+    @{ Name = 'an unknown architecture is rejected'; Args = @('-d', '--arch', 'sparc'); ExpectExit = 1
+       Contains = @('Unknown architecture') }
+    @{ Name = 'a string option without a value is rejected'; Args = @('-d', '--arch'); ExpectExit = 1
+       Contains = @('requires a value') }
+    @{ Name = 'short options can be bundled'; Args = @('-dx')
+       Contains = @('-G "Ninja Multi-Config"', '--target deps') }
+
+    'generator and compiler selection'
+    @{ Name = 'deps default to the Visual Studio generator'; Args = @('-d')
+       Contains = @('-G "Visual Studio', '-A x64', '--target deps')
+       NotContains = @('Ninja', 'clang-cl') }
+    @{ Name = '-x selects Ninja without changing compiler'; Args = @('-d', '-x')
+       Contains = @('-G "Ninja Multi-Config"')
+       NotContains = @('clang-cl', '-A x64') }
+    @{ Name = '-l -x builds with clang-cl under Ninja'; Args = @('-d', '-l', '-x')
+       Contains = @('-G "Ninja Multi-Config"', '-DCMAKE_C_COMPILER=clang-cl.exe', '-DCMAKE_CXX_COMPILER=clang-cl.exe') }
+    @{ Name = '-l alone uses the ClangCL toolset on the VS generator'; Args = @('-d', '-l')
+       Contains = @('-G "Visual Studio', '-T ClangCL')
+       NotContains = @('-DCMAKE_C_COMPILER') }
+    # --msvc and --msbuild name the defaults, so a caller can be explicit and a
+    # contradictory pair can be caught rather than silently resolved.
+    @{ Name = '--msvc is the compiler default spelled out'; Args = @('-d', '--msvc')
+       Contains = @('-G "Visual Studio', '-A x64')
+       NotContains = @('clang-cl') }
+    @{ Name = '--msbuild is the generator default spelled out'; Args = @('-d', '--msbuild')
+       Contains = @('-G "Visual Studio')
+       NotContains = @('Ninja') }
+    @{ Name = '--msvc with -x gives Ninja driving cl'; Args = @('-d', '--msvc', '-x')
+       Contains = @('-G "Ninja Multi-Config"')
+       NotContains = @('clang-cl') }
+    @{ Name = '--msbuild with -l gives the VS generator and the ClangCL toolset'; Args = @('-d', '--msbuild', '-l')
+       Contains = @('-G "Visual Studio', '-T ClangCL') }
+    # A developer with a standalone LLVM points at it; the VS-bundled clang
+    # is what a bare clang-cl.exe resolves to after the dev shell runs.
+    @{ Name = '--clang-path names the compiler, quoted for its spaces'; Args = @('-d', '-x', '--clang-path', 'C:\Program Files\LLVM\bin\clang-cl.exe')
+       Contains = @('-DCMAKE_C_COMPILER="C:\Program Files\LLVM\bin\clang-cl.exe"',
+                    '-DCMAKE_CXX_COMPILER="C:\Program Files\LLVM\bin\clang-cl.exe"') }
+    @{ Name = '--clang-path is a clang request on its own'; Args = @('-d', '-x', '--clang-path', 'C:\Program Files\LLVM\bin\clang-cl.exe')
+       Contains = @('deps/build-clang') }
+    @{ Name = '--clang-path needs Ninja to take effect'; Args = @('-d', '--clang-path', 'C:\Program Files\LLVM\bin\clang-cl.exe'); ExpectExit = 1
+       Contains = @('needs the Ninja generator') }
+    # `exist` is true for a directory too, and a directory would reach CMake
+    # as the compiler.
+    @{ Name = '--clang-path must name the exe, not its folder'; Args = @('-d', '-x', '--clang-path', 'C:\Program Files\LLVM'); ExpectExit = 1
+       Contains = @('is a directory') }
+    @{ Name = 'a clang-cl that is not there is caught early'; Args = @('-d', '-x', '--clang-path', 'C:\nope\clang-cl.exe'); ExpectExit = 1
+       Contains = @('No clang-cl at')
+       NotContains = @('cmake -S deps') }
+    @{ Name = '--clang-path contradicting --msvc is rejected'; Args = @('-d', '-x', '--msvc', '--clang-path', 'C:\Program Files\LLVM\bin\clang-cl.exe'); ExpectExit = 1
+       Contains = @('select different compilers') }
+    @{ Name = '--clang-cl and --msvc together are rejected'; Args = @('-d', '-l', '--msvc'); ExpectExit = 1
+       Contains = @('select different compilers') }
+    @{ Name = '--ninja and --msbuild together are rejected'; Args = @('-d', '-x', '--msbuild'); ExpectExit = 1
+       Contains = @('select different generators') }
+    # One option with a value, driven by a table, rather than a flag per
+    # release. Adding a release should not need a new flag.
+    @{ Name = '--vs 2019 pins that release and skips autodetect'; Args = @('-d', '--vs', '2019')
+       Contains = @('-G "Visual Studio 16 2019"')
+       NotContains = @('Detecting Visual Studio') }
+    @{ Name = '--vs 2022 pins that release'; Args = @('-d', '--vs', '2022')
+       Contains = @('-G "Visual Studio 17 2022"') }
+    @{ Name = '--vs 2026 pins that release'; Args = @('-d', '--vs', '2026')
+       Contains = @('-G "Visual Studio 18 2026"') }
+    @{ Name = 'an unknown release is rejected and the known ones listed'; Args = @('-d', '--vs', '2015'); ExpectExit = 1
+       Contains = @('Unknown Visual Studio release', '2019, 2022, 2026') }
+    @{ Name = '--vs and --ninja together are rejected'; Args = @('-d', '--vs', '2022', '-x'); ExpectExit = 1
+       Contains = @('select different generators') }
+    @{ Name = 'without --vs the release is autodetected'; Args = @('-d')
+       Contains = @('Detecting Visual Studio') }
+
+    'architecture'
+    @{ Name = 'x64 is the default'; Args = @('-d')
+       Contains = @('Configuration: Release, x64')
+       NotContains = @('build-arm64') }
+    @{ Name = 'arm64 sets the generator platform and deps tree'; Args = @('-d', '--arch', 'arm64')
+       Contains = @('-A ARM64', 'deps/build-arm64') }
+    @{ Name = 'the architecture is matched case-insensitively'; Args = @('-d', '--arch', 'ARM64')
+       Contains = @('-A ARM64', 'deps/build-arm64') }
+    @{ Name = 'arm64 under Ninja has no -A but keeps the arm64 tree'; Args = @('-d', '--arch', 'arm64', '-x', '-l')
+       Contains = @('deps/build-clang-arm64', '-DCMAKE_C_COMPILER=clang-cl.exe')
+       NotContains = @('-A ') }
+
+    'build configurations'
+    # One option with a value, driven by a table, so Release is named rather
+    # than being whatever is left when no flag is passed.
+    @{ Name = 'release is the default'; Args = @('-s')
+       Contains = @('-DCMAKE_BUILD_TYPE=Release', 'cmake -B "build" ') }
+    @{ Name = '--config release is the default spelled out'; Args = @('-s', '--config', 'release')
+       Contains = @('-DCMAKE_BUILD_TYPE=Release', 'cmake -B "build" ') }
+    @{ Name = '--config debug builds into build-dbg'; Args = @('-s', '--config', 'debug')
+       Contains = @('-DCMAKE_BUILD_TYPE=Debug', 'cmake -B "build-dbg" ') }
+    @{ Name = '--config relwithdebinfo builds into build-dbginfo'; Args = @('-s', '--config', 'relwithdebinfo')
+       Contains = @('-DCMAKE_BUILD_TYPE=RelWithDebInfo', 'cmake -B "build-dbginfo" ') }
+    @{ Name = '--config minsizerel builds into build-minsize'; Args = @('-s', '--config', 'minsizerel')
+       Contains = @('-DCMAKE_BUILD_TYPE=MinSizeRel', 'cmake -B "build-minsize" ') }
+    # Batch variable names are case-insensitive, so the table lookup is too.
+    @{ Name = 'the configuration name is matched case-insensitively'; Args = @('-s', '--config', 'RelWithDebInfo')
+       Contains = @('-DCMAKE_BUILD_TYPE=RelWithDebInfo') }
+    @{ Name = 'an unknown configuration is rejected and the known ones listed'; Args = @('-s', '--config', 'bogus'); ExpectExit = 1
+       Contains = @('Unknown configuration', 'release, debug, relwithdebinfo, minsizerel') }
+    # Release, RelWithDebInfo and MinSizeRel all link the /MD dependencies, so
+    # one tree serves all three. Debug is /MDd and cannot share.
+    @{ Name = 'minsizerel builds against the release deps'; Args = @('-d', '-s', '--config', 'minsizerel')
+       Contains = @('cmake -S deps -B "deps/build"', 'cmake -B "build-minsize" ')
+       NotContains = @('deps/build-minsize') }
+    @{ Name = 'relwithdebinfo builds against them too'; Args = @('-d', '-s', '-l', '--config', 'relwithdebinfo')
+       Contains = @('cmake -S deps -B "deps/build-clang"', 'cmake -B "build-dbginfo-clang" ')
+       NotContains = @('deps/build-dbginfo') }
+    @{ Name = 'debug keeps a dependency tree of its own'; Args = @('-d', '--config', 'debug')
+       Contains = @('cmake -S deps -B "deps/build-dbg"') }
+    # The build tree and the deps tree now have different names, so the
+    # derivation from the binary directory name cannot work and it is named.
+    @{ Name = 'a shared deps tree is named outright'; Args = @('-s', '-l', '--config', 'relwithdebinfo')
+       Match = @('-DDEP_BUILD_DIR="[A-Za-z]:\\.*\\deps\\build-clang"') }
+    @{ Name = 'configuration and arch combine into build-dbg-arm64'; Args = @('-s', '--config', 'debug', '--arch', 'arm64')
+       Contains = @('cmake -B "build-dbg-arm64" ') }
+
+    'what gets built'
+    @{ Name = 'the deps target defaults to deps'; Args = @('-d')
+       Contains = @('--target deps') }
+    @{ Name = '-t overrides the deps target'; Args = @('-d', '-t', 'dep_Boost')
+       Contains = @('--target dep_Boost') }
+    @{ Name = 'unit tests are off unless asked for'; Args = @('-s')
+       Contains = @('-DBUILD_TESTS=OFF') }
+    @{ Name = '--tests turns the unit tests on'; Args = @('-s', '--tests')
+       Contains = @('-DBUILD_TESTS=ON') }
+    @{ Name = '-a enables ASAN for the slicer'; Args = @('-s', '-a')
+       Contains = @('-DSLIC3R_ASAN=ON') }
+    @{ Name = 'the slicer build runs gettext'; Args = @('-s')
+       Contains = @('run_gettext.bat') }
+    # tools\7z.exe needs a 7z.dll beside it, which the repo does not carry,
+    # so the pack falls back to the bsdtar Windows ships. Either is correct;
+    # what matters is that one is chosen and handed the right names.
+    @{ Name = '-p packs the deps tree with whichever archiver is usable'; Args = @('-d', '-p')
+       Match = @('^\+ .*(7z\.exe a|tar\.exe -a -c -f) OrcaSlicer_dep_win-\S+\.zip OrcaSlicer_dep$') }
+    # The bundle is only good for what built it, so it carries the same three
+    # axes as the tree. Release x64 on cl keeps the historical plain name.
+    @{ Name = 'the bundle name carries compiler and deps flavour'; Args = @('-p', '-l', '--config', 'debug', '--arch', 'arm64')
+       Contains = @('OrcaSlicer_dep_win-ARM64-clang-dbg_') }
+    @{ Name = 'a relwithdebinfo pack is the release bundle'; Args = @('-p', '--config', 'relwithdebinfo')
+       Contains = @('OrcaSlicer_dep_win-x64_')
+       NotContains = @('-dbg', 'dbginfo') }
+    @{ Name = 'a plain release bundle keeps its old name'; Args = @('-p')
+       Contains = @('OrcaSlicer_dep_win-x64_')
+       NotContains = @('-clang', '-Release') }
+    @{ Name = 'the bundle is stamped with today, not a shuffled date'; Args = @('-p')
+       Match = @($stampPattern) }
+    # powershell.exe is not in System32 itself, so a trimmed PATH used to
+    # leave the stamp empty and the bundle named OrcaSlicer_dep_win-x64_.zip.
+    @{ Name = 'the bundle is stamped even with a bare PATH'; Args = @('-p')
+       Env = @{ PATH = 'C:\Windows\system32;C:\Windows' }
+       Match = @($stampPattern) }
+    @{ Name = '-p packs without rebuilding'; Args = @('-p')
+       Match = @('^\+ .*(7z\.exe a|tar\.exe -a -c -f) ')
+       NotContains = @('cmake -S deps') }
+    @{ Name = 'deps and slicer build in one invocation'; Args = @('-d', '-s', '-x', '-l')
+       Contains = @('cmake -S deps', 'cmake -B "build-clang" ') }
+
+    'the developer loop'
+    @{ Name = '--slicer-target builds one target'; Args = @('-s', '--slicer-target', 'libslic3r')
+       Contains = @('--config Release --target libslic3r') }
+    @{ Name = '--no-configure skips the slicer configure'; Args = @('-s', '--no-configure')
+       Contains = @('cmake --build "build"')
+       NotContains = @('cmake -B "build" ') }
+    @{ Name = '--no-configure skips the deps configure'; Args = @('-d', '--no-configure')
+       Contains = @('cmake --build "deps/build"')
+       NotContains = @('cmake -S deps') }
+    @{ Name = '--no-gettext skips the translation step'; Args = @('-s', '--no-gettext')
+       Contains = @('cmake --build "build"')
+       NotContains = @('run_gettext') }
+    # Installing copies the whole tree again for a layout only releases need,
+    # so it is asked for rather than assumed.
+    @{ Name = 'nothing is installed unless asked'; Args = @('-s')
+       Contains = @('run_gettext')
+       NotContains = @('--target install') }
+    @{ Name = '-i adds the install step'; Args = @('-s', '-i')
+       Contains = @('--target install') }
+    # install(TARGETS OrcaSlicer) has no OPTIONAL, so this would fail partway
+    # through a build instead of before it.
+    @{ Name = 'installing a tree with no executable is refused'; Args = @('-s', '-i', '--slicer-target', 'glad'); ExpectExit = 1
+       Contains = @('--install needs the executable')
+       NotContains = @('cmake --build') }
+    # Without -s there is no install step, so there is nothing to refuse.
+    @{ Name = 'the same flags without a slicer build are left alone'; Args = @('-d', '-i', '--slicer-target', 'glad')
+       Contains = @('cmake -S deps')
+       NotContains = @('--install needs the executable') }
+    @{ Name = 'naming the executable target is allowed'; Args = @('-s', '-i', '--slicer-target', 'OrcaSlicer')
+       Contains = @('--target install') }
+    # Ninja counts compilers, so -j goes on the command line. MSBuild's -j
+    # counts projects while /MP still runs one cl per core inside each, so the
+    # cap goes to CL_MPCount in the environment instead. A dry run can only
+    # show that no -j is passed.
+    @{ Name = '-j on Ninja passes -j to cmake'; Args = @('-s', '-x', '-j', '4')
+       Contains = @('Parallel jobs: 4', '--config Release  -j 4') }
+    @{ Name = '-j on Ninja reaches the deps build'; Args = @('-d', '-x', '-j', '2')
+       Contains = @('--target deps -j 2') }
+    @{ Name = '-j on MSBuild does not pass -j, which would count projects'; Args = @('-s', '-j', '4')
+       Contains = @('Parallel jobs: 4')
+       NotContains = @('-j 4') }
+    @{ Name = '-j on MSBuild leaves the deps build without -j too'; Args = @('-d', '-j', '2')
+       Contains = @('--target deps')
+       NotContains = @('-j 2') }
+    @{ Name = 'no -j means no job limit'; Args = @('-s')
+       NotContains = @('parallel jobs', '-j ') }
+    @{ Name = 'a non-numeric -j is rejected'; Args = @('-s', '-j', 'abc'); ExpectExit = 1
+       Contains = @('Invalid --jobs value') }
+    @{ Name = 'a zero -j is rejected'; Args = @('-s', '-j', '0'); ExpectExit = 1
+       Contains = @('Invalid --jobs value') }
+    @{ Name = 'the loop options combine into a single build command'; Args = @('-s', '-x', '--no-configure', '--no-gettext', '--slicer-target', 'libslic3r_tests', '-j', '8')
+       Contains = @('--target libslic3r_tests -j 8')
+       NotContains = @('cmake -B "build" ', 'run_gettext', '--target install') }
+
+    'one tree per configuration, compiler and architecture'
+    # CMake resets its cache and carries on when the compiler changes under an
+    # existing tree, leaving stamps from the old toolchain. Give each its own.
+    @{ Name = 'clang builds land in their own trees'; Args = @('-d', '-s', '-l')
+       Contains = @('cmake -S deps -B "deps/build-clang"', 'cmake -B "build-clang" ') }
+    @{ Name = 'MSVC keeps the historical plain names'; Args = @('-d', '-s', '--msvc')
+       Contains = @('cmake -S deps -B "deps/build"', 'cmake -B "build" ')
+       NotContains = @('build-clang') }
+    @{ Name = 'configuration, compiler and arch all name the tree'; Args = @('-d', '-s', '-l', '--config', 'debug', '--arch', 'arm64')
+       Contains = @('cmake -S deps -B "deps/build-dbg-clang-arm64"', 'cmake -B "build-dbg-clang-arm64" ') }
+
+    'locating the dependency tree'
+    # Without --deps-dir nothing is passed, so CMakeLists derives the path from
+    # the binary directory name as it always has.
+    @{ Name = 'the deps path is left to CMake by default'; Args = @('-s')
+       NotContains = @('-DDEP_BUILD_DIR') }
+    @{ Name = '--deps-dir tells the slicer where the deps are'; Args = @('-s', '--deps-dir', 'D:\orca-deps')
+       Contains = @('-DDEP_BUILD_DIR="D:\orca-deps"') }
+    @{ Name = '--deps-dir also redirects the deps build'; Args = @('-d', '--deps-dir', 'D:\orca-deps')
+       Contains = @('cmake -S deps -B "D:\orca-deps"', 'cmake --build "D:\orca-deps"')
+       NotContains = @('deps/build') }
+    # Paths are quoted throughout, so one with spaces survives the whole run.
+    @{ Name = 'a deps path with spaces survives'; Args = @('-d', '-s', '--deps-dir', 'C:\Program Files\deps')
+       Contains = @('-B "C:\Program Files\deps"', '-DDEP_BUILD_DIR="C:\Program Files\deps"') }
+    @{ Name = '--deps-dir also redirects the pack'; Args = @('-p', '--deps-dir', 'D:\orca-deps')
+       Contains = @('cd /d "D:\orca-deps"') }
+    @{ Name = 'pack uses an absolute default path'; Args = @('-p')
+       Match = @('^\+ cd /d "[A-Za-z]:\\.*\\deps\\build"') }
+    # CMakeLists derives DEP_BUILD_DIR from the build directory's name, so
+    # pointing the build elsewhere has to name the deps tree outright.
+    @{ Name = '--build-dir moves the slicer build'; Args = @('-s', '-l', '-x', '--build-dir', 'out/build/x64-clang')
+       Contains = @('cmake -B "out/build/x64-clang" ') }
+    @{ Name = '--build-dir still names the deps tree'; Args = @('-s', '-l', '-x', '--build-dir', 'out/build/x64-clang')
+       Match = @('-DDEP_BUILD_DIR="[A-Za-z]:\\.*\\deps\\build-clang"') }
+    @{ Name = '--deps-dir wins over the derived tree'; Args = @('-s', '--build-dir', 'out/build/x64-clang', '--deps-dir', 'D:\orca-deps')
+       Contains = @('-DDEP_BUILD_DIR="D:\orca-deps"') }
+    # A value ending in a backslash escapes the closing quote it is spliced
+    # into, so cmake would receive D:\tree" and swallow the next argument.
+    @{ Name = 'a trailing backslash is trimmed off a path'; Args = @('-s', '--build-dir', 'D:\tree\')
+       Contains = @('cmake -B "D:\tree" ') }
+    @{ Name = 'a build directory with spaces survives'; Args = @('-s', '--build-dir', 'C:\Program Files\tree')
+       Contains = @('cmake -B "C:\Program Files\tree" ') }
+    @{ Name = 'the default build names no deps tree'; Args = @('-s')
+       NotContains = @('DEP_BUILD_DIR') }
+
+    'saying what mode and toolchain are in play'
+    @{ Name = 'a dry run announces itself before the first command'; Args = @('-u')
+       First = '^Dry run: printing commands without running them\.$' }
+    @{ Name = 'the announcement leads even a full build'; Args = @('-ds')
+       First = '^Dry run: ' }
+    # Autodetect only runs for the Visual Studio generator, and only when no
+    # release was pinned, so it needs a Visual Studio on the machine.
+    @{ Name = 'the detected Visual Studio names its release year'; Args = @('-s')
+       Match = @('^Detected Visual Studio \d+ \(20\d\d\)$') }
+    @{ Name = 'pinning a release skips detection'; Args = @('-s', '--vs', '2022')
+       NotContains = @('Detected Visual Studio') }
+
+    'an action has to be asked for'
+    # Neither can happen without building the slicer, so they stand alone the
+    # way --install-vs does.
+    @{ Name = '--run-tests is an action on its own'; Args = @('--run-tests')
+       Contains = @('-DBUILD_TESTS=ON', 'ctest --test-dir')
+       NotContains = @('Nothing to do') }
+    @{ Name = '--tests is too'; Args = @('--tests')
+       Contains = @('-DBUILD_TESTS=ON')
+       NotContains = @('Nothing to do', 'ctest --test-dir') }
+    # Naming an action means that action, not a fuller build.
+    @{ Name = 'they do not add a slicer build to one already asked for'; Args = @('-d', '--tests')
+       Contains = @('cmake -S deps')
+       NotContains = @('cmake -B "build"') }
+    @{ Name = 'shaping options alone are not an action'; Args = @('--config', 'debug'); ExpectExit = 1
+       Contains = @('Nothing to do.')
+       NotContains = @('Build completed') }
+    @{ Name = '-j alone is not an action either'; Args = @('-j', '4'); ExpectExit = 1
+       Contains = @('Nothing to do.') }
+    @{ Name = '--install-vs counts as an action on its own'; Args = @('--install-vs', 'ide')
+       NotContains = @('Nothing to do.') }
+
+    'diagnostics'
+    @{ Name = '-v asks cmake for the command lines'; Args = @('-s', '-v')
+       Contains = @('--verbose') }
+    @{ Name = '-v applies to the deps build too'; Args = @('-d', '-v')
+       Contains = @('--target deps', '--verbose') }
+    # ninja's own default shows neither a percentage nor a time. %w and %W
+    # need ninja 1.12, and an unknown placeholder is fatal, so the format is
+    # chosen from the version rather than hardcoded.
+    @{ Name = '-v names the ninja progress format'; Args = @('-s', '-x', '-v')
+       Match = @('^Ninja progress format: \[.*%p.*\]') }
+    @{ Name = 'a ninja older than 1.12 gets the format it understands'; Args = @('-s', '-x', '-v')
+       Env = @{ PATH = $ninjaPaths['old'] }
+       Contains = @('Ninja progress format: [%s/%t %p :: %e]') }
+    @{ Name = 'ninja 1.12 gets elapsed and remaining'; Args = @('-s', '-x', '-v')
+       Env = @{ PATH = $ninjaPaths['new'] }
+       Contains = @('Ninja progress format: [%f/%t %p :: %w / %W]') }
+    @{ Name = 'a format you set yourself is left alone'; Args = @('-s', '-x', '-v')
+       Env = @{ NINJA_STATUS = '[mine] ' }
+       Contains = @('Ninja progress format: [mine]') }
+    @{ Name = 'MSBuild builds mention no ninja format'; Args = @('-s', '-v')
+       NotContains = @('Ninja progress format') }
+    @{ Name = 'builds are quiet without -v'; Args = @('-s')
+       NotContains = @('--verbose') }
+
+    'installing prerequisites'
+    # -u installs CMake, Perl and Git. Visual Studio is a separate ask, because
+    # most people already have it, and which one you want is a real choice.
+    @{ Name = '-u alone installs no Visual Studio'; Args = @('-u')
+       Contains = @('Kitware.CMake', 'StrawberryPerl', 'Git.Git')
+       NotContains = @('Microsoft.VisualStudio') }
+    # Asking for Visual Studio is asking to install prerequisites, so it does
+    # not also need -u; requiring both meant --install-vs alone did nothing.
+    @{ Name = '--install-vs works without -u'; Args = @('--install-vs', 'ide')
+       Contains = @('id=Microsoft.VisualStudio.Community', 'Kitware.CMake', 'Git.Git') }
+    @{ Name = '--install-vs buildtools asks for the build tools'; Args = @('-u', '--install-vs', 'buildtools')
+       Contains = @('id=Microsoft.VisualStudio.BuildTools')
+       NotContains = @('VC.CoreIde') }
+    @{ Name = '--install-vs ide asks for Community with the IDE component'; Args = @('-u', '--install-vs', 'ide')
+       Contains = @('id=Microsoft.VisualStudio.Community', 'VC.CoreIde') }
+    @{ Name = 'an unknown edition is rejected and the known ones listed'; Args = @('-u', '--install-vs', 'bogus'); ExpectExit = 1
+       Contains = @('Unknown Visual Studio edition', 'buildtools, ide') }
+    @{ Name = '--vs picks which release to install'; Args = @('-u', '--vs', '2022', '--install-vs', 'buildtools')
+       Contains = @('id=Microsoft.VisualStudio.2022.BuildTools') }
+    @{ Name = '-l adds the clang compiler and the MSBuild toolset'; Args = @('-u', '--install-vs', 'buildtools', '-l')
+       Contains = @('VC.Llvm.Clang ', 'VC.Llvm.ClangToolset') }
+    # CMake 4.x breaks Boost.Context on ARM64, so the installer pins 3.31 there
+    # and leaves x64 on the current release.
+    @{ Name = 'CMake is pinned to 3.31 when installing for arm64'; Args = @('-u', '--arch', 'arm64')
+       Contains = @('Kitware.CMake --version 3.31.8') }
+    @{ Name = 'CMake is not pinned for x64'; Args = @('-u', '--arch', 'x64')
+       Contains = @('Kitware.CMake')
+       NotContains = @('--version') }
+    @{ Name = 'installing for arm64 asks for the ARM64 toolset'; Args = @('--install-vs', 'buildtools', '--arch', 'arm64')
+       Contains = @('Microsoft.VisualStudio.Component.VC.Tools.ARM64') }
+    @{ Name = 'an x64 install asks only for the x64 toolset'; Args = @('--install-vs', 'buildtools')
+       Contains = @('Microsoft.VisualStudio.Component.VC.Tools.x86.x64')
+       NotContains = @('VC.Tools.ARM64') }
+
+    'dry run changes nothing'
+    # clean_tree resolves the path before removing it, so the line echoed is
+    # absolute. It is the last thing printed before a directory goes.
+    @{ Name = '-c echoes the deps rmdir rather than running it'; Args = @('-d', '-c')
+       Match = @('^\+ rmdir /S /Q "[A-Za-z]:\\.*\\deps\\build"$') }
+    @{ Name = '-c removes the tree --deps-dir named, not the default one'; Args = @('-d', '-c', '--deps-dir', 'D:\orca-deps')
+       Match = @('^\+ rmdir /S /Q "D:\\orca-deps"$')
+       NotContains = @('\deps\build') }
+    @{ Name = '-c echoes the slicer rmdir rather than running it'; Args = @('-s', '-c')
+       Match = @('^\+ rmdir /S /Q "[A-Za-z]:\\.*\\build"$') }
+    @{ Name = 'cleaning a slicer build leaves the deps tree alone'; Args = @('-s', '-c')
+       NotMatch = @('rmdir.*\\deps\\') }
+    @{ Name = 'cleaning both builds removes both trees'; Args = @('-d', '-s', '-c')
+       Match = @('^\+ rmdir /S /Q "[A-Za-z]:\\[^"]*\\deps\\build"$',
+                 '^\+ rmdir /S /Q "[A-Za-z]:\\(?!.*\\deps\\)[^"]*\\build"$') }
+
+    # Nothing below should be reachable. They are a floor under a bug that
+    # hands clean_tree a path far shorter than it looks.
+    @{ Name = 'a configuration whose lookup comes back empty is rejected'; Args = @('-d', '-c', '--config', 'release '); ExpectExit = 1
+       Contains = @('Unknown configuration')
+       NotContains = @('rmdir') }
+    @{ Name = 'a drive root is refused'; Args = @('-d', '-c', '--deps-dir', 'D:\'); ExpectExit = 1
+       Contains = @('that is a drive root')
+       NotContains = @('+ rmdir') }
+    @{ Name = 'the repository itself is refused'; Args = @('-d', '-c', '--deps-dir', '.'); ExpectExit = 1
+       Contains = @('that is the repository itself')
+       NotContains = @('+ rmdir') }
+    @{ Name = '-k echoes the taskkills rather than running them'; Args = @('-k')
+       Contains = @('+ taskkill /F /IM MSBuild.exe', '+ taskkill /F /IM cl.exe') }
+    @{ Name = '-k also covers the Ninja toolchain'; Args = @('-k')
+       Contains = @('+ taskkill /F /IM ninja.exe', '+ taskkill /F /IM clang-cl.exe') }
+    @{ Name = '-k announces the dry run like every other action'; Args = @('-k')
+       First = '^Dry run: ' }
+    @{ Name = '-u echoes the winget installs rather than running them'; Args = @('-u')
+       Contains = @('+ winget install', 'Kitware.CMake')
+       NotContains = @('cmake -S deps') }
+    # Not a dry run: winget is a stub that fails, so nothing is installed.
+    @{ Name = 'a failed install is reported, not claimed as success'; Args = @('-u')
+       DryRun = $false; ExpectExit = 1
+       Env = @{ PATH = $stubPath }
+       Contains = @('Failed to install:', 'CMake', 'Perl', 'Git')
+       NotContains = @('Installed the prerequisites') }
+    # The reason belongs inside the frame. Every command this path ran had
+    # already succeeded, so naming the last one would point at the wrong thing.
+    @{ Name = 'a failed install names the reason, not the last command'; Args = @('-u')
+       DryRun = $false; ExpectExit = 1
+       Env = @{ PATH = $stubPath }
+       Contains = @('####', 'Failed to install:')
+       NotContains = @('Failed: winget') }
+    @{ Name = 'a dry run does not claim the install happened'; Args = @('-u')
+       Contains = @('Dry run: nothing was installed.')
+       NotContains = @('are in place') }
+    @{ Name = '-u with a build defers that build, not a fuller one'; Args = @('-u', '-d')
+       Contains = @('build_win.bat -d')
+       NotContains = @('build_win.bat -ds') }
+    @{ Name = '-u on its own suggests the whole build'; Args = @('-u')
+       Contains = @('build_win.bat -ds') }
+    @{ Name = 'a dry run only echoes, it never configures'; Args = @('-d')
+       Contains = @('+ cmake')
+       NotContains = @('CMake Error', 'Configuring done') }
+
+    'extra configure arguments'
+    # --deps-args and --slicer-args are declared "rawstring", so a value that
+    # looks like an option is allowed through. Plain string options still
+    # reject one, since there it almost always means a forgotten value.
+    @{ Name = '--deps-args reaches the deps configure'; Args = @('-d', '--deps-args', 'FOO')
+       Contains = @('-DCMAKE_BUILD_TYPE=Release FOO') }
+    @{ Name = '--slicer-args reaches the slicer configure'; Args = @('-s', '--slicer-args', 'BAZ')
+       Contains = @('BAZ') }
+    @{ Name = '--deps-args accepts a value that starts with a dash'; Args = @('-d', '--deps-args', '-DFOO')
+       Contains = @('-DFOO') }
+    @{ Name = 'a plain string option still rejects a dash-leading value'; Args = @('-d', '--deps-target', '--tests'); ExpectExit = 1
+       Contains = @('looks like another option') }
+    # cmd splits arguments on "=" as well as spaces, so an unquoted -D reaches
+    # the script as two arguments however it was invoked.
+    @{ Name = 'an unquoted value containing = is rejected'; Args = @('-d', '--deps-args', 'FOO=BAR'); ExpectExit = 1
+       Contains = @('Unknown argument') }
+    # The environment overrides exist for that reason; nothing tokenises them.
+    @{ Name = 'ORCA_DEPS_CMAKE_ARGS reaches the deps configure'; Args = @('-d')
+       Env = @{ ORCA_DEPS_CMAKE_ARGS = '-DFOO=BAR -DBAZ=QUX' }
+       Contains = @('-DFOO=BAR -DBAZ=QUX') }
+    @{ Name = 'ORCA_SLICER_CMAKE_ARGS reaches the slicer configure'; Args = @('-s')
+       Env = @{ ORCA_SLICER_CMAKE_ARGS = '-DWANTED=1' }
+       Contains = @('-DWANTED=1') }
+    @{ Name = 'the deps override does not leak into the slicer configure'; Args = @('-s')
+       Env = @{ ORCA_DEPS_CMAKE_ARGS = '-DDEPSONLY=1' }
+       NotContains = @('-DDEPSONLY=1') }
+    @{ Name = 'the help points at the environment for a spaced argument'; Args = @('--help'); DryRun = $false
+       Contains = @('Neither form supports a value containing an ampersand') }
+    @{ Name = 'the help lists the environment overrides'; Args = @('--help'); DryRun = $false
+       Contains = @('Environment:', 'ORCA_DEPS_CMAKE_ARGS', 'ORCA_SLICER_CMAKE_ARGS') }
+
+    'running the unit tests'
+    @{ Name = '--tests builds them without running them'; Args = @('-s', '--tests')
+       Contains = @('-DBUILD_TESTS=ON')
+       NotContains = @('ctest') }
+    @{ Name = '--run-tests builds and runs them'; Args = @('-s', '--run-tests')
+       Contains = @('-DBUILD_TESTS=ON', 'ctest --test-dir "build/tests" -C Release --output-on-failure') }
+    @{ Name = '--run-tests follows the build type and directory'; Args = @('-s', '--run-tests', '--config', 'debug')
+       Contains = @('ctest --test-dir "build-dbg/tests" -C Debug') }
+    @{ Name = 'no tests are run by default'; Args = @('-s')
+       NotContains = @('ctest') }
+
+    'failures are reported'
+    @{ Name = 'a missing cmake is caught and exits non-zero'; Args = @('-d'); ExpectExit = 1
+       Env = @{ PATH = 'C:\Windows\system32;C:\Windows' }
+       Contains = @('CMake was not found') }
+    @{ Name = 'packing does not need cmake, only an archiver'; Args = @('-p')
+       Env = @{ PATH = 'C:\Windows\system32;C:\Windows' }
+       NotContains = @('CMake was not found') }
+    # Not a dry run: a cd to a missing drive is a real failure inside a
+    # parenthesised block, which is where exit /b silently loses its code.
+    # Without the jump to :die this exits 0 and a failed build reads as a
+    # successful one.
+    @{ Name = 'a failure inside a build block reaches the caller'; Args = @('-p', '--deps-dir', 'Z:\nope')
+       DryRun = $false; ExpectExit = 1
+       Contains = @('Exit code 1.', '####')
+       NotContains = @('Build completed', 'Try') }
+    # The retry follows the stage that failed. Offering it for the whole run
+    # would clean a dependency tree that was not at fault.
+    @{ Name = 'a failure names a retry scoped to the stage that failed'; Args = @('-d', '-s', '--deps-dir', 'Z:\nope')
+       DryRun = $false; ExpectExit = 1
+       Contains = @('build_win.bat -d --deps-dir "Z:\nope" -c')
+       NotContains = @('build_win.bat -ds') }
+    # CMake's own failure here is hundreds of lines about package resolution.
+    @{ Name = 'a missing dependency tree is named, not left to CMake'; Args = @('-s', '--deps-dir', 'Z:\nope')
+       DryRun = $false; ExpectExit = 1
+       Contains = @('Dependencies not found at', 'Build them with build_win.bat -d --deps-dir "Z:\nope"')
+       NotContains = @('cmake -B', 'Try') }
+    # Every other suggestion carries the flags that reproduce the run; a bare
+    # -d would point at the MSVC tree after a clang build.
+    @{ Name = 'the missing-deps hint names this toolchain'; Args = @('-s', '-l', '-x', '--deps-dir', 'deps/not-built')
+       DryRun = $false; ExpectExit = 1
+       Contains = @('Build them with build_win.bat -d -l -x --deps-dir "deps/not-built"')
+       NotExists = @('deps/not-built') }
+    # A dry run configures nothing, so it must not depend on which trees happen
+    # to exist on the machine running the suite.
+    @{ Name = 'a dry run does not check for the deps tree'; Args = @('-s', '--deps-dir', 'Z:\nope')
+       Contains = @('cmake -B "build"')
+       NotContains = @('Dependencies not found') }
+    # -d is about to build them, so there is nothing to report yet.
+    @{ Name = 'building the deps in the same run skips the check'; Args = @('-d', '-s', '--deps-dir', 'Z:\nope')
+       DryRun = $false; ExpectExit = 1
+       NotContains = @('Dependencies not found') }
+    # A configure fails before any compiler runs, so -v has nothing to show.
+    @{ Name = 'a configure failure is not offered a verbose rebuild'; Args = @('-d', '--deps-dir', 'Z:\nope')
+       DryRun = $false; ExpectExit = 1
+       Contains = @('-c     discard that tree')
+       NotContains = @('-v     show the failing') }
+    # A bare --no-configure succeeds on a machine that already has a usable
+    # build tree, so name one that cannot exist instead.
+    @{ Name = 'a build failure is'; Args = @('-s', '--no-configure', '--build-dir', 'deps/no-such-tree')
+       DryRun = $false; ExpectExit = 1
+       Contains = @('-v     show the failing')
+       NotExists = @('deps/no-such-tree') }
+    # --build-dir names the slicer tree, which a deps failure has nothing to do
+    # with. --deps-dir stays, because that is the tree that failed.
+    @{ Name = 'a deps retry leaves out the slicer tree'; Args = @('-d', '-s', '--deps-dir', 'Z:\nope', '--build-dir', 'D:\b')
+       DryRun = $false; ExpectExit = 1
+       Contains = @('build_win.bat -d --deps-dir "Z:\nope" -c')
+       NotContains = @('--build-dir') }
+    @{ Name = 'an unknown configuration stays a single line'; Args = @('-s', '--config', 'bogus'); ExpectExit = 1
+       Contains = @('Unknown configuration')
+       NotContains = @('####', 'Try') }
+    @{ Name = 'a bad --jobs value is not framed either'; Args = @('-s', '-j', 'x'); ExpectExit = 1
+       Contains = @('Invalid --jobs value')
+       NotContains = @('####') }
+
+    'the summary says what to do next'
+    # Every suggested command carries the flags that reproduce this run.
+    @{ Name = 'a deps build points at the slicer build'; Args = @('-d', '-l')
+       Contains = @('Build the slicer      build_win.bat -s -l')
+       NotContains = @('Run it') }
+    @{ Name = 'a ninja slicer build offers a single target'; Args = @('-s', '-l', '-x')
+       Contains = @('Rebuild after edits   build_win.bat -s -l -x --no-configure', 'Rebuild one target')
+       NotContains = @('Solution', 'Open in Visual Studio') }
+    @{ Name = 'a visual studio build names the solution instead'; Args = @('-s')
+       Contains = @('Solution      ', 'Open in Visual Studio build\OrcaSlicer.sln',
+                    'Rebuild after edits   build_win.bat -s --no-configure')
+       NotContains = @('Rebuild one target') }
+    @{ Name = 'the configuration and architecture come back'; Args = @('-s', '-l', '-x', '--config', 'debug', '--arch', 'arm64')
+       Contains = @('build_win.bat -s -l -x --config debug --arch arm64 --no-configure') }
+    @{ Name = 'the tree overrides come back quoted'; Args = @('-s', '--deps-dir', 'D:\d', '--build-dir', 'D:\b')
+       Contains = @('--deps-dir "D:\d" --build-dir "D:\b"') }
+    @{ Name = 'a pinned visual studio release comes back'; Args = @('-s', '--vs', '2022')
+       Contains = @('build_win.bat -s --vs 2022 --no-configure') }
+    # Autodetection writes what it found into the same variable, so a detected
+    # release must not come back as though it had been asked for.
+    @{ Name = 'a detected release does not'; Args = @('-s')
+       NotContains = @('--vs') }
+    @{ Name = 'the binary is named in the build tree it was built in'; Args = @('-s', '-l', '-x')
+       Contains = @('build-clang\src\Release\orca-slicer.exe') }
+    @{ Name = 'installing names the installed copy instead'; Args = @('-s', '-l', '-x', '-i')
+       Contains = @('build-clang\OrcaSlicer\orca-slicer.exe') }
+    # -i changes where the binary lands, so a rebuild that dropped it would
+    # leave the path above pointing at a stale copy.
+    @{ Name = 'the rebuild suggestion keeps -i'; Args = @('-s', '-l', '-x', '-i')
+       Contains = @('Rebuild after edits   build_win.bat -s -l -x -i --no-configure') }
+    # A deps retry has no install step to repeat.
+    @{ Name = 'a deps retry drops it'; Args = @('-d', '-s', '-i', '--deps-dir', 'Z:\nope')
+       DryRun = $false; ExpectExit = 1
+       Contains = @('build_win.bat -d --deps-dir "Z:\nope" -c')
+       NotContains = @('-d -i') }
+    # Naming a target builds it and its dependencies, not its dependents, so
+    # the binary on disk is whatever the last full build left there.
+    @{ Name = 'a single-target build does not claim the whole binary'; Args = @('-s', '-l', '-x', '--slicer-target', 'glad')
+       Contains = @('Target        glad', 'Relink the binary     build_win.bat -s -l -x --no-configure')
+       NotContains = @('Run it', 'orca-slicer.exe', 'Rebuild after edits') }
+    # The executable has a target of its own, and naming that one does relink.
+    @{ Name = 'naming the executable target still claims the binary'; Args = @('-s', '-l', '-x', '--slicer-target', 'OrcaSlicer')
+       Contains = @('Run it', 'orca-slicer.exe', 'Rebuild after edits')
+       NotContains = @('Target        OrcaSlicer', 'Relink the binary') }
+    @{ Name = '--run-tests offers the ctest line'; Args = @('-s', '-l', '-x', '--run-tests')
+       Contains = @('Re-run the tests      ctest --test-dir build-clang/tests -C Release') }
+    @{ Name = 'packing names the bundle and how to use it'; Args = @('-p', '-l')
+       Contains = @('Bundle        ', 'Share the bundle') }
+    # The line supplies its own tree, so the one this run used must not ride
+    # along and contradict it.
+    @{ Name = 'the bundle line names one tree, not two'; Args = @('-s', '-p', '-l', '-x', '--deps-dir', 'D:\shared')
+       Contains = @('then build_win.bat -s -l -x --deps-dir <path>')
+       NotContains = @('--deps-dir "D:\shared" --deps-dir') }
+    @{ Name = 'installing prerequisites suggests the build that follows'; Args = @('-u', '-l')
+       Contains = @('Restart this shell', 'build_win.bat -ds -l')
+       NotContains = @('Run it') }
+    # Everything below the header line is worked out the same way in either
+    # run, which is why a dry run can cover it.
+    @{ Name = 'a dry run does not claim a build happened'; Args = @('-s', '-l', '-x')
+       Contains = @('Dry run: nothing was built.')
+       NotContains = @('Build completed in') }
+    # --no-configure is the iteration loop and still gets the block; four
+    # lines after a rebuild is not enough to be worth suppressing.
+    @{ Name = '--no-configure still gets the summary'; Args = @('-s', '-l', '-x', '--no-configure')
+       Contains = @('Next', 'Rebuild after edits') }
+
+    'pointing at the solution'
+    @{ Name = 'the VS generator says where the solution is'; Args = @('-s')
+       Match = @('^  Solution      .*\\build\\OrcaSlicer\.sln$') }
+    @{ Name = 'the solution path follows the configuration'; Args = @('-s', '--config', 'debug')
+       Match = @('^  Solution      .*\\build-dbg\\OrcaSlicer\.sln$') }
+    @{ Name = 'the solution line survives an install'; Args = @('-s', '-i')
+       Contains = @('  Solution      ') }
+    # The path is resolved, not pasted onto the repository root, so it is
+    # right whether --build-dir came absolute or with forward slashes.
+    @{ Name = 'a moved build still prints one real path'; Args = @('-s', '--build-dir', 'out/build/x64-clang')
+       Match = @('^  Solution      [A-Za-z]:\\[^/]+\\OrcaSlicer\.sln$') }
+    @{ Name = 'an absolute --build-dir is not glued onto the repo root'; Args = @('-s', '--build-dir', 'D:\tree')
+       Contains = @('Solution      D:\tree\OrcaSlicer.sln') }
+)
+
+function Invoke-BuildScript {
+    param([string[]] $Arguments, [hashtable] $Environment)
+
+    $saved = @{}
+    if ($Environment) {
+        foreach ($key in $Environment.Keys) {
+            $saved[$key] = [Environment]::GetEnvironmentVariable($key)
+            Set-Item -Path "env:$key" -Value $Environment[$key]
+        }
+    }
+    try {
+        # 'Stop' turns a native command's stderr into a terminating error, and
+        # a case that exercises a real failure writes to stderr. Let the output
+        # through and judge the run by its exit code instead. The assignment is
+        # scoped to this function, so the rest of the suite keeps 'Stop'.
+        $ErrorActionPreference = 'Continue'
+        if ($Arguments.Count -eq 0) {
+            $out = & $Script 2>&1 | Out-String
+        } else {
+            $out = & $Script @Arguments 2>&1 | Out-String
+        }
+        return [pscustomobject]@{ Output = $out; Exit = $LASTEXITCODE }
+    } finally {
+        foreach ($key in $saved.Keys) {
+            if ($null -eq $saved[$key]) { Remove-Item -Path "env:$key" -ErrorAction SilentlyContinue }
+            else { Set-Item -Path "env:$key" -Value $saved[$key] }
+        }
+    }
+}
+
+$knownFields = @(
+    'Name', 'Args', 'ExpectExit', 'DryRun', 'First', 'Env',
+    'Contains', 'NotContains', 'Match', 'NotMatch', 'NotExists'
+)
+
+function Test-Case {
+    param([hashtable] $Case)
+
+    # Read fields with the indexer, not dot notation. A hashtable exposes its
+    # own members too, so $Case.Contains returns the Contains *method* whenever
+    # the case has no key by that name.
+    $argv = @($Case['Args'])
+    if (-not $Case.ContainsKey('DryRun') -or $Case['DryRun']) { $argv += '--dry-run' }
+
+    $expect = 0
+    if ($Case.ContainsKey('ExpectExit')) { $expect = $Case['ExpectExit'] }
+
+    $result = Invoke-BuildScript -Arguments $argv -Environment $Case['Env']
+
+    $problems = @()
+
+    # A misspelled field is silently ignored by the checks below, which
+    # leaves the case asserting nothing at all and passing.
+    foreach ($field in $Case.Keys) {
+        if ($knownFields -notcontains $field) { $problems += "unknown field '$field'" }
+    }
+
+    if ($result.Exit -ne $expect) { $problems += "exit $($result.Exit), expected $expect" }
+    foreach ($needle in $Case['Contains']) {
+        if (-not $result.Output.Contains($needle)) { $problems += "missing '$needle'" }
+    }
+    foreach ($needle in $Case['NotContains']) {
+        if ($result.Output.Contains($needle)) { $problems += "unexpected '$needle'" }
+    }
+    $lines = $result.Output -split "`r?`n"
+    if ($Case['First'] -and $lines[0] -notmatch $Case['First']) {
+        $problems += "first line was '$($lines[0])'"
+    }
+    foreach ($pattern in $Case['Match']) {
+        if (@($lines | Where-Object { $_ -match $pattern }).Count -eq 0) {
+            $problems += "no line matching /$pattern/"
+        }
+    }
+    foreach ($pattern in $Case['NotMatch']) {
+        foreach ($line in @($lines | Where-Object { $_ -match $pattern })) {
+            $problems += "line matches /$pattern/: $line"
+        }
+    }
+    # Output cannot show what a run did not create.
+    foreach ($path in $Case['NotExists']) {
+        $full = Join-Path (Split-Path -Parent $Script) $path
+        if (Test-Path $full) {
+            $problems += "created '$path'"
+        }
+    }
+    return ,$problems
+}
+
+$pass = 0
+$failed = @()
+# Held back so a filtered run does not print headings for groups it skipped.
+$heading = $null
+
+foreach ($case in $cases) {
+    if ($case -is [string]) {
+        $heading = $case
+        continue
+    }
+    if ($Name -and $case['Name'] -notmatch $Name) { continue }
+    if ($heading) {
+        Write-Host ''
+        Write-Host $heading -ForegroundColor Cyan
+        $heading = $null
+    }
+
+    $problems = Test-Case -Case $case
+    if ($problems.Count -eq 0) {
+        $pass++
+        Write-Host ('  ok   ' + $case['Name'])
+    } else {
+        $failed += $case['Name']
+        Write-Host ('  FAIL ' + $case['Name']) -ForegroundColor Red
+        foreach ($problem in $problems) { Write-Host ('         ' + $problem) -ForegroundColor Red }
+        Write-Host ('         args: ' + (@($case['Args']) -join ' '))
+    }
+}
+
+Remove-Item -Recurse -Force $fixtures -ErrorAction SilentlyContinue
+
+Write-Host ''
+# A pattern that matched nothing has proved nothing, so do not report it as
+# a clean run.
+if ($Name -and $pass -eq 0 -and $failed.Count -eq 0) {
+    Write-Host "no case matched /$Name/" -ForegroundColor Red
+    exit 1
+}
+Write-Host "$pass passed, $($failed.Count) failed"
+if ($failed.Count -gt 0) {
+    foreach ($name in $failed) { Write-Host "  failed: $name" -ForegroundColor Red }
+    exit 1
+}
+exit 0

src/libslic3r/GCode.cpp

@@ -8197,9 +8197,10 @@ std::string GCode::_extrude(const ExtrusionPath &path, std::string description,
             }
             variable_speed = std::any_of(new_points.begin(), new_points.end(),
                                          [speed](const ProcessedPoint &p) { return fabs(double(p.speed) - speed) > 1; }); // Ignore small speed variations (under 1mm/sec)
-            if (!NOZZLE_CONFIG(enable_overhang_speed) && FILAMENT_CONFIG(enable_overhang_bridge_fan) && m_enable_cooling_markers) {
-                for (ProcessedPoint &point : new_points)
-                    point.speed = speed;
+            if (FILAMENT_CONFIG(enable_overhang_bridge_fan) && m_enable_cooling_markers) {
+                if (!NOZZLE_CONFIG(enable_overhang_speed))
+                    for (ProcessedPoint &point : new_points)
+                        point.speed = speed;
                 variable_speed = new_points.size() > 1;
             }
     }

src/libslic3r/GCode/CoolingBuffer.cpp

@@ -1024,28 +1024,29 @@ std::string CoolingBuffer::apply_layer_cooldown(
         }
 
         if (need_set_fan) {
+            const auto set_fan = [&](int speed) {
+                if (m_current_fan_speed != speed) {
+                    new_gcode += GCodeWriter::set_fan(m_config.gcode_flavor, speed, part_cooling_fan_min_pwm);
+                    m_current_fan_speed = speed;
+                }
+            };
             if (fan_speed_change_requests[CoolingLine::TYPE_OVERHANG_FAN_START]){
-                new_gcode += GCodeWriter::set_fan(m_config.gcode_flavor, overhang_fan_speed, part_cooling_fan_min_pwm);
-                m_current_fan_speed = overhang_fan_speed;
+                set_fan(overhang_fan_speed);
             } else if (fan_speed_change_requests[CoolingLine::TYPE_INTERNAL_BRIDGE_FAN_START]){ // ORCA: Add support for separate internal bridge fan speed control
-                new_gcode += GCodeWriter::set_fan(m_config.gcode_flavor, internal_bridge_fan_speed, part_cooling_fan_min_pwm);
-                m_current_fan_speed = internal_bridge_fan_speed;
+                set_fan(internal_bridge_fan_speed);
             }
             else if (fan_speed_change_requests[CoolingLine::TYPE_SUPPORT_INTERFACE_FAN_START]){
-                new_gcode += GCodeWriter::set_fan(m_config.gcode_flavor, supp_interface_fan_speed, part_cooling_fan_min_pwm);
-                m_current_fan_speed = supp_interface_fan_speed;
+                set_fan(supp_interface_fan_speed);
             }
             else if (fan_speed_change_requests[CoolingLine::TYPE_IRONING_FAN_START]){
-                new_gcode += GCodeWriter::set_fan(m_config.gcode_flavor, ironing_fan_speed, part_cooling_fan_min_pwm);
-                m_current_fan_speed = ironing_fan_speed;
+                set_fan(ironing_fan_speed);
             }
             else if(fan_speed_change_requests[CoolingLine::TYPE_FORCE_RESUME_FAN] && m_current_fan_speed != -1){
                 new_gcode += GCodeWriter::set_fan(m_config.gcode_flavor, m_current_fan_speed, part_cooling_fan_min_pwm);
                 fan_speed_change_requests[CoolingLine::TYPE_FORCE_RESUME_FAN] = false;
             }
             else {
-                new_gcode += GCodeWriter::set_fan(m_config.gcode_flavor, m_fan_speed, part_cooling_fan_min_pwm);
-                m_current_fan_speed = m_fan_speed;
+                set_fan(m_fan_speed);
             }
             need_set_fan = false;
         }

src/libslic3r/GCode/FanMover.cpp

@@ -170,14 +170,13 @@ void FanMover::_put_in_middle_G1(std::list<BufferData>::iterator item_to_split,
 
 void FanMover::_print_in_middle_G1(BufferData& line_to_split, float nb_sec, const std::string &line_to_write) {
     if (nb_sec < line_to_split.time * 0.1) {
-        // doesn't really need to be split, print it after
-        m_process_output += line_to_split.raw + "\n";
+        // Doesn't need to be split: the insertion point is at the start.
         m_process_output += line_to_write + (line_to_write.back() == '\n'?"":"\n");
-    } else if (nb_sec > line_to_split.time * 0.9) {
-        // doesn't really need to be split, print it before
-        //will also print before if line_to_split.time == 0
-        m_process_output += line_to_write + (line_to_write.back() == '\n' ? "" : "\n");
         m_process_output += line_to_split.raw + "\n";
+    } else if (nb_sec > line_to_split.time * 0.9) {
+        // Doesn't need to be split: the insertion point is at the end.
+        m_process_output += line_to_split.raw + "\n";
+        m_process_output += line_to_write + (line_to_write.back() == '\n' ? "" : "\n");
     }else if(line_to_split.raw.size() > 2
         && line_to_split.raw[0] == 'G' && line_to_split.raw[1] == '1' && line_to_split.raw[2] == ' ') {
         float percent = nb_sec / line_to_split.time;

src/libslic3r/GCode/GCodeProcessor.cpp

@@ -532,7 +532,7 @@ void GCodeProcessor::TimeMachine::calculate_time(GCodeProcessorResult& result, P
                     const float height = interpolate ? lerp(prev_move.height, curr_move.height, t) : curr_move.height;
                     // ORCA: Fix issue with flow rate changes being visualized incorrectly
                     const float mm3_per_mm = curr_move.mm3_per_mm;
-                    const float fan_speed = interpolate ? lerp(prev_move.fan_speed, curr_move.fan_speed, t) : curr_move.fan_speed;
+                    const float fan_speed = curr_move.fan_speed;
                     const float temperature = interpolate ? lerp(prev_move.temperature, curr_move.temperature, t) : curr_move.temperature;
                     actual_speed_moves.push_back({
                         block.move_id,
@@ -563,7 +563,7 @@ void GCodeProcessor::TimeMachine::calculate_time(GCodeProcessorResult& result, P
                     const float height = interpolate ? lerp(prev_move.height, curr_move.height, t) : curr_move.height;
                     // ORCA: Fix issue with flow rate changes being visualized incorrectly
                     const float mm3_per_mm = curr_move.mm3_per_mm;
-                    const float fan_speed = interpolate ? lerp(prev_move.fan_speed, curr_move.fan_speed, t) : curr_move.fan_speed;
+                    const float fan_speed = curr_move.fan_speed;
                     const float temperature = interpolate ? lerp(prev_move.temperature, curr_move.temperature, t) : curr_move.temperature;
                     actual_speed_moves.push_back({
                         block.move_id,

src/libslic3r/PrintConfig.cpp

@@ -10091,6 +10091,10 @@ int DynamicPrintConfig::update_values_from_single_to_multi(DynamicPrintConfig& m
 
                     for (int index = 0; index < variant_count; index++)
                     {
+                        //variant_count is the variant column width, src_opt the value array;
+                        //they disagree when the source was authored at a different width
+                        if (index >= (int)src_opt->values.size())
+                            break;
                         if (opt->values[index] > src_opt->values[index])
                             opt->values[index] = src_opt->values[index];
                     }
@@ -10108,6 +10112,8 @@ int DynamicPrintConfig::update_values_from_single_to_multi(DynamicPrintConfig& m
 
                     for (int index = 0; index < variant_count; index++)
                     {
+                        if (index >= (int)src_opt->values.size())
+                            break;
                         if (opt->values[index].value > src_opt->values[index].value)
                             opt->values[index] = src_opt->values[index];
                     }
@@ -10302,6 +10308,10 @@ int DynamicPrintConfig::update_values_from_multi_to_multi(DynamicPrintConfig& ne
 
                     for(auto idx : variant_indices){
                         assert(idx < old_count);
+                        //the counts come from the variant columns, the arrays from the options;
+                        //they disagree when a config was authored at a different variant width
+                        if (idx >= old_count || new_variant_index >= (int)opt->values.size())
+                            continue;
                         if (old_values[idx] < opt->values[new_variant_index])
                             opt->values[new_variant_index] = old_values[idx];
                     }
@@ -10332,6 +10342,10 @@ int DynamicPrintConfig::update_values_from_multi_to_multi(DynamicPrintConfig& ne
 
                     for(auto idx : variant_indices){
                         assert(idx < old_count);
+                        //the counts come from the variant columns, the arrays from the options;
+                        //they disagree when a config was authored at a different variant width
+                        if (idx >= old_count || new_variant_index >= (int)opt->values.size())
+                            continue;
                         if (old_values[idx] < opt->values[new_variant_index])
                             opt->values[new_variant_index] = old_values[idx];
                     }
@@ -10362,6 +10376,8 @@ int DynamicPrintConfig::update_values_from_multi_to_multi(DynamicPrintConfig& ne
 
                     for(auto idx : variant_indices){
                         assert(idx < old_count);
+                        if (idx >= old_count || new_variant_index >= (int)opt->values.size())
+                            continue;
                         if (old_values[idx]) //enabled
                             opt->values[new_variant_index] = old_values[idx];
                     }
@@ -10402,6 +10418,15 @@ int DynamicPrintConfig::update_values_from_multi_to_multi_2(const std::vector<st
         same_variant_indices.emplace_back(indices);
     }
 
+    //dst_values below is the destination PRINT preset's per-variant row, sized to its own
+    //print_extruder_variant; dst_extruder_variants is the PRINTER's list. They disagree until
+    //the print preset is re-selected, so size the row to the variant count before indexing it.
+    const size_t dst_variant_count = dst_extruder_variants.size();
+    if (dst_variant_count == 0) {
+        BOOST_LOG_TRIVIAL(error) << __FUNCTION__ << boost::format(", Line %1%: empty destination variant list")%__LINE__;
+        return -1;
+    }
+
     t_config_option_keys keys = this->keys();
     for(auto& key : keys){
         if(key_sets.find(key) == key_sets.end())
@@ -10417,7 +10442,13 @@ int DynamicPrintConfig::update_values_from_multi_to_multi_2(const std::vector<st
             {
                 ConfigOptionFloatsNullable* opt = this->option<ConfigOptionFloatsNullable>(key);
                 auto src_values = opt->values;
-                auto dst_values = dst_config.option<ConfigOptionFloatsNullable>(key) ->values;
+                const auto* dst_opt = dst_config.option<ConfigOptionFloatsNullable>(key);
+                if(!dst_opt){
+                    BOOST_LOG_TRIVIAL(warning) << __FUNCTION__ << boost::format(", Line %1%: %2% missing from destination config")%__LINE__%key;
+                    break;
+                }
+                auto dst_values = dst_opt->values;
+                dst_values.resize(dst_variant_count, ConfigOptionFloatsNullable::nil_value());
                 for(size_t dst_idx =0; dst_idx < same_variant_indices.size(); ++dst_idx){
                     auto& indices = same_variant_indices[dst_idx];
                     if(indices.empty())
@@ -10425,7 +10456,7 @@ int DynamicPrintConfig::update_values_from_multi_to_multi_2(const std::vector<st
                     bool has_value = false;
                     double target_value = std::numeric_limits<double>::max();
                     for(auto idx : indices){
-                        if(opt && idx < opt->values.size() && !opt->is_nil(idx)){
+                        if(idx < (int)opt->values.size() && !opt->is_nil(idx)){
                             has_value = true;
                             target_value = std::min(target_value, src_values[idx]);
                         }
@@ -10441,7 +10472,13 @@ int DynamicPrintConfig::update_values_from_multi_to_multi_2(const std::vector<st
             {
                 ConfigOptionFloatsOrPercentsNullable* opt = this->option<ConfigOptionFloatsOrPercentsNullable>(key);
                 auto src_values = opt->values;
-                auto dst_values = dst_config.option<ConfigOptionFloatsOrPercentsNullable>(key) ->values;
+                const auto* dst_opt = dst_config.option<ConfigOptionFloatsOrPercentsNullable>(key);
+                if(!dst_opt){
+                    BOOST_LOG_TRIVIAL(warning) << __FUNCTION__ << boost::format(", Line %1%: %2% missing from destination config")%__LINE__%key;
+                    break;
+                }
+                auto dst_values = dst_opt->values;
+                dst_values.resize(dst_variant_count, ConfigOptionFloatsOrPercentsNullable::nil_value());
                 for(size_t dst_idx =0; dst_idx < same_variant_indices.size(); ++dst_idx){
                     auto& indices = same_variant_indices[dst_idx];
                     if(indices.empty())
@@ -10449,7 +10486,7 @@ int DynamicPrintConfig::update_values_from_multi_to_multi_2(const std::vector<st
                     bool has_value = false;
                     FloatOrPercent target_value{9999.f, true};
                     for(auto idx : indices){
-                        if(opt && !opt->is_nil(idx)){
+                        if(idx < (int)opt->values.size() && !opt->is_nil(idx)){
                             has_value = true;
                             target_value = src_values[idx].value < target_value.value ? src_values[idx] : target_value;
                         }
@@ -10465,15 +10502,21 @@ int DynamicPrintConfig::update_values_from_multi_to_multi_2(const std::vector<st
             {
                 ConfigOptionBoolsNullable* opt = this->option<ConfigOptionBoolsNullable>(key);
                 auto src_values = opt->values;
-                auto dst_values = dst_config.option<ConfigOptionBoolsNullable>(key) ->values;
+                const auto* dst_opt = dst_config.option<ConfigOptionBoolsNullable>(key);
+                if(!dst_opt){
+                    BOOST_LOG_TRIVIAL(warning) << __FUNCTION__ << boost::format(", Line %1%: %2% missing from destination config")%__LINE__%key;
+                    break;
+                }
+                auto dst_values = dst_opt->values;
+                dst_values.resize(dst_variant_count, ConfigOptionBoolsNullable::nil_value());
                 for(size_t dst_idx =0; dst_idx < same_variant_indices.size(); ++dst_idx){
                     auto indices = same_variant_indices[dst_idx];
                     if(indices.empty())
                         continue;
                     bool has_value = false;
-                    bool target_value;
+                    bool target_value = false;
                     for(auto idx : indices){
-                        if(opt && !opt->is_nil(idx)){
+                        if(idx < (int)opt->values.size() && !opt->is_nil(idx)){
                             has_value = true;
                             target_value = src_values[idx];
                             break;

src/slic3r/GUI/ConfigManipulation.cpp

@@ -453,7 +453,7 @@ void ConfigManipulation::update_print_fff_config(DynamicPrintConfig* config, con
 
     if (config->opt_bool("alternate_extra_wall") &&
         (config->opt_enum<EnsureVerticalShellThickness>("ensure_vertical_shell_thickness") == evstAll)) {
-        wxString msg_text = _(L("Alternate extra wall does't work well when ensure vertical shell thickness is set to All."));
+        wxString msg_text = _(L("Alternate extra wall doesn't work well when ensure vertical shell thickness is set to All."));
 
         if (is_global_config)
             msg_text += "\n\n" + _(L("Change these settings automatically?\n"
@@ -642,7 +642,7 @@ void ConfigManipulation::update_print_fff_config(DynamicPrintConfig* config, con
 
     if (config->opt_enum<SeamScarfType>("seam_slope_type") != SeamScarfType::None &&
         config->get_abs_value("seam_slope_start_height") >= layer_height) {
-        const wxString     msg_text = _(L("seam_slope_start_height need to be smaller than layer_height.\nReset to 0."));
+        const wxString     msg_text = _(L("seam_slope_start_height needs to be smaller than layer_height.\nReset to 0."));
         MessageDialog      dialog(m_msg_dlg_parent, msg_text, "", wxICON_WARNING | wxOK);
         DynamicPrintConfig new_conf = *config;
         is_msg_dlg_already_exist    = true;
@@ -656,7 +656,7 @@ void ConfigManipulation::update_print_fff_config(DynamicPrintConfig* config, con
     float skin_depth = config->opt_float("skin_infill_depth");
     if (config->opt_float("infill_lock_depth") > skin_depth) {
         // xgettext:no-c-format, no-boost-format
-        const wxString     msg_text = _(L("Lock depth should smaller than skin depth.\nReset to 50% of skin depth."));
+        const wxString     msg_text = _(L("Lock depth should be smaller than skin depth.\nReset to 50% of skin depth."));
         MessageDialog      dialog(m_msg_dlg_parent, msg_text, "", wxICON_WARNING | wxOK);
         DynamicPrintConfig new_conf = *config;
         is_msg_dlg_already_exist    = true;

src/slic3r/Utils/FixModelByCgal.cpp

@@ -12,6 +12,7 @@
 
 #include "libslic3r/MeshBoolean.hpp"
 #include "libslic3r/Model.hpp"
+#include "libslic3r/Format/bbs_3mf.hpp"
 #include "libslic3r/format.hpp"
 #include "libslic3r/Thread.hpp"
 #include "../GUI/I18N.hpp"
@@ -69,6 +70,9 @@ public:
 // Returns false if fixing was canceled. fix_result contains error message if failed.
 bool fix_model_with_cgal_gui(ModelObject &model_object, int volume_idx, GUI::ProgressDialog &progress_dialog, const wxString &msg_header, std::string &fix_result, bool keep_painting)
 {
+    // Hold SaveObjectGaurd to prevent backup manager from racing concurrent mesh mutations (use-after-free).
+    SaveObjectGaurd backup_gaurd(model_object);
+
     // Orca: Synchronization primitives for progress updates between worker thread and GUI.
     std::mutex mtx;
     std::condition_variable condition;

tests/fff_print/test_cooling.cpp

@@ -2,7 +2,10 @@
 
 #include "test_helpers.hpp"
 
+#include <algorithm>
+#include <sstream>
 #include <string>
+#include <vector>
 
 using namespace Slic3r;
 using namespace Slic3r::Test;
@@ -25,3 +28,68 @@ TEST_CASE("Cooling consumes its internal speed markers", "[Cooling]")
     const std::string gcode = slice({ cube(20) }, { { "layer_height", 0.2 } });
     CHECK(gcode.find(";_EXTRUDE_SET_SPEED") == std::string::npos);
 }
+
+TEST_CASE("Overhang fan transitions do not depend on overhang speed", "[Cooling][Regression]")
+{
+    DynamicPrintConfig config = DynamicPrintConfig::full_print_config();
+    config.set_deserialize_strict({
+        { "bridge_speed",                   2.0 },
+        { "enable_arc_fitting",             false },
+        { "enable_overhang_bridge_fan",     true },
+        { "enable_overhang_speed",          false },
+        { "initial_layer_print_height",     0.3 },
+        { "inner_wall_speed",              30.0 },
+        { "layer_height",                   0.3 },
+        { "outer_wall_speed",              30.0 },
+        { "overhang_1_4_speed",            "30" },
+        { "overhang_2_4_speed",            "29" },
+        { "overhang_3_4_speed",             "6" },
+        { "overhang_4_4_speed",             "3" },
+        { "slow_down_for_layer_cooling",    false },
+        { "slowdown_for_curled_perimeters", false },
+    });
+    config.set_key_value("fan_max_speed", new ConfigOptionFloats{20.0});
+    config.set_key_value("fan_min_speed", new ConfigOptionFloats{20.0});
+    config.set_key_value("overhang_fan_speed", new ConfigOptionInts{100});
+    config.set_key_value("overhang_fan_threshold", new ConfigOptionEnumsGeneric{Overhang_threshold_2_4});
+    config.set_key_value("layer_change_gcode", new ConfigOptionString{";TEST_LAYER_Z=[layer_z]"});
+
+    const auto fan_commands = [](const std::string &gcode) {
+        std::vector<std::pair<std::string, std::string>> commands;
+        std::istringstream input(gcode);
+        std::string layer;
+        std::string line;
+        while (std::getline(input, line)) {
+            if (line.rfind(";TEST_LAYER_Z=", 0) == 0)
+                layer = line;
+            else if (!layer.empty() && (line.rfind("M106", 0) == 0 || line.rfind("M107", 0) == 0))
+                commands.emplace_back(layer, line);
+        }
+        return commands;
+    };
+    const auto feedrates = [](const std::string &gcode) {
+        std::vector<std::string> values;
+        std::istringstream input(gcode);
+        std::string word;
+        while (input >> word)
+            if (!word.empty() && word.front() == 'F')
+                values.push_back(word);
+        return values;
+    };
+
+    constexpr double sphere_radius = 50.0; // 100 mm diameter.
+    const std::string without_speed_gcode = slice({make_sphere(sphere_radius, PI / 24.0)}, config);
+    config.set_deserialize_strict({{"enable_overhang_speed", true}});
+    const std::string with_speed_gcode = slice({make_sphere(sphere_radius, PI / 24.0)}, config);
+
+    const auto without_speed_fan = fan_commands(without_speed_gcode);
+    const auto with_speed_fan = fan_commands(with_speed_gcode);
+    const auto without_speed_feedrates = feedrates(without_speed_gcode);
+    const auto with_speed_feedrates = feedrates(with_speed_gcode);
+
+    REQUIRE_FALSE(without_speed_fan.empty());
+    REQUIRE(std::any_of(without_speed_fan.begin(), without_speed_fan.end(),
+                        [](const auto &command) { return command.second.find("S255") != std::string::npos; }));
+    REQUIRE(with_speed_feedrates != without_speed_feedrates);
+    CHECK(with_speed_fan == without_speed_fan);
+}

tests/libslic3r/test_config_variant_expansion.cpp

@@ -479,3 +479,84 @@ TEST_CASE("update_values_to_printer_extruders_for_multiple_filaments resolves pe
         REQUIRE(config.option<ConfigOptionInts>("filament_self_index")->values == std::vector<int>({1, 2}));
     }
 }
+
+// update_values_from_multi_to_multi_2 walks the DESTINATION PRINTER's variant list while writing
+// into a row taken from the destination PRINT preset, whose arrays are sized to its own
+// print_extruder_variant. Those two widths disagree until the print preset is re-selected for the
+// new printer -- Tab::load_current_preset() runs this migration first -- so a project authored on
+// a single-variant printer, opened and switched to a wider one, wrote past the end of the row.
+TEST_CASE("update_values_from_multi_to_multi_2 sizes the destination row to the variant count",
+          "[Config][VariantExpansion]")
+{
+    const std::vector<std::string> src_variants{"Direct Drive Standard"};
+    const std::vector<std::string> dst_variants{"Direct Drive Standard", "Direct Drive High Flow",
+                                                "Direct Drive Standard", "Direct Drive High Flow"};
+    const std::set<std::string>    keys{"outer_wall_speed"};
+
+    // The per-object override as authored on the single-variant printer.
+    const auto object_override = [] {
+        DynamicPrintConfig c;
+        c.option<ConfigOptionFloatsNullable>("outer_wall_speed", true)->values = {42.};
+        return c;
+    };
+
+    SECTION("a row narrower than the variant list is grown, not overrun") {
+        DynamicPrintConfig object_config = object_override();
+        DynamicPrintConfig dst;
+        dst.option<ConfigOptionFloatsNullable>("outer_wall_speed", true)->values = {200.};
+
+        REQUIRE(object_config.update_values_from_multi_to_multi_2(src_variants, dst_variants, dst, keys) == 0);
+
+        const auto& out = object_config.option<ConfigOptionFloatsNullable>("outer_wall_speed")->values;
+        REQUIRE(out.size() == dst_variants.size());
+        // Both "Direct Drive Standard" columns match the source variant, so they take the override.
+        CHECK(out[0] == Catch::Approx(42.));
+        CHECK(out[2] == Catch::Approx(42.));
+        // The High Flow columns have no matching source variant: nil, so the destination keeps
+        // tracking the print preset rather than being pinned to another variant's value.
+        CHECK(std::isnan(out[1]));
+        CHECK(std::isnan(out[3]));
+    }
+
+    // The regression guard: where the row already matches the variant list -- every case that was
+    // not corrupting the heap -- the resize is a no-op and the output is unchanged.
+    SECTION("a correctly sized row is untouched") {
+        DynamicPrintConfig object_config = object_override();
+        DynamicPrintConfig dst;
+        dst.option<ConfigOptionFloatsNullable>("outer_wall_speed", true)->values = {200., 500., 210., 510.};
+
+        REQUIRE(object_config.update_values_from_multi_to_multi_2(src_variants, dst_variants, dst, keys) == 0);
+
+        const auto& out = object_config.option<ConfigOptionFloatsNullable>("outer_wall_speed")->values;
+        REQUIRE(out.size() == 4);
+        CHECK(out[0] == Catch::Approx(42.));    // matched -> override
+        CHECK(out[1] == Catch::Approx(500.));   // unmatched -> preset value preserved
+        CHECK(out[2] == Catch::Approx(42.));
+        CHECK(out[3] == Catch::Approx(510.));
+    }
+
+    // is_nil(idx) indexes values[idx] with no bounds check, so a source shorter than its own
+    // variant list read out of range before the guard was added.
+    SECTION("a source shorter than its variant list is read in range") {
+        DynamicPrintConfig object_config = object_override();   // one value...
+        DynamicPrintConfig dst;
+        dst.option<ConfigOptionFloatsNullable>("outer_wall_speed", true)->values = {200., 500.};
+
+        REQUIRE(object_config.update_values_from_multi_to_multi_2(
+            {"Direct Drive Standard", "Direct Drive Standard"},   // ...but two source variants
+            {"Direct Drive Standard", "Direct Drive High Flow"}, dst, keys) == 0);
+
+        const auto& out = object_config.option<ConfigOptionFloatsNullable>("outer_wall_speed")->values;
+        REQUIRE(out.size() == 2);
+        CHECK(out[0] == Catch::Approx(42.));
+        CHECK(out[1] == Catch::Approx(500.));
+    }
+
+    SECTION("an empty destination variant list is refused") {
+        DynamicPrintConfig object_config = object_override();
+        DynamicPrintConfig dst;
+        dst.option<ConfigOptionFloatsNullable>("outer_wall_speed", true)->values = {200.};
+
+        CHECK(object_config.update_values_from_multi_to_multi_2(src_variants, {}, dst, keys) == -1);
+    }
+}