From 4b3bc35bc81d92f8741e975b61e5443ba8f2d154 Mon Sep 17 00:00:00 2001
From: Devin Dooley <dooleydevin@github.com>
Date: Fri, 13 Nov 2026 16:29:13 -0800
Subject: [PATCH 1/4] Add gitignore template linter

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>
---
 .github/workflows/gitignore-formatting.yml | 53 ++++++++++++++++++++++
 1 file changed, 53 insertions(+)
 create mode 100644 .github/workflows/gitignore-formatting.yml

diff --git a/.github/workflows/gitignore-formatting.yml b/.github/workflows/gitignore-formatting.yml
new file mode 100644
index 00000000..aafecb02
--- /dev/null
+++ b/.github/workflows/gitignore-formatting.yml
@@ -0,0 +1,53 @@
+name: Gitignore formatting
+
+on:
+  pull_request:
+  workflow_dispatch:
+
+permissions:
+  contents: read
+
+jobs:
+  formatting:
+    name: Check gitignore formatting
+    runs-on: ubuntu-latest
+    timeout-minutes: 5
+
+    steps:
+      - name: Check out repository
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+        with:
+          persist-credentials: false
+
+      - name: Set up Python
+        uses: actions/setup-python@6d4fd22b20465ccc0f7354476588e8df7c9ca0e0 # v7.1.0
+        with:
+          python-version: "3.15.2"
+
+      - name: Install formatting tools
+        run: python -m pip install pre-commit-hooks==6.0.0
+
+      - name: Check all gitignore files recursively
+        shell: bash
+        run: |
+          git ls-files -z -- ':(top,glob)**/*.gitignore' > "$RUNNER_TEMP/gitignore-files"
+          mapfile -d '' -t files < "$RUNNER_TEMP/gitignore-files"
+
+          if (( ${#files[@]} == 0 )); then
+            echo "::error::No gitignore files found."
+            exit 1
+          fi
+
+          echo "Checking ${#files[@]} gitignore files."
+
+          status=0
+          mixed-line-ending --fix=lf -- "${files[@]}" || status=1
+          trailing-whitespace-fixer -- "${files[@]}" || status=1
+          end-of-file-fixer -- "${files[@]}" || status=1
+
+          if (( status != 0 )); then
+            echo "::error::Formatting checks failed. See tool output and diff below."
+            git --no-pager diff --no-ext-diff -- "${files[@]}"
+          fi
+
+          exit "$status"

From 5686bb8cb6d53fa30a1092cb920c5b841424f93e Mon Sep 17 00:00:00 2001
From: Devin Dooley <dooleydevin@github.com>
Date: Fri, 13 Nov 2026 16:36:46 -0800
Subject: [PATCH 2/4] Preserve literal carriage returns with dos2unix

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>
---
 .github/workflows/gitignore-formatting.yml | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/.github/workflows/gitignore-formatting.yml b/.github/workflows/gitignore-formatting.yml
index aafecb02..a7d33532 100644
--- a/.github/workflows/gitignore-formatting.yml
+++ b/.github/workflows/gitignore-formatting.yml
@@ -27,6 +27,11 @@ jobs:
       - name: Install formatting tools
         run: python -m pip install pre-commit-hooks==6.0.0
 
+      - name: Install dos2unix
+        run: |
+          sudo apt-get update
+          sudo apt-get install --yes dos2unix
+
       - name: Check all gitignore files recursively
         shell: bash
         run: |
@@ -41,13 +46,14 @@ jobs:
           echo "Checking ${#files[@]} gitignore files."
 
           status=0
-          mixed-line-ending --fix=lf -- "${files[@]}" || status=1
+          dos2unix --keep-bom -- "${files[@]}" || status=1
           trailing-whitespace-fixer -- "${files[@]}" || status=1
           end-of-file-fixer -- "${files[@]}" || status=1
 
+          git --no-pager diff --no-ext-diff --exit-code -- "${files[@]}" || status=1
+
           if (( status != 0 )); then
-            echo "::error::Formatting checks failed. See tool output and diff below."
-            git --no-pager diff --no-ext-diff -- "${files[@]}"
+            echo "::error::Formatting checks failed. See tool output and diff above."
           fi
 
           exit "$status"

From 850bb5152cc16c4d0240807992a4cbfdc233caec Mon Sep 17 00:00:00 2001
From: Devin Dooley <dooleydevin@github.com>
Date: Fri, 13 Nov 2026 16:38:24 -0800
Subject: [PATCH 3/4] Fix existing template formatting violations

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>
---
 R.gitignore             | 2 +-
 TouchDesigner.gitignore | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/R.gitignore b/R.gitignore
index dcfb5ebd..a71206e9 100644
--- a/R.gitignore
+++ b/R.gitignore
@@ -49,7 +49,7 @@ po/*~
 # RStudio Connect folder
 rsconnect/
 
-# compiled code 
+# compiled code
 src/*.o
 src/*.so
 src/*.dll
diff --git a/TouchDesigner.gitignore b/TouchDesigner.gitignore
index c8b34bf2..6d1a7dba 100644
--- a/TouchDesigner.gitignore
+++ b/TouchDesigner.gitignore
@@ -19,4 +19,4 @@
 # Python / build artifacts
 __pycache__/
 *.pyc
-*.pyo
\ No newline at end of file
+*.pyo

From bebe9094f0a65b2e1119974eb55d8eb90895c359 Mon Sep 17 00:00:00 2001
From: Devin Dooley <dooleydevin@github.com>
Date: Fri, 13 Nov 2026 16:40:41 -0800
Subject: [PATCH 4/4] Reduce dos2unix log noise while preserving failure
 diagnostics

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>
---
 .github/workflows/gitignore-formatting.yml | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/.github/workflows/gitignore-formatting.yml b/.github/workflows/gitignore-formatting.yml
index a7d33532..3fcde2ea 100644
--- a/.github/workflows/gitignore-formatting.yml
+++ b/.github/workflows/gitignore-formatting.yml
@@ -46,7 +46,10 @@ jobs:
           echo "Checking ${#files[@]} gitignore files."
 
           status=0
-          dos2unix --keep-bom -- "${files[@]}" || status=1
+          if ! dos2unix --keep-bom -- "${files[@]}" > "$RUNNER_TEMP/dos2unix.log" 2>&1; then
+            cat "$RUNNER_TEMP/dos2unix.log" >&2
+            status=1
+          fi
           trailing-whitespace-fixer -- "${files[@]}" || status=1
           end-of-file-fixer -- "${files[@]}" || status=1