diff --git a/.gitattributes b/.gitattributes
index 2e976e5f9..5a1f693b5 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -1,3 +1,47 @@
+#--------------------------------------------------------------------
+# Line endings
+#--------------------------------------------------------------------
+# Source code - always LF
+*.zig text eol=lf
+*.c text eol=lf
+*.h text eol=lf
+*.cpp text eol=lf
+*.m text eol=lf
+*.swift text eol=lf
+*.py text eol=lf
+*.sh text eol=lf
+
+# Config/build files - always LF
+*.zon text eol=lf
+*.nix text eol=lf
+*.md text eol=lf
+*.json text eol=lf
+*.yml text eol=lf
+*.yaml text eol=lf
+*.toml text eol=lf
+CMakeLists.txt text eol=lf
+*.cmake text eol=lf
+Makefile text eol=lf
+
+# Text data files - always LF (embedded in Zig, parsed with \n split)
+*.txt text eol=lf
+
+# Windows resource files - preserve as-is (native Windows tooling)
+*.rc -text
+*.manifest -text
+
+# Binary files
+*.png binary
+*.ico binary
+*.icns binary
+*.ttf binary
+*.otf binary
+*.glsl binary
+*.blp binary
+
+#--------------------------------------------------------------------
+# Linguist
+#--------------------------------------------------------------------
 build.zig.zon.nix linguist-generated=true
 build.zig.zon.txt linguist-generated=true
 build.zig.zon.json linguist-generated=true
@@ -12,4 +56,3 @@ src/font/nerd_font_attributes.zig linguist-generated=true
 src/font/nerd_font_codepoint_tables.py linguist-generated=true
 src/font/res/** linguist-vendored
 src/terminal/res/** linguist-vendored
-src/terminal/res/rgb.txt -text
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 588237368..01f30664f 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -109,6 +109,7 @@ jobs:
       - test-fuzz-libghostty
       - test-lib-vt
       - test-macos
+      - test-windows
       - pinact
       - prettier
       - swiftlint
@@ -1112,6 +1113,21 @@ jobs:
       - name: test
         run: nix develop -c zig build test --system ${{ steps.deps.outputs.deps }}
 
+  test-windows:
+    if: github.repository == 'ghostty-org/ghostty' && needs.skip.outputs.skip != 'true'
+    needs: skip
+    runs-on: namespace-profile-ghostty-windows
+    timeout-minutes: 45
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+
+      - name: Setup Zig
+        uses: mlugg/setup-zig@d1434d08867e3ee9daa34448df10607b98908d29 # v2.2.1
+
+      - name: Test
+        run: zig build -Dapp-runtime=none test
+
   test-i18n:
     strategy:
       fail-fast: false
diff --git a/src/font/sprite/draw/symbols_for_legacy_computing_supplement.zig b/src/font/sprite/draw/symbols_for_legacy_computing_supplement.zig
index bd91d3925..46c7165a8 100644
--- a/src/font/sprite/draw/symbols_for_legacy_computing_supplement.zig
+++ b/src/font/sprite/draw/symbols_for_legacy_computing_supplement.zig
@@ -102,7 +102,14 @@ pub fn draw1CD00_1CDE5(
 
         const data = @embedFile("octants.txt");
         var it = std.mem.splitScalar(u8, data, '\n');
-        while (it.next()) |line| {
+        while (it.next()) |raw_line| {
+            // Trim \r so this works with both LF and CRLF line endings,
+            // since git may convert octants.txt to CRLF on Windows checkouts.
+            const line = if (raw_line.len > 0 and raw_line[raw_line.len - 1] == '\r')
+                raw_line[0 .. raw_line.len - 1]
+            else
+                raw_line;
+
             // Skip comments
             if (line.len == 0 or line[0] == '#') continue;