Fix release workflow: guard folded scalars against CRLF

GitHub Actions on Windows writes temp scripts with \r\n. Cygwin
bash treats \r as part of the last argument — ninja rejects -j4\r
as "invalid -j parameter".

Fix: plain scalars for one-line commands (matching CI pattern),
and && echo . trailers on > folded blocks so \r lands harmlessly
on echo's argument. Add CRLF diagnostic step to confirm the theory.

Author: phdye

.github/workflows/release.yml

@@ -35,34 +35,39 @@ jobs:
             ninja
             curl
 
+      # Diagnostic: check whether GitHub Actions adds \r to temp scripts
+      - name: CRLF diagnostic
+        run: >
+          od -c "$0" | tail -3 && echo .
+
       - name: Build environment
         run: >
           echo "GCC=$(g++ -dumpfullversion) CMake=$(cmake --version | head -1) Cygwin=$(uname -r) CWD=$(pwd)"
+          && echo .
 
       - name: Download GoogleTest
         run: >
           curl -fL -o gtest.tar.gz https://github.com/google/googletest/archive/refs/tags/v1.16.0.tar.gz
-          && echo "Downloaded $(ls -la gtest.tar.gz)"
+          && ls -l gtest.tar.gz
           && tar xzf gtest.tar.gz
           && mv googletest-1.16.0 googletest-src
-          && echo "Extracted: $(ls -d googletest-src)"
+          && ls -d googletest-src
+          && echo .
 
       - name: Configure GoogleTest
         run: >
-          echo "CWD=$(pwd) src=$(ls -d googletest-src)"
-          && cmake -S googletest-src -B gtest-build -G Ninja
+          cmake -S googletest-src -B gtest-build -G Ninja
           -DCMAKE_CXX_STANDARD=17
           -DCMAKE_BUILD_TYPE=Release
           -DCMAKE_CXX_FLAGS="-D_GLIBCXX_USE_CXX11_ABI=1"
           -DCMAKE_INSTALL_PREFIX="$PWD/staging/usr/local/lib/absl/vendor"
+          && echo .
 
       - name: Build GoogleTest
-        run: >
-          ninja -C gtest-build -j4
+        run: ninja -C gtest-build -j4
 
       - name: Install GoogleTest
-        run: >
-          cmake --install gtest-build
+        run: cmake --install gtest-build
 
       - name: Configure Abseil
         run: >
@@ -74,31 +79,34 @@ jobs:
           -DABSL_BUILD_TESTING=ON
           -DABSL_USE_EXTERNAL_GOOGLETEST=ON
           -DABSL_FIND_GOOGLETEST=ON
+          && echo .
 
       - name: Build Abseil
-        run: >
-          ninja -C build -j4
+        run: ninja -C build -j4
 
       - name: Test
-        run: >
-          ctest --test-dir build --timeout 300 --output-on-failure
+        run: ctest --test-dir build --timeout 300 --output-on-failure
 
       - name: Install Abseil
         run: >
           cmake --install build --prefix "$PWD/staging/usr/local"
+          && echo .
 
       - name: Patch abslConfig.cmake for vendored GoogleTest
         run: >
           printf '\n# Vendored GoogleTest for test helper targets (scoped_mock_log, status_matchers)\nif(NOT TARGET GTest::gtest)\n  find_package(GTest QUIET HINTS "${CMAKE_CURRENT_LIST_DIR}/../../absl/vendor/lib/cmake/GTest")\nendif()\n'
           >> staging/usr/local/lib/cmake/absl/abslConfig.cmake
+          && echo .
 
       - name: Package
         run: >
           tar czf "abseil-cpp-$GITHUB_REF_NAME-x86_64.tar.gz" -C staging usr
+          && echo .
 
       - name: Checksum
         run: >
           sha256sum "abseil-cpp-$GITHUB_REF_NAME-x86_64.tar.gz" | tee checksums-sha256.txt
+          && echo .
 
       - name: Create release notes
         run: >
@@ -146,6 +154,7 @@ jobs:
           "These binaries support the Cygwin port of Protocol Buffers 7.35.0 at"
           "[phdye-cygwin/protobuf](https://github.com/phdye-cygwin/protobuf)."
           > release-notes.md
+          && echo .
 
       - name: Publish release
         shell: bash