Avoid platform-specific code in markdown:check-links task

Taskfile.yml

@@ -318,46 +318,39 @@ tasks:
   # Source: https://github.com/arduino/tooling-project-assets/blob/main/workflow-templates/assets/check-markdown-task/Taskfile.yml
   markdown:check-links:
     desc: Check for broken links
+    vars:
+      # The command is defined in a Taskfile variable to allow it to be broken into multiple lines for readability.
+      # This can't be done in the `cmd` object of the Taskfile because `npx --call` uses the native shell, which causes
+      # standard newline escaping syntax to not work when the task is run on Windows.
+      #
+      # Using -regex instead of -name to avoid Task's behavior of globbing even when quoted on Windows
+      # The odd method for escaping . in the regex is required for windows compatibility because mvdan.cc/sh gives
+      # \ characters special treatment on Windows in an attempt to support them as path separators.
+      #
+      # prettier-ignore
+      CHECK_LINKS_COMMAND:
+        "
+          find . \
+            -type d -name \".git\" -prune -o \
+            -type d -name \".licenses\" -prune -o \
+            -type d -name \"__pycache__\" -prune -o \
+            -type d -name \"node_modules\" -prune -o \
+            -regex \".*[.]md\" \
+            -exec \
+              markdown-link-check \
+                --quiet \
+                --config \"./.markdown-link-check.json\" \
+                \\{\\} \
+                +
+        "
     deps:
       - task: docs:generate
       - task: npm:install-deps
     cmds:
       - |
-        if [[ "{{.OS}}" == "Windows_NT" ]]; then
-          # npx --call uses the native shell, which makes it too difficult to use npx for this application on Windows,
-          # so the Windows user is required to have markdown-link-check installed and in PATH.
-          if ! which markdown-link-check &>/dev/null; then
-            echo "markdown-link-check not found or not in PATH. Please install: https://github.com/tcort/markdown-link-check#readme"
-            exit 1
-          fi
-          # Default behavior of the task on Windows is to exit the task when the first broken link causes a non-zero
-          # exit status, but it's better to check all links before exiting.
-          set +o errexit
-          STATUS=0
-          # Using -regex instead of -name to avoid Task's behavior of globbing even when quoted on Windows
-          # The odd method for escaping . in the regex is required for windows compatibility because mvdan.cc/sh gives
-          # \ characters special treatment on Windows in an attempt to support them as path separators.
-          for file in $(find . -regex ".*[.]md"); do
-            markdown-link-check \
-              --quiet \
-              --config "./.markdown-link-check.json" \
-              "$file"
-            STATUS=$(( $STATUS + $? ))
-          done
-          exit $STATUS
-        else
-          npx --package=markdown-link-check --call='
-            STATUS=0
-            for file in $(find . -regex ".*[.]md"); do
-              markdown-link-check \
-                --quiet \
-                --config "./.markdown-link-check.json" \
-                "$file"
-              STATUS=$(( $STATUS + $? ))
-            done
-            exit $STATUS
-          '
-        fi
+        npx \
+          --package=markdown-link-check \
+          --call='{{.CHECK_LINKS_COMMAND}}'
 
   # Source: https://github.com/arduino/tooling-project-assets/blob/main/workflow-templates/assets/check-markdown-task/Taskfile.yml
   markdown:fix: