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Add CI workflow to check Markdown files for problems
On every push and pull request that affects relevant files, and periodically, check the repository's Markdown files for problems: - Use markdownlint to check for common problems and formatting. - Use markdown-link-check to check for broken links. The Arduino tooling Markdown style is defined by the file. In the event the repository contains externally maintained Markdown files, markdownlint can be configured to ignore them via a file: https://github.com/igorshubovych/markdownlint-cli#ignoring-files markdown-link-check is configured via the file: https://github.com/tcort/markdown-link-check#config-file-format
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‎.github/workflows/check-markdown-task.yml

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# Source: https://github.com/arduino/tooling-project-assets/blob/main/workflow-templates/check-markdown-task.md
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name: Check Markdown
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env:
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# See: https://github.com/actions/setup-node/#readme
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NODE_VERSION: 12.x
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# See: https://docs.github.com/actions/using-workflows/events-that-trigger-workflows
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on:
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create:
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push:
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paths:
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- ".github/workflows/check-markdown-task.ya?ml"
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- ".markdown-link-check.json"
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- "package.json"
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- "package-lock.json"
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- "Taskfile.ya?ml"
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- "**/.markdownlint*"
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- "**.mdx?"
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- "**.mkdn"
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- "**.mdown"
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- "**.markdown"
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pull_request:
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paths:
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- ".github/workflows/check-markdown-task.ya?ml"
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- ".markdown-link-check.json"
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- "package.json"
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- "package-lock.json"
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- "Taskfile.ya?ml"
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- "**/.markdownlint*"
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- "**.mdx?"
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- "**.mkdn"
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- "**.mdown"
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- "**.markdown"
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schedule:
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# Run every Tuesday at 8 AM UTC to catch breakage caused by external changes.
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- cron: "0 8 * * TUE"
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workflow_dispatch:
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repository_dispatch:
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jobs:
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run-determination:
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runs-on: ubuntu-latest
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outputs:
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result: ${{ steps.determination.outputs.result }}
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steps:
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- name: Determine if the rest of the workflow should run
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id: determination
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run: |
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RELEASE_BRANCH_REGEX="refs/heads/[0-9]+.[0-9]+.x"
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# The `create` event trigger doesn't support `branches` filters, so it's necessary to use Bash instead.
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if [[
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"${{ github.event_name }}" != "create" ||
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"${{ github.ref }}" =~ $RELEASE_BRANCH_REGEX
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]]; then
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# Run the other jobs.
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RESULT="true"
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else
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# There is no need to run the other jobs.
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RESULT="false"
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fi
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echo "::set-output name=result::$RESULT"
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lint:
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needs: run-determination
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if: needs.run-determination.outputs.result == 'true'
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runs-on: ubuntu-latest
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steps:
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- name: Checkout repository
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uses: actions/checkout@v3
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- name: Setup Node.js
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uses: actions/setup-node@v3
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with:
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node-version: ${{ env.NODE_VERSION }}
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- name: Initialize markdownlint-cli problem matcher
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uses: xt0rted/markdownlint-problem-matcher@v1
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- name: Install Task
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uses: arduino/setup-task@v1
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with:
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repo-token: ${{ secrets.GITHUB_TOKEN }}
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version: 3.x
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- name: Lint
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run: task markdown:lint
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links:
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needs: run-determination
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if: needs.run-determination.outputs.result == 'true'
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runs-on: ubuntu-latest
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steps:
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- name: Checkout repository
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uses: actions/checkout@v3
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- name: Setup Node.js
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uses: actions/setup-node@v3
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with:
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node-version: ${{ env.NODE_VERSION }}
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- name: Install Task
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uses: arduino/setup-task@v1
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with:
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repo-token: ${{ secrets.GITHUB_TOKEN }}
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version: 3.x
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- name: Check links
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run: task --silent markdown:check-links

‎.markdown-link-check.json

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{
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"httpHeaders": [
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{
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"urls": ["https://docs.github.com/"],
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"headers": {
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"Accept-Encoding": "gzip, deflate, br"
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}
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}
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],
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"retryOn429": true,
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"retryCount": 3,
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"aliveStatusCodes": [200, 206]
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}

‎.markdownlint.yml

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# Source: https://github.com/arduino/tooling-project-assets/blob/main/workflow-templates/assets/check-markdown/.markdownlint.yml
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# See: https://github.com/DavidAnson/markdownlint/blob/main/doc/Rules.md
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# The code style defined in this file is the official standardized style to be used in all Arduino projects and should
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# not be modified.
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# Note: Rules disabled solely because they are redundant to Prettier are marked with a "Prettier" comment.
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default: false
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MD001: false
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MD002: false
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MD003: false # Prettier
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MD004: false # Prettier
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MD005: false # Prettier
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MD006: false # Prettier
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MD007: false # Prettier
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MD008: false # Prettier
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MD009:
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br_spaces: 0
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strict: true
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list_item_empty_lines: false # Prettier
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MD010: false # Prettier
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MD011: true
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MD012: false # Prettier
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MD013: false
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MD014: false
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MD018: true
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MD019: false # Prettier
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MD020: true
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MD021: false # Prettier
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MD022: false # Prettier
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MD023: false # Prettier
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MD024: false
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MD025:
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level: 1
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front_matter_title: '^\s*"?title"?\s*[:=]'
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MD026: false
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MD027: false # Prettier
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MD028: false
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MD029:
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style: one
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MD030:
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ul_single: 1
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ol_single: 1
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ul_multi: 1
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ol_multi: 1
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MD031: false # Prettier
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MD032: false # Prettier
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MD033: false
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MD034: false
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MD035: false # Prettier
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MD036: false
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MD037: true
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MD038: true
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MD039: true
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MD040: false
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MD041: false
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MD042: true
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MD043: false
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MD044: false
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MD045: true
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MD046:
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style: fenced
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MD047: false # Prettier

‎.markdownlintignore

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# Source: https://github.com/arduino/tooling-project-assets/blob/main/workflow-templates/assets/check-markdown/.markdownlintignore
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.licenses/
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__pycache__/
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node_modules/

‎README.md

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[![Check npm Dependencies status](https://github.com/arduino/setup-protoc/actions/workflows/check-npm-dependencies-task.yml/badge.svg)](https://github.com/arduino/setup-protoc/actions/workflows/check-npm-dependencies-task.yml)
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![test](https://github.com/arduino/setup-protoc/workflows/test/badge.svg)
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[![Sync Labels status](https://github.com/arduino/setup-protoc/actions/workflows/sync-labels-npm.yml/badge.svg)](https://github.com/arduino/setup-protoc/actions/workflows/sync-labels-npm.yml)
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[![Check Markdown status](https://github.com/arduino/setup-protoc/actions/workflows/check-markdown-task.yml/badge.svg)](https://github.com/arduino/setup-protoc/actions/workflows/check-markdown-task.yml)
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This action makes the `protoc` compiler available to Workflows.
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‎Taskfile.yml

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desc: Install dependencies managed by npm
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cmds:
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- npm install
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docs:generate:
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desc: Create all generated documentation content
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# This is an "umbrella" task used to call any documentation generation processes the project has.
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# It can be left empty if there are none.
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# Source: https://github.com/arduino/tooling-project-assets/blob/main/workflow-templates/assets/check-markdown-task/Taskfile.yml
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markdown:check-links:
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desc: Check for broken links
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deps:
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- task: docs:generate
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- task: npm:install-deps
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cmds:
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- |
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if [[ "{{.OS}}" == "Windows_NT" ]]; then
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# npx --call uses the native shell, which makes it too difficult to use npx for this application on Windows,
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# so the Windows user is required to have markdown-link-check installed and in PATH.
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if ! which markdown-link-check &>/dev/null; then
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echo "markdown-link-check not found or not in PATH. Please install: https://github.com/tcort/markdown-link-check#readme"
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exit 1
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fi
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# Default behavior of the task on Windows is to exit the task when the first broken link causes a non-zero
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# exit status, but it's better to check all links before exiting.
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set +o errexit
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STATUS=0
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# Using -regex instead of -name to avoid Task's behavior of globbing even when quoted on Windows
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# The odd method for escaping . in the regex is required for windows compatibility because mvdan.cc/sh gives
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# \ characters special treatment on Windows in an attempt to support them as path separators.
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for file in $(
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find . \
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-type d -name '.git' -prune -o \
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-type d -name '.licenses' -prune -o \
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-type d -name '__pycache__' -prune -o \
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-type d -name 'node_modules' -prune -o \
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-regex ".*[.]md" -print
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); do
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markdown-link-check \
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--quiet \
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--config "./.markdown-link-check.json" \
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"$file"
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STATUS=$(( $STATUS + $? ))
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done
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exit $STATUS
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else
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npx --package=markdown-link-check --call='
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STATUS=0
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for file in $(
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find . \
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-type d -name '.git' -prune -o \
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-type d -name '.licenses' -prune -o \
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-type d -name '__pycache__' -prune -o \
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-type d -name 'node_modules' -prune -o \
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-regex ".*[.]md" -print
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); do
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markdown-link-check \
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--quiet \
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--config "./.markdown-link-check.json" \
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"$file"
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STATUS=$(( $STATUS + $? ))
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done
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exit $STATUS
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'
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fi
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# Source: https://github.com/arduino/tooling-project-assets/blob/main/workflow-templates/assets/check-markdown-task/Taskfile.yml
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markdown:fix:
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desc: Automatically correct linting violations in Markdown files where possible
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deps:
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- task: npm:install-deps
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cmds:
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- npx markdownlint-cli --fix "**/*.md"
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# Source: https://github.com/arduino/tooling-project-assets/blob/main/workflow-templates/assets/check-markdown-task/Taskfile.yml
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markdown:lint:
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desc: Check for problems in Markdown files
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deps:
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- task: npm:install-deps
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cmds:
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- npx markdownlint-cli "**/*.md"

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