make lint-md failing for v16.x-staging in GitHub actions

[targos]

See https://github.com/nodejs/node/runs/3399539405

I don't understand what the error is about and I cannot reproduce it locally.

[targos]

@Trott maybe it's related to the recent markdown linter updates?

[aduh95]

lint-md should skip the check for release version number in changelog on branches that are not master, so there something wrong with this check:

node/.github/workflows/linters.yml

Lines 55 to 58 in af45be7

	- name: Get release version numbers
	if: ${{ github.event.pull_request.base.ref == github.event.pull_request.base.repo.default_branch }}
	id: get-released-versions
	run: ./tools/node-lint-md-cli-rollup/src/list-released-versions-from-changelogs.mjs

To reproduce locally, you would need to pass the list of released version numbers as an environment variable; it would be worth adding a make command to do it easily, but currently you need to copy/paste the list manually (or come up with a clever sed command that does it for you):

$ tools/node-lint-md-cli-rollup/src/list-released-versions-from-changelogs.mjs
::set-output name=NODE_RELEASED_VERSIONS::9.11.2,...,0.12.0
$ NODE_RELEASED_VERSIONS="9.11.2,...,0.12.0" make lint-md

[Trott]

It's complaining about v14.17.0 in this YAML block in doc/api/http.md:

<!-- YAML
added: v0.3.6
changes:
  - version: v16.7.0
    pr-url: https://github.com/nodejs/node/pull/39310
    description: When using a `URL` object parsed username and
                 password will now be properly URI decoded.
  - version:
      - v15.3.0
      - v14.17.0
    pr-url: https://github.com/nodejs/node/pull/36048
    description: It is possible to abort a request with an AbortSignal.
  - version:
     - v13.8.0
     - v12.15.0
     - v10.19.0
    pr-url: https://github.com/nodejs/node/pull/31448
    description: The `insecureHTTPParser` option is supported now.
  - version: v13.3.0
    pr-url: https://github.com/nodejs/node/pull/30570
    description: The `maxHeaderSize` option is supported now.
  - version: v10.9.0
    pr-url: https://github.com/nodejs/node/pull/21616
    description: The `url` parameter can now be passed along with a separate
                 `options` object.
  - version: v7.5.0
    pr-url: https://github.com/nodejs/node/pull/10638
    description: The `options` parameter can be a WHATWG `URL` object.
-->

[Trott]

I think cherry-picking 16e00a1 will fix the lint issue but I don't know if it will land cleanly and I don't know if cherry-picking those kinds of commits is part of the usual release process.

[targos]

We don't cherry-pick release commits between release branches.
I think @aduh95 is right and the problem is that this check is done when it's not supposed to be.

[Trott]

We don't cherry-pick release commits between release branches.
I think @aduh95 is right and the problem is that this check is done when it's not supposed to be.

Yeah, I'd be for not doing that check on staging/release branches etc.

[targos]

I suspect that the condition github.event.pull_request.base.ref == github.event.pull_request.base.repo.default_branch previously evaluated to false for non-pull request events but GitHub changed something and now it evaluates to true.