Listen to "synchronize" pull_request action

[gr2m]

Hey @hiimbex 👋

right now the app only listens to the "open" action

markdownify/index.js

Line 2 in f83012e

app.on('pull_request.opened', async context => {

After installing the app, I’d expect that the app would also listen to the "synchronize" action as a markdown file could be added / removed over time in a pull request?

Happy to send a PR if you’d like that

[hiimbex]

I thought of this too @gr2m but haven't gotten around to implementing yet! PRs welcome :D

[ChrisMM]

@hiimbex @gr2m I think this is the same issue, but admittedly I'm not as technical:

Steps

1. Created a PR that had one new .md file changed (added) in the branch
2. Updated a README.md to point to newly-created .md file

Expected
Updated README.md would be added to "View rendered" list in PR description

Actual
Updated README.md is not added in PR description in "View rendered" list; only one new .md file changed (added) in the branch is shown

[hiimbex]

Yup! That's exactly the issue @ChrisMM. And ideally we'd filter out linked to files that are completely removed as well; right now we're only looking for edited/changed which could include an entire removal.