When an annotation is appended to, the markdown is not re-processed.

[petemounce]

Context: https://buildkite-community.slack.com/archives/C02T53V9H/p1525792493000374

Tried

Pipeline has several steps that run in parallel.

pre-command hook that does roughly:

echo "* some bullet point" >> annotation.md
cat annotation | buildkite-agent annotate --context build-logs --style info --append

Expected

Annotation gets appended to, creating a list with one rendered bullet per step, creating

* some bullet point
* some bullet point
* some bullet point

Actual

Annotation gets appended to, but markdown is not re-rendered inside web-UI, creating

* some bullet point*some bullet point*some bullet point

Notes

I tried echo -e, adding \n at beginning/end of echo commands - no difference in outcome.

Agent 3.1.1

[ticky]

Hmm, it looks like Markdown is indeed processed, however, the Buildkite Agent trims whitespace, and when appending we do not put line break in between, meaning it’s impossible to put a line break in between annotation chunks.

I’ll look into what we can do to fix this. :)

[petemounce]

Would it be reasonable to read STDIN via bufio's line reader instead of ioutil?

[keithpitt]

I think I'd be just OK with removing the whitespace trimming from the agent altogether! It probably does more harm than good (and this is a good example). I'd happily accept a PR @petemounce :)

[petemounce]

Pretty sure this is fixed via buildkite/agent#766.

[ngocpea]

Not sure if right place, but i noticed this issue is still present when using --append.