Support thread_ts for threaded updates to a single topic

[nsandary]

Description

Describe your issue here.

What type of issue is this? (place an x in one of the [ ])

• bug
• enhancement (feature request)
• question
• documentation related
• example code related
• testing related
• discussion

Requirements (place an x in each of the [ ])

• I've read and understood the Contributing guidelines and have done my best effort to follow them.
• I've read and agree to the Code of Conduct.
• I've searched for any related issues and avoided creating a duplicate issue.

---

I would like the ability to gather updates from a long build+deploy process into a single thread. I'd love to use this (or a similar) pre-built action to accomplish this, but I don't see any support (input parameter?) for thread_ts. I know the Slack API supports that functionality; is it possible to extend this GitHub Action to leverage that feature?

[nsandary]

Sorry, I did an additional search for closed topics and I see this has been discussed before.

[e.g. #75 #119]

[nsandary]

Perhaps this is something that could be included in the documentation (a search for "thread" in README.md returns 0 hits).

[WilliamBergamin]

Hi @nsandary thanks for writing in!

Good point, adding documentation for this would be good 👍

[kalverra]

Seconded. It took me a while to figure this out after going through official docs. I also imagine it's a common enough use case where making thread_ts a standard input would also be handy.

[nsandary]

Just wanted to circle back and say thank you for completing this @WilliamBergamin! Very helpful! :-)