There is currently a way to trigger based on filtering the branch name, it would be handy to trigger based on the commit message text (BUILDKITE_MESSAGE) as well.
I was working on an automated VERSION file update step, which works great…except that when BK does the git push, that triggers another build…which updates the VERSION file again, lather, rinse repeat. One way to get around that would be to have the commit message contain the string ‘NOTRIGGER’ or something, and then use that keyword to avoid triggering a new build.
@patmantru 
would something like this work? https://buildkite.com/docs/pipelines/conditionals
Perhaps this:
steps:
- trigger: "..."
if: "build.message !~ /NOTRIGGER/"
Hmm…possibly, will give that a shot!
I was able to use the IF conditional in a different way to do what I wanted to do… Instead of using it to gate the triggering, I used it to control if the individual steps in the existing pipeline.yml got executed. A bit awkward to check at every step, but it got the job done. I think there was another feature request for ‘skip the rest of the steps’, which would be handy in this situation too.