"Johannes Schindelin via GitGitGadget" <gitgitgadget@xxxxxxxxx> writes: > + sed 's/^\(\([^ ]*\):\([0-9]*\):\([0-9]*:\) \)\(error\|warning\): /::\5 file=\2 line=\3::\1/' https://docs.github.com/en/actions/using-workflows/workflow-commands-for-github-actions#setting-a-warning-message seems to use comma as field separator, not SP, for files and lines. We'll see if they are equivalent without getting documented soon, as I will be adding this to my tree for 'seen' today. We should throw a build failure in to see its effect ;-)