Correctly handle cases when BASE SHA isn't known on push events 
#196
Conversation
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
If the first commit is pushed to a new branch, `${{ github.event.before }}` has a default value of `0000000000000000000000000000000000000000`.
When we detect such SHA, we should try to get older `BASE` SHA from the `HEAD` branch if possible.
Inspired by:
* [How can I get the previous commit before a push or merge in GitHub Action workflow? - Answered by Peter Evans](https://stackoverflow.com/a/61861763/10221282)
* [tj-actions/changed-files GitHub Action](https://github.com/tj-actions/changed-files/blob/main/diff-sha.sh#L116-L118)
![github-advanced-security[bot]](https://avatars.githubusercontent.com/in/57789?s=60&v=4){kind=small}
| assert_success | ||
| assert_output \ | ||
| "first commit on new branch detected | ||
| BASE:\"${TRUE_BASE}\" ; HEAD:\"${INPUT_PUSH_EVENT_HEAD}\"" |
Check warning
Code scanning / shellcheck
TRUE_BASE is referenced but not assigned.
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
If the first commit is pushed to a new branch,
${{ github.event.before }}has a default value of0000000000000000000000000000000000000000.When we detect such SHA, we should try to get older
BASESHA from theHEADbranch if possible.Inspired by: