Expose an actual SHA for pull requests as CI_PR_SHA(_SHORT).

.github/workflows/demo.yml

@@ -28,6 +28,8 @@ jobs:
           echo "CI_BASE_REF=$CI_BASE_REF"
           echo "CI_SHA_SHORT=$CI_SHA_SHORT"
           echo "CI_SHA=$CI_SHA"
+          echo "CI_PR_SHA_SHORT=$CI_PR_SHA_SHORT"
+          echo "CI_PR_SHA=$CI_PR_SHA"
           echo "CI_PR_NUMBER=$CI_PR_NUMBER"
           echo "CI_PR_ID=$CI_PR_ID"
           echo "CI_PR_TITLE=$CI_PR_TITLE"
@@ -77,6 +79,8 @@ jobs:
           echo "CI_BASE_REF=$Env:CI_BASE_REF"
           echo "CI_SHA_SHORT=$Env:CI_SHA_SHORT"
           echo "CI_SHA=$Env:CI_SHA"
+          echo "CI_PR_SHA_SHORT=$Env:CI_PR_SHA_SHORT"
+          echo "CI_PR_SHA=$Env:CI_PR_SHA"
           echo "CI_PR_NUMBER=$Env:CI_PR_NUMBER"
           echo "CI_PR_ID=$Env:CI_PR_ID"
           echo "CI_PR_TITLE=$Env:CI_PR_TITLE"
@@ -126,6 +130,8 @@ jobs:
           echo "CI_BASE_REF=$CI_BASE_REF"
           echo "CI_SHA_SHORT=$CI_SHA_SHORT"
           echo "CI_SHA=$CI_SHA"
+          echo "CI_PR_SHA_SHORT=$CI_PR_SHA_SHORT"
+          echo "CI_PR_SHA=$CI_PR_SHA"
           echo "CI_PR_NUMBER=$CI_PR_NUMBER"
           echo "CI_PR_ID=$CI_PR_ID"
           echo "CI_PR_TITLE=$CI_PR_TITLE"

Makefile

@@ -1,15 +1,19 @@
+.PHONY: help
+help:  ## Show this help.
+	@egrep '^[a-zA-Z_-]+:.*?## .*$$' $(MAKEFILE_LIST) | sort | awk 'BEGIN {FS = ":.*?## "}; {printf "\033[36m%-22s\033[0m %s\n", $$1, $$2}'
+
 .PHONY: install
-install:
+install:  ## Install dependencies.
 	npm install
 
 .PHONY: lint
-lint:
+lint:  ## Lint code.
 	npm run lint
 
 .PHONY: test
-test:
+test:  ## Run tests.
 	npm run test
 
 .PHONY: build
-build:
+build:  ## Build code for distribution.
 	npm run build

README.md

@@ -2,7 +2,7 @@
 
 [![GitHub Action: View on Marketplace](https://img.shields.io/badge/GitHub%20Action-View_on_Marketplace-28a745?logo=github)](https://github.com/marketplace/actions/github-environment-variables-action)
 [![Demo: available](https://img.shields.io/badge/Demo-available-orange)](.github/workflows/demo.yml)
-[![Version: v2.4.0](https://img.shields.io/badge/Version-v2.4.0-brightgreen)](https://github.com/FranzDiebold/github-env-vars-action/releases/tag/v2.4.0)
+[![Version: v2.5.0](https://img.shields.io/badge/Version-v2.5.0-brightgreen)](https://github.com/FranzDiebold/github-env-vars-action/releases/tag/v2.5.0)
 [![Lint and Test](https://github.com/FranzDiebold/github-env-vars-action/workflows/Lint%20and%20Test/badge.svg)](https://github.com/FranzDiebold/github-env-vars-action/actions?query=workflow%3A%22Lint+and+Test%22)
 [![license: MIT](https://img.shields.io/badge/license-MIT-brightgreen.svg)](./LICENSE)
 
@@ -30,6 +30,8 @@ A [GitHub Action](https://github.com/features/actions) to expose useful environm
 | `CI_BASE_REF`              | Only set for forked repositories / pull request. The branch of the base repository / the base branch name. Copy of `GITHUB_BASE_REF` - for reasons of completeness. | `main`                                |
 | `CI_SHA_SHORT`             | The shortened commit SHA (8 characters) that triggered the workflow.                                                                                           | `ffac537e`                                 |
 | `CI_SHA`                   | The commit SHA that triggered the workflow. Copy of `GITHUB_SHA` - for reasons of completeness.                                                                | `ffac537e6cbbf934b08745a378932722df287a53` |
+| `CI_PR_SHA_SHORT`          | The shortened latest commit SHA in the pull request's base branch. Short version of `CI_PR_SHA`. Only set for pull requests.                                   | `010b249`                                  |
+| `CI_PR_SHA`                | The latest commit SHA in the pull request's base branch. Long version of `CI_PR_SHA_SHORT`. Only set for pull requests.                                        | `010b2491902d50e8623934f5bc43763ff5991642` |
 | `CI_PR_NUMBER`             | The number of the pull request. Only set for pull requests.                                                                                                    | `42`                                       |
 | `CI_PR_ID`                 | Copy of `CI_PR_NUMBER` for completeness.                                                                                                                       | `42`                                       |
 | `CI_PR_TITLE`              | The title of the pull request. Only set for pull requests.                                                                                                     | `Add feature xyz.`                         |

dist/index.js

@@ -192,6 +192,13 @@ try {
   const pullRequest = github.context.payload &&
       github.context.payload.pull_request;
   if (pullRequest) {
+    const prSha = github.event.pull_request.head.sha;
+    core.exportVariable('CI_PR_SHA_SHORT', getShaShort(prSha));
+    core.info(`Set CI_PR_SHA_SHORT=${process.env.CI_PR_SHA_SHORT}`);
+
+    core.exportVariable('CI_PR_SHA', prSha);
+    core.info(`Set CI_PR_SHA=${process.env.CI_PR_SHA}`);
+
     const prNumber = pullRequest.number;
     core.exportVariable('CI_PR_NUMBER', prNumber);
     core.info(`Set CI_PR_NUMBER=${process.env.CI_PR_NUMBER}`);

index.js

@@ -186,6 +186,13 @@ try {
   const pullRequest = github.context.payload &&
       github.context.payload.pull_request;
   if (pullRequest) {
+    const prSha = github.event.pull_request.head.sha;
+    core.exportVariable('CI_PR_SHA_SHORT', getShaShort(prSha));
+    core.info(`Set CI_PR_SHA_SHORT=${process.env.CI_PR_SHA_SHORT}`);
+
+    core.exportVariable('CI_PR_SHA', prSha);
+    core.info(`Set CI_PR_SHA=${process.env.CI_PR_SHA}`);
+
     const prNumber = pullRequest.number;
     core.exportVariable('CI_PR_NUMBER', prNumber);
     core.info(`Set CI_PR_NUMBER=${process.env.CI_PR_NUMBER}`);

package.json

@@ -1,6 +1,6 @@
 {
   "name": "github-env-vars-action",
-  "version": "2.4.0",
+  "version": "2.5.0",
   "description": "A GitHub Action to expose useful environment variables.",
   "main": "index.js",
   "scripts": {