Add action output for using the error message

README.md

@@ -182,3 +182,63 @@ as both runs will use separate caches, but providing the shared key will lead to
   with:
     prefix-key: v1
 ```
+
+## Using the error message as output
+
+In case the semver check fails, this action will populate the `error_message` output.
+
+[An output can be used in other steps](https://docs.github.com/en/actions/using-jobs/defining-outputs-for-jobs), for example to comment the error message onto the pull request.
+
+```yml
+name: "Check PR"
+
+on:
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  check-semver:
+    name: Check semver
+    runs-on: ubuntu-latest
+    outputs:
+      error_message: ${{ steps.check_semver.outputs.error_message }}
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Run cargo-semver-checks
+        id: check_semver
+        uses: obi1kenobi/cargo-semver-checks-action@v2
+
+  comment-on-pr:
+    name: Comment on pull request
+    runs-on: ubuntu-latest
+    needs: check-semver
+    if: always()
+    permissions:
+      pull-requests: write
+    steps:
+      - name: Comment
+        if: ${{ needs.check-semver.outputs.error_message != null }}
+        uses: marocchino/sticky-pull-request-comment@v2
+        with:
+          header: pr-semver-check-error
+          message: |
+            Thank you for opening this pull request!
+
+            Reviewer note: [cargo-semver-checks](https://github.com/obi1kenobi/cargo-semver-checks) reported the current version number is not SemVer-compatible with the changes made since the last release.
+
+            Details:
+
+            ```
+            ${{ needs.check-semver.outputs.error_message }}
+            ```
+
+      - name: Delete comment
+        if: ${{ needs.check-semver.outputs.error_message == null }}
+        uses: marocchino/sticky-pull-request-comment@v2
+        with:
+          header: pr-semver-check-error
+          delete: true
+```

dist/licenses.txt

@@ -745,6 +745,19 @@ The above copyright notice and this permission notice shall be included in all c
 
 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
+ansi-regex
+MIT
+MIT License
+
+Copyright (c) Sindre Sorhus <sindresorhus@gmail.com> (https://sindresorhus.com)
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+
 asynckit
 MIT
 The MIT License (MIT)
@@ -1515,6 +1528,19 @@ ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
 IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 
 
+strip-ansi
+MIT
+MIT License
+
+Copyright (c) Sindre Sorhus <sindresorhus@gmail.com> (https://sindresorhus.com)
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+
 supports-color
 MIT
 MIT License