[meta] fix publishing after first push on new branch

.github/workflows/publish.yml

@@ -19,10 +19,20 @@ jobs:
           distribution: temurin
           java-version: 21
 
+      - name: Determine previous commit
+        id: determine_previous_commit
+        run: |
+          if [ "${{ github.event.before }}" = "0000000000000000000000000000000000000000" ]; then
+            gitPrevHash=$(git rev-parse HEAD~1)
+          else
+            gitPrevHash=${{ github.event.before }}
+          fi
+          echo "GIT_PREVIOUS_COMMIT=$gitPrevHash" >> $GITHUB_ENV
+
       - name: Check commit messages
         id: check_commit_messages
         run: |
-          commits=$(git log ${{ github.event.before }}..${{ github.sha }} --pretty=format:'%s')
+          commits=$(git log $GIT_PREVIOUS_COMMIT..${{ github.sha }} --pretty=format:'%s')
           echo "Commits since last push:"
           echo "$commits"
           if echo "$commits" | grep -qE '^\[meta\]'; then

build.gradle

@@ -226,7 +226,7 @@ static String[] getArray(String deps) {
 }
 
 String changelog(Project project) {
-    String logFmt = '--pretty=tformat:- [%s](' + project.changelog_repository.toString() + ') - *%aN*'
+    String logFmt = '--pretty=tformat:"- [%s](' + project.changelog_repository.toString() + ') - *%aN*"'
     def stdout = new ByteArrayOutputStream()
     def gitHash = System.getenv('GIT_COMMIT')
     def gitPrevHash = System.getenv('GIT_PREVIOUS_COMMIT')
@@ -236,7 +236,7 @@ String changelog(Project project) {
 
     if (gitHash != null && gitPrevHash != null) {
         exec {
-            commandLine 'sh', '-c', "git log ${logFmt} ${gitPrevHash}...${gitHash} | grep -v '^\\[meta\\]'"
+            commandLine 'bash', '-c', "git log ${logFmt} ${gitPrevHash}...${gitHash} | grep -v '^\\[meta\\]'"
             standardOutput = stdout
         }
     } else {