fix: pass pull request header and footer options to merge plugin

src/manifest.ts

@@ -33,7 +33,7 @@ import {
 } from './factory';
 import {Release} from './release';
 import {Strategy} from './strategy';
-import {Merge} from './plugins/merge';
+import {MergeOptions, Merge} from './plugins/merge';
 import {ReleasePleaseManifest} from './updaters/release-please-manifest';
 import {
   DuplicateReleaseError,
@@ -749,10 +749,33 @@ export class Manifest {
     // Combine pull requests into 1 unless configured for separate
     // pull requests
     if (!this.separatePullRequests) {
+      const mergeOptions: MergeOptions = {
+        pullRequestTitlePattern: this.groupPullRequestTitlePattern,
+      };
+      // Find the first repositoryConfig item that has a set value
+      // for the options that can be passed to the merge plugin
+      for (const path in this.repositoryConfig) {
+        const config = this.repositoryConfig[path];
+        if (
+          'pullRequestHeader' in config &&
+          !('pullRequestHeader' in mergeOptions)
+        ) {
+          mergeOptions.pullRequestHeader = config.pullRequestHeader;
+        }
+        if (
+          'pullRequestFooter' in config &&
+          !('pullRequestFooter' in mergeOptions)
+        ) {
+          mergeOptions.pullRequestFooter = config.pullRequestFooter;
+        }
+      }
       this.plugins.push(
-        new Merge(this.github, this.targetBranch, this.repositoryConfig, {
-          pullRequestTitlePattern: this.groupPullRequestTitlePattern,
-        })
+        new Merge(
+          this.github,
+          this.targetBranch,
+          this.repositoryConfig,
+          mergeOptions
+        )
       );
     }
 

src/plugins/merge.ts

@@ -26,7 +26,7 @@ import {Update} from '../update';
 import {mergeUpdates} from '../updaters/composite';
 import {GitHub} from '../github';
 
-interface MergeOptions {
+export interface MergeOptions {
   pullRequestTitlePattern?: string;
   pullRequestHeader?: string;
   pullRequestFooter?: string;