Don't process a stale issue in the same run it's marked stale (#696)

src/classes/issue.ts

@@ -20,6 +20,7 @@ export class Issue implements IIssue {
   readonly milestone?: IMilestone | null;
   readonly assignees: Assignee[];
   isStale: boolean;
+  markedStaleThisRun: boolean;
   operations = new Operations();
   private readonly _options: IIssuesProcessorOptions;
 
@@ -39,6 +40,7 @@ export class Issue implements IIssue {
     this.milestone = issue.milestone;
     this.assignees = issue.assignees || [];
     this.isStale = isLabeled(this, this.staleLabel);
+    this.markedStaleThisRun = false;
   }
 
   get isPullRequest(): boolean {

src/classes/issues-processor.ts

@@ -465,6 +465,7 @@ export class IssuesProcessor {
           );
           await this._markStale(issue, staleMessage, staleLabel, skipMessage);
           issue.isStale = true; // This issue is now considered stale
+          issue.markedStaleThisRun = true;
           issueLogger.info(`This $$type is now stale`);
         } else {
           issueLogger.info(
@@ -666,8 +667,16 @@ export class IssuesProcessor {
       );
     }
 
+    if (issue.markedStaleThisRun) {
+      issueLogger.info(`marked stale this run, so don't check for updates`);
+    }
+
     // Should we un-stale this issue?
-    if (shouldRemoveStaleWhenUpdated && issueHasComments) {
+    if (
+      shouldRemoveStaleWhenUpdated &&
+      issueHasComments &&
+      !issue.markedStaleThisRun
+    ) {
       issueLogger.info(
         `Remove the stale label since the $$type has a comment and the workflow should remove the stale label when updated`
       );