From a3df424857ace2c224801829b1c9d7ceac6ee8c3 Mon Sep 17 00:00:00 2001
From: David Dworken <dworken@anthropic.com>
Date: Wed, 7 Jan 2026 07:57:56 -0800
Subject: [PATCH] fix: validate that issues exist before commenting on
 duplicates
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Add validation to comment-on-duplicates.sh that verifies the base issue
and all potential duplicate issues actually exist in the repo before
posting a comment.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>
---
 scripts/comment-on-duplicates.sh | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/scripts/comment-on-duplicates.sh b/scripts/comment-on-duplicates.sh
index 3a057203..59577af3 100755
--- a/scripts/comment-on-duplicates.sh
+++ b/scripts/comment-on-duplicates.sh
@@ -60,6 +60,20 @@ for dup in "${DUPLICATES[@]}"; do
   fi
 done
 
+# Validate that base issue exists
+if ! gh issue view "$BASE_ISSUE" --repo "$REPO" &>/dev/null; then
+  echo "Error: issue #$BASE_ISSUE does not exist in $REPO" >&2
+  exit 1
+fi
+
+# Validate that all duplicate issues exist
+for dup in "${DUPLICATES[@]}"; do
+  if ! gh issue view "$dup" --repo "$REPO" &>/dev/null; then
+    echo "Error: issue #$dup does not exist in $REPO" >&2
+    exit 1
+  fi
+done
+
 # Build comment body
 COUNT=${#DUPLICATES[@]}
 if [[ $COUNT -eq 1 ]]; then