Files
claude-code/scripts/comment-on-duplicates.sh
David Dworken a3df424857 fix: validate that issues exist before commenting on duplicates
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>
2026-01-07 07:57:56 -08:00

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#!/usr/bin/env bash
#
# Comments on a GitHub issue with a list of potential duplicates.
# Usage: ./comment-on-duplicates.sh --base-issue 123 --potential-duplicates 456 789 101
#
set -euo pipefail
REPO="anthropics/claude-code"
BASE_ISSUE=""
DUPLICATES=()
# Parse arguments
while [[ $# -gt 0 ]]; do
case $1 in
--base-issue)
BASE_ISSUE="$2"
shift 2
;;
--potential-duplicates)
shift
while [[ $# -gt 0 && ! "$1" =~ ^-- ]]; do
DUPLICATES+=("$1")
shift
done
;;
*)
echo "Unknown option: $1" >&2
exit 1
;;
esac
done
# Validate base issue
if [[ -z "$BASE_ISSUE" ]]; then
echo "Error: --base-issue is required" >&2
exit 1
fi
if ! [[ "$BASE_ISSUE" =~ ^[0-9]+$ ]]; then
echo "Error: --base-issue must be a number, got: $BASE_ISSUE" >&2
exit 1
fi
# Validate duplicates
if [[ ${#DUPLICATES[@]} -eq 0 ]]; then
echo "Error: --potential-duplicates requires at least one issue number" >&2
exit 1
fi
if [[ ${#DUPLICATES[@]} -gt 3 ]]; then
echo "Error: --potential-duplicates accepts at most 3 issues" >&2
exit 1
fi
for dup in "${DUPLICATES[@]}"; do
if ! [[ "$dup" =~ ^[0-9]+$ ]]; then
echo "Error: duplicate issue must be a number, got: $dup" >&2
exit 1
fi
done
# Validate that base issue exists
if ! gh issue view "$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
HEADER="Found 1 possible duplicate issue:"
else
HEADER="Found $COUNT possible duplicate issues:"
fi
BODY="$HEADER"$'\n\n'
INDEX=1
for dup in "${DUPLICATES[@]}"; do
BODY+="$INDEX. https://github.com/$REPO/issues/$dup"$'\n'
((INDEX++))
done
BODY+=$'\n'"This issue will be automatically closed as a duplicate in 3 days."$'\n\n'
BODY+="- If your issue is a duplicate, please close it and 👍 the existing issue instead"$'\n'
BODY+="- To prevent auto-closure, add a comment or 👎 this comment"$'\n\n'
BODY+="🤖 Generated with [Claude Code](https://claude.ai/code)"
# Post the comment
gh issue comment "$BASE_ISSUE" --repo "$REPO" --body "$BODY"
echo "Posted duplicate comment on issue #$BASE_ISSUE"