Why Not gh pr review

gh pr review doesn't support inline comments on specific lines. Use gh api instead.

Posting Inline Comments

Use --input - with heredoc JSON (not -f 'comments=[...]' which gets stringified):

gh api repos/{owner}/{repo}/pulls/{pr_number}/reviews \
  --method POST \
  --input - << 'EOF'
{
  "event": "REQUEST_CHANGES",
  "comments": [
    {"path":"file.rb","line":10,"body":"Comment text"},
    {"path":"other.rb","line":25,"body":"Another comment"}
  ]
}
EOF

Event Types

• COMMENT - Neutral feedback
• APPROVE - Approve the PR
• REQUEST_CHANGES - Block merge until addressed

Multi-line Comments

For comments spanning lines, add start_line:

{"path":"file.rb","start_line":5,"line":10,"body":"This block..."}

Line Number Gotchas

• Line numbers are file lines in HEAD commit (new file version)
• GitHub's diff display can be off-by-one from what you expect
• Always verify comments landed on the right line after posting
• To delete a misplaced comment: gh api repos/{owner}/{repo}/pulls/comments/{id} --method DELETE

Important Notes

• Omit top-level body field to skip summary comment
• Each comment needs: path, line, body
• Safety: Always show proposed comments and wait for approval before posting