gh --version
gh auth status

gh repo view --json viewerPermission --jq '.viewerPermission'
# Need write/triage access

gh issue view 123 --json \
  number,title,body,labels,assignees,milestone,state

gh issue edit 123 --title "Fix: Login button not responding on Safari"

gh issue edit 123 --body "$(cat <<'EOF'
## Updated Description

Users cannot log in when using Safari browser on iOS 17.

## Updated Requirements
- Must work on Safari 16+
- Should show error message if browser unsupported
- Need fallback for older iOS versions

## Additional Context
This is now blocking the v2.1 release.
EOF
)"

gh issue edit 123 --body-file updated-description.md

gh issue edit 123 --add-label "priority-high,security"

gh issue edit 123 --remove-label "needs-triage"

gh issue edit 123 --label "bug,priority-critical,security"

gh issue edit 123 --add-assignee alice,bob

gh issue edit 123 --remove-assignee charlie

gh issue edit 123 --milestone "v2.1"

gh issue edit 123 --milestone ""

gh issue edit 123 --add-project "Q1 Roadmap"

gh issue edit 123 --remove-project "Backlog"

gh issue view 123 --json title,labels,assignees,milestone \
  | jq '.'

gh issue comment 123 --body "$(cat <<'EOF'
Updated issue metadata:
- Changed priority to critical
- Added security label
- Assigned to @alice for immediate attention
- Moved to v2.1 milestone

Reason: This is blocking production deployment.
EOF
)"

✓ Issue #123 updated successfully

Changes:

- Title: "Login bug" → "Fix: Login button not responding on Safari"
- Labels: +priority-high, +security, -needs-triage
- Assignees: +alice, +bob
- Milestone: → v2.1

🔗 [View Issue](https://github.com/owner/repo/issues/123)

# Increase priority
gh issue edit 123 \
  --remove-label "priority-low" \
  --add-label "priority-critical" \
  --add-assignee "team-lead"

gh issue comment 123 \
  --body "Escalating to critical - impacting production users."

# Reassign from alice to bob
gh issue edit 123 \
  --remove-assignee alice \
  --add-assignee bob

gh issue comment 123 \
  --body "@bob Taking over from @alice. Context: [brief summary]"

# Move from v2.0 to v2.1
gh issue edit 123 --milestone "v2.1"

gh issue comment 123 \
  --body "Moving to v2.1 - won't make it into v2.0 release."

# Update description with clearer requirements
gh issue edit 123 --body "$(cat <<'EOF'
## Problem
Users cannot export data when dataset >10,000 rows.

## Requirements
- Support exports up to 100,000 rows
- Show progress indicator for large exports
- Implement pagination for datasets >100k
- Add export format options (CSV, JSON, Excel)

## Acceptance Criteria
- [ ] Exports complete successfully for 100k rows
- [ ] Progress bar shows during export
- [ ] User can select export format
- [ ] Error message shown for datasets >100k

## Technical Notes
Consider streaming export to avoid memory issues.
EOF
)"

gh issue comment 123 \
  --body "Updated requirements based on product team feedback."

# Fix incorrect labels
gh issue edit 123 \
  --remove-label "enhancement" \
  --add-label "bug,regression"

gh issue comment 123 \
  --body "Correcting labels - this is a regression, not an enhancement."

# Add label to all issues in milestone
gh issue list --milestone "v2.0" --json number \
  | jq -r '.[].number' \
  | while read issue; do
    gh issue edit $issue --add-label "release-v2.0"
    echo "Added label to issue #$issue"
    sleep 1
  done

# Reopen issue that was closed prematurely
gh issue reopen 123

gh issue edit 123 --add-label "reopened"

gh issue comment 123 --body "$(cat <<'EOF'
Reopening - issue is still occurring in production.

New occurrences:
- Production server A: 10 errors in last hour
- Production server B: 5 errors in last hour

Original fix in PR #234 didn't address all cases.
EOF
)"

# Update all bugs without assignee
gh issue list --label "bug" --search "no:assignee" --json number \
  | jq -r '.[].number' \
  | while read issue; do
    gh issue edit $issue --add-assignee "triage-team"
    echo "Assigned triage-team to issue #$issue"
    sleep 1
  done

# When PR is merged, update related issue
PR_NUM=234
ISSUE_NUM=$(gh pr view $PR_NUM --json body | jq -r '.body' | grep -oE "#[0-9]+" | head -1 | tr -d '#')

if [ -n "$ISSUE_NUM" ]; then
  gh issue edit $ISSUE_NUM \
    --add-label "fixed-pending-deployment" \
    --remove-label "in-progress"

  gh issue comment $ISSUE_NUM \
    --body "Fix merged in PR #$PR_NUM. Pending deployment to production."
fi

# Apply same labels to related issues
LABELS=$(gh issue view 123 --json labels --jq '.labels[].name' | paste -sd,)

for issue in 124 125 126; do
  gh issue edit $issue --label "$LABELS"
  echo "Synced labels to issue #$issue"
done

# Use template for consistent updates
cat > issue-template.md <<'EOF'
## Problem Statement
{problem}

## Acceptance Criteria
{criteria}

## Technical Notes
{notes}
EOF

# Fill and apply
sed -e "s/{problem}/Clear problem description/" \
    -e "s/{criteria}/Detailed criteria/" \
    -e "s/{notes}/Implementation notes/" \
    issue-template.md > filled-issue.md

gh issue edit 123 --body-file filled-issue.md

# Incrementally add details as you learn more
gh issue edit 123 --body "$(cat <<EOF
$(gh issue view 123 --json body --jq '.body')

## Additional Findings
- Also affects Firefox
- Workaround: clear cookies
- Root cause: session storage issue
EOF
)"

# Just fix typo in title
gh issue edit 123 --title "Fix login button (not 'button login')"

# Complete rewrite after investigation
gh issue edit 123 --body-file comprehensive-update.md
gh issue comment 123 --body "Updated issue with full investigation findings."

# Append new information
CURRENT_BODY=$(gh issue view 123 --json body --jq '.body')
gh issue edit 123 --body "$(cat <<EOF
$CURRENT_BODY

## Update $(date +%Y-%m-%d)
New information discovered during testing...
EOF
)"