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The GitHub linkback feature posts comments on PRs/issues/commits when they are mentioned in Discourse posts. However, it never checked whether the GitHub PR/issue/commit already contained a link back to the same Discourse topic (in its description or existing comments). This led to redundant linkback comments when a PR already referenced the topic. Before posting a linkback comment, we now fetch the PR/issue body and existing comments (or commit comments) from the GitHub API and check whether any of them already contain a URL pointing to the same Discourse topic. URL matching uses Discourse.route_for — the same mechanism used by the oneboxer, search, and TopicLink — to reliably recognize all topic URL formats (/t/slug/id, /t/id, /t/id/post_number, etc.). On any GitHub API error, the check fails open (still posts the linkback) to preserve the pre-existing behavior — and because if the GET fails, the subsequent POST will likely fail too. |
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|---|---|---|
| .. | ||
| commits_populator.rb | ||
| github_badges.rb | ||
| github_badges_repo_setting_validator.rb | ||
| github_linkback.rb | ||
| github_linkback_access_token_setting_validator.rb | ||
| github_permalinks.rb | ||
