# content-unclosed-fence Detect code fences opened but never closed, hiding the rest of the file from content rules | | | |---|---| | **Severity** | warning (auto) | | **Autofix** | auto | | **Since** | v0.17.0 | | **Category** | [Content Intelligence](content-intelligence.md) | ## Why A code fence that is opened but never closed makes markdown parse everything after it — headings, instructions, whole sections — as code. Agents render the file the same way, so instructions below the fence lose their structure, and every content-quality rule is blinded: prose hidden inside the runaway fence is stripped as code before scanning, so a file full of weak language or placeholders lints clean and can even grade A+. ## Examples **Bad:** ````markdown Deploy with: ```bash make deploy ENV=staging ## Rollback Try to roll back quickly if possible. ```` The `bash` fence never closes, so the entire Rollback section is code — invisible to the agent as instructions and to every content rule. **Good:** ````markdown Deploy with: ```bash make deploy ENV=staging ``` ## Rollback Roll back with `make rollback ENV=staging` within 5 minutes. ```` ## How to fix Add the missing closing fence right after the last intended code line — same character as the opener, in a run at least as long (a three-backtick opener closes with three or more backticks, a four-backtick opener needs four). The autofix appends the matching closer at the end of the file; if the code block was meant to end earlier, move the appended closer up to the right line. Markdown bodies embedded inside a YAML host document (`.coderabbit.yaml` `path_instructions`, promptfoo prompts) are still checked, but reported as **not auto-fixable**: appending a closer at the end of the host file would corrupt the YAML, so close the fence by hand inside the embedded block. ## Configuration ```yaml rules: content-unclosed-fence: enabled: auto # true | false | auto severity: warning ``` *Run `skillsaw explain content-unclosed-fence` to see this documentation and the rule's effective configuration in your terminal.*