# What this PR does
Adds a new `regex_match` filter to Jinja environment.
## Which issue(s) this PR fixes
This should be useful on its own, and also helpful for
https://github.com/grafana/oncall/pull/1555.
## Checklist
- [x] Tests updated
- [x] Documentation added
- [x] `CHANGELOG.md` updated
They will only redirect to oncall docs and not to grafana-cloud docs.
Relative aliases will correctly redirect within the grafana-cloud docs.
Signed-off-by: Jack Baldry <jack.baldry@grafana.com>
