Backport not escaping SafeString; it's a bug.
Backport not escaping SafeString; it's a bug.

mozilla/nunjucks,internalfx/nunjucks,kevinschaul/nunjucks,oddbird/nunjucks,devoidfury/nunjucks,oddbird/nunjucks,kevinschaul/nunjucks,internalfx/nunjucks,kevinschaul/nunjucks,kevinschaul/nunjucks,internalfx/nunjucks,mozilla/nunjucks,devoidfury/nunjucks,oddbird/nunjucks,devoidfury/nunjucks,mozilla/nunjucks,internalfx/nunjucks,oddbird/nunjucks