wip.

tests/lib/linter.js

@@ -1560,6 +1560,20 @@ describe("Linter", () => {
             messages = linter.verify(codeB, config, filename, false);
             assert.equal(messages.length, 1);
         });
+
+        // https://github.com/eslint/eslint/issues/9366
+        it("rules should handle regex option correctly", () => {
+            const config = {};
+            const code = [
+                // "\\\\W" equals to "\\W" in source code.
+                "/* eslint id-match: [2, \"^(([^$\\\\W]|\\\\$[a-f\\\\d]{2})+|[$_]\\\\w*|[^\\\\W\\\\d]\\\\w*|[A-Z]([A-Z_]*[A-Z])?)$\", {properties: true}] */",
+                "var is$2dvoid = 0;"
+            ].join("\n");
+
+            let messages = linter.verify(code, config, filename, false);
+
+            assert.equal(messages.length, 0);
+        });
     });
 
     describe("when evaluating code with invalid comments to enable rules", () => {