docs(grep): contains tags (#31042)

docs/src/test-api/class-testconfig.md

@@ -164,7 +164,7 @@ export default defineConfig({
 * since: v1.10
 - type: ?<[RegExp]|[Array]<[RegExp]>>
 
-Filter to only run tests with a title matching one of the patterns. For example, passing `grep: /cart/` should only run tests with "cart" in the title. Also available in the [command line](../test-cli.md) with the `-g` option. The regular expression will be tested against the string that consists of the test file name, `test.describe` name (if any) and the test name divided by spaces, e.g. `my-test.spec.ts my-suite my-test`.
+Filter to only run tests with a title matching one of the patterns. For example, passing `grep: /cart/` should only run tests with "cart" in the title. Also available in the [command line](../test-cli.md) with the `-g` option. The regular expression will be tested against the string that consists of the project name, the test file name, the `test.describe` name (if any), the test name and the test tags divided by spaces, e.g. `chromium my-test.spec.ts my-suite my-test`.
 
 `grep` option is also useful for [tagging tests](../test-annotations.md#tag-tests).
 

docs/src/test-api/class-testproject.md

@@ -123,7 +123,7 @@ You can configure entire test project to concurrently run all tests in all files
 * since: v1.10
 - type: ?<[RegExp]|[Array]<[RegExp]>>
 
-Filter to only run tests with a title matching one of the patterns. For example, passing `grep: /cart/` should only run tests with "cart" in the title. Also available globally and in the [command line](../test-cli.md) with the `-g` option. The regular expression will be tested against the string that consists of the test file name, `test.describe` name (if any) and the test name divided by spaces, e.g. `my-test.spec.ts my-suite my-test`.
+Filter to only run tests with a title matching one of the patterns. For example, passing `grep: /cart/` should only run tests with "cart" in the title. Also available globally and in the [command line](../test-cli.md) with the `-g` option. The regular expression will be tested against the string that consists of the project name, the test file name, the `test.describe` name (if any), the test name and the test tags divided by spaces, e.g. `chromium my-test.spec.ts my-suite my-test`.
 
 `grep` option is also useful for [tagging tests](../test-annotations.md#tag-tests).
 

packages/playwright/types/test.d.ts

@@ -266,8 +266,9 @@ interface TestProject<TestArgs = {}, WorkerArgs = {}> {
   /**
    * Filter to only run tests with a title matching one of the patterns. For example, passing `grep: /cart/` should only
    * run tests with "cart" in the title. Also available globally and in the [command line](https://playwright.dev/docs/test-cli) with the `-g`
-   * option. The regular expression will be tested against the string that consists of the test file name,
+   * option. The regular expression will be tested against the string that consists of the project name, the test file
-   * `test.describe` name (if any) and the test name divided by spaces, e.g. `my-test.spec.ts my-suite my-test`.
+   * name, the `test.describe` name (if any), the test name and the test tags divided by spaces, e.g. `chromium
+   * my-test.spec.ts my-suite my-test`.
    *
    * `grep` option is also useful for [tagging tests](https://playwright.dev/docs/test-annotations#tag-tests).
    */
@@ -1130,8 +1131,9 @@ interface TestConfig<TestArgs = {}, WorkerArgs = {}> {
   /**
    * Filter to only run tests with a title matching one of the patterns. For example, passing `grep: /cart/` should only
    * run tests with "cart" in the title. Also available in the [command line](https://playwright.dev/docs/test-cli) with the `-g` option. The
-   * regular expression will be tested against the string that consists of the test file name, `test.describe` name (if
+   * regular expression will be tested against the string that consists of the project name, the test file name, the
-   * any) and the test name divided by spaces, e.g. `my-test.spec.ts my-suite my-test`.
+   * `test.describe` name (if any), the test name and the test tags divided by spaces, e.g. `chromium my-test.spec.ts
+   * my-suite my-test`.
    *
    * `grep` option is also useful for [tagging tests](https://playwright.dev/docs/test-annotations#tag-tests).
    *