Try: add gravatar to quick edit author selector

src/wp-admin/css/forms.css

@@ -327,6 +327,12 @@ input[type="radio"].disabled:checked:before {
 	background-size: 16px 16px;
 	cursor: pointer;
 	vertical-align: middle;
+	appearance: base-select;
+
+}
+
+select::picker( .wp-core-ui ) {
+	appearance: base-select;
 }
 
 .wp-core-ui select:hover {
@@ -411,10 +417,52 @@ input[type="radio"].disabled:checked:before {
 	margin-top: 0;
 }
 
-.wp-core-ui select[multiple] {
-	height: auto;
-	padding-right: 8px;
-	background: #fff;
+select,
+::picker(select) {
+  appearance: base-select;
+  font-family: system-ui;
+}
+
+/* hide checkmark */
+option::checkmark,
+select.authors::picker-icon {
+  display: none;
+}
+
+::picker(select) {
+  max-height: 60dvh;
+  padding: 0;
+}
+
+select:has(:popover-open) {
+  border-radius: 0;
+}
+
+option,
+selectedcontent {
+	display: grid;
+	grid-template-columns: 1.5rem 1fr;
+	gap: 1rem;
+	font-size: 1rem;
+	/*  remove these two lines when patch is in   */
+	align-items: center;
+	padding: .4rem;
+
+	& img,
+	& figure {
+		width: 100%;
+	}
+}
+
+
+[hidden] {
+  display: none;
+}
+
+
+
+body {
+  margin: 2rem 4rem;
 }
 
 .submit {

src/wp-admin/includes/class-wp-posts-list-table.php

@@ -1735,6 +1735,7 @@ public function inline_edit() {
 								'multi'                   => 1,
 								'echo'                    => 0,
 								'show'                    => 'display_name_with_login',
+								'show_gravatar'           => true,
 							);
 
 							if ( $bulk ) {

src/wp-includes/user.php

@@ -1604,6 +1604,7 @@ function setup_userdata( $for_user_id = 0 ) {
  * @since 4.7.0 Added the 'role', 'role__in', and 'role__not_in' parameters.
  * @since 5.9.0 Added the 'capability', 'capability__in', and 'capability__not_in' parameters.
  *              Deprecated the 'who' parameter.
+ * @since 6.8.0 Add the 'show_gravatar' parameter.
  *
  * @param array|string $args {
  *     Optional. Array or string of arguments to generate a drop-down of users.
@@ -1665,6 +1666,7 @@ function setup_userdata( $for_user_id = 0 ) {
  *                                                    of these capabilities will not be included in results.
  *                                                    Does NOT work for capabilities not in the database or filtered
  *                                                    via {@see 'map_meta_cap'}. Default empty array.
+ *     @type string           $show_gravatar          Whether to include the user's Gravatar. Accepts 'true' or 'false'. Default false.
  * }
  * @return string HTML dropdown list of users.
  */
@@ -1694,6 +1696,7 @@ function wp_dropdown_users( $args = '' ) {
 		'capability'              => '',
 		'capability__in'          => array(),
 		'capability__not_in'      => array(),
+		'show_gravatar'           => false,
 	);
 
 	$defaults['selected'] = is_author() ? get_query_var( 'author' ) : 0;
@@ -1715,6 +1718,7 @@ function wp_dropdown_users( $args = '' ) {
 			'capability',
 			'capability__in',
 			'capability__not_in',
+			'show_gravatar',
 		)
 	);
 
@@ -1794,7 +1798,19 @@ function wp_dropdown_users( $args = '' ) {
 			}
 
 			$_selected = selected( $user->ID, $parsed_args['selected'], false );
-			$output   .= "\t<option value='$user->ID'$_selected>" . esc_html( $display ) . "</option>\n";
+
+			// Add the gravatar image if enabled.
+			$gravatar = '';
+			if ( $parsed_args['show_gravatar'] ) {
+				$gravatar = get_avatar( $user->ID, 24 ) . ' ';
+			}
+			$output .= sprintf(
+				"\t<option value='%s'%s>%s%s</option>\n",
+				$user->ID,
+				$_selected,
+				$gravatar,
+				esc_html( $display )
+			);
 		}
 
 		$output .= '</select>';

tests/phpunit/tests/user/wpDropdownUsers.php

@@ -201,4 +201,29 @@
 		$this->assertStringNotContainsString( $u1->user_login, $found );
 		$this->assertStringContainsString( $u2->user_login, $found );
 	}
+
+	/**
+	 * Show display name with gravatar image.
+	 */
+	public function test_user_dropdown_with_gravatar() {
+		$u1 = self::factory()->user->create(array(
+			'user_login'   => 'foo',
+			'display_name' => 'Foo Person',
+		) );
+
+		// Add some gravatars.
+		update_user_meta( $u1, 'wp_user_avatar', 'https://example.com/avatar1.jpg' );
+
+		$dropdown = wp_dropdown_users(
+			array(
+				'echo'          => false,
+				'show_gravatar' => 'true',
+			)
+		);
+
+		$gravatar = get_avatar( $u1, 24 );
+		$expected = "<option value='$u1'>$gravatar Foo Person</option>";
+
+		$this->assertStringContainsString( $expected, $dropdown );
+	}
 }