fix(utils.php) handling of prompt default answers

changelog.md

@@ -8,6 +8,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Changed
 
 - Update the WordPress version used in the stack to `5.5`.
+- Fix handling of default answers in prompts.
 
 ## [0.5.2] - 2020-08-10
 ### Changed

src/utils.php

@@ -497,6 +497,9 @@ function ask( $question, $default = null ) {
 		$prompt .= " ({$default})";
 	}
 
+	// Add an empty space after the prompt to separate visual confusion.
+	$prompt .= ' ';
+
 	$is_boolean = false;
 	if ( is_bool( $default ) || preg_match( '/(^yes|no)$/i', $default ) ) {
 		// It's a yes or no question, cast to boolean at the end.
@@ -511,6 +514,13 @@ function ask( $question, $default = null ) {
 		$value = readline();
 	}
 
+	/*
+	 * If the answer is an empty line, then the user just pressed Enter: use the default value.
+	 */
+	if ( $default !== '' ) {
+		$value = '' === trim( $value ) ? $default : $value;
+	}
+
 	if ( $is_boolean ) {
 		return preg_match( '/^y/i', $value );
 	}