Better diagnostic message from preg_replace on error

phpactor · Apr 22, 2021 · cd3975a · cd3975a
1 parent e265b39
commit cd3975a
Showing 1 changed file with 4 additions and 2 deletions.
diff --git a/lib/Core/Util/OffsetHelper.php b/lib/Core/Util/OffsetHelper.php
@@ -3,6 +3,7 @@
 namespace Phpactor\Completion\Core\Util;
 
 use RuntimeException;
+use function preg_last_error_msg;
 
 class OffsetHelper
 {
@@ -12,8 +13,9 @@ public static function lastNonWhitespaceCharacterOffset(string $input): int
 
         if (null === $source) {
             throw new RuntimeException(sprintf(
-                'preg_replace could not parse string "%s"',
-                $input
+                'preg_replace could not parse string (size %s): %s',
+                strlen($input),
+                preg_last_error_msg()
             ));
         }