Don't consume all of line when parsing tags

src/Behat/Gherkin/Lexer.php

@@ -179,6 +179,15 @@ protected function consumeLine()
         $this->trimmedLine = null;
     }
 
+    /**
+     * Consumes first part of line from input without incrementing the line number
+     */
+    protected function consumeLineUntil(int $trimmedOffset)
+    {
+        $this->line = mb_substr(ltrim($this->line), $trimmedOffset, null, 'utf-8');
+        $this->trimmedLine = null;
+    }
+
     /**
      * Returns trimmed version of line.
      *
@@ -502,17 +511,24 @@ protected function scanTableRow()
     protected function scanTags()
     {
         $line = $this->getTrimmedLine();
-        $line = preg_replace('/\s+#.*$/', '', $line);
+
         if (!isset($line[0]) || '@' !== $line[0]) {
             return null;
         }
 
+        if(preg_match('/^(?<line>.*)\s+#.*$/', $line, $matches)) {
+            ['line' => $line] = $matches;
+            $this->consumeLineUntil(mb_strlen($line, 'utf-8'));
+        }
+        else {
+            $this->consumeLine();
+        }
+
         $token = $this->takeToken('Tag');
         $tags = explode('@', mb_substr($line, 1, mb_strlen($line, 'utf8') - 1, 'utf8'));
         $tags = array_map('trim', $tags);
         $token['tags'] = $tags;
 
-        $this->consumeLine();
 
         return $token;
     }