From 819b3126d31f93ad0d8f14a195dfe620a5ef2d32 Mon Sep 17 00:00:00 2001
From: orklah <ronan_morin@hotmail.com>
Date: Sat, 22 May 2021 16:36:12 +0200
Subject: [PATCH] Allow empty-string in first position of an type

---
 src/Psalm/Internal/Analyzer/CommentAnalyzer.php | 2 +-
 tests/AnnotationTest.php                        | 9 +++++++++
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/src/Psalm/Internal/Analyzer/CommentAnalyzer.php b/src/Psalm/Internal/Analyzer/CommentAnalyzer.php
index 34898c6a044..db29cfd6ea4 100644
--- a/src/Psalm/Internal/Analyzer/CommentAnalyzer.php
+++ b/src/Psalm/Internal/Analyzer/CommentAnalyzer.php
@@ -280,7 +280,7 @@ public static function splitDocLine(string $return_block): array
             $last_char = $i > 0 ? $return_block[$i - 1] : null;
 
             if ($quote_char) {
-                if ($char === $quote_char && $i > 1 && !$escaped) {
+                if ($char === $quote_char && !$escaped) {
                     $quote_char = null;
 
                     $type .= $char;
diff --git a/tests/AnnotationTest.php b/tests/AnnotationTest.php
index c4a3c43222e..5835fb94041 100644
--- a/tests/AnnotationTest.php
+++ b/tests/AnnotationTest.php
@@ -1201,6 +1201,15 @@ function takesFlags(int $flags) : void {
 
                     takesFlags(FileFlag::MODIFIED | FileFlag::NEW);'
             ],
+            'emptyStringFirst' => [
+                '<?php
+                    /**
+                     * @param \'\'|\'a\'|\'b\' $v
+                     */
+                    function testBad(string $v): void {
+                        echo $v;
+                    }'
+            ],
         ];
     }