From 138c7b801ef97a2110e11a509d1cb39cf5fefd25 Mon Sep 17 00:00:00 2001
From: Bruce Weirdan <weirdan@gmail.com>
Date: Thu, 1 Feb 2024 01:41:24 +0100
Subject: [PATCH] Fix baseline loading for path specified on the command line

Fixes vimeo/psalm#10624
---
 src/Psalm/Internal/Cli/Psalm.php | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/Psalm/Internal/Cli/Psalm.php b/src/Psalm/Internal/Cli/Psalm.php
index dda0e27530b..c354cf21a58 100644
--- a/src/Psalm/Internal/Cli/Psalm.php
+++ b/src/Psalm/Internal/Cli/Psalm.php
@@ -1067,7 +1067,8 @@ private static function initBaseline(
         if ($paths_to_check !== null) {
             $filtered_issue_baseline = [];
             foreach ($paths_to_check as $path_to_check) {
-                $path_to_check = substr($path_to_check, strlen($config->base_dir));
+                // +1 to remove the initial slash from $path_to_check
+                $path_to_check = substr($path_to_check, strlen($config->base_dir) + 1);
                 if (isset($issue_baseline[$path_to_check])) {
                     $filtered_issue_baseline[$path_to_check] = $issue_baseline[$path_to_check];
                 }