From 2824668c0e477f52b17f4070be72ca5c2d6f16e8 Mon Sep 17 00:00:00 2001
From: Axel Burri <axel@tty0.ch>
Date: Sat, 24 Jul 2021 14:33:32 +0200
Subject: [PATCH] btrbk: fix path sanitizer

Sanitize "/././" -> "/"
---
 btrbk | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/btrbk b/btrbk
index 83b2378..f7fdf55 100755
--- a/btrbk
+++ b/btrbk
@@ -3899,9 +3899,8 @@ sub check_file($$;@)
     return undef;
   }
   if($sanitize) {
-    $file =~ s/\/+/\//g;     # sanitize multiple slash
-    $file =~ s/\/\.\//\//g;  # sanitize "/./" -> "/"
-    $file =~ s/\/\.$/\//;    # sanitize trailing "/." -> "/"
+    $file =~ s/\/(\.?\/)+/\//g;  # sanitize "//", "/./" -> "/"
+    $file =~ s/\/\.$/\//;        # sanitize trailing "/." -> "/"
     $file =~ s/\/$// unless($file eq '/');   # remove trailing slash
   }
   return $file;