From: Paul Eggert <eggert@cs.ucla.edu>
Date: Tue, 7 Apr 2026 18:11:21 +0000 (-0700)
Subject: --one-top-level now keeps "../" and ".../"
X-Git-Url: http://git.ipfire.org/gitweb/?a=commitdiff_plain;h=90dec1cc53b8297fafc710e5cc57c8ba8a1fb9bb;p=thirdparty%2Ftar.git

--one-top-level now keeps "../" and ".../"

* src/list.c (enforce_one_top_level): Do not strip prefixes like
"../" (which should not be allowed unless -P) and ".../" (which
are ordinary file names).  The "../" not being allowed should be
addressed in a different way.
---

diff --git a/src/list.c b/src/list.c
index 8e9caf5c..14050cfb 100644
--- a/src/list.c
+++ b/src/list.c
@@ -120,8 +120,16 @@ enforce_one_top_level (char **pfile_name)
   char *file_name = *pfile_name;
   char *p;
 
-  for (p = file_name; *p && (ISSLASH (*p) || *p == '.'); p++)
-    ;
+  for (p = file_name; ; p++)
+    {
+      bool dot = p[0] == '.';
+      if (!ISSLASH (p[dot]))
+	{
+	  p += dot & !p[dot];
+	  break;
+	}
+      p += dot;
+    }
 
   if (*p)
     {