From 51b1d12e571d958cd4e9b59713f7ec72c1d2b105 Mon Sep 17 00:00:00 2001
From: "Richard M. Stallman" <rms@gnu.org>
Date: Thu, 13 Jun 1996 19:09:32 +0000
Subject: [PATCH] (Fexpand_file_name): When simplifying /foo/.., keep the
 initial slash.

---
 src/fileio.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/fileio.c b/src/fileio.c
index a05a72e97bd..f5a800f6c16 100644
--- a/src/fileio.c
+++ b/src/fileio.c
@@ -1386,6 +1386,8 @@ See also the function `substitute-in-file-name'.")
 	{
 	  while (o != target && (--o) && !IS_DIRECTORY_SEP (*o))
 	    ;
+	  if (o == target && IS_ANY_SEP (*o))
+	    ++o;
 	  p += 3;
 	}
       else
-- 
2.39.5