From 105745e31289819da9c0181b5cec0cffbedd7d86 Mon Sep 17 00:00:00 2001
From: "kmcclusk%netscape.com" <kmcclusk%netscape.com>
Date: Thu, 20 Aug 1998 20:32:52 +0000
Subject: [PATCH] Added XP_UNIX code to leave the top slash for absolute file
 paths under UNIX. This fixes a problem where all of the slashs get stripped
 off because the URL is asked to parse a previously parsed url string.

---
 network/module/nsURL.cpp | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/network/module/nsURL.cpp b/network/module/nsURL.cpp
index 3a46b9147930..93b99307e8bb 100644
--- a/network/module/nsURL.cpp
+++ b/network/module/nsURL.cpp
@@ -503,6 +503,22 @@ nsresult URLImpl::ParseURL(const nsIURL* aURL, const nsString& aSpec)
       return NS_ERROR_ILLEGAL_VALUE;
     }
 
+
+#ifdef XP_UNIX
+    // Always leave the top level slash for absolute file paths under UNIX.
+    // The code above sometimes results in stripping all of slashes
+    // off. This only happens when a previously stripped url is asked to be
+    // parsed again. Under Win32 this is not a problem since file urls begin
+    // with a drive letter not a slash. This problem show's itself when 
+    // nested documents such as iframes within iframes are parsed.
+
+    if (PL_strcmp(mProtocol, "file") == 0) {
+      if (*cp != '/') {
+       cp--;
+      }
+    }
+#endif
+
     const char* cp0 = cp;
     if ((PL_strcmp(mProtocol, "resource") == 0) ||
         (PL_strcmp(mProtocol, "file") == 0)) {