From 5003431903c9e873ad61c80ceb60a504b8be8887 Mon Sep 17 00:00:00 2001
From: Enrico Forestieri <forenr@lyx.org>
Date: Sat, 24 Dec 2011 11:54:30 +0000
Subject: [PATCH] Fix bug #7933 (lyx2lyx error while running lyxpak.py)

git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@40544 a592a061-630c-0410-9148-cb99ea01b6c8
---
 lib/scripts/lyxpak.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lib/scripts/lyxpak.py b/lib/scripts/lyxpak.py
index 696acef81d..37829e09c2 100755
--- a/lib/scripts/lyxpak.py
+++ b/lib/scripts/lyxpak.py
@@ -285,6 +285,10 @@ def main(args):
     # Find the topmost dir common to all files
     if len(incfiles) > 1:
         topdir = os.path.commonprefix(incfiles)
+        # Check whether topdir is valid, as os.path.commonprefix() works on
+        # a character by character basis, rather than on path elements.
+        if not os.path.exists(topdir):
+            topdir = os.path.dirname(topdir) + os.path.sep
     else:
         topdir = os.path.dirname(incfiles[0]) + os.path.sep
 
-- 
2.39.2