From fa341347de3885c6769d06621afabf314f9e4c9d Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Thu, 23 Apr 2009 18:43:11 -0700
Subject: [PATCH] Fix #1994 (Save to disk or send to device changes author sort
 order)

---
 src/calibre/ebooks/metadata/mobi.py | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/src/calibre/ebooks/metadata/mobi.py b/src/calibre/ebooks/metadata/mobi.py
index b6ec1fb721..3b65abce5f 100644
--- a/src/calibre/ebooks/metadata/mobi.py
+++ b/src/calibre/ebooks/metadata/mobi.py
@@ -31,7 +31,7 @@ class StreamSlicer(object):
 
     def __len__(self):
         return self._len
-        
+
     def __getitem__(self, key):
         stream = self._stream
         base = self.start
@@ -73,7 +73,7 @@ class StreamSlicer(object):
             return stream.write(value)
         raise TypeError("stream indices must be integers")
 
-    
+
 class MetadataUpdater(object):
     def __init__(self, stream):
         self.stream = stream
@@ -117,7 +117,11 @@ class MetadataUpdater(object):
 
     def update(self, mi):
         recs = []
-        if mi.authors:
+        from calibre.ebooks.mobi.from_any import config
+        if mi.author_sort and config().parse().prefer_author_sort:
+            authors = mi.author_sort
+            recs.append((100, authors.encode(self.codec, 'replace')))
+        elif mi.authors:
             authors = '; '.join(mi.authors)
             recs.append((100, authors.encode(self.codec, 'replace')))
         if mi.publisher: