[LyX/master] lyx2lyx/lyx_2_2.py: fix for a lyx2lyx issue

[Uwe Stöhr]

commit 8ede3618f0e0a3bb20e9a6dcc07b6c0704c402b3
Author: Uwe Stöhr <uwesto...@lyx.org>
Date:   Sun May 17 02:48:22 2015 +0200

    lyx2lyx/lyx_2_2.py: fix for a lyx2lyx issue
    
    I don't understand why the string "shadowsize" is not already in the file 
because when I convert from format 474 to 489 it is added. So why is it not 
there when I convert from format 474 to 491.

diff --git a/lib/lyx2lyx/lyx_2_2.py b/lib/lyx2lyx/lyx_2_2.py
index d7f417e..cd8ec98 100644
--- a/lib/lyx2lyx/lyx_2_2.py
+++ b/lib/lyx2lyx/lyx_2_2.py
@@ -1082,10 +1082,18 @@ def convert_colorbox(document):
 
     i = 0
     while True:
+        # the routine convert_BoxFeatures adds already "shadowsize" to the box 
params
+        # but for an unknown reason this is not yet done before this routine 
is run
+        # therefore handle the case that shadowsize exists (for files in 
version 489  491)
+        # and that it don't exists
         i = find_token(document.body, "height_special", i)
         if i == -1:
             return
-        document.body.insert(i + 2, 'framecolor "black"\nbackgroundcolor 
"none"')
+        j = find_token(document.body, "shadowsize", i)
+        if j == i + 3:
+            document.body.insert(i + 4, 'framecolor "black"\nbackgroundcolor 
"none"')
+        else:
+            document.body.insert(i + 2, 'framecolor "black"\nbackgroundcolor 
"none"')
         i = i + 2