Handle files with no diffs awkwardly, for now.
    
        | author | 
        Steve Losh <steve@stevelosh.com> | 
    
    
        | date | 
        Wed, 03 Mar 2010 19:40:03 -0500 | 
    
    
    
        | parents | 
        12301b2a5461 
 | 
    
    
        | children | 
        bb734cf7e12c
 | 
    
    
        | branches/tags | 
        webpy-sucks  | 
    
    
        | files | 
        review/api.py  | 
    
Changes
    
--- a/review/api.py	Wed Mar 03 19:34:12 2010 -0500
+++ b/review/api.py	Wed Mar 03 19:40:03 2010 -0500
@@ -514,7 +514,10 @@
         line_level_comments = self.line_level_comments(filename)
         previous_n = -1
         
-        yield content[-1][0]
+        if content:
+            yield content[-1][0]
+        else:
+            yield 0
         
         for n, line in content:
             if n - 1 > previous_n: