[meld/VersionControlRework: 50/123] vc._vc: Further simplify lookup_files

[Kai Willadsen <kaiw src gnome org>]

commit 7864ace3128750ba4de07a5518ae9ceac7b3f5fb
Author: Kai Willadsen <kai willadsen gmail com>
Date:   Sun Mar 29 10:39:29 2015 +1000

    vc._vc: Further simplify lookup_files
    
    The unused directory argument is now required and will always be equal
    to what this code previously looked up.

 meld/vc/_vc.py |    8 ++------
 1 files changed, 2 insertions(+), 6 deletions(-)
---
diff --git a/meld/vc/_vc.py b/meld/vc/_vc.py
index 65cf7ae..3091157 100644
--- a/meld/vc/_vc.py
+++ b/meld/vc/_vc.py
@@ -208,12 +208,8 @@ class Vc(object):
         return dirs + files
 
     def lookup_files(self, dirs, files, directory):
-        # Assumes that all files are in the same directory. files is an array
-        # of (name, path) tuples.
-        if len(dirs):
-            directory = os.path.dirname(dirs[0][1])
-        elif len(files):
-            directory = os.path.dirname(files[0][1])
+        # All dirs and files must be direct children of same directory.
+        # dirs and files are lists of (name, path) tuples.
         return self._get_dirsandfiles(directory, dirs, files)
 
     def _get_dirsandfiles(self, base, dirs, files):