revert semantics of commonprefix to work character-by-character
diff --git a/Lib/posixpath.py b/Lib/posixpath.py
index d8da4ef..f7e0161 100644
--- a/Lib/posixpath.py
+++ b/Lib/posixpath.py
@@ -118,18 +118,14 @@
def commonprefix(m):
"Given a list of pathnames, returns the longest common leading component"
if not m: return ''
- n = m[:]
- for i in range(len(n)):
- n[i] = n[i].split("/")
-
- prefix = n[0]
- for item in n:
+ prefix = m[0]
+ for item in m:
for i in range(len(prefix)):
if prefix[:i+1] <> item[:i+1]:
prefix = prefix[:i]
if i == 0: return ''
break
- return "/".join(prefix)
+ return prefix
# Get size, mtime, atime of files.