diff options
| -rw-r--r-- | Lib/posixpath.py | 17 |
1 files changed, 7 insertions, 10 deletions
diff --git a/Lib/posixpath.py b/Lib/posixpath.py index 7f907ef..7ee4911 100644 --- a/Lib/posixpath.py +++ b/Lib/posixpath.py @@ -123,16 +123,13 @@ def dirname(p): def commonprefix(m): "Given a list of pathnames, returns the longest common leading component" if not m: return '' - 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 prefix - + s1 = min(m) + s2 = max(m) + n = min(len(s1), len(s2)) + for i in xrange(n): + if s1[i] != s2[i]: + return s1[:i] + return s1[:n] # Get size, mtime, atime of files. |