bpo-43607: Fix urllib handling of Windows paths with \\?\ prefix (GH-25539)
diff --git a/Lib/nturl2path.py b/Lib/nturl2path.py
index 853e660..61852af 100644
--- a/Lib/nturl2path.py
+++ b/Lib/nturl2path.py
@@ -50,6 +50,14 @@ def pathname2url(p):
# becomes
# ///C:/foo/bar/spam.foo
import urllib.parse
+ # First, clean up some special forms. We are going to sacrifice
+ # the additional information anyway
+ if p[:4] == '\\\\?\\':
+ p = p[4:]
+ if p[:4].upper() == 'UNC\\':
+ p = '\\' + p[4:]
+ elif p[1:2] != ':':
+ raise OSError('Bad path: ' + p)
if not ':' in p:
# No drive specifier, just convert slashes and quote the name
if p[:2] == '\\\\':
@@ -59,7 +67,7 @@ def pathname2url(p):
p = '\\\\' + p
components = p.split('\\')
return urllib.parse.quote('/'.join(components))
- comp = p.split(':')
+ comp = p.split(':', maxsplit=2)
if len(comp) != 2 or len(comp[0]) > 1:
error = 'Bad path: ' + p
raise OSError(error)