In readlink, prefer the display path to the substitute path.

Closes #222

newsfragments/222.feature.rst

@@ -0,0 +1 @@
+In readlink, prefer the display path to the substitute path.

path/__init__.py

@@ -79,7 +79,7 @@
     from typing_extensions import Literal
 
 from . import classes, masks, matchers
-from .compat.py38 import removesuffix
+from .compat.py38 import removeprefix, removesuffix
 
 __all__ = ['Path', 'TempDir']
 
@@ -1492,7 +1492,7 @@ def readlink(self):
 
         .. seealso:: :meth:`readlinkabs`, :func:`os.readlink`
         """
-        return self._next_class(os.readlink(self))
+        return self._next_class(removeprefix(os.readlink(self), '\\\\?\\'))
 
     def readlinkabs(self):
         """Return the path to which this symbolic link points.

path/compat/py38.py

@@ -8,7 +8,16 @@ def removesuffix(self, suffix):
             return self[: -len(suffix)]
         else:
             return self[:]
+
+    def removeprefix(self, prefix):
+        if self.startswith(prefix):
+            return self[len(prefix) :]
+        else:
+            return self[:]
 else:
 
     def removesuffix(self, suffix):
         return self.removesuffix(suffix)
+
+    def removeprefix(self, prefix):
+        return self.removeprefix(prefix)