116     for k, v in cmap.iteritems():

   116     for k, v in cmap.iteritems():

   117         dmap[v] = k

   117         dmap[v] = k

   118     def decode(s):

   118     def decode(s):

   119         i = 0

   119         i = 0

   120         while i < len(s):

   120         while i < len(s):

   122                 try:

   122                 try:

   123                     yield dmap[s[i:i + l]]

   123                     yield dmap[s[i:i + l]]

   124                     i += l

   124                     i += l

   125                     break

   125                     break

   126                 except KeyError:

   126                 except KeyError:

   127                     pass

   127                     pass

   128             else:

   128             else:

   129                 raise KeyError

   129                 raise KeyError

   131             lambda s: ''.join(list(decode(s))))

   132             lambda s: ''.join(list(decode(s))))

   132 

   133 

   133 _encodefname, _decodefname = _buildencodefun()

   134 _encodefname, _decodefname = _buildencodefun()

   134 

   135 

   135 def encodefilename(s):

   136 def encodefilename(s):

   157     'hello~3aworld~3f'

   158     'hello~3aworld~3f'

   158     >>> f(b'the\\x07quick\\xADshot')

   159     >>> f(b'the\\x07quick\\xADshot')

   159     'the~07quick~adshot'

   160     'the~07quick~adshot'

   160     '''

   161     '''

   161     xchr = pycompat.bytechr

   162     xchr = pycompat.bytechr

   163     for x in _reserved():

   164     for x in _reserved():

   164         cmap[xchr(x)] = "~%02x" % x

   165         cmap[xchr(x)] = "~%02x" % x

   165     for x in range(ord("A"), ord("Z") + 1):

   166     for x in range(ord("A"), ord("Z") + 1):

   166         cmap[xchr(x)] = xchr(x).lower()

   167         cmap[xchr(x)] = xchr(x).lower()

   167     def lowerencode(s):

   168     def lowerencode(s):