138     '''return the canonical path of myname, given cwd and root'''

   138     '''return the canonical path of myname, given cwd and root

   139 

   140     >>> def check(root, cwd, myname):

   141     ...     a = pathauditor(root, realfs=False)

   142     ...     try:

   143     ...         return canonpath(root, cwd, myname, a)

   144     ...     except error.Abort:

   145     ...         return 'aborted'

   146     >>> def unixonly(root, cwd, myname, expected='aborted'):

   147     ...     if pycompat.iswindows:

   148     ...         return expected

   149     ...     return check(root, cwd, myname)

   150     >>> def winonly(root, cwd, myname, expected='aborted'):

   151     ...     if not pycompat.iswindows:

   152     ...         return expected

   153     ...     return check(root, cwd, myname)

   154     >>> winonly(b'd:\\\\repo', b'c:\\\\dir', b'filename')

   155     'aborted'

   156     >>> winonly(b'c:\\\\repo', b'c:\\\\dir', b'filename')

   157     'aborted'

   158     >>> winonly(b'c:\\\\repo', b'c:\\\\', b'filename')

   159     'aborted'

   160     >>> winonly(b'c:\\\\repo', b'c:\\\\', b'repo\\\\filename',

   161     ...         b'filename')

   162     'filename'

   163     >>> winonly(b'c:\\\\repo', b'c:\\\\repo', b'filename', b'filename')

   164     'filename'

   165     >>> winonly(b'c:\\\\repo', b'c:\\\\repo\\\\subdir', b'filename',

   166     ...         b'subdir/filename')

   167     'subdir/filename'

   168     >>> unixonly(b'/repo', b'/dir', b'filename')

   169     'aborted'

   170     >>> unixonly(b'/repo', b'/', b'filename')

   171     'aborted'

   172     >>> unixonly(b'/repo', b'/', b'repo/filename', b'filename')

   173     'filename'

   174     >>> unixonly(b'/repo', b'/repo', b'filename', b'filename')

   175     'filename'

   176     >>> unixonly(b'/repo', b'/repo/subdir', b'filename', b'subdir/filename')

   177     'subdir/filename'

   178     '''