doctest: do not embed non-ascii characters in docstring

Since the outer docstring is parsed as a unicode on Python 3, we have to
either double-escape or construct non-ascii string from ascii string.

mercurial/encoding.py

@@ -247,6 +247,7 b" def trim(s, width, ellipsis='', leftside"
     If 'leftside' is True, left side of string 's' is trimmed.
     'ellipsis' is always placed at trimmed side.
 
+    >>> from .node import bin
     >>> ellipsis = b'+++'
     >>> from . import encoding
     >>> encoding.encoding = b'utf-8'
@@ -285,7 +286,7 b" def trim(s, width, ellipsis='', leftside"
     +++
     >>> print trim(t, 4, ellipsis=ellipsis, leftside=True)
     +++
-    >>> t = b'\x11\x22\x33\x44\x55\x66\x77\x88\x99\xaa' # invalid byte sequence
+    >>> t = bin(b'112233445566778899aa') # invalid byte sequence
     >>> print trim(t, 12, ellipsis=ellipsis)
     \x11\x22\x33\x44\x55\x66\x77\x88\x99\xaa
     >>> print trim(t, 10, ellipsis=ellipsis)

mercurial/store.py

@@ -95,7 +95,7 b' def _buildencodefun():'
     >>> dec(b'hello~3aworld~3f')
     'hello:world?'
 
-    >>> enc(b'the\x07quick\xADshot')
+    >>> enc(b'the\\x07quick\\xADshot')
     'the~07quick~adshot'
     >>> dec(b'the~07quick~adshot')
     'the\\x07quick\\xadshot'
@@ -154,7 +154,7 b' def _buildlowerencodefun():'
     'hello'
     >>> f(b'hello:world?')
     'hello~3aworld~3f'
-    >>> f(b'the\x07quick\xADshot')
+    >>> f(b'the\\x07quick\\xADshot')
     'the~07quick~adshot'
     '''
     cmap = dict([(chr(x), chr(x)) for x in xrange(127)])