Merged revisions 77102 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk

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  r77102 | benjamin.peterson | 2009-12-28 17:50:41 -0600 (Mon, 28 Dec 2009) | 50 lines

  Merged revisions 76871-76872,77093-77095,77097-77101 via svnmerge from
  svn+ssh://pythondev@svn.python.org/sandbox/trunk/2to3/lib2to3

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    r76871 | benjamin.peterson | 2009-12-17 20:49:21 -0600 (Thu, 17 Dec 2009) | 1 line

    handle unencodable diffs gracefully #5093
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    r76872 | benjamin.peterson | 2009-12-17 20:51:37 -0600 (Thu, 17 Dec 2009) | 1 line

    fix emacs header
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    r77093 | benjamin.peterson | 2009-12-28 14:43:32 -0600 (Mon, 28 Dec 2009) | 7 lines

    replace callable(x) with isinstance(x, collections.Callable) #7006

    This is a more accurate translation than hasattr(x, '__call__') which failed in
    the case that somebody had put __call__ in the instance dictionary.

    Patch mostly by Joe Amenta.
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    r77094 | benjamin.peterson | 2009-12-28 14:45:13 -0600 (Mon, 28 Dec 2009) | 2 lines

    deuglify imports
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    r77095 | benjamin.peterson | 2009-12-28 14:49:23 -0600 (Mon, 28 Dec 2009) | 1 line

    remove unused flag
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    r77097 | benjamin.peterson | 2009-12-28 16:12:13 -0600 (Mon, 28 Dec 2009) | 2 lines

    clean up imports and whitespace
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    r77098 | benjamin.peterson | 2009-12-28 16:43:35 -0600 (Mon, 28 Dec 2009) | 1 line

    *** empty log message ***
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    r77099 | benjamin.peterson | 2009-12-28 16:45:10 -0600 (Mon, 28 Dec 2009) | 1 line

    revert unintended change
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    r77100 | benjamin.peterson | 2009-12-28 16:53:21 -0600 (Mon, 28 Dec 2009) | 1 line

    revert unintended changes
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    r77101 | benjamin.peterson | 2009-12-28 17:46:02 -0600 (Mon, 28 Dec 2009) | 1 line

    normalize whitespace
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diff --git a/Lib/lib2to3/main.py b/Lib/lib2to3/main.py
index 6e09693..6c57e67 100644
--- a/Lib/lib2to3/main.py
+++ b/Lib/lib2to3/main.py
@@ -60,8 +60,14 @@
         else:
             self.log_message("Refactored %s", filename)
             if self.show_diffs:
-                for line in diff_texts(old, new, filename):
-                    print(line)
+                diff_lines = diff_texts(old, new, filename)
+                try:
+                    for line in diff_lines:
+                        print(line)
+                except UnicodeEncodeError:
+                    warn("couldn't encode %s's diff for your terminal" %
+                         (filename,))
+                    return
 
 def warn(msg):
     print("WARNING: %s" % (msg,), file=sys.stderr)