$ be show 31cd490d-a1c2-4ab3-8284-d80395e34dd2

works as expected, but

$ be show 31cd490d-a1c2-4ab3-8284-d80395e34dd2 | grep something
Traceback (most recent call last):
  File "/home/wking/bin/be", line 30, in <module>
    sys.exit(cmdutil.execute(sys.argv[1], sys.argv[2:]))
  File "/home/wking/src/fun/be-bugfix/libbe/cmdutil.py", line 57, in execute
  File "/home/wking/src/fun/be/be.wtk/becommands/show.py", line 44, in execute
    print bug.string(show_comments=True)
UnicodeEncodeError: 'ascii' codec can't encode character u'\u2019' in position 2100: ordinal not in range(128)

By the way, u2019 is a fancy apostrophe.