[tor-bugs] #28921 [Core Tor/Stem]: tor-prompt command 'GETINFO desc/all-recent > /dev/null' fails

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#28921: tor-prompt command 'GETINFO desc/all-recent > /dev/null' fails
------------------------+-------------------------------
 Reporter:  wagon       |          Owner:  atagar
     Type:  defect      |         Status:  assigned
 Priority:  Medium      |      Component:  Core Tor/Stem
  Version:              |       Severity:  Normal
 Keywords:  descriptor  |  Actual Points:
Parent ID:              |         Points:
 Reviewer:              |        Sponsor:
------------------------+-------------------------------
 If redirection is used, it fails:
 {{{
 $ tor-prompt --run 'GETINFO desc/all-recent' 1>/dev/null
 Traceback (most recent call last):
   File "/path/to/stem/tor-prompt", line 8, in <module>
     stem.interpreter.main()
   File "/path/to/stem/stem/interpreter/__init__.py", line 151, in main
     interpreter.run_command(args.run_cmd, print_response = True)
   File "/path/to/stem/stem/util/conf.py", line 289, in wrapped
     return func(*args, config = config, **kwargs)
   File "/path/to/stem/stem/interpreter/commands.py", line 381, in
 run_command
     print(output)
 UnicodeEncodeError: 'ascii' codec can't encode character u'\u021b' in
 position 1237805: ordinal not in range(128)
 }}}
 If redirection is not used, it works.

 I think atagar is right in his comment:
 > I suspect the issue is that you're using python3, and that `tor-prompt`
 is using `print()` which expect unicode. Server descriptors can have non-
 ascii content on contact lines which can cause the stacktrace you cited
 above.

 > I probably need to add some escaping within `tor-prompt`.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/28921>
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