'extractcode –shallow' returns cryptic error message

[johnmhoran]

Yesterday I ran extractcode (on Ubuntu 16.04, I believe) with a command I composed in LibreOffice, not realizing that the autocorrect feature had converted the double dash --shallow into a single emdash or endash (not sure which) -shallow. ScanCode returned the following rather cryptic error message:

$extractcode –shallow some.zip
Usage: extractcode [OPTIONS] <input>
Try 'extractcode --help' for help on options and arguments.

Traceback (most recent call last):
  File "/tmp/scancode-toolkit-develop/bin/extractcode", line 11, in <module>
    load_entry_point('scancode-toolkit', 'console_scripts', 'extractcode')()
  File "/tmp/scancode-toolkit-develop/local/lib/python2.7/site-packages/click/core.py", line 722, in __call__
    return self.main(*args, **kwargs)
  File "/tmp/scancode-toolkit-develop/src/scancode/utils.py", line 79, in main
    standalone_mode=standalone_mode, **extra)
  File "/tmp/scancode-toolkit-develop/local/lib/python2.7/site-packages/click/core.py", line 707, in main
    e.show()
  File "/tmp/scancode-toolkit-develop/local/lib/python2.7/site-packages/click/exceptions.py", line 48, in show
    echo('Error: %s' % self.format_message(), file=file, color=color)
  File "/tmp/scancode-toolkit-develop/local/lib/python2.7/site-packages/click/exceptions.py", line 84, in format_message
    return 'Invalid value for %s: %s' % (param_hint, self.message)
UnicodeDecodeError: 'ascii' codec can't decode byte 0xe2 in position 6: ordinal not in range(128)