Outputs are not treated as UTF-8

[Baltoli]

I see that #158 allows inputs to be treated as UTF-8. When a test in my suite fails on a line including a unicode character, filecheck attempts to print it (here). This causes an error:

Traceback (most recent call last):
  File "/home/user/.local/bin/filecheck", line 8, in <module>
    sys.exit(main())
  File "/home/user/.local/lib/python3.6/site-packages/filecheck/FileCheck.py", line 648, in main
    print(last_read_line)
UnicodeEncodeError: 'ascii' codec can't encode character '\xa7' in position 17: ordinal not in range(128)

[stanislaw]

Hello, thanks for reporting this. Are you using the latest version 0.0.19? I cannot reproduce this locally. If you are using the latest version, I would like to understand the difference or get a failing test case if possible.

FileCheck is 3.6.2+, so I guess this would be the closest fix but first I want to reproduce this problem on my machine.

[Baltoli]

This may just be a quirk of the environment I'm running it in; I can't reproduce it locally on my main machine either so it's probably worth closing this. Thanks for your time in any case!

[stanislaw]

This may just be a quirk of the environment I'm running it in;

Actually, this comment is talking about something similar. Let me know if this behavior causes you much trouble - I see no problem of implementing the closest fix from that thread to fix the issue for your case.

[Baltoli]

Ah it's not a problem at all - I was able to make a change to an upstream docker image I rely on to install llvm-tools and so get reliable access to FileCheck itself.