$ pip install git+github.com/xonsh/xonsh # https://github.com/xonsh/xonsh/commit/53bfe8c99ce3c8d4396fe7c2741b19fd6555af12
$ xonsh -V
xonsh/0.9.17
$ xonsh --no-rc
$ xontrib load histcpy
$ getout
xonsh: To log full traceback to a file set: $XONSH_TRACEBACK_LOGFILE = <filename>
Traceback (most recent call last):
File "/home/pc/miniconda3/lib/python3.7/site-packages/xonsh/proc.py", line 1439, in run
r = self.f(self.args, sp_stdin, sp_stdout, sp_stderr, spec, spec.stack)
File "/home/pc/miniconda3/lib/python3.7/site-packages/xonsh/proc.py", line 1238, in proxy_three
return f(args, stdin, stdout)
File "/home/pc/miniconda3/lib/python3.7/site-packages/xontrib/histcpy.py", line 130, in _getouts
out = outs[args[0]].strip()
IndexError: list index out of range