Use of "ly indent" via stdin/out

[patrickgardella]

I am trying to use "ly indent" from vim as an external command. Essentially using the built-in stdin/stdout functionality of ly like this:
cat music.ly | ly indent

However, I get a Python error when I try

Traceback (most recent call last):
  File "/usr/local/bin/ly", line 4, in <module>
    sys.exit(main())
  File "/Library/Python/2.7/site-packages/ly/cli/main.py", line 262, in main
    opts, commands, files = parse_command_line()
  File "/Library/Python/2.7/site-packages/ly/cli/main.py", line 185, in parse_command_line
    for arg in args:
  File "/Library/Python/2.7/site-packages/ly/cli/main.py", line 172, in <genexpr>
    args = (a.decode(sys.stdin.encoding) for a in sys.argv[1:])
TypeError: decode() argument 1 must be string, not None

The normal command line functionality works:
ly indent music.ly -o music.ly

I'm using the latest python-ly that pip installs, 0.9.2.

Am I missing something on the command line, or is this a bug?

Patrick

[wbsoft]

Thanks for reporting! This is indeed a bug. The code erroneously assumes that sys.stdin.encoding always returns a valid encoding name (on my system it is 'UTF-8').

When piping input from a file, the encoding attribute is None and this code fails in parsing command line arguments.