editor_get_text: update NamedTemporaryfile mode

[jjmcdn]

With python3 the default behaviour of NamedTemporaryfile() has changed, such that now when jiracli would need to open a text editor and take input from the temporary file, you would experience a crash like the following:

Traceback (most recent call last):
  File "/usr/local/bin/jiracli", line 11, in <module>
    sys.exit(main())
  File "/usr/local/lib/python3.4/dist-packages/jiracli/__init__.py", line 568, in main
    desc = editor_get_text("-- describe the issue here")
  File "/usr/local/lib/python3.4/dist-packages/jiracli/__init__.py", line 61, in editor_get_text
    tf.write("-- lines starting with '--' will be ignored\n")
  File "/usr/lib/python3.4/tempfile.py", line 538, in func_wrapper
    return func(*args, **kwargs)
TypeError: 'str' does not support the buffer interface

Switching it to have an explicit 'mode="w"' parameter changed the error slightly:

Traceback (most recent call last):
  File "/usr/local/bin/jiracli", line 11, in <module>
    sys.exit(main())
  File "/usr/local/lib/python3.4/dist-packages/jiracli/__init__.py", line 568, in main
    desc = editor_get_text("-- describe the issue here")
  File "/usr/local/lib/python3.4/dist-packages/jiracli/__init__.py", line 67, in editor_get_text
    return "\n".join([line for line in tf.read().split('\n')
  File "/usr/lib/python3.4/tempfile.py", line 538, in func_wrapper
    return func(*args, **kwargs)
io.UnsupportedOperation: not readable

So we explicitly set the temporary file as 'text' in addition to being writeable.

Signed-off-by: Joe MacDonald joe_macdonald@mentor.com

[toabctl]

Great. Thanks!