UnicodeDecodeError on directory with unicode chars in prompt

[kernc]

Version: ipython 0.12

With prompt set to:

c.PromptManager.in_template = u'\r \w \$ '  # \r needed so prompt doesn't hang in the middle in some cases, 
                                            # \w prints current dir, 
                                            # u"←string modifier" doesn't really help at all

when I try to cd into a directory with unicode character in its name, a UnicodeDecodeError gets thrown.

How to reproduce:

1. set above prompt
2. /home/user $ mkdir č
3. /home/user $ cd č

Expected:
/home/user/č

Instead:
UnicodeDecodeError: 'ascii' codec can't decode byte 0xc4 in position 9: ordinal not in range(128)

Remarks:
With no \w in prompt, it works as expected.

[takluyver]

I think we just need to use os.getcwdu instead of os.getcwd in IPython.core.prompts.

[kernc]

yup, I'm reading through some old bugs now (got more to report :P), and it seems all os.getwd() calls should instead be os.getcwdu() (perhaps always and in all international apps).