Expand tilde in path names

[jose1711]

It is a common practice to expand tilde in paths. Calcure does not do that and a user need to specify full path to a file/directory each time.

# this works
ics_event_files = /home/user/.calendars/gmail.ics

# this does not
ics_event_files = ~/.calendars/gmail.ics

[anufrievroman]

In general, I'd say I should improve working with paths by using path library more actively instead of just string everywhere. I think path lib is able to understand path in different OS with different conventions.

[anufrievroman]

I think I fixed it in e88d9a5 but it requires some testing, please check if it works for you.

[jose1711]

Thank you, that fixes it but I think the initial config.ini should now also contain ~ instead of /home/user.

[anufrievroman]

By default, I'd prefer a full system path because the ~ expansion only works in unix via $HOME variable. Not sure what would happen in Windows and what's considered home there.

[jose1711]

The expansion also works on Windows:

import os
os.path.expanduser(`~')
# 'C:\\Users\\username'
os.path.expanduser(`~otheruser')
# 'C:\\Users\\otheruser'

[anufrievroman]

Okay, with 78913c4 it is shortened by default. Although I didn't test on Windows yet.