Decode modified UTF-7 encoded mailbox names

[asutherland]

Non-ASCII characters in mailbox names get encoded into a funky modified utf-7 encoding:
https://tools.ietf.org/html/rfc3501#section-5.1.3

Here's a patch where I decode the name and cram it in a 'displayName' field for each box for getBoxes in our somewhat divergent fork of imap.js. It has some unit tests in our idiom too.
https://github.com/mozilla-b2g/gaia-email-libs-and-more/pull/80/files

If you like the idea of adding displayName or otherwise exposing the decoded name in the library, I am happy to provide a pull request against the current master branch. Or if you just want to transform what's on that patch, that's also cool.

[mscdex]

I'd accept a pull request for that. Exporting the decoding function in imap.utilities.js would be great.

[chotiwat]

There is already a module for encoding/decoding UTF-7 for IMAP here https://github.com/kkaefer/utf7.

[mscdex]

@asutherland Would kkaefer's utf7 module work for you as well? If so, I can just add it as a dependency and use that.

[asutherland]

@mscdex It's got unit tests! I can't argue with unit tests!

[mscdex]

Resolved in ec01e96. Thank you both :-)