IMAP.status doesn't work when mailbox name contains a space

[mpscholten]

Fixes pStatusLine so it consumes the mailbox name as either an unquoted atom or a quoted string with escaped characters before parsing the status list.

This addresses qnikst's review feedback: the previous patch handled spaces but still stopped too early when a quoted mailbox contained an escaped double quote.

Also enables the existing imap-parsers HUnit test suite in Cabal and updates the repository URL from git:// to https:// so current cabal check passes.

Regression coverage:

• STATUS "[Gmail]/Alle Nachrichten" ...
• STATUS "foo\" bar" ...
• existing unquoted mailbox status response

Validation:

• Before the parser fix, cabal test imap-parsers --test-show-details=direct failed on the quoted mailbox cases.
• nix shell nixpkgs#cabal-install nixpkgs#ghc --command cabal test imap-parsers --test-show-details=direct
• nix shell nixpkgs#cabal-install nixpkgs#ghc --command cabal build all
• nix shell nixpkgs#cabal-install nixpkgs#ghc --command cabal check (only the existing CHANGELOG doc-place warning remains)
• git diff --check

[mpscholten]

@qnikst could you take a look at this? (and if you're on this maybe also the other open PR) :)

[qnikst]

Hello! Thanks for the patch, but I expect that it would need some more love, but correct me if I'm wrong.

I was not able to get through all the RFC, but I expect that in case if mailbox has special characters like spaces it MUST be quoted, and if there is already a double quote in the protocol it has to be escaped by the \ symbol. If this is correct then the current approach is only a partial solution: it does indeed fix the case of spaces, but does not fix it for the case if there are double quotes in the mailbox.

If you already have a good system to test and check the fix can you please try that case?

[qnikst]

I'd suggest using something like:

unquote `manyTill` char '"' ... where
  unquote = asum [ char '\' >> anyChar, anyChar]

This way we will be able to consume a quoted double quote and return it from the parser and will not stop before we needed.

[qnikst]

@mpscholten looks great thanks! I'm happy to merge when undrafted :)

[mpscholten]

Thanks! It is ready for review now :)

[qnikst]

@mpscholten thanks for the work and patience.

I'll try to make a release (but possibly will be able to only after/or during Zurihac)

[mpscholten]

thanks 👍 I have some more patches coming

Will be at Zurihac tomorrow as well (already at HIW right now)