checking for new message fails with ArgumentError if INBOX is empty

[pmagwene]

If the Inbox is empty, checking for new messages with u fails with the following error:

VMAIL_ERROR: ArgumentError
comparison of Fixnum with nil failed

However, if there is at least one other message in the Inbox then updating works fine.

Relevant info: OSX 10.8.5, Ruby 2.1, Vmail 2.9.0, MacVim 7.4

[pmagwene]

This problem is also present with both Vmail 2.9.0 and 2.8.7 on a Linux machine tested with Ruby 1.9.3, Ruby 2.1.2 and MacVim 7.4.

[pmagwene]

The problem seems to be specific to the sequence of events where the user starts vmail and the inbox is empty, and then subsequently a new message is received and then the user checks email again.

To recreate it:

1. delete all messages from inbox
2. quit vmail
3. start vmail again
4. from a different client send email to gmail address
5. check for new emails in vmail

Here's the full error message:

Checking for new messages. Please wait...VMAIL_ERROR: ArgumentError
comparison of Fixnum with nil failed
/home/pmagwene/.rvm/gems/ruby-1.9.3-p547/gems/vmail-2.9.0/lib/vmail/imap_client.rb:226:in `>'
/home/pmagwene/.rvm/gems/ruby-1.9.3-p547/gems/vmail-2.9.0/lib/vmail/imap_client.rb:226:in `block in check_for_new_messages'
/home/pmagwene/.rvm/gems/ruby-1.9.3-p547/gems/vmail-2.9.0/lib/vmail/imap_client.rb:226:in `select'
/home/pmagwene/.rvm/gems/ruby-1.9.3-p547/gems/vmail-2.9.0/lib/vmail/imap_client.rb:226:in `check_for_new_messages'
/home/pmagwene/.rvm/gems/ruby-1.9.3-p547/gems/vmail-2.9.0/lib/vmail/imap_client.rb:248:in `update'
/home/pmagwene/.rvm/rubies/ruby-1.9.3-p547/lib/ruby/1.9.1/drb/drb.rb:1548:in `perform_without_block'
/home/pmagwene/.rvm/rubies/ruby-1.9.3-p547/lib/ruby/1.9.1/drb/drb.rb:1508:in `perform'
/home/pmagwene/.rvm/rubies/ruby-1.9.3-p547/lib/ruby/1.9.1/drb/drb.rb:1586:in `block (2 levels) in main_loop'
/home/pmagwene/.rvm/rubies/ruby-1.9.3-p547/lib/ruby/1.9.1/drb/drb.rb:1582:in `loop'
/home/pmagwene/.rvm/rubies/ruby-1.9.3-p547/lib/ruby/1.9.1/drb/drb.rb:1582:in `block in main_loop'

[notalex]

I have fixed this in the latest release(2.9.1). Please run gem install vmail to update. Do let me know if it works for you so that I may close this ticket.

[pmagwene]

Updated to 2.9.2, but unfortunately I'm still getting the same error message using the steps above to recreate.

For completeness, here's the debug log:

D, [2014-07-21T11:22:13.036685 #4129] DEBUG -- : loading mailboxes...
D, [2014-07-21T11:22:13.077440 #4129] DEBUG -- : Loaded mailboxes: ["INBOX", "Personal", "Receipts", "Travel", "Work", "[Gmail]/All Mail", "[Gmail]/Drafts", "[Gmail]/Important", "[Gmail]/Sent Mail", "[Gmail]/Spam", "[Gmail]/Starred", "[Gmail]/Trash"]
D, [2014-07-21T11:22:13.077750 #4129] DEBUG -- : Setting aliases to {"sent"=>"[Gmail]/Sent Mail", "all"=>"[Gmail]/All Mail", "starred"=>"[Gmail]/Starred", "important"=>"[Gmail]/Important", "drafts"=>"[Gmail]/Drafts", "spam"=>"[Gmail]/Spam", "trash"=>"[Gmail]/Trash"}
D, [2014-07-21T11:22:13.079765 #4129] DEBUG -- : Selecting mailbox "INBOX"
D, [2014-07-21T11:22:13.171838 #4129] DEBUG -- : RUBY0003 OK [READ-WRITE] INBOX selected. (Success)

D, [2014-07-21T11:22:13.172137 #4129] DEBUG -- : Done
D, [2014-07-21T11:22:13.173401 #4129] DEBUG -- : Getting mailbox status
D, [2014-07-21T11:22:13.173509 #4129] DEBUG -- : Getting highest message id
D, [2014-07-21T11:22:13.249353 #4129] DEBUG -- : NO HIGHEST ID: setting @num_messages to 1
D, [2014-07-21T11:22:13.355676 #4129] DEBUG -- : Setting window width to 80
D, [2014-07-21T11:22:13.430279 #4129] DEBUG -- : Selecting mailbox "INBOX"
D, [2014-07-21T11:22:13.513934 #4129] DEBUG -- : RUBY0005 OK [READ-WRITE] INBOX selected. (Success)

D, [2014-07-21T11:22:13.514061 #4129] DEBUG -- : Done
D, [2014-07-21T11:22:13.514408 #4129] DEBUG -- : Getting mailbox status
D, [2014-07-21T11:22:13.514438 #4129] DEBUG -- : Getting highest message id
D, [2014-07-21T11:22:13.590271 #4129] DEBUG -- : NO HIGHEST ID: setting @num_messages to 1
D, [2014-07-21T11:22:13.663257 #4129] DEBUG -- : #search: "\"all\""
D, [2014-07-21T11:22:13.663414 #4129] DEBUG -- : Query: "1:1 all"
D, [2014-07-21T11:22:32.333333 #4129] DEBUG -- : Checking for new messages
D, [2014-07-21T11:22:32.333410 #4129] DEBUG -- : Selecting mailbox "INBOX"
D, [2014-07-21T11:22:32.428020 #4129] DEBUG -- : RUBY0008 OK [READ-WRITE] INBOX selected. (Success)

D, [2014-07-21T11:22:32.428103 #4129] DEBUG -- : Done
D, [2014-07-21T11:22:32.428365 #4129] DEBUG -- : Getting mailbox status
D, [2014-07-21T11:22:32.428389 #4129] DEBUG -- : Getting highest message id
D, [2014-07-21T11:22:32.505000 #4129] DEBUG -- : Highest seqno: 1
D, [2014-07-21T11:22:32.505268 #4129] DEBUG -- : Search #update_query
D, [2014-07-21T11:22:32.582163 #4129] DEBUG -- : - got seqnos: [1]
D, [2014-07-21T11:22:32.582224 #4129] DEBUG -- : - getting seqnos >