idodeclare/GPGMail — comment on commit 693237ace90a140378feb5dc8fbbafc1122c6a7c
File: Resources/en.lproj/GPGMail.strings line 291
By lukele:

A different string for the singular version exists, so there's no need to use (s).

See MESSAGE_BANNER_PGP_ATTACHMENT_VERIFY_ERROR_TITLE vs. MESSAGE_BANNER_PGP_ATTACHMENTS_VERIFY_ERROR_TITLE