dejunk [options] <msg1> ... <msgN>
MH and NMH use directories and files for mail folders and mail messages, with everything for a user being stored in either ~/mail or ~/Mail. (Other directories are possible, but these are the most common.) Each mail folder is its own subdirectory. Each individual mail message is stored in its own file whose name is the message's number in its mailbox.
In most cases, deleting a message (with the rmm command) doesn't actually delete the message, but instead prepends a comma to the message's file name. The comma informs MH not to consider that an "active" mail message. Similarly, when a message is refiled from one folder to another, a copy remains in the original folder but it has a comma prepended to its name.
In restoring a message to the inbox, the junk message will be compared to the "deleted" inbox files in an attempt to find the original message number. File checksums are compared in order to find the original "deleted" file.
When specifying messages to restore, dejunk distinguishes between "deleted" junk messages (those with a comma prepended to the message number) and junk messages that haven't been deleted. In practical terms, this means that the actual file name in the junk folder must be given on the command line -- "dejunk ,12" and "dejunk 12" will act on different messages.
dejunk tries to restore a junk message to the same message number it had when it was junked. If that message number is already in use in the inbox, then the message will be moved to the end of the inbox's message list. There are three cases for restored files:
The junk folder is the folder named junk in the MH/NMH mail directory.
Copyright 2014 Wayne Morrison
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