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+.\"
+.\" %nmhwarning%
+.\"
+.TH MHSIGN %manext1% "%nmhdate%" MH.6.8 [%nmhversion%]
+.SH NAME
+mhsign \- sign or encrypt a message with gnupg
+.SH SYNOPSIS
+.HP 5
+.na
+.B mhsign
+.RB [ \-encrypt ]
+.RB [ \-mime ]
+.I file
+.RB [ \-Version ]
+.RB [ \-help ]
+.ad
+.SH DESCRIPTION
+.B mhsign
+is a script to simplify signing and encrypting command line
+MH mail, using gnupg.
+.PP
+.B mhsign
+is normally invoked automatically by
+.BR send .
+When used directly, the source file, typically an MH draft file,
+is replaced by the signed or encrypted message.
+To permit recovery from mistakes,
+a backup copy of the original file is saved, under the same name
+with `.orig' appended.
+.PP
+The following options are recognized:
+.TP
+.B \-encrypt
+Encrypt to recipients, in addition to signing.
+The message will also be encrypted to the signing key.
+.TP
+.B \-mime
+Use the PGP/MIME standard for signing and encrypting.
+This is automatic if the message is already a multipart MIME message.
+Otherwise the default is to sign/encrypt in the old-fashioned
+non-MIME manner, for compatibility with older software.
+.QP
+When a message is signed but not encrypted, using the PGP/MIME
+formatting, any line beginning with ``From '' will be indented, and any
+trailing spaces will be removed from lines in the message body.
+This is to ensure maximum compatibility.
+Where trailing blanks are important (sending patches, for example),
+it would be wise to use quoted-printable or other MIME encoding
+for that component.
+.PP
+The signing key is automatically determinded by gnupg,
+unless the the profile entry
+.IR Pgpkey
+defines it.
+The environment variable
+.IR MMHPGPKEY
+has highest precedence and can be used to overrule the key uid temporarily.
+.PP
+For encryption, the public keys of the recipients are taken from
+the gnupg keyring.
+To handle exceptions, e.g. recipient addresses that do not
+match the key uid in the keyring, a file named
+.I pgpkeys
+may be used.
+It should be located either in the gnupg directory (normally $HOME/.gnupg)
+or in the mmh directory (normally $HOME/.mmh).
+If both files exist, the one in the gnupg directory takes precedence.
+.PP
+A sample
+.I pgpkeys
+file:
+.sp
+.RS 5
+.nf
+0x88888888	john@nowhere.example.org
+e5fda812	meillo@marmaro.de
+.fi
+.RE
+
+.SH FILES
+.fc ^ ~
+.nf
+.ta \w'%etcdir%/ExtraBigFileName  'u
+^$HOME/.gnupg/pgpkeys~^Pubkey exceptions for encrypting
+^$HOME/.mmh/pgpkeys~^... alternative location
+.fi
+
+.SH "PROFILE COMPONENTS"
+.fc ^ ~
+.nf
+.ta 2.4i
+.ta \w'ExtraBigProfileName  'u
+^Pgpkey:~^To determine the user's signing key
+.fi
+
+.SH "SEE ALSO"
+whom(1), send(1), mhpgp(1), gpg(1)
+
+.SH DEFAULTS
+None
+
+.SH CONTEXT
+None
+
+.SH BUGS
+None