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.Dd September 6, 2017
.Dt MFLOW 1
.Os
.Sh NAME
.Nm mflow
.Nd reflow format=flowed plain text mails
.Sh SYNOPSIS
.Nm
.Op Fl f
.Op Fl q
.Op Fl w Ar width
\&<
.Ar file
.Sh DESCRIPTION
.Nm
reformats the standard input according to the rules
of RFC 3676.
.Ev PIPE_CONTENTTYPE
is inspected, making this a suitable filter
for
.Sq text/plain
messages for
.Xr mshow 1 .
Mails not using
.Sq format=flowed
are output as is.
.Pp
Text is reflowed (where allowed) to
fit the width given in the environment variable
.Ev COLUMNS ,
the terminal width, or 80 characters by default.
.Pp
If defined,
the environment variable
.Ev MAXCOLUMNS
specifies the maximum line length.
.Pp
The options are as follows:
.Bl -tag -width Ds
.It Fl f
Force line wrapping of long lines.
.It Fl q
Prefix lines with
.Sq Li \&> .
Can be used multiple times.
.It Fl w Ar width
Set maximum line length to
.Ar width .
.El
.Sh EXIT STATUS
.Ex -std
.Sh SEE ALSO
.Xr mshow 1
.Rs
.%A R. Gellens
.%D February 2004
.%R RFC 3676
.%T The Text/Plain Format and DelSp Parameters
.Re
.Sh AUTHORS
.An Leah Neukirchen Aq Mt leah@vuxu.org
.Sh LICENSE
.Nm
is in the public domain.
.Pp
To the extent possible under law,
the creator of this work
has waived all copyright and related or
neighboring rights to this work.
.Pp
.Lk http://creativecommons.org/publicdomain/zero/1.0/
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