NAME

       notmuch-dump - creates a plain-text dump of the tags of each message

SYNOPSIS

       notmuch  dump  [--gzip]  [--format=(batch-tag|sup)]  [--output=<file>] [--] [<search-term>
       ...]

DESCRIPTION

       Dump tags for messages matching the given search terms.

       Output is to the given filename, if any, or to stdout.

       These tags are the only data in the notmuch database that  can't  be  recreated  from  the
       messages  themselves.  The  output of notmuch dump is therefore the only critical thing to
       backup (and much more friendly to incremental backup than the native database files.)

       See notmuch-search-terms(7) for details of the supported syntax for  <search-terms>.  With
       no search terms, a dump of all messages in the database will be generated. A "--" argument
       instructs notmuch that the remaining arguments are search terms.

       Supported options for dump include

          --gzip Compress the output in a format compatible with gzip(1).

          --format=(sup|batch-tag)
                 Notmuch restore supports two plain text dump formats, both with  one  message-id
                 per line, followed by a list of tags.

                 batch-tag
                     The  default  batch-tag  dump  format  is  intended  to  more robust against
                     malformed  message-ids  and  tags  containing  whitespace  or   non-ascii(7)
                     characters. Each line has the form
                        +<encoded-tag> +<encoded-tag> ... -- id:<quoted-message-id>

                     Tags  are  hex-encoded  by  replacing  every  byte  not  matching  the regex
                     [A-Za-z0-9@=.,_+-] with %nn where nn is the  two  digit  hex  encoding.  The
                     message ID is a valid Xapian query, quoted using Xapian boolean term quoting
                     rules: if the ID contains whitespace or a  close  paren  or  starts  with  a
                     double  quote, it must be enclosed in double quotes and double quotes inside
                     the ID must be doubled. The astute reader will notice this is a special case
                     of  the  batch  input  format  for  notmuch-tag(1);  note  that  the  single
                     message-id query is mandatory for notmuch-restore(1).

                 sup
                     The sup dump file format is specifically chosen to be  compatible  with  the
                     format of files produced by sup-dump. So if you've previously been using sup
                     for mail, then the notmuch restore command provides you a way to import  all
                     of your tags (or labels as sup calls them). Each line has the following form
                        <message-id> ( <tag> ... )

                     with  zero  or  more  tags  are  separated  by spaces. Note that (malformed)
                     message-ids may contain arbitrary non-null characters. Note also  that  tags
                     with spaces will not be correctly restored with this format.

          --output=<filename>
                 Write output to given file instead of stdout.

SEE ALSO

       notmuch(1),   notmuch-config(1),  notmuch-count(1),  notmuch-hooks(5),  notmuch-insert(1),
       notmuch-new(1),       notmuch-reply(1),       notmuch-restore(1),       notmuch-search(1),
       notmuch-search-terms(7), notmuch-show(1), notmuch-tag(1)

AUTHOR

       Carl Worth and many others

COPYRIGHT

       2009-2015, Carl Worth and many others