Compressed Mailboxes

Commands for defining how to open, close, and append to compressed mailboxes.

:open-hook

Define the command used to decompress a mailbox for reading.

• open-hook <regex> <shell-command>

open-hook  '\\.gz$'  "gzip --stdout --decompress '%f' > '%t'"
open-hook  '\\.bz2$' "bzip2 --stdout --decompress '%f' > '%t'"
open-hook  '\\.xz$'  "xz --stdout --decompress '%f' > '%t'"

:close-hook

Define the command used to compress a mailbox after changes.

• close-hook <regex> <shell-command>

close-hook '\\.gz$'  "gzip --stdout '%t' > '%f'"
close-hook '\\.bz2$' "bzip2 --stdout '%t' > '%f'"
close-hook '\\.xz$'  "xz --stdout '%t' > '%f'"

:append-hook

Define the command used to append messages to a compressed mailbox without a full decompress/recompress cycle.

• append-hook <regex> <shell-command>

append-hook '\\.gz$' "gzip --stdout '%t' >> '%f'"