---
name: "mewl"
section: "1"
platform: "linux"
package: "mew-beta-bin"
version: "7.0.50~6.8+0.20221129-4"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/mewl"
---

# mewl(1)

Message scanner for Mew 4 or later

## NAME

mewl - Message scanner for Mew 4 or later

## SYNOPSIS

mewl \[*options*\] \[*folder* \[*range*\]\]

## DESCRIPTION

The **mewl** utility extracts necessary fields from messages stored in folders. This command is necessary for Mew to implement the asynchronous feature.

The options are as follows:

- **-a**

  Print all necessary fields when picking.

- **-b** *dir*

  Set the Mail home to *dir*.

- **-c** *bodylen*

  Set the max body length to be extracted to *bodylen*.

- **-d** *field*

  Set the field to be extracted to *field*.

- **-e** *command*

  Specify an external *command* to fetch mailbox.

- **-m** *options*

  Specify  *options* for *command*.

- **-f** *fields*

  Specify  *fields* to display.

- **-h**

  Display this help message.

- **-i** *file*

  Set the input stream to *file*.

- **-l** *length*

  Set the max field length to be extracted to *length*. The default value is 3. 0 means no limit.

- **-n**

  Don't use fstat().

- **-p** *pattern*

  Specify the pick *pattern*.

- **-s** *src*

  Set message source to *src* : '+folder range'.

- **-w**

  Wait for stdio input to synchronize.

- **-v**

  Display the version.

- **-x** *suffix*

  Use this  *suffix*.

  Definitions of the symbols above are as follows:

- *range*

  N \| \[start\]-\[end\] \| last:N

- *pattern*

  ´key=val' \| 'key!=val' \| '!\<pattern\>' \| '(\<pattern\>)' \| '\<pattern\>&\<pattern\>' \| '\<pattern\>\|\<pattern\>'

## BUGS

If a field is long, only the beginning three lines are extracted  by default.