Enum Function 

pub enum Function {
    Quit,
    Abort,
    Down,
    Up,
    PageDown,
    PageUp,
    First,
    Last,
    View,
    Delete,
    Undelete,
    Flag,
    ToggleNew,
    MarkAllRead,
    Sync,
    Compose,
    Reply,
    GroupReply,
    ListReply,
    Forward,
    Sort,
    Limit,
    Search,
    SearchReverse,
    SearchNext,
    NextNew,
    PrevNew,
    ChangeMailbox,
    ChangeMailboxReadOnly,
    Folders,
    Attachments,
    FoldThread,
    FoldAll,
    Print,
    Tag,
    TagPrefix,
    DeleteThread,
    UndeleteThread,
    TagThread,
    DeleteSubthread,
    UndeleteSubthread,
    NextThread,
    PrevThread,
    BreakThread,
    LinkThreads,
    ReadThread,
    ReadSubthread,
    TagSubthread,
    ParentMessage,
    RootMessage,
    EditLabel,
    ShowVersion,
    ShowLimit,
    ToggleWrite,
    DisplayAddress,
    PageTop,
    PageMiddle,
    PageBottom,
    Undo,
    DeletePattern,
    UndeletePattern,
    TagPattern,
    UntagPattern,
    FetchMail,
    Save,
    Copy,
    DecodeSave,
    DecodeCopy,
    Pipe,
    Bounce,
    Resend,
    Edit,
    SidebarToggle,
    SidebarNext,
    SidebarPrev,
    SidebarOpen,
    CreateAlias,
    Query,
    Notmuch,
    EnterCommand,
    Shell,
    Redraw,
    Suspend,
    Help,
    NextUnreadMailbox,
    PurgeMessage,
    MarkMessage,
    ErrorHistory,
    WhatKey,
    ListAction,
    Urls,
}

One thing the index can be told to do, under the name mutt gives it. A front end binds keys or menu items to these; bind and :exec name them straight out.

Variants

Quit

Abort

Down

Up

PageDown

PageUp

First

Last

View

Delete

Undelete

Flag

ToggleNew

MarkAllRead

Every message in the mailbox marked read, one undo step. mutt never had this; asked for (2026-09-01).

Sync

Compose

Reply

GroupReply

ListReply

Forward

Sort

Limit

Search

SearchReverse

SearchNext

NextNew

PrevNew

ChangeMailbox

ChangeMailboxReadOnly

Folders

Attachments

FoldThread

FoldAll

Print

Tag

TagPrefix

DeleteThread

UndeleteThread

TagThread

DeleteSubthread

UndeleteSubthread

NextThread

PrevThread

BreakThread

LinkThreads

ReadThread

ReadSubthread

TagSubthread

ParentMessage

RootMessage

EditLabel

ShowVersion

ShowLimit

ToggleWrite

DisplayAddress

PageTop

PageMiddle

PageBottom

Undo

DeletePattern

UndeletePattern

TagPattern

UntagPattern

FetchMail

Save

Copy

DecodeSave

DecodeCopy

Pipe

Bounce

Resend

Edit

SidebarToggle

SidebarNext

SidebarPrev

SidebarOpen

CreateAlias

Query

Notmuch

EnterCommand

Shell

Redraw

Suspend

Help

NextUnreadMailbox

mutt’s next-unread-mailbox: open the next configured mailbox holding new mail.

PurgeMessage

mutt’s purge-message: delete, bypassing $trash.

MarkMessage

mutt’s mark-message: a hotkey that jumps back here.

ErrorHistory

mutt’s error-history: the recent complaints on a screen.

WhatKey

mutt’s what-key: say what the next keys are.

ListAction

mutt’s list-action: RFC 2369 List-* actions of the message.

Urls

The message’s links in a list, to open or copy one (rmut’s own, urlview built in).

Implementations

impl Function

pub fn name(self) -> &'static str

pub fn describe(self) -> &'static str

pub fn all() -> &'static [Function]

Every function, in the order the help screen and a menu bar want them.

pub fn from_name(name: &str) -> Option<Function>

pub fn takes_tagged(self) -> bool

Which functions ; (tag-prefix) can hand the tagged set to. The rest say so rather than quietly acting on one message: resend and edit open a draft or an editor, of which rmut has one at a time.

Trait Implementations

impl Clone for Function

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for Function

impl Debug for Function

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for Function

impl PartialEq for Function

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for Function