Struct PromptHistory 

pub struct PromptHistory { /* private fields */ }

History of submitted prompt lines.

cursor semantics:

• None → operator is at the live draft (newest).
• Some(i) → operator is recalling entries[i].

Stepping past index 0 (Up at oldest) clamps; stepping past the live draft (Down at newest) leaves cursor = None and restores the saved draft.

Implementations

impl PromptHistory

pub fn new() -> Self

pub fn with_capacity(cap: usize) -> Self

pub fn push(&mut self, line: &str)

Append a submitted line. Empty lines are ignored. Two consecutive identical entries are deduped (bash-style) so hammering Enter doesn’t bury everything else under copies of /status.

pub fn reset_cursor(&mut self)

Cursor reset — call after a successful submission so the next Up starts from the newest entry again.

pub fn recall_prev(&mut self) -> Option<&str>

Up arrow — step toward older history. Returns the recalled entry, or None if history is empty / already at oldest.

pub fn recall_next(&mut self) -> Option<&str>

Down arrow — step toward newer history. Returns the recalled entry, or None to signal “you’ve stepped past the newest entry; restore the live draft” (the buffer owns the saved draft and handles that branch).

pub const fn is_recalling(&self) -> bool

True when the operator is currently navigating history (not editing the live draft).

pub fn len(&self) -> usize

pub fn is_empty(&self) -> bool

Trait Implementations

impl Clone for PromptHistory

fn clone(&self) -> PromptHistory

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for PromptHistory

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

Formats the value using the given formatter.

impl Default for PromptHistory

fn default() -> PromptHistory

Returns the “default value” for a type.