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UndoEntry

Struct UndoEntry 

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pub struct UndoEntry {
    pub rope: Rope,
    pub cursor: (usize, usize),
    pub timestamp: SystemTime,
    pub marks: MarkSnapshot,
}
Expand description

A single entry in the undo or redo stack.

The timestamp records the wall-clock time at which the snapshot was taken (i.e. when push_undo was called), enabling the :earlier / :later time-travel ex commands to walk the stack by duration rather than by step count.

Stored as a ropey::Rope (O(1) Arc-clone) rather than a String so snapshot cost is negligible even on multi-MB buffers.

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§rope: Rope§cursor: (usize, usize)§timestamp: SystemTime§marks: MarkSnapshot

Local marks / jumplist / changelist / this-buffer’s-global-marks snapshot, so undo/redo restore mark-ish positions alongside the text instead of leaving them shifted by the edit being undone (audit-r2 fix 2). Default::default() (all empty) for callers that don’t populate it — restoring an all-empty snapshot is a no-op against a freshly-constructed buffer’s own empty state, so existing fixtures that only care about text/cursor stay valid.

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impl Clone for UndoEntry

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fn clone(&self) -> UndoEntry

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

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

Performs copy-assignment from source. Read more
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impl Debug for UndoEntry

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

Formats the value using the given formatter. Read more

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.