Module vim 

Vim-mode engine.

Implements a command grammar of the form

Command := count? (operator count? (motion | text-object)
                  | motion
                  | insert-entry
                  | misc)

The parser is a small state machine driven by one Input at a time. Motions and text objects produce a [Range] (with inclusive/exclusive / linewise classification). A single Operator implementation applies a range — so dw, d$, daw, and visual d all go through the same code path.

The most recent mutating command is stored in VimState::last_change so . can replay it.

Structs

Abbrev

A single abbreviation entry (insert-mode or cmdline-mode, recursive or noremap).

InsertSession

LastVisual

Saved visual-mode anchor + cursor for gv (re-enters the last visual selection). mode carries which visual flavour to restore; anchor / cursor mean different things per flavour:

SearchPrompt

Active / or ? search prompt. Text mutations drive the textarea’s live search pattern so matches highlight as the user types.

VimState

Enums

AbbrevKind

Classify a vim abbreviation lhs into its type.

AbbrevTrigger

Trigger kind for abbreviation expansion.

InsertDir

Direction for insert-mode arrow movement.

InsertEntry

InsertReason

LastChange

Information needed to replay a mutating change via ..

LastHorizontalMotion

Tracks which kind of horizontal jump was last performed so ; / , can dispatch to the correct repeat handler.

Mode

Motion

Operator

Pending

RangeKind

Classification determines how operators treat the range end.

ScrollDir

Scroll direction for scroll_full_page, scroll_half_page, and scroll_line controller methods.

TextObject

Constants

CHANGE_LIST_MAX

JUMPLIST_MAX

Max jumplist depth. Matches vim default.

MAX_COUNT

Vim caps count prefixes at 999,999,999 (:h count); mirror that cap on every value that can feed a 0..count apply loop so a pathological digit stream (<20 nines>x) saturating toward usize::MAX can’t freeze the editor. Matches CountAccumulator::MAX_COUNT in hjkl-vim.

SEARCH_HISTORY_MAX

Functions

drop_blame_if_left_normal

Drop the Blame view overlay whenever the input mode is no longer Normal. BLAME is a Normal-only read-only view; entering Insert/Visual/etc. (by keyboard, mouse drag, or programmatic transition) implicitly leaves it. Called from every mode-transition funnel so the FSM is the single source of truth — the host never has to police this.

install

Install the vim discipline on ed, replacing whatever was there.

op_is_change

true when op records a last_change entry for dot-repeat purposes. Promoted to pub in Phase 6.6e so hjkl-vim::normal can use it without duplicating the logic.

parse_motion

Parse the first key of a normal/visual-mode motion. Returns None for keys that don’t start a motion (operator keys, command keys, etc.). Promoted to pub in Phase 6.6e so hjkl-vim::normal can call it.

vim_editor

Build an Editor with the vim discipline already installed.