Function executeX

src/vim/operators.ts:171–194

(count: number, ctx: OperatorContext)

 * Execute delete character (x command).
 */
export function executeX(count: number, ctx: OperatorContext): void {
  const from = ctx.cursor.offset

  if (from >= ctx.text.length) return

  // Advance by graphemes, not code units
  let endCursor = ctx.cursor
  for (let i = 0; i < count && !endCursor.isAtEnd(); i++) {
    endCursor = endCursor.right()
  }
  const to = endCursor.offset

  const deleted = ctx.text.slice(from, to)
  const newText = ctx.text.slice(0, from) + ctx.text.slice(to)

  ctx.setRegister(deleted, false)
  ctx.setText(newText)
  const maxOff = Math.max(
    0,
    newText.length - (lastGrapheme(newText).length || 1),
  )
  ctx.setOffset(Math.min(from, maxOff))
  ctx.recordChange({ type: 'x', count })
}

/**
 * Execute replace character (r command).