Function pushToKillRing

src/utils/Cursor.ts:25–48

(
  text: string,
  direction: 'prepend' | 'append' = 'append',
)

let lastActionWasYank = false

export function pushToKillRing(
  text: string,
  direction: 'prepend' | 'append' = 'append',
): void {
  if (text.length > 0) {
    if (lastActionWasKill && killRing.length > 0) {
      // Accumulate with the most recent kill
      if (direction === 'prepend') {
        killRing[0] = text + killRing[0]
      } else {
        killRing[0] = killRing[0] + text
      }
    } else {
      // Add new entry to front of ring
      killRing.unshift(text)
      if (killRing.length > KILL_RING_MAX_SIZE) {
        killRing.pop()
      }
    }
    lastActionWasKill = true
    // Reset yank state when killing new text
    lastActionWasYank = false
  }
}

export function getLastKill(): string {
  return killRing[0] ?? ''