Function seekSequence

packages/arctic/src/patch/index.ts:410–430

(lines: string[], pattern: string[], startIndex: number)

  }

  function seekSequence(lines: string[], pattern: string[], startIndex: number): number {
    if (pattern.length === 0) return -1

    // Simple substring search implementation
    for (let i = startIndex; i <= lines.length - pattern.length; i++) {
      let matches = true

      for (let j = 0; j < pattern.length; j++) {
        if (lines[i + j] !== pattern[j]) {
          matches = false
          break
        }
      }

      if (matches) {
        return i
      }
    }

    return -1
  }

  function generateUnifiedDiff(oldContent: string, newContent: string): string {
    const oldLines = oldContent.split("\n")