Function buildOsc52Sequence

cli/src/utils/clipboard.ts:194–214

(text: string)

const OSC52_MAX_PAYLOAD = 32_000

function buildOsc52Sequence(text: string): string | null {
  const env = getCliEnv()
  if (env.TERM === 'dumb') return null

  const base64 = Buffer.from(text, 'utf8').toString('base64')
  if (base64.length > OSC52_MAX_PAYLOAD) return null

  const osc = `\x1b]52;c;${base64}\x07`

  // tmux: wrap in DCS passthrough with doubled ESC
  if (env.TMUX) {
    return `\x1bPtmux;${osc.replace(/\x1b/g, '\x1b\x1b')}\x1b\\`
  }

  // GNU screen: wrap in DCS passthrough
  if (env.STY) {
    return `\x1bP${osc}\x1b\\`
  }

  return osc
}

function tryCopyViaOsc52(text: string): boolean {
  const sequence = buildOsc52Sequence(text)