Skip to content

fix(cli): handle OSC52 clipboard passthrough properly under gnu screen #26492

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
valdemardi wants to merge 2 commits into
base: dev
Choose a base branch
from
+21 −2
Open

fix(cli): handle OSC52 clipboard passthrough properly under gnu screen #26492

Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
045f685
fix(cli): use correct osc52 passthrough for gnu screen to fix copying
valdemardi May 9, 2026
5930027
fix(cli): split osc52 for gnu screen to enable copying longer passages
valdemardi May 9, 2026
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
23 changes: 21 additions & 2 deletions packages/opencode/src/cli/cmd/tui/util/clipboard.ts
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -24,10 +24,29 @@ const getClipboardy = lazy(async () => {
*/
function writeOsc52(text: string): void {
if (!process.stdout.isTTY) return

const base64 = Buffer.from(text).toString("base64")
const osc52 = `\x1b]52;c;${base64}\x07`
const passthrough = process.env["TMUX"] || process.env["STY"]
const sequence = passthrough ? `\x1bPtmux;\x1b${osc52}\x1b\\` : osc52
let sequence = osc52

if (process.env["TMUX"]) {
// tmux requires OSC52 to be wrapped in its DCS passthrough format.
sequence = `\x1bPtmux;\x1b${osc52}\x1b\\`
} else if (process.env["STY"]) {
// GNU screen requires a different DCS passthrough wrapper, and its
// small passthrough size limit requires chunking for longer payloads.
// Using 700 byte chunks to stay below observed 800 byte limit.
const chunkSize = 700
sequence = `\x1bP\x1b]52;c;`

for (let i = 0; i < base64.length; i += chunkSize) {
if (i > 0) sequence += `\x1b\\\x1bP`
sequence += base64.slice(i, i + chunkSize)
}

sequence += `\x07\x1b\\`
}

process.stdout.write(sequence)
}

Expand Down
Loading