Copypaste doesn't work properly

[mankeli]

Description

Original issue: Copy-on-Select fails when running opencode via Tmux in Kitty terminal (Linux) #9942

this is rather annoying. I understand that fullscreen TUI interface requires to have it's custom copypaste routine, but it would be nice if it would work. Claude code (fullscreen mode) works properly on tmux. it says " copied 784 chars to tmux buffer · paste with prefix + ]" on the interface but it also gets copied to the system clipboard.

Plugins

No response

OpenCode version

1.17.18

Steps to reproduce

1. have opencode open in tmux which is in terminal (ghostty here)
2. select area with mouse
3. copy, see message "Copied to Clipboard"
4. paste via terminal, observe how nothing was copied to clipboard. paste via tmux key shortcut, it also had old contents

Screenshot and/or share link

No response

Operating System

No response

Terminal

No response

[github-actions]

This issue might be a duplicate of existing issues. Please check:

• Copy-on-Select fails when running opencode via Tmux in Kitty terminal (Linux) #9942: Copy-on-Select fails when running opencode via Tmux in Kitty terminal (Linux) — you already referenced this one; it may cover the same problem
• OSC 52 clipboard copy doesn't work in tmux when allow-passthrough is off #19982: OSC 52 clipboard copy doesn't work in tmux when allow-passthrough is off — same root cause (OSC 52 passthrough in tmux)
• Clipboard copy not working over SSH + tmux in Ghostty #15907: Clipboard copy not working over SSH + tmux in Ghostty — similar tmux clipboard issue
• Copy To Clipboard is not working #4283: Copy To Clipboard is not working — general clipboard copy failure

If your issue is already tracked in one of the above, please consider adding a comment there instead so the discussion stays consolidated.

[mankeli]

this seems to fix it on tmux though,
set -g allow-passthrough on

I guess it could be a feature request then? Atleast it's not a bug, unless tmux support is intended feature.

[mankeli]

Good refs, probably that #19982 atleast

[ayubun]

i believe this would also be fixed by #30472