only copy a maximum of 57 characters in tmux

[zachcheung]

$ pbpaste | wc -c
7
$ shcopy 'To use shcopy within a tmux session, make sure that the outer terminal supports OSC 52, and use one of the following options'
$ pbpaste | wc -c
57

$ tmux -V
tmux 3.3a
$ cat ~/.tmux.conf
set -s set-clipboard on
$ shcopy -v
shcopy version v0.1.3 (3e1e573)

[zachcheung]

# not in tmux
$ echo $TERM
xterm-256color
# in tmux
$ echo $TERM
screen-256color

# screen in tmux
$ echo $TERM
screen
$ pbpaste | wc -c
6
$ shcopy 'To use shcopy within a tmux session, make sure that the outer terminal supports OSC 52, and use one of the following options'
$ pbpaste | wc -c
124

OS: macOS 10.15.7

Set the default terminal for new windows created in this session - the default value of the TERM environment variable. For tmux to work correctly, this must be set to ‘screen’, ‘tmux’ or a derivative of them.

https://man.openbsd.org/OpenBSD-current/man1/tmux.1#default-terminal

In tmux, it's quite normal for TERM to be set as screen or a screen derivative. Until macOS 14, macOS supports tmux-256color by default. Therefore, I think solely relying on TERM containing screen to determine the sequence may not be appropriate.

https://gpanders.com/blog/the-definitive-guide-to-using-tmux-256color-on-macos/