How can I send URLs from tmux to my browse with urlscan?

I would think the following snippet in my tmux.conf would work:

bind-key C-u run-shell "tmux capture-pane -Jp | urlscan -d"

But all I get with <prefix> C-u is:

'tmux capture-pane -Jp | urlscan -d' returned 1

Solution

According to tmux manual:

run-shell [ -bC] [-d delay] [ -t target-pane] [shell-command]
( alias: run )

Execute shell-command using /bin/sh or (with -C) a tmux command in the background without creating a window. [...]

Since urlscan requires a tty to work properly it does not work when it is run in the background.

I guess this is what you want:

bind-key C-u run "tmux popup -E -b double -w 100% -h 100% \
                  sh -c 'tmux capture-pane -Jp | urlscan -d' "