[FEATURE] Layout formatter for non-git directories

[lucasqueiroz]

Is your feature request related to a problem? Please describe.
It would be nice to have a "default" return from the command in case the directory passed as argument is not a git dir.
Currently, it returns an empty string, but I would like to be able to customize this to return a specific string when the directory isn't a git dir.

Describe the solution you'd like
An option in the config file to have a formatter for this. Maybe add an option to the layout list, or have it be separated and empty as default?

Describe alternatives you've considered
Sedding with a default value, but I couldn't get tmux to work the the | sed ..., so it doesn't help.

Additional context
Honestly, I'm using this with catppuccin and when the dir is not a repo, it looks very ugly, so I wanted to have a default to be placed.

[arl]

It looks like that something that could be handled from tmux configuration rather than in gitmux.

The fact that gitmux returns an empty string when outside a git dir should help, as you hinted the issue description.

What did you try, and what didn't work?

I'd expect something like the following to work. Create a script, put it into your PATH, and call that script instead of calling gitmux directly from your tmux.conf:

output="$(gitmux)"

if [[ -n $output ]]
then
    printf "$output"
else
    printf "not git dir"
fi

Note that I haven't tried it though