Add left status bar

[gegoune]

Is your feature request related to a problem? Please describe.
I would like to be able to format status bar in its entirety, not only right hand side with set_right_status.

Describe the solution you'd like
Replace set-right-status in favour of more generic status bar generator. I have something similar to vim's statusline in mind where one can influence generation of entire bar.

I can think of situation where current left hand side, tabs bar, is returned by builtin function and together with some control characters for aligning content, placed as per user's desire.

wezterm.on('update-status-bar', function(window, _)
  window:set_status_bar(
    wezterm.format { { Text = '[' .. window:active_workspace() .. ']' .. '<center from here>' ..window.tabwidget .. '<right align from here>' .. wezterm.strftime '%Y-%m-%d %H:%M '  } }
  )
end)

Describe alternatives you've considered
Leave things as they are, I am not sure if added complexity is worth it. tmux does have such flexibility though.

I am not sure about rate of refreshing the entire bar.

Additional context
As you mention on discussions' topic and I agree, this is rather low priority. I can definitely live with current degree of configurability here. Just putting it here as a food for thought, maybe someone (or yourself) can come up with sensical and better interface than one above.

(Loving wezterm, amazing job! Thanks a lot!)

[wez]

I don't want to make the whole tab bar get parsed out of text; there are more structured ways to tackle that.
I'd prefer to interpret this issue as a request for a set_left_status_bar to mirror the current right status bar.
In my mind, the left status bar is a bit simpler than the right status bar, as it can unconditionally occupy the left space before the tabs are rendered. (The right bar has some math gymnastics to right align and truncate/hide behind other text).

[gegoune]

Feel free to completely scrap that issue, it's not that important at all.

[Lenbok]

A left-status-bar would be great. I would personally use it to show the workspace name (at the moment I have it on the right in wezterm, but I conceptually think it belongs closer to the tabs).

[wez]

This should be fixed now in main.

It typically takes about an hour before fixes are available as nightly builds for all platforms. Linux builds are the fastest to build and are often available within about 20 minutes. Windows and macOS builds take a bit longer.

Please take a few moments to try out the fix and let me know how that works out. You can find the nightly downloads for your system in the wezterm installation docs.

If you prefer to use packages provided by your distribution or package manager of choice and don't want to replace that with a nightly download, keep in mind that you can download portable packages (eg: a .dmg file on macOS, a .zip file on Windows and an .AppImage file on Linux) that can be run without permanently installing or replacing an existing package, and can then simply be deleted once you no longer need them.

If you are eager and can build from source then you may be able to try this out more quickly.

[Lenbok]

@wez Just to check in here, there is a update_right_status event but no update_left_status event. Are you envisioning that we would typically call both set_left_status and set_right_status from a function hooked into update_right_status? Or do you have a recommendation of where else to hook it?

[wez]

Ah, the update-right-status event is triggered whenever the status line needs to be updated, regardless of whether it is left or right.

[gegoune]

Thanks for adding it! Perhaps update-right-status could be aliased by update-status event with former getting removed with some deprecation notice and period?

[github-actions]

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