A way to get the currently selected tab index

Description of the new feature

The action focus-tab with --target takes a tab index to switch to.
But since one does not know which tab is selected or how many are present, this is only useful when one is creating ALL the tabs in a window manually.

If one knows the current tab index OR have a way to specify this instead of an index to --target the feature would be more useful.

For example, one could spawn a tab with a long running command in the background.

Currently i have resorted to using ReadProcessMemory on a running WindowsTerminal to get at the index, not exactly ideal ;)

Proposed technical implementation details

Either --target prev for selecting previously selected tab, or an action for wt which only prints the current tab index wt selected-tab.

Background spawn examples:
wt -w last new-tab "long-running-command" \; focus-tab -t prev
OR
wt -w last new-tab "long-running-command" \; focus-tab -t $(wt selected-tab)

[lhecker]

It seems like what you're trying to achieve is "spawn a new tab in the background", right? So, would having a --background flag or similar be a decent alternative?

The background tab was just an example of use really, though it is something i miss from my years of using ConEmu.
It would be similar to focus-tab --target prev in that case, but i think actually knowing the currently selected index is more general and could be useful for other cases i havent thought of yet.

But yes, if its between nothing and --background il take it 😉

[bitingsock]

I have need of such a feature. I would propose a more general info printout
wt tab-info [optional index]
would output all tabs with their titles, indexes, and ideally the PID of the process they are hosting.
As there is seemingly no way of getting info about tabs the focus-tab by index command borders on useless, imo