Vouch request: add a keybind action to open a new tab running a command

[jamesarch]

What do you want to change?

• a new keybind action: new_tab_with_command:
• opens a new tab that runs the given command instead of the default shell
• reuses the existing surface command plumbing → small change, with a parse test
• macOS implemented; GTK falls back to a plain new tab for now

Why do you want to make this change?

This is one of the few things I still miss from iTerm2.

I spend most of my day hopping between servers, and I’d love to have shortcuts like:

• ⌘⇧1 → open a tab and SSH into staging
• ⌘⇧2 → open a tab and SSH into production
• ⌘⇧3 → open a tab and SSH into a jump host

Right now I can create a new tab from a keybind, but I can’t tell that tab to run a command. The only alternative is using global startup commands or shell workarounds, neither of which feels quite right.

A “new tab and run command” action would be incredibly useful for anyone managing multiple servers.

I acknowledge that:

• I have read the Contributing Guide and understand the contribution process.
• I have read and agree to follow the AI Usage Policy.
• I wrote this vouch request myself, in my own voice, without AI generating it.

[jcollie]

!vouch

[jcollie]

You should probably open a feature discussion. In particular what about similar commands for new windows and new splits? Should they be part of a single parameterized action or should there be separate actions?

[jamesarch]

Thanks for the vouch! Opened a feature discussion for the design question: #12985. PR for the tab-only version is up at #12984.