Feature request: toggle VtrFocusRunner

[jdsutherland]

My current TDD workflow (using vim-test with vim-tmux-runner integration) is the following:

• run test (vim map)
• VtrFocusRunner (vim map)
• last-pane (via tmux bind)

It'd be nice to unify the focus/unfocus to a single mapping.

Would it be possible to make VtrFocusRunner a toggle so that it doesn't require separate mappings to zoom/unzoom the runner?

Maybe a better solution would be to a write a function that does all 3 (I really should learn vimscript).

Thoughts?

[christoomey]

Hi @jdsutherland. It is certainly possible to write a mapping to handle this, although it needs to be a bit smart about whether it is talking to tmux or vim. Lucking, we can borrow from vim-tmux-navigator to make it work.

Assuming you wanted to use C-\ as your key sequence to toggle the focus, you could add the following to your ~/.tmux.conf:

is_vim="ps -o state= -o comm= -t '#{pane_tty}' \
    | grep -iqE '^[^TXZ ]+ +(\\S+\\/)?g?(view|n?vim?x?)(diff)?$'"
bind-key -n C-\ if-shell "$is_vim" "send-keys :VtrFocusRunner C-m" "select-pane -l"

A couple of fun details in there:

1. I've included the magic is_vim shell command which allows tmux to detect vim and dispatch the correct command
2. We use if-shell to check if vim or tmux, then if in vim, we send :VtrFocusRunner
3. We need to include C-m at the end of the send keys as that is how tmux treats enter.

That said, while the above should work for you, I'd caution that using up a top level key binding like this is consuming a precious resource, and I'd consider not doing that.

Just for clarity, for me, the sequence goes as follows:

• In vim: run the current spec with <leader>t
• If the spec fails and I want to inspect, run <leader>fr (mapped to :VtrFocusRunner)
• In terminal: Inspect the failure summary
• Use C-\ hotkey from vim-tmux-navigator to unzoom and return to vim pane.

I'm going to close this now as I think the above should be enough info to get you going, but please feel free to reach out or reopen if needed.