When comparing files under 2 folder, I normally select 2 files, then use
:!vim -d %f %F %s
To open vimdiff to compare selected files' content, this is very helpful.
One thing I want to tweak is: is it possible to pass the width or height for the new split multiplexer window ? I know tmux has this capability, not sure if I can specify that config through %s or %v command macro.
No macros for that, but you can do that explicitly:
:!tmux resize-pane -y 10 && vim -d %b %s
This works well, thanks!