Send ⌘ key to Vim

[kuntau]

How do I send ⌘ key to Vim running in wezterm.

For example ⌘+s to save

[wez]

Only Ctrl, Alt and Shift modifiers have a defined encoding for the terminal.
If you wanted to, you could set up a key assignment (using https://wezfurlong.org/wezterm/config/lua/keyassignment/SendKey.html) that makes CMD-S send Ctrl-S and then you could set up vim to recognize that and trigger a save.

[kuntau]

Thank you for the answer @wez. I'm wondering, we live in 2022 why the terminal still act like it's in 80s. Can't we shake things up and make proper modern terminal. AFAIK, we also can't send combination of Ctrl + Shift + Alt etc to whatever we're running on.

[wez]

The issue is in getting everything to agree on what those key presses are encoded as.

There are a couple of attempts at defining keyboard encodings:

• https://sw.kovidgoyal.net/kitty/keyboard-protocol/
• http://www.leonerd.org.uk/hacks/fixterms/

but they need the applications that you run inside the terminal to detect and/or request that those encodings be used.
There isn't widespread support for either of those schemes at this time, because most terminal programs make use of
curses based text interfaces that have no concept of additional modifiers.