CODEWITHSUNDEEP
macosemacsiterm2
joker512
joker512

Reputation: 53

Process "emacs" alt-shift combinations in Iterm2 on Mac OS

I tried many manuals how to deal with alt key in emacs in iTerm, but no of them helped me. The problem is that all suggestions work for alt key, but not for combination of alt+shift.

What do I want:

(global-set-key (kbd "M-S-<left>") 'shrink-window-horizontally)
(global-set-key (kbd "M-S-<right>") 'enlarge-window-horizontally)
(global-set-key (kbd "M-S-<down>") 'shrink-window
(global-set-key (kbd "M-S-<up>") 'enlarge-window)

So, alt+shift+arrow must change the window size. I can easily support this for alt+arrow using this manual:

https://azaleasays.com/2013/07/05/setting-up-mac-os-x-and-iterm2-for-emacs/.

But all this doesn't work for alt+shift.

Also I tried these suggestions. It doesn't work in this particular case:

Making iTerm to translate 'meta-key' in the same way as in other OSes

I don't think it's important, but for pure picture I connect via SSH to instance and work under tmux.

Did anybody try to do this?

Upvotes: 2

Views: 467

Answers (1)

joker512
joker512

Reputation: 53

Okay, I mostly fixed it. The main problem is that I couldn't find any description of how to correctly write "Key Mappings" for Iterm2 (googled a lot). After some attempts I could somehow resolve this as a puzzle, but it's really strange to do it like this not having any good documentation. If somebody has a link, please share it.

For people who potentially have this problem I'll write what I could find:

  1. Find the actual code of the key using "showkey -a" command. It usually has 2 values, let's name them X and Y. In this case the code "1A" (arrow up) would have X = 1, Y = A.
  2. Use the following list as reference. I found the codes only by entering numbers and check. No documentation found on this. You can try another numbers if you need another key combinations:
  • SHIFT – 2
  • ALT – 3
  • ALT+SHIFT – 4
  • CTRL – 5
  • CTRL+SHIFT – 6
  • CTRL+ALT – 7
  1. Let's name the previous value with variable Z.
  2. The format for the "Key Mappings" is "[X;ZY" in this case. So, we split the source code to 2 parts, put "[" before and ";Z" inside.

So, CTRL+SHIFT+"Arrow up" would be "[1;6A".

It's not full though. For example, I couldn't understand how to code letters with ALT. For example, CTRL+ALT+z. If somebody knows, please comment also.

Upvotes: 1

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