Question

3

How to correctly get RIGHT KEYSEQ for readline in .inputrc?

rated 0 times [ 3] [ 0] / answers: 1 / hits: 1324 / 1 Year ago, mon, december 26, 2022, 4:33:38

What I struggle with:

I'm configuring ~/.inputrc file to be same as mine custom emacs key-bindings and I'm struggling very much with readline's key sequences.

What I mean by that is that if I want to set <up> / <down>, I have to set it to "e[A" / "e[B"

How can I infer keyseq for <F1>..<F12> or even if I want to bind something to let's say (kbd "C-x <M-f7>") in emacs terminology (ie: to [control]+[x] [alt]+[f7] be one keyseq)?

What I want:

Is there any command that tells me for certain key on keyboard what its escape sequence? If there isn't any command, is there any other resource (article/table/...) with some hints?

--> goal: replace <KEY SEQUENCE> with proper keyseq



"<f3>"           : start-kbd-macro

"<S-f4>"         : end-kbd-macro

"C-x <C-M-S-f4>" : dump-macro

"<f4>"           : call-last-kbd-macro

... more keybindings ...

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aradxalte

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Location: Dominica

Member since Sat, Nov 5, 2022

2 Years ago

answered 1 Year ago fishutt · Accepted Answer

I found solution: use emacs -nw and function insert-quoted (default bind to Ctrl+q).

Ctrl+q ↑ will result in ^[[A

Ctrl+q F1 in ^[[[A

Lines in ~/.inputrc will then be following (results may vary depending on environment - mostly $TERM variable):

"e[[A": "pressed up key"

"e[[[A": "pressed F1"

Motivation to change your .inputrc can be following.

Don't you like emacs-like keys for navigating along line and history?

I don't and I prefer ErgoEmacs key bindings because they are logical and I want to use them not only in Emacs but system wide.

"ej": backward-char

"el": forward-char

"ei": previous-history

"ek": next-history

"eh": beginning-of-line

"eH": end-of-line

"eu": backward-word

"eo": forward-word

"eg": kill-line

"eG": backward-kill-line

"ee": backward-kill-word

"er": kill-word

"ed": backward-delete-char

"ef": delete-char

"ez": undo

"ex": kill-region

"ec": copy-region-as-kill

"ev": yank

"e;": forward-search-history

"e:": reverse-search-history

I have written "sudo aptitude install" so many times (usually after fresh install) that I have M-a M-i (ie Alt+a Alt+i) as shortcut for that (because alias to same thing don't autocomplete)

"eaei": "sudo aptitude install "

There are plenty other reasons why you should have your own ~/.inputrc ...