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Resumen: Rename one of the "Discussion" sections; it wasn't so much discussion as a warning. Also fix some formatting, and update the whdc links to URLs that are just recent enough to forward to the opaque MSDN urls.
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< ==Discussion==
< Beware of some PS/2 to USB adapters. The two I've used so far don't send repeat events for the Caps Lock key to the OS keyboard driver, i.e. if you want to type C-x C-f you have to release the Caps Lock key after hitting C-x and press it again for C-f (tested on windows xp and Debian).
a
> ==Warning about PS/2 -> USB adapters==
> Beware of some PS/2 to USB adapters. The two I've used so far don't send repeat events for the Caps Lock key to the OS keyboard driver, i.e. if you want to type C-x C-f you have to release the Caps Lock key after hitting C-x and press it again for C-f (tested on Windows XP and Debian).
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< (define-key key-translation-map [8711] 'event-apply-hyper-modifier)
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> (define-key key-translation-map [8711] 'event-apply-hyper-modifier)
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< * http://www.microsoft.com/whdc/device/input/w2kscan-map.mspx and
< * http://www.microsoft.com/whdc/device/input/Scancode.mspx
a
> * http://www.microsoft.com/whdc/archive/w2kscan-map.mspx and
> * http://www.microsoft.com/whdc/archive/Scancode.mspx
Añadido:
> [new:SamuelBronson:2012-02-04 20:43 UTC]
> I fixed the links, so they're not dead anymore. (But you can still try AutoHotKey.)
This page is about the keyboard key typically labeled CapsLock. It covers different ways to use the key, including changing its behavior.
Should we move all CTRL key hints to MovingTheCtrlKey to avoid duplicate code (text) that may become obsolete and/or out-of-sync?
Beware of some PS/2 to USB adapters. The two I’ve used so far don’t send repeat events for the Caps Lock key to the OS keyboard driver, i.e. if you want to type C-x C-f you have to release the Caps Lock key after hitting C-x and press it again for C-f (tested on Windows XP and Debian).
MeatBall:HumaneInterface says that the CapsLock key is useless, and that an UNDO key would be better. Here’s how.
In ~/.Xmodmap, remove the Lock modifier bit from the Caps_Lock key, and make it the Undo/Redo key
! No Caps Lock remove Lock = Caps_Lock keysym Caps_Lock = Undo Redo
Emacs binds the Undo/Redo keys automatically.
I’m curious, why is the Caps Lock key useless? - MathiasDahl
It introduces a mode, and thus mode errors by users. – AlexSchroeder
I’m not sold on the “modes are bad” argument. I came to this page specifically because I want to redefine my Caps Lock (or perhaps Shift+Caps Lock) to be a Shift Lock (like a typewriter). Anyone know if there’s a way to do that (like emacs’ scroll-lock-mode)? – Sinewalker
In my opinion (and this is a religious issue), Caps should always be Ctrl, and left control could be the CapsKey. I prefer removing Caps Lock altogether. The additional benefit of having Caps acting like Ctrl is that Ctrl gets a more central position on the keyboard. Which, in Emacs, is quite useful considering ones frequent use of Ctrl commands.
! ! Swap Caps_Lock and Control_L ! remove Lock = Caps_Lock remove Control = Control_L ! Don't swap, forget it. !keysym Control_L = Caps_Lock keysym Caps_Lock = Control_L !add Lock = Caps_Lock add Control = Control_L
or, from a term, setxkbmap -option “ctrl:nocaps” for a temporary solution. Put in .xinit to make it permanent.
This could of course be extended with the above Undo Redo command(s) being attached to Control_L. For more information on how to reorganize the keyboard in X-Window, see xmodmap(1x) or the wiki page MovingTheCtrlKey. – JoachimNilsson
Another alternative is to map CapsKey to BackSpace?, like in the LispMachine, and BackSpace? to Undo/Redo.
It’s useful to map the CapsKey to dabbrev-expand, for automatic completion/expansion. Here’s how:
In ~/.Xmodmap, remap the Caps_Lock key to some suitable key:
! Caps Lock -> Nabla keycode 66 = nabla
Then in your ~/.emacs:
;; Seems emacs23 doesn't understand nabla
(when (equal "23" (substring emacs-version 0 2))
(global-set-key '[8711] 'dabbrev-expand))More modifiers are always good :-)
In ~/.Xmodmap, remap the Caps_Lock key to some suitable key:
! Caps Lock -> Nabla keycode 66 = nabla
If you add this to your .emacs you will get an Hyper key in gtk and in an xterm!
(define-key key-translation-map [8711] 'event-apply-hyper-modifier)
Is it possible to remap, or at least get Emacs to grok, the Caps Lock key to Undo / Redo as described above?
Instructions are here for NT platforms above 2k:
MovingTheCtrlKey has an example.
The links are dead, but you can use AutoHotkey.
I fixed the links, so they’re not dead anymore. (But you can still try AutoHotKey.)
I remap Caps Lock to Super. This enables me to create very comfortable and intuitive key bindings without interfering with the standard Emacs bindings. See example on my wiki home page (JonasOster).