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I am starting to run up against the limits of XKB, the keyboard subsystem of the X window system.

I would like to know if there is a way I can gain more flexibility. Here are examples of the kind of freedom I would like to obtain:

  • When pressing CapsLock+w, generate Ctrl+Right.
  • When pressing f d in rapid succession (but not slowly), generate Escape.
  • When pressing Ctrl+Space, generate 4 spaces.

What are some ways I could obtain this? Is there a replacement for XKB? Should I simply modify XKB itself? Is there a way to get closer to full programmatic control of the keyboard behavior?

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I hope those are just examples and not actual use cases... But if they are, I can't help but be curious. – Suchipi Aug 4 '13 at 16:52

Employ an extensible input method framework such as scim or ibus. The last one is possible out of the box by configuring the m17n backend, but I suspect the first two require you to program your input method.

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Ah I had been wondering if an input method framework might get me there but I had been utterly at a loss where to begin. Do you know any references or examples to start with for my kind of unusual goals? Also, which do you recommend -- scim or ibus? – Owen Aug 5 '13 at 3:29
    
Join the IME mailing list for your distro: opensuse-m17n, Debian pkg-ime-devel etc. – daxim Aug 5 '13 at 6:06

I think it's relatively simple to accomplish some of what you want with Autokey.

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