 Tip #327: key mappings
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| created: |
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September 13, 2002 17:57 |
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complexity: |
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basic |
| author: |
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Nithin |
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as of Vim: |
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6.0 |
I use my left thumb for the alt key and right for the space. Using this combo, you can get
some useful key maps for which you don't have to move your hands. I find I have to turn
my hand a little to press the left ctrl key.
These are some maps i use for C programming.
map ' `
map <C-f> :w<C-m>:!make<C-m>
map <M-]> <C-]> Tags
map <M-[> <C-t> Tags
map <M-u> :!ctags -R *<C-m> Build Tags
map <M-c> I/*<Esc>A*/<Esc> Comment current line
map <M-d> ^xx$xx Delete comment for a single line
map <M-l> [{zf% Fold upto the enclosing brace level
map <M-o> zo open fold
map <M-i> zc close fold
map <M-.> :cn<C-m> Go to next error in list
map <M-,> :cp<C-m> previous error in list
imap <Tab> <C-p> Complete word
inoremap <S-Tab> <Tab> Tab
inoremap { <CR>{<CR> Brace and line
inoremap } <CR>} brace and line. saves one enter stroke
imap <M-j> <Esc> Escape. Don't want to move my hand to esc key.
imap <M-k> <C-y> Copy line from above.
imap <M-q> /* */<Esc>hhi Comment selected lines
noremap <M-r> ddko{<C-m>}<Esc>kpko Convert a simple statement to a compound statement. And place cursor above prev line.
noremap <M-k> ddko{<C-m>}<Esc>kpo Same as above but place cursor below old line.
vnoremap <M-j> <Esc>
vnoremap <M-c> di/*<C-m>/<C-m><Esc>kkp Commented selected text
nmap <M-n> :noh<CR> No hilight
Bye,
Nithin.
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Additional Notes
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[email protected],
September 20, 2002 1:57
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Hello Nithin,
I was baffled to read that you are attempting to reduce your hand movements to the minimum [with these key mappings] while you are typing. Surely you know that this makes you a very good candidate for RSI (Repetitive Strain Injury). Experts recommend that the hands "float" over the keyboard, with the fingers as straight as possible -- instead of curled -- and using full arm movements --instead of finger and wrist contortions. This supposedly helps your arms and hands maintain a natural orientation.
As a professional, I am very concerned with these issues and I try to follow preventive measures against RSI as much as possible. I recommend others to do the same. Nevertheless, your tip was a good start for me to learn about key mappings.
Regards,
Eddy Young
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rumcho at yahoo dot com,
June 25, 2003 14:36
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| Why are you baffled about? Vim is about fast and efficient writing, if you move your hands around in order to reach keys that's slowing you down. I don't deny the possiblity of developing some health condition but that's something the user has to make special "accomodations" about and it is not the goal of vim.
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[email protected],
December 10, 2003 16:59
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Why remap so many keys just because you have to turn your hand for Ctrl?
Remap Ctrl key instead. I do that on every system I use.
On any modern UNIX that uses X do:
setxkbmap -option ctrl:swapcaps
and your CapsLock key will become Ctrl, while Ctrl will become CapsLock,
just like on good old Sun keyboards. That position is right next to the pinky finger, and feels really naturally. Considering that Bill Joy wrote vi and founded Sun, it's not a surprise that Sun keyboards were so ideally suited to vi. :-)
On older UNIX systems store this in a file:
!
! Swap Caps_Lock and Control_L
!
remove Lock = Caps_Lock
remove Control = Control_L
keysym Control_L = Caps_Lock
keysym Caps_Lock = Control_L
add Lock = Caps_Lock
add Control = Control_L
and execute that file with
xmodmap filename
Probably the best thing is to put one of these commands in .xsession or equivalent file.
Red Hat Linux and Fedora will execute by default .Xkbmap and .Xmodmap. In such a case it is enough to put xmodmap commands in .Xmodmap file, and only -option ctrl:swapcaps in .Xkbmap.
Of course you need only one of these two files.
In fact, I doubt that you'll do it, since you are already used to your mappings.
But I do not recommend your tip to anybody else. I have put this detailed description here for
other people who are frustrated with the position of Ctrl key, yet do not know how to change it.
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[email protected],
December 14, 2003 12:35
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These mappings are brilliant mate!
As for "risk of RSI" ... I think anything that makes typing more comfortable LESSENS the risk of RSI.
Cheers!
Ethan
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[email protected],
August 23, 2004 16:30
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I agree with the poster of the first additional comment; it may be because I'm a self-taught typist (I use all fingers of my right hand and one ot two of my right hand, and I let my hands "float" more or less freely over the keyboard) or because I learnt piano before I learnt Vim (no serious or even half-serious pianist will try to use the whole keyboard with no hand movement) :-).
-- If the Ctrl key is too far away for your thumb, try using your little finger.
Regards,
Tony.
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