Editing Handle common command typos

{{TipImported
|id=22
|previous=21
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|created=February 27, 2001
|complexity=basic
|author=glennj
|version=5.7
|rating=34/17
|category1=Usage
|category2=
}}
Since Vim uses nearly the entire keyboard to do different things depending on the mode it is in, simple typos can have much bigger effects than in most other editors. A one-letter difference can make Vim do something entirely different than what you intended. While it is normally easy enough to just [[Undo and redo|undo]] the mistake, it can be better to avoid the mistake entirely.

==Normal and insert modes==
If you find yourself making a typo very frequently in a normal-mode command, and accidentally enter a command you almost never use, it is very easy to correct.

For example, if in insert mode you often miss the <Esc> key and hit <F1> instead, you can map <F1> to either a "do nothing" command, or to the intended <Esc> command:

<pre>
inoremap <F1> <Nop>
</pre>

<pre>
inoremap <F1> <ESC>
</pre>

If in visual or normal mode you accidentally hold down the &lt;Shift> key while pressing the <Down> arrow, and you only intend to press <Down> and not &lt;S-Down>:

<pre>
" visual mode
vnoremap <S-Up> <Up>
vnoremap <S-Down> <Down>
" normal mode
nnoremap <S-Up> <Up>
nnoremap <S-Down> <Down>
</pre>

This might occur often in practice if you use linewise-visual mode by pressing V, and then hold the <Shift> key too long.

It is worth noting that S-Up and S-Down are often unavailable on terminals. I would expand on these mappings like this:

<pre>
nnoremap <S-up> V
nnoremap <S-left> v
nnoremap <S-down> V
nnoremap <S-right> v
xnoremap <S-up> k
xnoremap <S-left> h
xnoremap <S-down> j
xnoremap <S-right> l
snoremap <S-up> <up>
snoremap <S-left> <left>
snoremap <S-down> <down>
snoremap <S-right> <right>
onoremap <S-up> k
onoremap <S-left> h
onoremap <S-down> j
onoremap <S-right> l
inoremap <S-up> <ESC>gH
inoremap <S-left> <ESC>gh
inoremap <S-down> <ESC>gH
inoremap <S-right> <ESC>gh
</pre>

==Command-line mode==
Use cabbrev to correct command typos that you commonly make.

For example, if you tend to hold the shift key too long:

<pre>
cabbrev Q quit
cabbrev W write
</pre>

or, if you tend to miss the "!" and hit the "@" as well:

<pre>
cabbrev q!@ q!
cabbrev wq!@ wq!
</pre>

If you ever find that you actually need to type one of the typos you make, you'll need to [[Disabling cabbrev|disable cabbrev]] temporarily.

Most typos of the types shown above usually happen when entering a single, quick command like <tt>:w</tt>. It might be a good idea to use a [[Replace a builtin command using cabbrev|cabbrev that only triggers in the first column]] of the command line.

==Comments==
ja lubię

<pre>
noremap J j
noremap <Leader>J J
noremap K k
</pre>