====== Vim Tips ======
===== Frequently Asked Questions =====
** How do I change the file format of a file in Vim? **
:set ff=dos|unix
** How do I put Vim in HEX mode **
:%!xxd
:%!xxd -r
** How to quickly switch to/from HEX editing mode? **
Add the following to your .vimrc, and map to the key of your choice to allow toggeling:
nnoremap :Hexmode
inoremap :Hexmode
vnoremap :Hexmode
" ex command for toggling hex mode - define mapping if desired
command -bar Hexmode call ToggleHex()
" helper function to toggle hex mode
function ToggleHex()
" hex mode should be considered a read-only operation
" save values for modified and read-only for restoration later,
" and clear the read-only flag for now
let l:modified=&mod
let l:oldreadonly=&readonly
let &readonly=0
let l:oldmodifiable=&modifiable
let &modifiable=1
if !exists("b:editHex") || !b:editHex
" save old options
let b:oldft=&ft
let b:oldbin=&bin
" set new options
setlocal binary " make sure it overrides any textwidth, etc.
let &ft="xxd"
" set status
let b:editHex=1
" switch to hex editor
%!xxd
else
" restore old options
let &ft=b:oldft
if !b:oldbin
setlocal nobinary
endif
" set status
let b:editHex=0
" return to normal editing
%!xxd -r
endif
" restore values for modified and read only state
let &mod=l:modified
let &readonly=l:oldreadonly
let &modifiable=l:oldmodifiable
endfunction
** Useful settings when editing readonly large files in Vim? **
set undolevels=-1
set nomodifiable
set readonly
set noswapfile
set bufhidden=unload
set buftype=nowrite
** How do I remove all duplicated lines from a text file in VIM? **
:g/\(^.*$\)\_.*\1/d
or
1G
!Gsort
1G
!Guniq
** How do I set up auto indenting space-filled tabs in VIM? **
Add the following to your configuration:
set tabstop=4
set shiftwidth=4
set expandtab
set smartindent
===== Sample .vimrc =====
set nobackup
set tabstop=3
set smartindent
set autoindent
colorscheme desert
set cindent
set expandtab
set shiftwidth=3
set incsearch
highlight String ctermfg=darkcyan
highlight Comment cterm=bold ctermfg=magenta
highlight Constant ctermfg=3
highlight Search ctermfg=white ctermbg=blue
highlight SpecialKey ctermfg=1
nnoremap :noh
map :set number!
map :set wrap!
nnoremap :Hexmode
inoremap :Hexmode
vnoremap :Hexmode
" ex command for toggling hex mode - define mapping if desired
command -bar Hexmode call ToggleHex()
" helper function to toggle hex mode
function ToggleHex()
" hex mode should be considered a read-only operation
" save values for modified and read-only for restoration later,
" and clear the read-only flag for now
let l:modified=&mod
let l:oldreadonly=&readonly
let &readonly=0
let l:oldmodifiable=&modifiable
let &modifiable=1
if !exists("b:editHex") || !b:editHex
" save old options
let b:oldft=&ft
let b:oldbin=&bin
" set new options
setlocal binary " make sure it overrides any textwidth, etc.
let &ft="xxd"
" set status
let b:editHex=1
" switch to hex editor
%!xxd
else
" restore old options
let &ft=b:oldft
if !b:oldbin
setlocal nobinary
endif
" set status
let b:editHex=0
" return to normal editing
%!xxd -r
endif
" restore values for modified and read only state
let &mod=l:modified
let &readonly=l:oldreadonly
let &modifiable=l:oldmodifiable
endfunction