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- | ====== VIM ====== | ||
- | There's an old joke that Emacs would be a great operating system if only it had a decent text editor,\\ | ||
- | whereas vi would be a great text editor if only it had a decent operating system. | ||
- | |||
- | ==== File Cleaning ==== | ||
- | |||
- | === Remove Blank line from the file === | ||
- | |||
- | to remove blank lines please use following. | ||
- | <code bash> | ||
- | :g/^$/d | ||
- | </code> | ||
- | OR | ||
- | <code bash> | ||
- | :g/^ *$/d | ||
- | </code> | ||
- | |||
- | === Remove Tailing space as well space at beginning using VI === | ||
- | |||
- | To remove tailing space | ||
- | <code bash> | ||
- | :%s/\s\+$// | ||
- | </code> | ||
- | |||
- | To remove space at beginning | ||
- | <code bash> | ||
- | :%s/^\s\+// | ||
- | </code> | ||
- | |||
- | === Replace tab with space === | ||
- | |||
- | To replace tab with space you need to use | ||
- | <code bash> | ||
- | :%s/[CTRL-i]/ /g | ||
- | </code> | ||
- | |||
- | === Delete Line start with === | ||
- | |||
- | To delete lines start with some word e.g. Redirect | ||
- | <code bash> | ||
- | :g/^Redirect/d | ||
- | </code> | ||
- | |||
- | ==== Convert all character to lower OR upper case ==== | ||
- | NOTE : This will apply to whole file as we are using (%)\\ | ||
- | To convert upper case use following | ||
- | <code bash> | ||
- | :%s/\([a-z]\)/\u\1/g | ||
- | </code> | ||
- | To convert lower case use following | ||
- | <code bash> | ||
- | :%s/\([A-Z]\)/\l\1/g | ||
- | </code> | ||
- | |||
- | ==== Match Start of line Append End of line ==== | ||
- | |||
- | To Match Start of line and append that line use following\\ | ||
- | (search Append end of line) | ||
- | <code bash> | ||
- | %g/^DocumentRoot/s/$/\/www/ | ||
- | </code> | ||
- | |||
- | Which append "/www" if start of line is "DocumentRoot". | ||
- | |||
- | ===== VIM Scripts ===== | ||
- | Introduction to vim scripts ":help vim-script-intro"\\ | ||
- | |||
- | == Running Vim scripts == | ||
- | There is many way to run vim script simple way is to run calling script from `source` | ||
- | <code bash> | ||
- | :source /home/yahoo/test.vim | ||
- | </code> | ||
- | You can also call command from script directly | ||
- | <code bash> | ||
- | :call MyBackupFunc(expand('%'), { 'all':1, 'save':'recent'}) | ||
- | </code> | ||
- | You can do mapping of the keyboard using the variables. | ||
- | <code bash> | ||
- | :nmap ;s :source /home/yahoo/test.vim<CR> | ||
- | </code> | ||
- | The key sequence `;s` will execute the specified script file\\ | ||
- | You can call fucntion using the stored mapping same way. | ||
- | <code bash> | ||
- | :nmap \b :call MyBackupFunc(expand('%'), { 'all': 1 })<CR> | ||
- | </code> | ||
- | To call the function you need to call enter squence `\b` | ||
- | |||
- | === syntax highlighting === | ||
- | VIM support syntax highlighting. to turn it on. | ||
- | <code bash> | ||
- | :syntax on | ||
- | </code> | ||
- | to turn it off | ||
- | <code bash> | ||
- | :syntax off | ||
- | </code> | ||
- | |||
- | === VIM Variable / Initialization (.vimrc) === | ||
- | |||
- | == toggle syntax highlighting == | ||
- | <code bash> | ||
- | function! ToggleSyntax() | ||
- | if exists("g:syntax_on") | ||
- | syntax off | ||
- | else | ||
- | syntax enable | ||
- | endif | ||
- | endfunction | ||
- | |||
- | nmap <silent> ;s :call ToggleSyntax()<CR> | ||
- | </code> | ||
- | `;s` sequence to flip syntax highlighting on or off every time typed when you're in Normal mode.\\ | ||
- | nmap stands for "normal-mode key mapping".\\ | ||
- | <silent> option causes the mapping not to echo any command it's executing. | ||
- | == Creating centered titles == | ||
- | <code bash> | ||
- | function! CapitalizeCenterAndMoveDown() | ||
- | s/\<./\u&/g "Built-in substitution capitalizes each word | ||
- | center "Built-in center command centers entire line | ||
- | +1 "Built-in relative motion (+1 line down) | ||
- | endfunction | ||
- | |||
- | nmap <silent> \C :call CapitalizeCenterAndMoveDown()<CR> | ||
- | </code> | ||
- | single backslash used for continuation marker | ||
- | <code bash> | ||
- | call SetName( | ||
- | \ first_name, | ||
- | \ middle_initial, | ||
- | \ family_name | ||
- | \ ) | ||
- | </code> | ||
- | Also you can use "|" to write two line on singe line. | ||
- | <code bash> | ||
- | echo "Starting..." | call Phase(1) | call Phase(2) | echo "Done" | ||
- | </code> | ||
- | You can comment using single quote, as double quote used to define a string.\\ | ||
- | also you can use "|" to escape the comment in some cases. | ||
- | <code bash> | ||
- | echo "> " |"Print generic prompt | ||
- | </code> | ||
- | === Defining variable === | ||
- | to define variable you need to use word `let` | ||
- | |||
- | <code bash> | ||
- | let name = "Damian" | ||
- | let height = 165 | ||
- | let interests = [ 'Cinema', 'Literature', 'World Domination', 101 ] | ||
- | let phone = { 'cell':5551017346, 'home':5558038728, 'work':'?' } | ||
- | </code> | ||
- | |||
- | * scalar: a single value, such as a string or a number. For example: "Damian" or 165 | ||
- | * list: an ordered sequence of values delimited by square brackets, with implicit integer indices starting at zero. For example: ['Cinema', 'Literature', 'World Domination', 101] | ||
- | * dictionary: an unordered set of values delimited by braces, with explicit string keys. For example: {'cell':5551017346, 'home':5558038728, 'work':'?'} | ||
- | |||
- | ==== Basic Info ==== | ||
- | == Variable scoping == | ||
- | <code text> | ||
- | g: varname The variable is global | ||
- | s: varname The variable is local to the current script file | ||
- | w: varname The variable is local to the current editor window | ||
- | t: varname The variable is local to the current editor tab | ||
- | b: varname The variable is local to the current editor buffer | ||
- | l: varname The variable is local to the current function | ||
- | a: varname The variable is a parameter of the current function | ||
- | v: varname The variable is one that Vim predefines | ||
- | </code> | ||
- | == pseudovariables == | ||
- | <code text> | ||
- | & varname A Vim option (local option if defined, otherwise global) | ||
- | &l: varname A local Vim option | ||
- | &g: varname A global Vim option | ||
- | @ varname A Vim register | ||
- | $ varname An environment variable | ||
- | </code> | ||