commentify

gistfile1.vim

nmap <silent> <leader>/ :call Commentify()<cr>
vmap <silent> <leader>/ :call Commentify()<cr>

"Commentify config
if !exists("b:commentType")
let b:commentType="#"
endif

augroup	Commentify
autocmd! BufNewFile,BufRead *.sage setf python
autocmd! FileType c,h,cpp,java,javascript,php,objc,objcpp let b:commentType="//"
autocmd! FileType lua,sql,haskell let b:commentType="--"
autocmd! FileType bash,sh,shell,perl,python,ruby let b:commentType="#"
autocmd! FileType vim,vimrc let b:commentType="\""
autocmd! FileType asm,lisp let b:commentType=";"
augroup END

function! Commentify()
	if getline(".") =~ "^\\s*" . b:commentType . ".*"
		execute 's@' . b:commentType . '@@'
		"REMOVE
		normal! ``
		"don't define a 3 character comment
		if len(b:commentType) == 2
			normal! 2h
		else
			normal! h
		endif
	else
		substitute/^/\=b:commentType/ "ADD
		normal! ``
		if len(b:commentType) == 2
			normal! 2l
		else
			normal! l
		endif
	endif
endfunction