Vim script to easily find in files - some improvements over http://vim.wikia.com/wiki/Find_in_files_within_Vim

grephacks.vim

let s:grepopts='\ --exclude-dir=packages\ --exclude-dir=.git\ --exclude-dir=.svn\ --exclude-dir=tmp\ --exclude=*.intellisense.js\ --exclude=*-vsdoc.js\ --exclude=*.tmp\ --exclude=*.min.js\ -PHIirn\ $*'

if has('win32')
    let s:find=fnamemodify(findfile("find.exe", $GNUWIN."**"), ":p")
    let s:grep=fnamemodify(findfile("grep.exe", $GNUWIN."**"), ":p")
endif

execute "set grepprg=" . s:grep ."\\ " . s:grepopts

fun! Get_grep_include_opt(prefix)
    let l:cmd = ""
    if (expand("%:e") != "")
        "let l:cmd =  " --include=*.". expand("%:e") . " " 
        let l:cmd = a:prefix . expand("%:e") . " " 
    endif
    return l:cmd
endfun
fun! Grep_with_args(patt, path)
    let l:cmd=":silent lgrep! "
    let l:post="\"" . a:patt . "\""
    let l:pipe =  "\| lopen"
    let l:cmd = l:cmd .  Get_grep_include_opt(" --include=*.")
    let l:cmd = l:cmd . " " . l:post
    if a:path != ""
        let l:cmd = l:cmd . " " . a:path
    else
        let l:cmd = l:cmd . "  *" 
    endif
    let l:cmd = l:cmd . " " . l:pipe
    return l:cmd
endfun

fun! s:get_visual_selection()
    let l=getline("'<")
    let [line1,col1] = getpos("'<")[1:2]
    let [line2,col2] = getpos("'>")[1:2]
    return l[col1 - 1: col2 - 1]
endfun

" lvimgrep - internal - slow
nnoremap <expr> <leader>* ":silent lvimgrep /" . expand("<cword>") . "/j " .  Get_grep_include_opt("**/*.") . " \|lopen"
vnoremap <script> <leader>* <Esc>:lvimgrep /<C-R><C-R>=<SID>get_visual_selection()<CR>/j <C-R><C-R>=Get_grep_include_opt("**/*.")<CR>\|lopen

" vimgrep - fast but external
" project root
nnoremap <expr><leader>f Grep_with_args("\\b".expand("<cword>")."\\b", "")
vnoremap <script><leader>f <Esc>:silent lgrep
                            \ <C-R><C-R>=Get_grep_include_opt(" --include=*.")<CR>
                            \ "<C-R><C-R>=<SID>get_visual_selection()<CR>"
                            \ * \|lopen
" down current folder
nnoremap <expr><leader>fd Grep_with_args("\\b".expand("<cword>")."\\b", expand("%:p:h"))
vnoremap <script><leader>fd <Esc>:silent lgrep
                            \ <C-R><C-R>=Get_grep_include_opt(" --include=*.")<CR>
                            \ "<C-R><C-R>=<SID>get_visual_selection()<CR>"
                            \ <C-R><C-R>=expand("%:p:h")<CR>\* \|lopen