.vimrc hack to add rspec and jasmine navigation to/from spec (app, javascript, etc)

vimrc snippet

function! FindOrCreateAlternate()
    let buflist = []
    let bufcount = bufnr("$")
    let currbufnr = 1

    let current = fnamemodify(expand("%"), ':p')
    
    if current =~ '/spec/'
      if current =~ '/spec/javascripts/'
        let altname = substitute(current, "/spec/","/public/", 'g')
        let altname = substitute(altname, "\Spec.js", ".js",'g')
      else
        let altname = substitute(current, "/spec/","/app/", 'g')
        let altname = substitute(altname, "\_spec.rb", ".rb",'g')
      endif
    else
      if current =~ '/javascripts/'
        let altname = substitute(current, "/public/","/spec/", 'g')
        let altname = substitute(altname, ".js", "Spec.js", 'g')
      else
        let altname = substitute(current, "/app/","/spec/", 'g')
        let altname = substitute(altname, ".rb", "_spec.rb", 'g')
      endif
    endif
    
    while currbufnr <= bufcount
        if(buflisted(currbufnr))
            let currbufname = bufname(currbufnr)

            let curmatch = tolower(currbufname)
            if(altname == currbufname)
                call add(buflist, currbufnr)
            endif
        endif
        let currbufnr = currbufnr + 1
    endwhile

    if(len(buflist) > 1)
      exec ":b " . get(buflist,0)
    else
      :w 
      exec ":e " . altname 
    endif

endfunction

function! TestToggleNewTabVertical()
  :vsplit
  call FindOrCreateAlternate() 
endfunction

function! TestToggleNewTabHorizontal()
  :split
  call FindOrCreateAlternate() 
endfunction