   # keep separate from this.config so that additional calls to configure take account of false if they do exist though
   this.config.pilot = Date.now() if this.config.pilot is true
   this.config.live = Date.now() if this.config.live is true
+  for cw of this.config
+    delete this.config[cw] if this.config[cw] is ''
   for k of wc = JSON.parse JSON.stringify this.config
     delete wc[k] if not wc[k]? or wc[k] is false or ((typeof wc[k] is 'string' or Array.isArray(wc[k])) and wc[k].length is 0)
   try

_oab.prototype.find = (e) ->
  try
    try e.preventDefault()
    if JSON.stringify(this.f) isnt '{}'
      for k in ['title','journal','year','doi']
        if v = _L.get '#_oab_' + k
          if this.data[k] isnt v

    if val = _L.get('#_oab_input')
      val = val.trim().replace(/\.$/,'')
      if val.length
        if val.indexOf(' ') is -1
          if val.indexOf('doi.org/') isnt -1
            this.data.url = val
            this.data.doi = '10.' + val.split('/10.')[1].split(' ')[0]
          else if val.indexOf('10.') isnt -1
            this.data.doi = val
          else if val.indexOf('http') is 0 or val.indexOf('www.') isnt -1
            this.data.url = val
          else if val.toLowerCase().replace('pmc','').replace('pmid','').replace(':','').replace(/[0-9]/g,'').length is 0
            this.data.id = val
          else
            this.data.title = val # unlikely, just a one-word title, but just in case
        else
          this.data.title = val # could also be a citation but backend will try to parse that out
    else if this.data.doi or this.data.title or this.data.url or this.data.id
      _L.set '#_oab_input', this.data.doi ? this.data.title ? this.data.url ? this.data.id

    if this.plugin is 'instantill' and not this.data.doi and not this.needmore and not this.f?.metadata?.journal and this.data.title and this.data.title.length < 30 and this.data.title.split(' ').length < 3
      this.needmore = true
      this.metadata() # need more metadata for short titles
    else if not this.data.doi and (this.plugin is 'shareyourpaper' or (not this.data.url and not this.data.pmid and not this.data.pmcid and not this.data.title and not this.data.id))
      if this.plugin is 'shareyourpaper'
