Project.getFilePaths returns full urls.

FileFinder.initialize takes a 'selected' callback.

src/atom/file-finder.coffee

@@ -14,7 +14,7 @@ class FileFinder extends Template
     urls: null
     maxResults: null
 
-    initialize: ({@urls}) ->
+    initialize: ({@urls, @selected}) ->
       @maxResults = 10
 
       @populateUrlList()
@@ -34,8 +34,7 @@ class FileFinder extends Template
 
     select: ->
       filePath = @findSelectedLi().text()
-      atom.open filePath if filePath
-
+      @selected(filePath) if filePath and @selected
 
     moveUp: ->
       @findSelectedLi()

src/atom/project.coffee

@@ -8,6 +8,5 @@ class Project
   getFilePaths: ->
     projectUrl = @url
     fs.async.list(@url, true).pipe (urls) ->
-      urls = (url.replace(projectUrl, "") for url in urls when fs.isFile(url))
-      urls
+      url for url in urls when fs.isFile(url)
 

src/atom/root-view.coffee

@@ -43,6 +43,6 @@ class RootView extends Template
         @fileFinder = null
       else
         @project.getFilePaths().done (urls) =>
-          @fileFinder = FileFinder.build({urls})
+          @fileFinder = FileFinder.build({urls, selected: (url) => @editor.open(url)})
           @addPane(@fileFinder)
           @fileFinder.input.focus()