Use the active view's filename when opening a file

data/core/commands/core.lua

@@ -86,6 +86,10 @@ command.add(nil, {
   end,
 
   ["core:open-file"] = function()
+    local view = core.active_view
+    if view and view.doc and view.doc.filename then
+      core.command_view:set_text((view.doc.filename:find("%.%.") and view.doc.abs_filename or view.doc.filename):match("(.*[/\\])(.+)$"))
+    end
     core.command_view:enter("Open File", function(text)
       core.root_view:open_doc(core.open_doc(common.home_expand(text)))
     end, function (text)