Make URIs clickable
It would be nice if URIs/URLs (recognized by gedit/gtk_source_view as such) would be clickable. In a case of an URL to a website - standard web browser would be launched with the URL. In a case of an URI to a file (like a link on a file in markdown/org/etc.) - a new tab with the content of that file should be opened (it works like this in Emacs with .org markup). This would allow the creation of interlinked plaintext wiki pages/notes, that require no webserver to be used.