R – Text editor and text-file-based hyperlinks

Background:

It seems that some text editors and IDEs are starting to get more "browser-like" in their features. Specifically, one such feature is the ability to treat ordinary text in an open text buffer as a hyperlink to another file, resource, or even a runnable command.

Programming this as an editor plugin or macro

Since this seems like a good idea, I have started programming some scripts and editor addons to do this very kind of thing, so that the user of a text editor can open or operate on links of the following style:

href="c:/files/foobar.txt"                   (click to open file)
href="c:/files/foobar.txt" jumpto="34"       (jump to a line number)
href="c:/files/foobar.txt" find="Lorem"      (jump to 1st line containing word)
href="find_in_files://c:/files" find="Lorem" (show all matching lines)
[[find_in_files://find=Lorem;exten=*.htm*]]  (alternate syntax option)
href="redir://c:/files/feebar.txt"           (replace current edit buffer)
href="run://c:/files/foobar.jpg"             (open in default image editor)
[[run://c:/files/foobar.jpg;runwith=foo.exe]] (alternate syntax option)

Questions:

1. Is there any kind of emerging convention for forming text-based hyperlinks?
2. If there is a convention for this kind of thing, is there a published specification?
3. Is there an implementation of this idea in your favorite editor/IDE?
4. Is there an alternate pre-existing approach for this idea that does not use hyperlinks?
5. How is this feature handled in the "grand-daddy" editors? (Vim, Emacs)

Update:

It looks like the question could have been clarified, but it turns out that Emacs Org mode is one specific example of what I was looking for that answers all of my questions.