TODO: Ideas for how to use editline in an event loop

Signed-off-by: Joachim Nilsson <troglobit@gmail.com>

TODO.md

@@ -2,12 +2,29 @@ TODO
 ====
 
 Issues in need of work. Mostly compatibility with GNU readline, BSD
-[libedit], and usability improvements.
+[libedit][], and usability improvements.
 
 Remember, the general idea is to keep this library editline small with
 no external dependencies, except a C library.
 
 
+Add support for running in an event loop
+----------------------------------------
+
+To be able to use libeditline from within an event loop like [libuEv][]
+there are few things to do:
+
+- Refactor `editinput()` and `readline()`.  Break out the active code
+  used for set up and teardown, and the character input logic
+- Add bare necessities for external callbacks so that an event loop
+  that monitors `el_infd` has something to call on events
+- GNU Readline has its [alternate interface][gnu] which we should
+  probably implement
+
+Example usecase of the GNU alternate interface can be found here:
+http://www.mcld.co.uk/blog/blog.php?274
+
+
 Verify custom completion handlers
 ---------------------------------
 
@@ -46,4 +63,6 @@ Other minor TODO's
   http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
 
 
+[gnu]:     http://www.delorie.com/gnu/docs/readline/rlman_41.html#IDX288
+[libuEv]:  https://github.com/troglobit/libuev/
 [libedit]: http://www.thrysoee.dk/editline/